mitsubishi electric data book pfd-p250vm-e pfd-p500vm-e eng
DESCRIPTION
Mitsubishi Electric Data Book PFD-P250VM-E PFD-P500VM-E EngTRANSCRIPT
DATA BOOK
AIR CONDITIONERS
MODEL
PUHY-P250YHM-APUHY-P500YSHM-APQHY-P250YHM-APFD-P250VM-EPFD-P500VM-E
1
The water circuit should be a closed circuit.
Ask an authorized technician to install the accessories. Improper installation by the user may result in water leakage, electric shock, or fire.
Always use an air cleaner, humidifier, electric heater, and other accessories specified by Mitsubishi Electric.
Contents
Safety Precautions
I. General Equipment Descriptions1. Unit configuration table ·····································1
2. Operable temperature range ······························3
II. Product Specifications1. Specifications ······················································4
(1) Indoor unit
(2) Outdoor unit / Heat source unit
2. External Dimensions ··········································6
(1) Indoor unit
(2) Outdoor unit / Heat source unit
3. Center of Gravity ···············································11
(1) Indoor unit
(2) Outdoor unit / Heat source unit
4. Electrical Wiring Diagrams ······························13
(1) Indoor unit
(2) Outdoor unit / Heat source unit
5. Refrigerant Circuit Diagram And Thermal Sensor ·····17
6. Optional Parts ···················································22
(1) Outdoor unit
7. Controller ···························································23
(1) MA remote controller
III. Product Data1. Capacity Curves ················································24
(1) Correction by temperature
(2) Part Load Performance
(3) Correction by refrigerant piping length
(4) Correction by indoor unit airflow rate
(5) SHF Curves
2. Sound Levels ·····················································28
(1) Measurement condition
(2) NC Curves
3. Fan Characteristics Curves ·····························30
IV. System Design1. Piping Design ····················································33
(1) PFD-P250VM-E
(2) PFD-P500VM-E (two refrigerant circuit system)
(3) PFD-P500VM-E (single refrigerant circuit system)
(4) Refrigerant charging calculation
2. Designing of water circuit system ··················37
3. Water piping work ·············································49
4. Control Wiring ···················································50
(1) Specifications of control wiring and maximumlength of wiring
5. Types of switch settings and setting methods ······51
(1) Address setting
(2) Power supply switch connector connectionon the outdoor unit
(3) Choosing the temperature detection spot byindoor unit (Factory Setting: SWC "Standard")
(4) Setting the MA "Sub" controller
(5) Connection of two refrigerant circuits
6. Sample System Connection ····························53
(1) System with MA remote controller
(2) System with MA remote controller and AG-150A
7. External input/output specifications ···············58
(1) Input/output specifications
(2) Wiring
(3) Wiring Method
(4) Switch setting
(5) Dehumidification priority control
(6) Normal/Local switching switch (SW9)
8. System Rotation Control ··································63
9. Notes on the use of optional accessories ·····63
10. Caution for refrigerant leakage ·······················64
(1) Refrigerant property
(2) Confirm the Critical concentration and take countermeasure
V. Air Conditioning the Computer Room1. Main Features of the Floor-Duct Air
Conditioners ······················································65
2. Features of air-conditioner for computer room ······65
3. Step-by-Step Plan for the Implementation ofthe Air-Conditioning ·········································66
4. Conditions for the Installation of Computer-Room Air Conditioners ···················67
(1) Outdoor Temperature and Humidity
(2) Indoor Temperature and Humidity
(3) Matching the Volume of Air Flow
(4) Considering a Back-up Air Conditioning System
5. Setting the Air conditioners ·····························68
(1) Air-Conditioning Load
(2) Sample Selection of Air Conditioners
6. Automatic Control of the Computer Room ····70
VI. Maintenance / Inspection1. Maintenance/Inspection Schedule ··················71
(1) Approximate Long evity of Various Parts
(2) Notes
(3) Details of Maintenance/Inspection
*PFD-type indoor units cannot be connected to outdoor units other than the ones specified above.*PFD-type indoor units and other types of indoor units cannot coexist in the same refrigerant system.*It is necessary to change pulley and V-belt when using it by the power supply frequency 60Hz.*For restrictions when the PFD-type indoor units are connected (related to the system), see IV.system Design.*20HP system of the heat source unit cannot be connected to a single refrigerant circuit.
When using a PFD-P250VM-E as an indoor unit, connect an outdoor unit PUHY-P250YHM-A / PQHY-P250YHM-A to each indoor unit and operate with a built-in remote control for the indoor unit.*1: Bold line indicates refrigerant piping (gas/liquid). This system consists of single refrigerant circuit.*2: Indicates TB3-type transmission line that connects the indoor and outdoor units. This system consists of single refrigerant circuit.*3: Indicates TB7-Type transmission line that allows the unit to communicate with the controller.
When using a PFD-P500VM-E as an indoor unit, connect 1 PUHY-P500YSHM-A outdoor unit to each indoor unit and operate with a built-in remote control for the indoor unit.*1: Bold line indicates refrigerant piping (gas/liquid). This system consists of single refrigerant circuit.*2: Indicates TB3-type transmission line that connects the indoor and outdoor units. This system consists of single refrigerant circuit.*3: Indicates TB7-type transmission line that allows the unit to communicate with the controller.
1. Unit configuration table
10HP system 20HP system
Indoor unit PFD-P250VM-E PFD-P500VM-E
PUHY-P250YHM-A x 2
PUHY-P500YSHM-A
PQHY-P250YHM-A PQHY-P250YHM-A x 2
Outdoor unit
Heat sourcu unit
Model Name PUHY-P250YHM-A
<10HP System>
<20HP System>
Single refrigerant circuit
24V DC
M-NET
PAC-SC51KUA
Outdoor Unit / Heat source unit
AG-150A
PUHY-P250YHM-APQHY-P250YHM-A
Indoor Unit
PFD-P250VM-E
TB7 TB3 *2*3
*1CENTRALIZED CONTROLLER AG-150A
24V DC
M-NET
PAC-SC51KUA
Outdoor Unit
AG-150A
PUHY-P500YSHM-AIndoor Unit
PFD-P500VM-E
TB7 *2*3
*1
CENTRALIZED CONTROLLER AG-150A
TB3TB3
1
I. General Equipment Descriptions
2
When using a PFD-P500VM-E as an indoor unit, connect 2 PUHY-P250YHM-A / PQHY-P250YHM-A outdoor units to each indoor unit and operate with a built-in remote control for the indoor unit.At factory shipment, this model of indoor unit is designed and set to accommodate a single refrigerant circuit. Connection of two refrigerant circuits to the indoor unit requires setting change and pipe work.*1: Bold line indicates refrigerant piping (gas/liquid). This system consists of two refrigerant circuits.*2: Indicates TB3-type transmission line that connects the indoor and outdoor units. This system consists of two refrigerant circuit.*3: Indicates TB7-type transmission line that allows the unit to communicate with the controller.
Two refrigerant circuits
24V DC
M-NETPAC-SC51KUA
Outdoor Unit / Heat source unit
AG-150A
PUHY-P250YHM-APQHY-P250YHM-A
PUHY-P250YHM-APQHY-P250YHM-A
Indoor Unit
PFD-P500VM-E
TB7 TB3 *2
*1CENTRALIZED CONTROLLER AG-150A
TB3TB7*3
3
2. Operable temperature range
PFD unit + PUHY-P250YHM-A, PUHY-P500YSHM-A
PFD unit + PQHY-P250YHM-A
* The height between the Outdoor PUHY-P-YHM-A and Indoor could make the operation temperature range narrow. For details, refer to p.33, IV-1. Piping Design.
30
25
20
15
10
5-10 -5 0 5 10 15 20 25 30 35 40 45 50
Indo
or te
mpe
ratu
re(˚
CW
B)
Circulating water temperature(˚C)
30
25
20
15
10
5-10 -5 0 5 10 15 20 25 30 35 40 45 50
Indo
or te
mpe
ratu
re(˚
CD
B)
Circulating water temperature(˚C)
30
25
20
15
10-10-15 -5 0 5 10 15 20 25 30 35 40 45
Indo
or t
empe
ratu
re(˚
CW
B)
Outdoor temperature (˚CDB)
30
25
20
15
10
5-10-15-20 -5 0 5 10 15 20 25 30 35 40
Indo
or t
empe
ratu
re(˚
CD
B)
Outdoor temperature (˚CWB)
• Cooling
• Heating
• Cooling
• Heating
1. Specifications
(1) Indoor Unit
(2) Outdoor Unit / Heat source unit
3N~380/400/415V(50Hz), 400/415V(60Hz)
PFD-P500VM-E
5.0Power source
kW
-
Power input
System capacity
A
m3/minPa
kg
dB(A)m
mm
Current
Heat exchanger
Fan
RefrigerantExternal finish
Type x QuantityAirflow rateExternal static pressure
kWMotor Output
Air filter
Refrigerant piping diameter* 2
Refrigerant piping allowable length
Gas pipeLiquid pipe
Cross fin (Aluminum plate fin and copper tube)
Sirocco fan x 2Sirocco fan x 1
ø 9.52 Brazed (ø 12.7 for over 90m)ø 22.2 Brazed
Single refrigerantcircuitTwo refrigerantcircuit
320
1,950 x 1,380 x 780
9.5/9.0/8.7
PFD-P250VM-E
2.5
kW 28.0 31.5 56.0 63.0
5.3/5.0/4.9
1601201204.42.2
380
59165
Gas pipeLiquid pipe ø 15.88 Brazed
ø 28.58 Brazed
Gas pipeLiquid pipe ø 9.52 Brazed (ø 12.7 for over 90m)
ø 22.2 Brazed
520
63165
R410AGalvanized steel plate (with polyester coating)
<MUNSEL 2.9GY 8.6/0.3(White) 7.2GB 3.2/5.3(Blue) or similar>
PP Honeycomb fabric (washable)
Thermal switch1,950 x 1,980 x 780
Protection devices (Fan)External dimensions H x W x D
Model name
Sound pressure level
Net weight
Cooling Heating * 1 * 1Cooling Heating
Note: *1. Heating can be used only by the indoor warming-up.*2. At factory shipment, this model of indoor unit is designed and set to accommodate a single refrigerant circuit.
Connection of two refrigerant circuits to the indoor unit requires setting change and pipe work.** Installation/foundation work, electric connection work, duct work, insulation work, power source switch and other items are
not specified in the specifications.
28.0 31.53N ~ 380/400/415V 50/60Hz
Capacity
Model name
kWPower source
*1
*2
kWA
m3/minkW
kWkW
mm
dB(A)kg
Power inputCurrentFan
Airflow rateType x Quantity
Motor outputTypeMotor outputCrankcase heater
Compressor
Refrigerant / LubricantExternal finish
High pressure protection
Inverter circuit (COMP./FAN)
CompressorFan
External dimension H x W x DProtectiondevices
Refrigerant piping diameter
High press. pipeLow press. pipe
Sound pressure levelNet weight
1,710 (without legs 1,650) x 920 x 760
Propeller fan x 1185
0.46 x 1Inverter scroll hermetic compressor
6.70.035
R410A/MEL32Heat exchanger Salt-resistant cross fin & copper tube
Over-heat protection, Over-current protection ø9.52 Brazed (ø12.7 for over 90m)
ø22.2 Brazed
Pre-coated galvanized steel sheets (+ powder coating for -BS type) <MUNSEL 5Y 8/1 or similar>
High pres. Sensor & High pres. Switch at 4.15MPa
200
6.66.811.1/10.5/10.211.4/10.9/10.5
PUHY-P250YHM-A (-BS)connected with PFD series
Over-heat protectionThermal switch
57
Cooling Heating
Note: *1. Cooling/Heating capacity indicates the maximum value at operation under the following condition.
*2. It is measured in anechoic room.** Installation/foundation work, electrical connection work, duct work, insulation work, power source switch,
and other items shall be referred to the Installation Manual.
Indoor : 27˚CDB / 19˚CWBIndoor : 20˚CDBPipe length : 7.5m
Outdoor :Outdoor :Height difference : 0m
35˚CDB7˚CDB / 6˚CWB
<Cooling><Heating>
II. Product Specifications
4
1. Specifications
1. Specifications
Capacity
Model name
Power sourcePower inputCurrent
TypeMotor output
Compressor
Refrigerant / LubricantExternal finishExternal dimension
Heat exchanger
Protectiondevices
High pressure protectionCompressorInverter circuit (COMP./FAN)
Refrigerant piping diameter
High press. pipeLow press. pipe
Sound pressure levelNet weight
Crankcase heater
kW
kWA
kWkW
mm
dB(A)kg
28.0 31.53N ~ 380/400/415V 50/60Hz
5.515.459.3/8.8/8.59.2/8.7/8.4
Cooling Heating
Inverter scroll hermetic compressor6.3
0.035 (240V)
R410A/MEL32Plate type
Acrylic painted steel plate
Over-heat protection, Over-current protection Over-heat protection
ø9.52 Brazed (ø12.7 for over 90m)ø22.2 Brazed
19549
PQHY-P250YHM-Aconnected with PFD series
Note:Indoor : 27˚CDB / 19˚CWBIndoor : 20˚CDBPipe length : 7.5m
Water temperature : 30˚CWater temperature : 20˚CHeight difference : 0m
<Cooling><Heating>
*2. It is measured in anechoic room.** Installation/foundation work, electrical connection work, duct work, insulation work, power source switch,
and other items shall be referred to the Installation Manual.
*1. Cooling/Heating capacity indicates the maximum value at operation under the following condition.
H x W x D 1,160 (1,100 without legs) x 880 x 550High pres. Sensor & High pres. Switch at 4.15MPa
56.0 63.03N ~ 380/400/415V 50/60Hz
Capacity
Model name
kWPower source
*1
*1
*2
*2
kWA
m3/minkW
kWkW
mm
dB(A)kg
Power inputCurrentSet ModelFan
Airflow rateType x Quantity
Motor outputTypeMotor outputCrankcase heater
Compressor
Refrigerant / LubricantExternal finish
High pressure protection
Inverter circuit (COMP./FAN)
CompressorFan
External dimension H x W x DProtectiondevices
Refrigerant piping diameter
High press. pipeLow press. pipe
Sound pressure levelNet weight
1,710 (without legs 1,650) x 920 x 7601,710 (without legs 1,650) x 920 x 760
Heat exchanger
Propeller fan x 1PUHY-P250YHM-A(-BS)
1850.46 x 1
Inverter scroll hermetic compressor6.7
0.035
R410A/MEL32Salt-resistant cross fin & copper tube
Propeller fan x 1PUHY-P250YHM-A(-BS)
1850.46 x 1
Inverter scroll hermetic compressor6.7
0.035
R410A/MEL32Salt-resistant cross fin & copper tube
Over-heat protection, Over-current protection ø9.52 Brazedø22.2 Brazed
Pre-coated galvanized steel sheets (+ powder coating for -BS type) <MUNSEL 5Y 8/1 or similar>
High pres. Sensor & High pres. Switch at 4.15MPa
200
13.213.622.2/21.0/20.422.8/21.8/21.0
PUHY-P500YSHM-A (-BS)connected with PFD series
Over-heat protectionThermal switch
60
ø9.52 Brazedø22.2 Brazed
200
Cooling Heating
Note: *1. Cooling/Heating capacity indicates the maximum value at operation under the following condition.
*2. It is measured in anechoic room.** Installation/foundation work, electrical connection work, duct work, insulation work, power source switch,
and other items shall be referred to the Installation Manual.
Indoor : 27˚CDB / 19˚CWBIndoor : 20˚CDBPipe length : 7.5m
Outdoor :Outdoor :Height difference : 0m
35˚CDB7˚CDB / 6˚CWB
<Cooling><Heating>
5
PFD-P250VM-E Unit : mm
390
50
50
100
Not
e1.
Be
sure
to s
et u
p a
trap
for
Em
erge
ncy
drai
n pi
ping
.(T
rap
heig
ht:b
eyon
d 10
0mm
)(T
rap
is n
ot n
eces
sary
for
mai
n dr
ain
pipi
ng.)
2.A
ppro
ve th
is fi
gure
bec
ause
it is
ref
used
for
the
impr
ovem
ent a
nd s
peci
ficat
ion
subj
ect t
o ch
ange
with
out n
otic
e.3.
Am
puta
te a
gas
pip
e/liq
uid
pipe
in th
e fix
ed h
eigh
t at t
he ti
me
of 2
ref
riger
ant
circ
uit c
onne
ctio
n, a
nd c
onne
ct it
with
the
loca
l pip
e.
Dra
in p
ipin
g co
nnec
tion
for
hum
idifi
er
Air
inle
t
500
or m
ore
200
or m
ore
400 or more
800 or more
Indo
or u
nit
Ser
vice
spa
ce
Uni
t sur
face
figur
e
Pip
e ex
ecut
ion
spac
e
Uni
t fro
ntfig
ure
Indo
or u
nit
Ser
vice
spa
ce
Hol
e fo
r th
e co
ntro
l wiri
ng
Lifti
ng b
olts
<2-
ø32
kno
ck o
utho
le>
Hol
e fo
r th
e po
wer
supp
ly(B
ody)
<N
omal
/Loc
al>
1380
Rem
ote
cont
rolle
r
A
Ref
rig. p
ipin
g <
gas>
ø22
.2 b
raze
Pow
er s
uppl
y:W
hite
Ope
ratin
g:G
reen
Che
ck:Y
ello
wF
ailu
re:R
ed(A
cces
sory
)F
ilter
Lam
p
<vi
ew fr
om A
>
320220
1950
20
100
462
580P
anel
<ø
32 k
nock
out
hol
e>
Air
inle
t
Con
trol
box
50
140
Hol
e fo
r th
e co
ntro
l wiri
ng <
ø32
kno
ck o
ut h
ole>
Mai
n dr
ain
pipi
ng c
onne
ctio
n <
Rp1
-1/4
>
<A
cces
sory
>· L
iftin
g bo
lts···
···4p
c.· F
ront
pan
el o
peni
ng a
nd c
losi
ng k
ey···
···1p
c.
100
Air
outle
t
Ref
rig. p
ipin
g <
liqui
d> ø
9.52
bra
ze
Hol
e fo
r th
e po
wer
sup
ply
<ø
32 k
nock
out
hol
e>
260
68
100
1180
780
1340
Hol
e fo
r th
e co
ntro
l wiri
ng(ø
60)
410
68
Hol
e fo
r th
e po
wer
sup
ply(
ø60
)32
1
220
Hol
e fo
r ga
s pi
pe c
onne
ctin
g(ø
42)
Air
outle
t
20
Bol
t hol
es:8
-ø18
140
305
100
518
Hol
e fo
r liq
uid
pipe
con
nect
ing(
ø24
)
65
<R
p1-1
/4>
Hol
e fo
r liq
uid
pipe
con
nect
ing(
ø24
)87
186
20
Em
erge
ncy
drai
n pi
ping
con
nect
ion
<R
p1-1
/4>
Hol
e fo
r ga
s pi
pe c
onne
ctin
g(ø
42)
Cha
ngeo
ver
switc
h (S
W9)
340
100
150
260
171
20
401
740
2. External Dimensions (1) Indoor unit
6
PFD-P500VM-E Unit : mm
5010
0140
5050 390 10
0
68124
135
Not
e1.
Be
sure
to s
et u
p a
trap
for
Em
erge
ncy
drai
n pi
ping
.(T
rap
heig
ht:b
eyon
d 10
0mm
)(T
rap
is n
ot n
eces
sary
for
mai
n dr
ain
pipi
ng.)
2.A
ppro
ve th
is fi
gure
bec
ause
it is
ref
used
for
the
impr
ovem
ent a
nd s
peci
ficat
ion
subj
ect t
o ch
ange
with
out n
otic
e.3.
Am
puta
te a
gas
pip
e/liq
uid
pipe
in th
e fix
ed h
eigh
t at t
he ti
me
of 2
ref
riger
ant
circ
uit c
onne
ctio
n, a
nd c
onne
ct it
with
th
e lo
cal p
ipe.
Ref
rig. p
ipin
g <
liqui
d> in
2 r
efrig
. circ
uit s
yste
m ø
9.5
2 br
aze
No.
1
Ref
rig. p
ipin
g <
gas>
in 2
ref
rig. c
ircui
t sys
tem
type
P45
0:ø
19.
05 b
raze
, typ
e P
560:
ø 2
2.2
braz
e N
o.1
Ref
rig. p
ipin
g <
liqui
d> ø
15.
88 b
raze
Ref
rig. p
ipin
g <
gas>
ø 2
8.58
bra
ze
Hol
e fo
r N
o.2
gas
pipe
conn
ectin
g(ø
42)
in 2
re
frig
. circ
uit s
yste
m
Hol
e fo
r N
o.2
liqui
d pi
peco
nnec
ting(
ø 2
4) in
2
refr
ig. c
ircui
t sys
tem
Hol
e fo
r liq
uid
pipe
con
nect
ing(
ø 3
4)
Hol
e fo
r N
o.1
liqui
d pi
pe c
onne
ctin
g(ø
24)
in 2
ref
rig. c
ircui
t sys
tem
Bol
t hol
es:8
-ø 1
8
Hol
e fo
r N
o.1
gas
pipe
con
nect
ing(
ø 4
2)in
2 r
efrig
. circ
uit s
yste
m
Hol
e fo
r ga
s pi
pe c
onne
ctin
g(ø
48)
Mai
n dr
ain
pipi
ng c
onne
ctin
g<R
p1-1
/4>
Dra
in p
ipin
g co
nnec
tion
for
hum
idifi
er
<A
cces
sory
>· L
iftin
g bo
lts···
···4p
c.· F
ront
pan
el o
peni
ng a
nd c
losi
ng k
ey···
···1p
c.
Air
inle
t
Ser
vice
spa
ce
Indo
or u
nit
Pip
e ex
ecut
ion
spac
e
Pan
el o
peni
ngan
d cl
osin
g di
men
sion
Indo
or u
nit
Uni
t sur
face
figur
e
Ser
vice
spa
ce
400 or more
Uni
t fro
ntfig
ure
1000 or more ✻1
200
or m
ore
✻1.
It is
nec
essa
ry fo
r th
e re
mov
al
of th
e pa
nel b
eyon
d 60
0mm
.
500
or m
ore
710R
efrig
. pip
ing
<ga
s> in
2 r
efrig
. circ
uit s
yste
mty
pe P
450:
ø 1
9.05
bra
ze,
type
P56
0:ø
22.
2 br
aze
No.
2
680
<2-ø
32
knoo
k ou
tho
le>
<ø
32
knoo
k ou
t hol
e>
Air
outle
t
Air
inle
t
Pow
er s
uppl
y:W
hite
Ope
ratin
g:G
reen
Che
ck:Y
ello
wF
ailu
re1
:Red
Fai
lure
2:R
ed
<N
orm
al/L
ocal
>
(Acc
esso
ry)
<vi
ew fr
om A
>
<R
p1-1
/4>
Air
outle
t
Hol
e fo
r liq
uid
side
pip
e co
nnec
ting
or N
o.1
gas
side
pip
e co
nnec
ting(
ø 4
2)in
2 r
efrig
. circ
uit s
yste
m
Hol
e fo
r N
o.2
gas
side
pip
e co
nnec
ting(
ø 4
2)in
2 r
efrig
. circ
uit s
yste
m
100
100
1780
1940
100
2020
20
65
321
100
410
359
241
740
359
580
305
320220
370
20
Em
erge
ncy
drai
n pi
ping
con
nect
ion
<R
p1-1
/4>
Hol
e fo
r N
o.1
liqui
d si
de p
ipe
conn
ectin
g(ø
24)
in 2
ref
rig. c
ircui
t sys
tem
Hol
e fo
r th
e po
wer
sup
ply(
ø 6
0)
1950
780
Hol
e fo
r ga
s si
de p
ipe
conn
ectin
g or
N
o.2
liqui
d si
de p
ipe
conn
ectin
g(ø
48)
in 2
ref
rig. c
ircui
t sys
tem
440
Air
outle
t
185
379
135
Ref
rig. p
ipin
g <
liqui
d> in
2 r
efrig
. circ
uit
syst
em ø
9.5
2 br
aze
No.
2
68
120
Hol
e fo
r th
e co
ntro
l wiri
ng <
ø 3
2 kn
ook
out h
ole>
Hol
e fo
r th
e po
wer
sup
ply
<ø
32
knoo
k ou
t hol
e>
220
150
81
Hol
e fo
r th
e co
ntro
l wiri
ng(ø
60)
Pan
el
68
Lifti
ng b
olts
171
A
Con
trol
box
Lam
p
Filt
er
Rem
ote
cont
rolle
r
838
Hol
e fo
r th
e co
ntro
l wiri
ng
1980
124
68
Hol
e fo
r the
pow
ersu
pply
(Bod
y)
Cha
ngeo
ver
switc
h (S
W9)
7
(2) Outdoor unit / Heat source unit
8
PUHY-P250YHM-A(-BS) Unit : mm
172
142
BA
ø22
.2 B
raze
dø
9.52
Bra
zed
Gas
Liqu
idG
asLi
quid
Con
nect
ion
spec
ifica
tions
for
the
refri
gera
nt s
ervi
ce v
alve
PUHY
-P25
0YHM
Pos
ition
dim
ensi
ons
for
the
refr
iger
ant
serv
ice
valv
eM
odel
Con
nect
ing
pipe
spe
cific
atio
ns
Ref
riger
ant s
ervi
ceva
lve
<ga
s>
Ref
riger
ant s
ervi
ceva
lve
<liq
uid>
ø34
Kno
ckou
t hol
eø
52 K
nock
out h
ole
ø52
or
ø27
Kno
ckou
t hol
eø
65 o
r ø
40 K
nock
out h
ole
150X
92 K
nock
out h
ole
102X
72 K
nock
out h
ole
Fron
t thr
ough
hol
eBo
ttom
thro
ugh
hole
Fron
t thr
ough
hol
eFr
ont t
hrou
gh h
ole
Botto
m th
roug
h ho
leFr
ont t
hrou
gh h
ole
Fortransmissioncables
For
wire
s
For
pip
es
Spe
cific
atio
nsU
sage
NO.
Not
e1.P
leas
e re
fer
to th
e ne
xt p
age
for
info
rmat
ion
rega
rdin
g ne
cess
ary
spac
ing
arou
nd th
eun
it an
d fo
unda
tion
wor
k.2.
The
det
acha
ble
leg
can
be r
emov
ed a
t site
.3.
At b
razi
ng o
f pip
es,w
rap
the
refr
iger
ant s
ervi
ce v
alve
w
ith w
et c
loth
and
kee
p th
e te
mpe
ratu
re o
f re
frig
eran
t ser
vice
val
ve u
nder
120
˚C.
<A
cces
sorie
s>C
onne
ctin
g pi
pe
<G
as>
·
Elb
ow(I
D25
.4X
OD
25.4
)···P
250
· P
ipe
(ID
25.4
XO
D22
.2)·
··P25
0
<
Liqu
id>
· P
ipe
(ID
9.52
XO
D9.
52)·
··P25
0
*1
*1 C
onne
ct b
y us
ing
the
conn
ectin
g pi
pes
(for
bot
tom
pip
ing
a
nd fr
ont p
ipin
g) th
at a
re s
uppl
ied.
(fro
nt a
nd b
ack,
2 po
ints
)N
ote
2*
555560
60
760
A
B 60
Det
acha
ble
leg60
1710
72
Con
trol
box
132
64 3
1
1 2 3 4 5 625
Inta
keai
r
90
204
102
251
240
Inta
keai
r
Ser
vice
pane
l
1410
1650
760
920
88
25
54Inta
keai
r
Dis
char
ge a
ir
98
Fro
nt v
iew
Left
side
vie
w
Top
vie
w1p
c.1p
c.
1pc.
221
150
(Mounting pitch)
(Mou
ntin
g pi
tch)
Ref
riger
ant s
ervi
ce
valv
e <g
as>
Ref
riger
ant s
ervi
ceva
lve
<liq
uid>
2X2-
14X
20 O
val h
ole
14583
760
8076
080
18724(721 727)18
9286
131
251
186
52
145
Bot
tom
vie
w
9
PUHY-P500YSHM-A(-BS)
b
Det
acha
ble
leg
Not
e 2*
a
Not
e 1.
Con
nect
the
pipe
s as
sho
wn
in th
e fig
ure
abov
e. R
efer
to th
e ta
ble
abov
e fo
r th
e pi
pe s
ize.
2
.The
det
acha
ble
leg
can
be r
emov
ed a
t site
.
3.T
win
ning
pip
es s
houl
d no
t be
tilte
d m
ore
than
15
degr
ees
from
the
grou
nd.S
ee th
e In
stal
latio
n M
anua
l for
det
ails
.
Gas
Liqu
id
Out
door
uni
t 2
920
760
3092
0
601650
1710
Inta
keai
r
Out
door
uni
t 2O
utdo
or u
nit 1
Dis
char
ge a
ir
Inta
keai
rIn
take
air
Left
view
To in
door
uni
t
Fron
t vie
w
c dba
fe
Gas
Tw
inni
ng p
ipe<
optio
nal p
arts
>
Liqu
id T
win
ning
pip
e<op
tiona
l par
ts>
To in
door
uni
t
Twin
ning
pip
e co
nnec
tion
size
PU
HY-
P50
0YS
HM
-A(-
BS
)P
UH
Y-P
250Y
HM
-A(-
BS
)P
UH
Y-P
250Y
HM
-A(-
BS
)
Pac
kage
uni
t nam
e
Com
pone
nt u
nit n
ame
Out
door
Twin
ning
Kit(
optio
nal p
arts
)
Indo
or u
nit
Twi
nnin
g pi
pe
Out
door
uni
t 1
28.5
815
.88
CM
Y-Y
100V
BK
2c
or e
d or
fG
asLi
quid
Twin
ning
pip
e
Out
door
uni
t
Uni
t mod
el
P25
09.
5222
.2
Unit : mm
10
PQHY-P250YHM-A
Ser
vice
spa
ce(f
ront
sid
e)
Serv
ice sp
ace
(fron
t sid
e)
Top
view
The
spa
ce fo
rco
ntro
l box
repl
acem
ent
450
600
170
350 72
5
600450
170
1100550 (530)
(102
)(5
3)60
856
3
584
121226234
18
78 168
433 54
8
Con
trol
box
Ser
vice
pane
l
8
7
3 2
880
Fig
. BF
ig. A
Connectionspecificationsfor
therefrigerantservicevalve
Model
Not
e 1.
Clo
se a
hol
e of
the
wat
er p
ipin
g, th
e re
frig
eran
t pip
ing,
the
pow
er s
uppl
y, a
nd th
e co
ntro
l wiri
ng a
nd u
nuse
d kn
ocko
ut h
oles
with
the
putty
etc
. so
as n
ot to
infil
trat
e ra
in w
ater
etc
. (fie
ld e
rect
ion
wor
k)N
ote
2. A
t the
tim
e of
pro
duct
shi
pmen
t, th
e fr
ont s
ide
pipi
ng s
peci
ficat
ion
serv
es a
s th
e lo
cal d
rain
age
conn
ectio
n. W
hen
conn
ectin
g on
the
rear
sid
e, p
leas
e re
mov
e th
e r
ear
side
plu
g se
alin
g co
rks,
and
atta
ch a
fron
t sid
e. E
nsur
e th
ere
is n
o le
ak a
fter
the
atta
chm
ent h
as b
een
fitte
d.N
ote
3. T
ake
notic
e of
ser
vice
spa
ce a
s F
ig. A
. (In
cas
e of
sin
gle
inst
alla
tion,
600
mm
or
mor
e of
bac
k sp
ace
as fr
ont s
pace
mak
es e
asie
r ac
cess
whe
n se
rvic
ing
the
unit
from
rea
r si
de)
Not
e 4.
If w
ater
pip
es o
r re
frig
eran
t pip
es s
tret
ch u
pwar
d, r
equi
red
spac
e fo
r se
rvic
e an
d m
aint
enan
ce d
ue to
r
epla
cem
ent o
f con
trol
box
is s
how
n in
Fig
. B.
Not
e 5.
Env
ironm
enta
l con
ditio
n fo
r in
stal
latio
n; -
20~
40˚C
(D
B)
as
indo
or in
stal
latio
n.N
ote
6. I
n ca
se th
e te
mpe
ratu
re a
roun
d th
e he
at s
ourc
e un
it ha
s p
ossi
bilit
y to
dro
p un
der
0˚C
, be
care
ful f
or th
e fo
llow
ing
poi
nt to
pre
vent
the
pipe
bur
st b
y th
e w
ater
pip
e fr
eeze
-up.
· C
ircul
ate
the
wat
er a
ll th
e tim
e ev
en if
the
heat
sou
rce
un
it is
not
in o
pera
tion.
· D
rain
the
wat
er fr
om in
side
of t
he h
eat s
ourc
e un
it w
hen
th
e he
at s
ourc
e un
it w
ill n
ot o
pera
te fo
r a
long
term
.N
ote
7. E
nsur
e th
at th
e dr
ain
pipi
ng is
dow
nwar
d w
ith a
pitc
h of
m
ore
than
1/1
00.
Not
e 8.
The
det
acha
ble
leg
can
be r
emov
ed a
t site
.N
ote
9. A
t bra
zing
of p
ipes
, wra
p th
e re
frig
eran
t ser
vice
val
ve
with
wet
clo
th a
nd k
eep
the
tem
pera
ture
of
ref
riger
ant s
ervi
ce v
alve
und
er 1
20˚C
.
Con
nect
ing
pipe
spe
cific
atio
ns
<A
cces
sorie
s>· R
efrig
eran
t (Li
quid
) co
nn. p
ipe
·····1
pc.
(P25
0 ; P
acka
ged
in th
e ac
cess
ory
kit)
· Ref
riger
ant (
Gas
) co
nn. p
ipe
·····1
pc.
(P25
0 ; P
acka
ged
in th
e ac
cess
ory
kit)
PQ
HY-
P25
0YH
M-A
*1. C
onne
ct b
y us
ing
the
conn
ectin
g pi
pes
that
are
sup
plie
d.
ø22
.2 B
raze
dø
9.52
Bra
zed
Gas
Liqu
id
*1*1
550
6020
74
1160
(60)1100
141
213240
2 x
2-14
x 2
0 O
val h
ole
14075
58
22
40
2 x
2-14
x 2
0 O
val h
ole
(Ins
talla
tion
supp
ort h
ole)
54
Ref
riger
ant s
ervi
ce
valv
e <
Gas
>
Ref
riger
ant s
ervi
ce
valv
e <
Liqu
id>
1
83
(fro
nt a
nd b
ack,
2 p
oint
s)N
ote
8*
Det
acha
ble
leg 506 (503~509)
470 (467~473)
(550)22
40
80 23
(Installation support hole pitch)
(Mounting pitch)
834
720
(880
)
80 23(I
nsta
llatio
n su
ppor
t hol
e pi
tch)
(M
ount
ing
pitc
h)
550
880
6
608
ø45
Kno
ckou
t hol
e
ø34
Kno
ckou
t hol
eø5
2 or
ø27
Kno
ckou
t hol
e
Fron
t thr
ough
hol
e
Fron
t thr
ough
hol
eFr
ont t
hrou
gh h
ole
Fron
t thr
ough
hol
e
140
x 77
Kno
ckou
t hol
e
ø65
or ø
40 K
nock
out h
ole
Fron
t thr
ough
hol
e
inle
tou
tlet
Rc1
-1/2
Scr
ewR
c1-1
/2 S
crew
Rc3
/4 S
crewSpe
cific
atio
nsU
sage
For
pip
es
For
wire
s
For t
rans
miss
ion
cabl
es
Wat
er p
ipe
Dra
in p
ipe
NO
.
Unit : mm
PFD-P250VM-E
PFD-P500VM-E
Y
LX
Z
Y
LX
Z
Model L X Y Z
PFD-P500VM-E 580 967 270 714
Model L X Y Z
PFD-P250VM-E 580 581 222 739
Unit : mm
Unit : mm
3. Center of Gravity
11
(1) Indoor unit
PUHY-P250YHM-A (-BS)
PQHY-P250YHM-A(-BS)
Model X Y Z
PUHY-P250YHM-A (-BS) 334 329 652
1100
60
550880
506
YX
Z
1160
80
720
Model X Y Z
PQHY-P250YHM-A (-BS) 418 250 532
760 80
X
920
Y
724
1470
Z
60
760
Unit : mm
Unit : mm
12
(2) Outdoor unit / Heat source unit
PFD-P250VM-E
u
Not
e: 1
. The
dot
ted
lines
sho
w fi
eld
wiri
ng.
2.
The
add
ress
set
ting
of th
e in
door
uni
t sho
uld
alw
ays
be o
dd.
3.
The
out
door
uni
t to
whi
ch th
e in
door
uni
t is
conn
ecte
d w
ith th
e tra
nsm
issi
on li
ne,
the
addr
ess
of th
e ou
tdoo
r uni
t sho
uld
be th
e in
door
uni
t +50
.
4. M
ark
i
ndic
ates
term
inal
bed
,
con
nect
or,
b
oard
inse
rtion
con
nect
or
or
fast
enin
g co
nnec
tor o
f con
trol b
oard
.
0F E D CBA9
09 8 7 6
54321
91 2 3 4
5678
0 87
654321
21
21
71
23
45
6
CN7V
CN24
CN25
X11
SW8
SW4
SW11
(1st
digit)
SW12
(2nd
digi
t)SW
14
SW7
SW2
SW1
SW3
SWC
SW5
Add
ress
(odd
)
12
34
56
12
32
12
12
12
11
2
T
CN3T
3
CN28
CN31
CN29
CN20
CN21
CN60
CN22
Z3
33P1
97
51
31
31
31
1
CNT
CND
CN90
CN33
CNP
54
32
16
54
32 CN
51
1
CN52
Deh
umid
ify
ZNR9
01DS
A1
CN3A
ZNR1
F901
X06
X05X
04
321 2
CN32
321X0
1
CN2MI.B
.
1
X07 Z1
Insi
de s
ectio
n of
con
trol b
ox
RC
21
21
TB15
Failu
re o
utpu
t
Dis
tant
loca
tion
on/o
ff<n
o vo
ltage
or c
urre
nt>
Sta
tus
outp
ut
Dis
tant
loca
tion
on/o
ff<w
ith v
olta
ge a
nd c
urre
nt>
Powe
r sup
ply
DC30
V, A
C100
/200
V
Sw
itch(
norm
al/lo
cal)
Pow
er s
uppl
y D
C12
~24V
Pow
er s
uppl
y
380/
400/
415V
(50H
z)
400
/415
V(6
0Hz)
DC
24~3
0V
Indo
or u
nit
Con
trol w
iring
LED
dis
play
(failu
re)
LED
dis
play
(sta
tus)
LED
dis
play
(pow
er s
uppl
y)
3N~
LED
dis
play
(che
ck)
SW
9
2 3 4 5154321
B2B1BCA2A1AC 54321C
IFB
3
L3A1S B1 L2L1 X1
11 22 1 6 5 1 2
PE
N
F1
3 4 5 6
31ZN
R1
31CN1
DSA1
PE
TB23
TB21
LL
TB22
CN53
TB2
S.B
.
CN54
L3
TB5
SH
IELD
L2L1 L4
FAN
over
cur
rent
dete
ctio
n
51F
Z1
ZNR2
52F
Z3
51F
52F
MF
TH24
TH21
TH22
TH23
6 5 4 3 2 1
LEV
SY
MB
OL
NA
ME
DS
A1
Sur
ge a
bsor
ber
LED
dis
play
(po
wer
sup
ply)
F90
1
ZNR1
, ZNR
2, ZN
R901
MF
I.B.
S.B
.IF
BT
B2
TB
5T
B15
TB
21
TB
22T
B23
F1
T LEV
52F
51F
33P
1
RC
L4L3L2L1Z3
Z1
X11
SW
C(I
.B.)
SW
14(I
.B.)
SW
12(I
.B.)
SW
11(I
.B.)
SW
9S
W4(
I.B.)
SW
3(I.B
.)S
W2(
I.B.)
SW
1(I.B
.)
Sur
ge a
bsor
ber
boar
d
Sw
itch
(out
let/i
nlet
tem
p.co
ntro
l)
Flo
at s
witc
h
Fus
e<6-
3/6A
>
Var
isto
r
Tran
sfor
mer
Ele
ctro
nic
linea
r ex
pan.
valv
eC
onta
ctor
(fan
I/D
)O
ver
curr
ent r
elay
(fa
n I/D
)
Fus
e<5A
>
The
rmis
tor
(inle
t tem
p.de
tect
ion)
Sw
itch
(con
nect
ion
No.
set)
Sw
itch
(for
mod
e se
lect
ion)
Sw
itch
(for
cap
acity
cod
e)S
witc
h (f
or m
ode
sele
ctio
n)S
witc
h (f
or m
odel
sel
ectio
n)
Aux
iliar
y re
lay(
chec
k)
LED
dis
play
(fa
ilure
)LE
D d
ispl
ay (
stat
us)
LED
dis
play
(ch
eck)
Sw
itch
(nor
mal
/loca
l)
TH
24T
H23
TH
22T
H21
Sw
itch
(1st
dig
it ad
dres
s se
t)S
witc
h (2
nd d
igit
addr
ess
set)
Fan
mot
orIn
door
con
trol
ler
boar
d
Pow
er s
ourc
e te
rmin
al b
edTr
ansm
issi
on te
rmin
al b
ed
Ext
erna
l inp
ut/o
utpu
t boa
rd
Tran
smis
sion
term
inal
bed
MA
Rem
ote
cont
rolle
r
Term
inal
bed
for
dist
ant l
ocat
ion
on/o
ff<
With
vol
tage
and
cur
rent
>
Term
inal
bed
for
dist
ant l
ocat
ion
on/o
ff<
No
volta
ge o
r cu
rren
t>
Aux
iliar
y re
lay(
fan
failu
re d
etec
tion)
Aux
iliar
y re
lay(
fan)
The
rmis
tor
(pip
ing
tem
p.de
tect
ion/
gas)
The
rmis
tor
(pip
ing
tem
p.de
tect
ion/
liqui
d)
The
rmis
tor
(out
let t
emp.
dete
ctio
n)
Term
inal
bed
for
dist
ant l
ocat
ion
disp
lay
Ext
erna
l inp
ut a
dapt
er
(PA
C-S
A88
HA
)
CN
525(
gree
n)
1(br
own)
Z
Indo
or u
nit
cont
rol b
oard
Rel
ay c
ircui
t
The
sign
al in
put o
f the
deh
umid
ify o
rder
is to
conn
ect w
iring
refe
rrin
g to
the
botto
m fi
gure
.
SW
Pow
er
Dis
tant
con
trol p
anel
SW
:Def
umid
ify o
rder
(fiel
d su
pply
and
con
stru
ctio
n)
Z
Z:R
elay
(Con
tact
: M
inim
um a
pplic
able
load
DC
12V
1m
A or
less
)
u
u
u
t t t t
4. Electrical Wiring Diagrams
13
(1) Indoor unit
14
PFD-P500VM-E
t t t t t t t t
1.Thedottedlinesshowfieldwiring.
2.Itiswiringfor1refrigerantsystem
atthetimeofshipping.
ChangewiringandSW2,3,4(No.1&No.2)asthisfigure
infield
whenyouchangeitto
2refrigerantcircuit
3.SetuptheaddressofNo.1
board
intheoddnumber,andsetupthe
addressofNo.2
board
intheevennumber.
But,setuptheaddressoftheNo.2
board
intheNo.1
board
+1.
4.Theoutdoorunitto
whichtheindoorunitisconnectedwiththe
transmissionline,theaddressoftheoutdoorunitshouldbethe
indoorunit+50.
5.Mark
indicatesterm
inalbed,
connector,
board
insertionconnector
orfasteningconnectorofcontrolboard.
Note:
SW8
SW4
SW7
SW2
SWCSW
5
0F E DCB
A9
09 8 7
65
432
19
1
2 3 45
6
78
0 87
654321
65
74321
CN24
CN25
12
21
X11
CN7V
Address
(odd)
SW11
(1stdigit)
SW12
(2nd
digit)
SW14
No.1
CN51
CN52
Dehumidify
1345
1 2345
2
ZNR9
01DS
A1
ZNR1
F901
X06X0
5X0
4X0
1X0
7
CN3A
CN32
CN2M
I.B.1
321 2 3211
59
15
13
73
1CNT
CND
CN90
13CN
33CN
P31
Z1
TCN3T
31
CN28
21
CN31 1
23
21
CN29
32
22
11
1CN20
CN21
CN60
CN22 21
654
Z3
33P1
SW1
SW3
TH24-1
TH21-1
TH22-1
TH23-1
LEV2
LEV1
1234566 5 4 3 2 1
AD.B.
6543
12
6543
12
6543
12
LEV1
ALE
V1B
LEV1
21
Insidesectionofcontrolbox
RC
21
TB15
A1S B1
2 1 6 5
DC24~30V
No.1
Indoorunit
Controlw
iring
LEDdisplay(No.1
failure)
LEDdisplay(status)
TB5-1
SHIELD
L3L1
1 3
ZNR1
31CN1
DSA
1
S.B.
3
L3L2L1
1 2
N
F1
Powersupply
3N~
380/400/415V(50Hz)
400/415V(60Hz)
LEDdisplay(powersupply)
PETB
2
L5
3 4 5 6Switch(norm
al/local)
SW9
No1.Failure
output
Distantlocationon/off
<novoltageorcurrent>
No1.Statusoutput
Distantlocationon/off
<with
voltageandcurrent>
No2.Statusoutput
No2.Failure
output
PowersupplyDC30V,A
C100/200V
PowersupplyDC12~24V
LEDdisplay(No.2
failure)
DC24~30V
No.2
Indoorunit
Controlw
iring
LEDdisplay(check)
L4L2LL
L L
54321
S A2B2B2B1BCA2A1AC 54321C
IFBCN
54TB
22
CN53
TB21
TB23 SHIELD
TB5-2 34
X11
1 2
PE
X12
<note2
>
CN3A
1CN
2M
1 2 3CN
32
21 32
1231I.B
.25
43
21
CN52
54
32
1
CN51
Dehumidify
ZNR9
01
F901
ZNR1 DSA1
X01
X07
X04
X05
X06
CNP
CN33
CN90
CND
CNT
CN3T
12
CN22
CN21
CN20 1
12
2CN29 1
2321
CN31
12CN28
531
CN60
12
34
56
31
13
73
15
11
39
Z2
<note2>
33P2
T
Z3CN25
CN24
12
CN7V
12
34
56
7
21
X12
SW5
SWC
SW12
(2nd
digit)
SW11
(1stdigit)
SW8
Address
(odd)
SW3
SW1
SW2
SW7
SW4
SW14
0F E DCB
A90
9 8 7
65
432
19
1
2 3 45
6
78
0 87
654321
No.2
FAN
overcurrent
detection
51F
Z1
ZNR2
Z2
52F
Z3
TH24-2
TH21-2
TH22-2
TH23-2
51F
52F
MF
NAME
SYMBOL
Surgeabsorber
DSA1
L5
ZNR1,ZNR2,ZNR901
LEDdisplay(No.2
failure)
LEDdisplay(status)
LEDdisplay(check)
LEDdisplay(powersupply)
MARemote
controller
RC
TB21
TB15
TB5-1,-2
TB2
IFB
S.B.
AD.B.
I.B.1,I.B.2
MF
Surgeabsorberboard
Switch(outlet/inlettemp.control)
Floatswitch
Varistor
Transform
er
Electroniclinearexpan.valve
Contactor(fanI/D)
Overcurrentrelay(fanI/D)
Therm
istor(inlettemp.detection)
Switch(connectionNo.set)
Switch(formodeselection)
Switch(forcapacitycode)
Switch(formodeselection)
Switch(formodelselection)
Auxiliary
relay(check)
LEDdisplay(No.1
failure)
Switch(norm
al/local)
TH24-1,TH24-2
SW1(I.B.)
SW2(I.B.)
SW3(I.B.)
SW4(I.B.)
SW11(I.B.)
SW12(I.B.)
SW14(I.B.)
SWC(I.B.)
X11,X12
Z1,Z2
Z3
L1
L2
L3
L4
SW9
TH23-1,TH23-2
TH22-1,TH22-2
TH21-1,TH21-2
33P1,33P2
51F
52F
LEV1,2
TF1
F901
TB23
TB22
Switch(1stdigitaddressset)
Switch(2nddigitaddressset)
Fanmotor
Indoorcontrollerboard
Adapterboard
Powersourceterm
inalbed
Transmissionterm
inalbed
Externalinput/outputboard
Transmissionterm
inalbed
Term
inalbedfordistantlocationon/off
<Withvoltageandcurrent>
Term
inalbedfordistantlocationon/off
<Novoltageorcurrent>
Auxiliary
relay(fanfailure
detection)
Auxiliary
relay(fan)
Therm
istor(pipingtemp.detection/gas)
Therm
istor(pipingtemp.detection/liquid)
Therm
istor(outlettemp.detection)
Term
inalbedfordistantlocationdisplay
Fuse<6.3/6A>
Fuse<5A>
(fieldsupply
andconstruction)
Power
SW
Indoorunit
controlboard
Z1(brown)
5(green)
CN52
Thesignalinputofthedehumidify
orderisto
connectwiringreferringto
thebottom
figure.
Relaycircuit
Externalinputadapter
(PAC-SA88HA)
SW:Defumidify
order
Z:Relay(Contact:Minimum
applicableload
DC12V1mAorless)
Distantcontrolpanel
Z
Howto
connectincase
of2refrigerantcircuit.
Remove
theLEV1Bconnector
fromAD.B.board,and
connectitto
CN60of
I.B.2
board.
Connectaconnectorto
CN3A,CN2M
ofI.B.2
board.
<note2>
6 5 4 3 2 1
CN60
654321
CN3A
CN2M
I.B.2
1 2 3 2 1
LEV2
<note2>
Howto
setupto
SW2,3,4.
(Incase
of2refrigerantcircuit)
PFD-P500VM-E
(atthetim
eofshipping)
ON
65
43
21
ON
65
43
21
10
98
7
ON
54
32
1 ON
54
32
110
98
7
ON
65
43
21
ON
65
43
21
2refrigerant
circuit
1refrigerant
circuit
SW2
SW3
SW4
Externalinput-output
board
(IFB)
Thecaseofwith-voltageinput...A
Thecaseofno-voltageinput....B
Whenusingtheexternalinputfunctionontheindoorunit
thatisconnectedto
atwo-refrigerantcircuit,connectthe
short-circuitplate
thatissuppliedwiththeunitto
the
appropriate
term
inalsontheexternalinput-outputboard.
AC
A1
A2
BC
B1
B2
A B
TB23
TB21
u
u
u
u
u
u
PUHY-P250YHM-A
For
ope
ning
/clo
sing
the
bypa
ssci
rcui
t
Out
door
uni
t hea
t exc
hang
erca
paci
ty c
ontr
ol
Sol
enoi
dva
lve
Con
trol
box
inte
rnal
tem
pera
ture
TH
BO
X
Pip
e te
mpe
ratu
re
Z24
,25
The
rmis
tor
Sub
cool
byp
ass
outle
tte
mpe
ratu
re
Dis
char
ge p
ipe
tem
pera
ture
AC
C in
let p
ipe
tem
pera
ture
Sub
cool
ed li
quid
ref
riger
ant
tem
pera
ture
OA
tem
pera
ture
IGB
T te
mpe
ratu
reF
unct
ion
setti
ng c
onne
ctor
TH
HS
TH
7
TH
6T
H5
TH
4T
H3
TH
2
Pow
er s
uppl
y
Exp
lana
tion
Indo
or/O
utdo
or tr
ansm
issi
onca
ble
Cen
tral
con
trol
tran
smis
sion
cabl
e
Ter
min
albl
ock
TB
7
TB
3T
B1Sym
bol
Pre
ssur
e co
ntro
l,Ref
riger
ant f
low
rate
con
trol
DC
rea
ctor
DC
L
SV
1a
LEV
2a,b
LEV
1Li
near
expa
nsio
nva
lve
Sol
enoi
dva
lve
HIC
byp
ass,
Con
trol
s re
frig
eran
tflo
w in
HIC
circ
uit
CT
12,2
2,3
CH
11C
rank
case
hea
ter(
for
heat
ing
the
com
pres
sor)
Cur
rent
sen
sor(
AC
)M
agne
tic r
elay
(inve
rter
mai
n ci
rcui
t)72
CLo
w p
ress
ure
Dis
char
ge p
ress
ure
Hig
h pr
essu
re p
rote
ctio
n fo
r th
eou
tdoo
r un
itP
ress
ure
switc
hP
ress
ure
sens
or63
LS
63H
1
Sym
bol
Exp
lana
tion
4-w
ay v
alve
21S
4a,b
For
ope
ning
/clo
sing
the
bypa
ssci
rcui
t und
er th
e O
/SS
V5b
SV
9
63H
S1
<S
ymbo
l exp
lana
tion>
*1.S
ingl
e-do
tted
lines
indi
cate
wiri
ng
not
sup
plie
d w
ith th
e un
it.*2
.Dot
-das
h lin
es in
dica
te th
e co
ntro
l
box
bou
ndar
ies.
*3.R
efer
to th
e D
ata
book
for
conn
ectin
g
inpu
t/out
put s
igna
l con
nect
ors.
*4.D
aisy
-cha
in te
rmin
als
(TB
3) o
n th
e
out
door
uni
ts in
the
sam
e re
frig
eran
t
sys
tem
toge
ther
.*5
.Fas
ton
term
inal
s ha
ve a
lock
ing
fu
nctio
n.M
ake
sure
the
term
inal
s
are
sec
urel
y lo
cked
in p
lace
afte
r
inse
rtio
n.P
ress
the
tab
on th
e
term
inal
s to
rem
oved
them
.*6
.Con
trol
box
hou
ses
high
-vol
tage
par
ts.
B
efor
e in
spec
ting
the
insi
de o
f the
c
ontr
ol b
ox,tu
rn o
ff th
e po
wer
,kee
p
the
unit
off f
or a
t lea
st 1
0 m
inut
es,
a
nd c
onfir
m th
at th
e vo
ltage
bet
wee
n
FT
-P a
nd F
T-N
on
INV
Boa
rd h
as d
ropp
ed
to D
C20
V o
r le
ss.
M1
M2
SV
1a
Z3
21
M-N
ET
pow
ersu
pply
circ
uit
C5
LED
3:C
PU
in
ope
ratio
n
LED
1:N
orm
al
ope
ratio
n
SC
-L1
SC
-L2
12
WU
SC
-W
1
Z5
R1
R2
R3C
3
C2F3
F2
F1
Z1
Z2
R5
D1
R4
R6
C17
Dio
deB
ridge
C7
C8
C9
C10
C4
C1
C6
Pow
er S
ourc
e3N 50
/60H
z38
0/40
0/41
5VN
L3L2
L1
TB
1N
L3L2
L1
L
F4
AC
250V
6.3A
T
blac
k
whi
te
red 31 C
N3
gree
n
TB
24
N
TB
23
L3 TB
22
L2 TB
21
L1
CN
1B4
13
1C
N1A
UU
U
F1,
F2,
F3
AC
250V
6.3A
TUZ4
DS
A
CN
2
6 5 3 1
Noi
seF
ilter
UZN
R01
U
31
CN
5re
d3
CN
4bl
ue1
47 1 CN
INV
CN
VD
C
4 1FA
N B
oard
F01
DC
700V
4A T
C63
0C
631
R63
1
R63
0IP
M
CN
18V
blue
CN
4re
dC
N5
21
13
12
234 1
CN
21bl
ue
CN
22re
d
6 5 4 3
TH
BO
X
LED
2:E
rror
Fan
mot
or(H
eat e
xcha
nger
)
M 3V
DC
LR
1R
5*5 bl
ack
red
C10
0
2 431
72C bl
ack
red
SC
-P1
SC
-P2
4
CN
1
1
LED
1 N
orm
al o
pera
tion(
lit)
/Err
or(b
link)C
N5V
yello
wC
N6
21
3
3
1C
N4
12
CN
2
15 27 1C
NT
YP
C1
RS
H1
TH
HS
*6 FT
-P
FT
-N
P N
INV
Boa
rd
R34
C30
C32
C34
C36
R30
R32
C31
C33
C35
C37
R31
R33
blac
k
whi
te
red
R35
CT
3S
C-L
3
IGB
T
SC
-U
SC
-V
CT
12C
T22
red
whi
tebl
ack
blac
kw
hite
red U
VW
MS
3
M
otor
(Com
pres
sor)
Cen
tral
con
trol
tran
smis
sion
cabl
e
Indo
or/O
utdo
ortr
ansm
issi
onca
ble
Indo
or/O
utdo
ortr
ansm
issi
onca
ble
*4
TP
2T
P1
TB
7S
M2
M1TB
3
M-N
ET
Boa
rd
13
CN
04re
d
LED
1:P
ower
sup
ply
to In
door
/Out
door
tran
smis
sion
line
CN
102
43
21
CN
S2
yello
w
21
54
32
CN
ITre
d
1
63H
1P
LEV
2bM
LEV
2aMM
LEV
1123456
CN
LVA
CN
LVB
red
123456
5 4 3 2 16
CN
LVC
red
3 1C
NT
YP
2bl
ack
Z24
3 2 1
Z25
CN
TY
P5
gree
n
CN
TY
P4
gree
n
4 3 2 1
CN
213
red
CN
212
2 1
CN
990
2 1
TH
6
TH
7
TH
3
TH
5
21 363
LS
63H
S1
21 3
TH
2
TH
4
3 2 1C
N20
2re
d
CN
201
23 1
CN
215
blac
k2 1
CN
211
21re
dC
NIT
yello
wC
NS
25
12
34
OF
F
ON
12
34
12
34
CN
41
CN
40
CN
102 4
32
1C
N3D 1
23
red
CN
3S 12
3
blue
CN
3N 12
3
*3
yello
wC
N3K 1
2C
NA
Cre
d2
13
F01
AC
250V
3.15
A T
6 5 3 1
SV
9
X09
X10
CN
508
blac
k
X08
X07
1356
CN
507
red
6 5 3 1
SV
5bC
N50
6
X06
X05
3 121
S4a
CN
504
gree
nX
04
X03
CH
11
3 1C
N50
3bl
ue
2 1C
N50
2X
02
X01
21S
4b
1 1C
N50
1
2 3
CN
AC
2bl
ack
65 72C
12C
N72
red
31
CN
DC
pink
12
CN
T01
13
12
21
21
CN
801
yello
wC
NT
02C
N33
2bl
ueC
N4
CN
2
7 5 2 1
CP
U p
ower
supp
ly c
ircui
t
Pow
er fa
ilure
dete
ctio
n ci
rcui
t
Con
trol
Boa
rdLE
D1
SW
1
ON
OF
F1
10S
W2
ON
OF
F1
10S
W3
ON
OF
F1
10S
W4
ON
OF
F1
10
ON
OF
F1
10S
W5
543
12V
1
CN
51
*3
SW
U2
SW
U1
10's
digi
t1'
sdi
git
Uni
t add
ress
setti
ngLE
D1
Dis
play
setti
ngF
unct
ion
setti
ng
Com
pres
sor
ON
/OF
F o
utpu
tE
rror
det
ectio
n ou
tput
TB
7 P
ower
sele
ctin
gco
nnec
tor
LED
3:Li
t whe
n po
wer
ed
LED
2:C
PU
in o
pera
tion
blac
kt t t t
t
t
t t
15
(2) Outdoor unit / Heat source unit
16
PQHY-P250YHM-A
~
CNAC
4
31
CN83
CNO
UT2
43
21
65
CNPW
42
1
75
3
tTH
312
CN21
2
tTH
6
12t
THIN
VCN
TYP1
black
LEVI
NVCN
LVE
123456
LEV2
b
CNLV
C re
d
123456
CN51
0ye
llow
CN50
9blu
e3
CNO
UT1
yello
w
blue
yellow
red
orange
41
1 2 3 4 5 6
6 5 4 3 2 1
CNLV
B re
dLE
V2a
tTH
812
CN99
2ye
llow
12
4
blu
eCN
63PW
MF1
SV4d
156X1
2
156
SV4b
SV7b
SV7a
3
DCL
t
M1
M2
SV1a
Z3
21
-+
C5
SC-L
1
SC-L
2
SC-W
1Z5
R1R2R3
C3 C2F3 F2 F1Z1
Z2
R5D1
R4 R6C1
7
Diod
eBr
idge
C7C8C9C10
C4
C1
C6
TB1
L
F4 AC25
0V6.
3A T
black
white
red 31 CN
3gr
een
TB24
TB23
TB22
TB21
CN1B
41
31
CN1A
UU
U
F1,F
2,F3
AC25
0V6.
3A T
UZ4
DSA
CN2
6 5 3 1
UZNR0
1
U
+
31
CN5
red
3CN
4blu
e1
C100
R1R5
black
red
2 431
72C bla
ckre
d
SC-P
1SC
-P2
4
CN1 1
CN6
21
CN4
12
CN2
157 1
CNTY
Pbla
ck
C1 RSH1
t THHS
FT-P
FT-N
++++
++++
R34
C30
C32
C34
C36
R30
R32
C31
C33
C35
C37
R31
R33
black
white
red
R35
CT3
SC-L
3
IGBT
SC-U
SC-V
CT12
CT22
red
white
black
black
white
red U
VW
TP2
TP1
TB7
SM
2M
1TB3
13
CN04
red
CN10
24
32
1CN
S2ye
llow
21
54
32
CNIT
red
1
63H1
P
LEV1
123456
CNLV
A
3 1CN
TYP2
black
Z24
3 2 1
Z25
CNTY
P5gr
een
CNTY
P4gr
een
4 2 1
CN21
3re
d
CN99
02 1
TH7
TH5
t t
21 363
LS
63HS
121 3
TH2
tTH
4
3 2 1CN
202
red
CN20
123 1
CN21
5bla
ck2 1
CN21
121
red
CNIT
yello
wCN
S25
12
34
14
14
CN41
CN40
CN10
2 43
21
CN3D
12
3
blue
CN3N
12
3
yello
w C
N3K 1
2CN
ACre
d2
13
F01
AC25
0V3.
15A
T
6 3 1
SV9
X09
CN50
8bla
ck
SV4a
X08
X07
1356
CN50
7re
d
6 5 3 1
CN50
6
X13
X05
3 121
S4a
CN50
4gr
een
X04
X03
CH11
3 1CN
503
blue
2 1CN
502
X02
12
CNAC
2bla
ck
65 72C
12CN
72re
d
31
CNDC
pink
12
CNT0
11
31
22
1CN
801
yello
wCN
T02
CN4
CN2
7 5 1
SW1ON
OFF 1 10
SW2ON
OFF 1 10
SW3ON
OFF 1 10
SW4ON
OFF 1 10
ON
OFF 1 10SW
5
543
12V
1
CN51SW
U2SW
U1
10's
digi
t1's di
git
*1.
Sin
gle-
dotte
d lin
es in
dica
te w
iring
not s
uppl
ied
with
the
unit.
*2.
Dot
-das
h lin
es in
dica
te th
e co
ntro
lbo
x bo
unda
ries.
*3.
Ref
er to
the
Dat
a bo
ok fo
r co
nnec
ting
inpu
t/out
put s
igna
l con
nect
ors.
*4.
Dai
sy-c
hain
term
inal
s (T
B3)
on
the
heat
sou
rce
units
in th
e sa
me
re
frig
eran
t sys
tem
toge
ther
.*5
.Fa
ston
term
inal
s ha
ve a
lock
ing
func
tion.
Mak
e su
re th
e te
rmin
als
are
secu
rely
lock
ed in
pla
ce a
fter
inse
rtio
n. P
ress
the
tab
on th
ete
rmin
als
to r
emov
ed th
em.
*6.
Con
trol
box
hou
ses
high
-vol
tage
par
ts.
Bef
ore
insp
ectin
g th
e in
side
of t
heco
ntro
l box
, tur
n of
f the
pow
er, k
eep
the
unit
off f
or a
t lea
st 1
0 m
inut
es,
and
conf
irm
that
the
volta
ge b
etw
een
FT-
P a
nd F
T-N
on
INV
Boa
rd h
as d
ropp
edto
20V
DC
or
less
.*7
.R
efer
to th
e D
ata
book
for
wiri
ng
term
inal
blo
ck fo
r P
ump
Inte
rlock
(T
B8)
.
<S
ymbo
l exp
lana
tion>
Sub
cool
ed li
quid
ref
riger
ant
tem
pera
ture
TH
6
Pip
e te
mpe
ratu
reT
H3
Sub
cool
byp
ass
outle
t tem
pera
ture
TH
2
Pre
ssur
e co
ntro
l, R
efrig
eran
t flo
wra
te c
ontr
olLE
V2a
, b
Out
let t
emp.
det
ect o
f hea
t ex
chan
ger
for
inve
rter
TH
INV
Wat
er o
utle
t tem
pera
ture
TH
8
Hea
t exc
hang
er c
apac
ity c
ontr
olS
V7a
, bH
eat e
xcha
nger
cap
acity
con
trol
SV
4a, b
, d
Hea
t exc
hang
er fo
r in
vert
erLE
VIN
V
For
ope
ning
/clo
sing
the
bypa
ssci
rcui
t und
er th
e O
/S
HIC
byp
ass,
Con
trol
s re
frig
eran
tflo
w in
HIC
circ
uit
Fan
mot
or (
Rad
iato
r pa
nel)
MF
1
SV
1a
For
ope
ning
/clo
sing
the
bypa
ssci
rcui
t
Z24
, 25
The
rmis
tor
Ope
ratio
n O
N s
igna
l, P
ump
Inte
rlock
Dis
char
ge p
ipe
tem
pera
ture
AC
C in
let p
ipe
tem
pera
ture
Wat
er in
let t
empe
ratu
re
IGB
T te
mpe
ratu
reF
unct
ion
setti
ng c
onne
ctor
TH
HS
TH
7
TH
5T
H4
TB
8
Pow
er s
uppl
yE
xpla
natio
n
Indo
or/H
eat s
ourc
e tr
ansm
issi
onca
ble
Cen
tral
con
trol
tran
smis
sion
cabl
e
Term
inal
bloc
k
TB
7
TB
3
TB
1Sym
bol
DC
rea
ctor
DC
L
LEV
1Li
near
expa
nsio
nva
lve
Sol
enoi
dva
lve
CT
12, 2
2, 3
CH
11C
rank
case
hea
ter
(for
hea
ting
the
com
pres
sor)
Cur
rent
sen
sor
(AC
)M
agne
tic r
elay
(in
vert
er m
ain
circ
uit)
72C
Low
pre
ssur
eH
igh
pres
sure
Hig
h pr
essu
re p
rote
ctio
n fo
r th
ehe
at s
ourc
e un
itP
ress
ure
switc
h
Pre
ssur
ese
nsor
63LS
63H
1Sym
bol
Exp
lana
tion
4-w
ay v
alve
21S
4a
SV
9
63H
S1
RE
LAY
Boa
rd
Noi
seFi
lter
INV
Boa
rd
M-N
ET
Boa
rd
Con
trol B
oard
Pow
er S
ourc
e3N
~50
/60H
z38
0/40
0/41
5V
NL3
L2L1
NL3
L2L1
P N
Pum
p In
terlo
ckO
pera
tion
ON
sig
nal
M
otor
(Com
pres
sor)
MS
3~
1TB
82
34
*7
*5
*6
*4OFF
ON
*3
LED1
*3
Unit
addr
ess
setti
ngLE
D1Di
spla
yse
tting
Func
tion
setti
ng
Com
pres
sor O
N/O
FF o
utpu
tEr
ror d
etec
tion
outp
ut
TB7
Powe
rse
lect
ing
LED3
:Lit
when
pow
ered
LED2
:CPU
in o
pera
tion
LED
1 : N
orm
al o
pera
tion
(lit)
/E
rror
(bl
ink)
CP
U p
ower
supp
ly c
ircui
t
Pow
er fa
ilure
dete
ctio
n ci
rcui
t
M-N
ET
pow
ersu
pply
circ
uit
Cen
tral
con
trol
tran
smis
sion
cabl
e
Indo
or/
Hea
t sou
rce
tran
smis
sion
cabl
e
LED
1:P
ower
sup
ply
to In
door
/Hea
t sou
rce
tran
smis
sion
line
MMMM
˚˚˚ ˚ ˚˚ ˚ ˚
conn
ecto
rM
˚
NL3
L2L1
Outdoor Unit : PUHY-P250YHM-AIndoor Unit : PFD-P250VM-E
AC
C
SC
C(H
IC C
ircui
t)LE
V1
SV
1a
63H
1
21S
4a
ST
3
ST
6
63H
S1
ST
7
TH
4
TH
2
TH
3
TH
7
TH
6
21S
4b
CP
1
CJ1
SV
5b
CV
1
LEV
2b
ST
2
SV
9C
P2
BV
2
O/S
CO
MP
CJ2
TH
5
63LS
ST
1B
V1
TH
23
TH
22
LEV
2a
17
5. Refrigerant Circuit Diagram And Thermal Sensor
Outdoor Unit : PUHY-P250YHM-A x 2Indoor Unit : PFD-P500VM-E
SCC(HIC circuit)
SCC(HIC circuit)
LEV1
SV1a
63H1
21S4a
ST3
ST6
63HS1 CJ2
ST7
ACCTH4
TH2
TH3
TH7
21S4b
TH5
CP1
CJ1
63LS
SV5b
CV1
LEV2a
LEV2b
ST1
ST2
BV1
SV9 CP2
BV2
O/S
COMP
LEV1
SV1a
63H1
21S4a
ST3
ST6
63HS1 CJ2
ST7
ACCTH4
TH6
TH6
TH2
TH3
TH7
21S4b
TH5
CP1
CJ1
63LS
SV5b
CV1
LEV2a
LEV2b
ST1
ST2
BV1
SV9 CP2
BV2
O/S
COMP
TH23-1
TH22-1 TH22-2
TH23-2
18
Outdoor Unit : PUHY-P500YSHM-AIndoor Unit : PFD-P500VM-E
SCC(HIC circuit)
SCC(HIC circuit)
LEV1
SV1a
63H1
21S4a
ST3
ST6
63HS1 CJ2
ST7
ACCTH4
TH2
TH3
TH7
21S4b
TH5
CP1
CJ1
63LS
SV5b
CV1
LEV2a
LEV2b
ST1
ST2
BV1
SV9 CP2
BV2
O/S
COMP
LEV1
SV1a
63H1
21S4a
ST3
ST6
63HS1 CJ2
ST7
ACCTH4
TH6
TH6
TH2
TH3
TH7
21S4b
TH5
CP1
CJ1
63LS
SV5b
CV1
LEV2a
LEV2b
ST1
ST2
BV1
SV9 CP2
BV2
O/S
COMP
TH23
TH22
Gas twinningpipe
Liquid twinningpipe
19
Heat source Unit : PQHY-P250YHM-AIndoor Unit : PFD-P250VM-E
63H
S1
O/S
TH
4T
H5
TH
3
CJ2
SV
1a
CP
1
CJ121S
4a
ST
3
Acc
ST
17
63H
1
Com
p
CV
8
CV
1
CV
6a
TH
8
TH
7
SV7b
SV7a
CV
4a
CV
3a
CV
7a
BV
2
SV
4aS
V4b
SV4d
Sol
enoi
d va
lve
bloc
k
TH
INV
Com
pone
ntco
oler
hea
t ex
chan
ger
LEV
INV
ST1
3
Wat
er c
ircui
t
SV
9
63LS
ST
2
LEV
1H
IC
TH
2T
H6
LEV
2a
LEV
2b
BV
1S
T1
TH
22
TH
22
20
Heat source Unit : PQHY-P250YHM-A x 2Indoor Unit : PFD-P500VM-E
TH23-1
TH22-1 TH22-2
TH23-2
63HS1
O/S
TH4 TH5
TH3
CJ2
SV1a
CP1
CJ1
21S4a
ST3
Acc
ST1763H1
Comp
CV8
CV1
CV6a
TH8
TH7
SV7bSV7a
CV4a
CV3a
CV7a
BV2
SV4a SV4b SV4d
Solenoid valve block
THINV
Componentcooler heat exchanger
LEVINV
ST13
Water circuit
SV9
63LS
ST2
LEV1HIC
TH2TH6
LEV2a
LEV2b
BV1ST1
63HS1
O/S
TH4 TH5
TH3
CJ2
SV1a
CP1
CJ1
21S4a
ST3
Acc
ST1763H1
Comp
CV8
CV1
CV6a
TH8
TH7
SV7bSV7a
CV4a
CV3a
CV7a
BV2
SV4a SV4b SV4d
Solenoid valve block
THINV
Componentcooler heat exchanger
LEVINV
ST13
Water circuit
SV9
63LS
ST2
LEV1HIC
TH2TH6
LEV2a
LEV2b
BV1ST1
21
(1) Outdoor unit
Outdoor twinning kit
49(2 pcs.)
98
241
183
83
505
342
588
160
62
49
62Distributer Distributer
Pipe cover(Dot-dashed part)
12.7
12.7
12.7
12.7
Local brazing
Note 215.88
15.88
28.58
Note 2 25.4
22.2
25.422.2
Pipe cover(Dot-dashed part)
Local brazing28.58
(2 pcs.)
22.2 19.05
12.715.8812.7 9.52
28.5822.2
For Gas pipe: For Liquid pipe:
ID: Inner Diameter OD: Outer Diameter
mmCMY-Y100VBK2<Deformed pipe(Accessory)>
The angle of the branch pipe is within against the ground.
2. Use the attached pipe to braze the port-opening of the distributer.3. Pipe diameter is indicated by inside diameter.
Note 1. Reference the attitude angle of the branch pipe below the fig.
Distributer
15
15
For PUHY-P-YSHM, following optional Outdoor Twinning Kit is needed to use to combine to refrigerant flows of its PUHY-P-YHM. Details of selecting the proper kit should be referred to the System Design Section.
6. Optional Parts
22
7. Controller
23
(1) MA remote controller
PAR-21MAA : built-in the indoor unit.
Functions
ON/OFF Run and stop operation for a single group
Operation mode switching
Switches between Cool / Fan / Heat.Operation modes vary depending on the air conditioner unit.
Temperature setting
Permit / Prohibit local operation
Weekly scheduler
Individually prohibit operation of each local remote control function (Start/Stop, Change operation mode, Set temperature, Reset filter).
1: When the local remote controller inactivation command is received from the master system controller," " is displayed.
Indoor unit intake temperature
Prohibition/permissionof specified mode (Cooling prohibited /heating prohibited /cooling-heating prohibited)
Measures the intake temperature of the indoor unit when the indoor unit is operating.
ErrorWhen an error is currently occurring on an air conditioner unit, the afflicted unit and the error code are displayed.
Test run This operates air conditioner units in test run mode.
Item Description Operations Display
ON/OFF/Temperature setting can be done up to 8 times one day in the week.The time can be set by the minute.
By the setting from System Controller, the operation for the following modes is prohibited. At cooling prohibited : CoolAt heating prohibited : HeatAt cooling-heating prohibited : Cool, Heat
1
:Each unit
:Collective
:Each block:Each group
:Each floor :Not available
Sets the temperature for a single group Range of temperature setting Cool : 19°C- 30°C (14°C - 30°C) [66°F- 86°F]( [57°F - 86°F])Heat : 17°C- 28°C (17°C - 28°C) [68°F- 82°F]( [68°F - 82°F])
Function to limitthe setting rangeof roomtemperature(Set temperature range limit)
Set temperature range limit to cooling, heating, or auto mode.
Setting/releasing of simplified locking for remote control switch can be performed. · Locking of all switches · Locking of all switches except Start/Stop switch
Easy-to-operatesimplified lockingfunction(Auto lock function)
TEMP.
( ) in case of using middle-temperature on PDFY, PEFY-VML/VMR/VMS/VMH-Eby setting DipSW7-1 to ON. Yet, PEFY-P-VMH-E-F is excluded.
PAR-21MAA
ON/OFF
FILTER
CHECK
OPERATION CLEAR
TEST
TEMP.
MENU
BACK DAYMONITOR/SET
CLOCK
ON/OFF
ERROR CODEAFTER
TIMERTIME SUN MON TUE WED THU FRI SAT
ON
OFF
Hr
AFTER
FILTERFUNCTION
ONLY1Hr.
WEEKLYSIMPLE
AUTO OFF
(Front view) (Side view) (Rear view)
External dimension
Unit:mm
120
130 19 46
83.5
•Dot matrix liquid crystal screen displays complete operating status.
• Digital display lets you set temperature in 1°C/°F increments.
• Weekly Timer: up to 8 ON/OFF/Temperature Settings can be made per day. The time can be set in 1-minute increments. The setting is kept in nonvolatile memory.No need to worry about resetting at power failure.
• Equipped with a thermostat sensor in the remote controller that makes possible more comfortable room temperature control.
• Ability to limit the set temperature (upper and lower temperature can be set.)
• Ability to restrict setting changes (either all changes or all except ON/OFF)
• Constantly monitors for malfunctions in the system, and is equipped with a "self-diagnosis function" that lets you know by error code immediately when a malfunction occurs.
• Dimensions: 130(W) x120(H) x 19(D) mm
(1) Correction by temperature
PUHY-P250YHM-A, PUHY-P500YSHM-A
PQHY-P250YHM-A
indicates the standard value.
indicates the standard value.
Cooling Capacity Cooling Input
The correction curves indicate the values measured at the point where the compressor was operated at its maximum capacity.
19
24
1512
Indoor unit inlet temperature (˚CWB)Indoor unit inlet temperature (˚CWB)
Inpu
t Cor
rect
ion
Coe
ffici
ent
0.7
0.8
0.9
1.0
1.1
1.2
1.3
-15 -10 -5 0 5 10 15 20 25 30 35 40 45
Outdoor unit inlet temperature (˚CDB)
Cap
acity
cor
rect
ion
coef
ficie
nt
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
-15 -10 -5 0 5 10 15 20 25 30 35 40 45
Outdoor unit inlet temperature (˚CDB)
19
15
12
24
Rat
io
Water-volume [m3/h]
Water-volume [m3/h]
Wat
er-p
ress
ure
drop
[kP
a]
CapacityInput
4 5 6 7 8
CapacityInput
Inlet-water temp. [˚C]
Rat
ioR
atio
Intake air temp. (Room temp.) [˚CWB]
CapacityInput
Inlet-water temp. (Cooling)
Intake air temp. (Cooling) Water-pressure drop (Cooling)
Water volume (Cooling)
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
1.2
1.1
1.0
0.9
0.8
0.7
1.1
1.05
1
0.95
0.9
30
20
10
0
10
12 13 14 15 16 17 18 19 20 21 22 23 24
15 20 25 30 35 40 45 4.5 5.0 5.5 6.0 6.5 7.0 7.5
24
III. Product Data1. Capacity Curves
(2) Part Load Performance
PFD unit +PUHY-P250YHM-A, PUHY-P500YSHM-A
PFD unit +PQHY-P250YHM-A
10HP SystemIndoor Unit : PFD-P250VM-EOutdoor Unit : PUHY-P250YHM-A
CoolingCapacity (kW)
100%Capacity
90%Capacity
80%Capacity
70%Capacity
60%Capacity
50%Capacity
40%Capacity
40 ˚C 26.6 10.05 8.75 7.68 6.79 6.08 5.50 5.0435 ˚C 28.0 9.30 8.11 7.18 6.41 5.82 5.13 4.6030 ˚C 29.4 8.65 7.61 6.81 6.17 5.50 4.94 4.5225 ˚C 30.2 8.10 7.21 6.56 6.00 5.38 4.89 4.5020 ˚C 31.1 7.72 6.92 6.26 5.74 5.27 4.85 4.4715 ˚C 31.6 7.54 6.87 6.31 5.80 5.35 4.94 4.56
* Indoor air temperature condition: 27˚CDB/19˚CWB
20HP SystemIndoor Unit : PFD-P500VM-EOutdoor Unit : PUHY-P250YHM-A ✕ 2, PUHY-P500YSHM-A
CoolingCapacity (kW)
100%Capacity
90%Capacity
80%Capacity
70%Capacity
60%Capacity
50%Capacity
40%Capacity
30%Capacity
40 ˚C 53.2 20.09 17.46 15.24 13.49 12.08 10.94 10.07 8.3735 ˚C 56.0 18.60 16.19 14.30 12.77 11.51 10.11 9.05 8.0630 ˚C 58.8 17.30 15.24 13.58 12.24 10.79 9.76 8.92 7.6825 ˚C 60.5 16.19 14.47 13.06 11.79 10.59 9.67 8.79 7.5520 ˚C 62.2 15.44 13.88 12.53 11.42 10.48 9.64 8.52 7.4915 ˚C 63.3 15.07 13.83 12.63 11.58 10.67 9.84 8.62 7.64
* Indoor air temperature condition: 27˚CDB/19˚CWB
Outdoor unit inlettemp. (˚CDB)
System Power input (kW)
Outdoor unit inlettemp. (˚CDB)
System Power input (kW)
10HP SystemIndoor Unit : PFD-P250VM-EHeat source Unit : PQHY-P250YHM-A
* Indoor air temperature condition: 27˚CDB/19˚CWB
20HP SystemIndoor Unit : PFD-P500VM-EHeat source Unit : PQHY-P250YHM-A ✕ 2
* Indoor air temperature condition: 27˚CDB/19˚CWB
25.4 9.00 8.02 7.24 6.59 6.08 5.7126.7 8.50 7.59 6.87 6.28 5.80 5.4628.0 7.95 7.13 6.47 5.93 5.50 5.2028.0 7.37 6.64 6.05 5.57 5.19 4.9128.0 6.95 6.28 5.75 5.31 4.95 4.7028.0 6.69 6.06 5.55 5.14 4.81 4.57
50.8 17.99 16.04 14.47 13.19 12.16 11.43 9.74 8.5853.4 16.99 15.19 13.74 12.55 11.61 10.93 9.37 8.3056.0 15.90 14.26 12.95 11.87 11.01 10.39 8.97 8.0056.0 14.74 13.28 12.10 11.14 10.37 9.82 8.55 7.6956.0 13.91 12.57 11.49 10.61 9.91 9.40 8.25 7.4556.0 13.37 12.11 11.10 10.27 9.61 9.14 8.35 7.31
CoolingCapacity (kW)
100%Capacity
90%Capacity
80%Capacity
70%Capacity
60%Capacity
50%Capacity
40 ˚C35 ˚C30 ˚C25 ˚C20 ˚C15 ˚C
CoolingCapacity (kW)
100%Capacity
90%Capacity
80%Capacity
70%Capacity
60%Capacity
50%Capacity
40%Capacity
30%Capacity
40 ˚C35 ˚C30 ˚C25 ˚C20 ˚C15 ˚C
Outdoor unit inlettemp. (˚CDB)
System Power input (kW)
Outdoor unit inlettemp. (˚CDB)
System Power input (kW)
25
(3) Correction by refrigerant piping length
(4) Correction by indoor unit airflow rate
PUHY-P250YHM-A, PUHY-P500YSHM-A, PQHY-P250YHM-A
PFD-P250VM-E
PFD-P500VM-E
1. PUHY-P250YHM-A, PQHY-P250YHM-A Equivalent length = (Actual piping length to the farthest indoor unit) + (0.42 ✕ number of bent on the piping) m
2. PUHY-P500YSHM-A Equivalent length = (Actual piping length to the farthest indoor unit) + (0.50 ✕ number of bent on the piping) m
• How to obtain piping equivalent length
0.9
0.95
1
1.05
Airflow rate (m3/min)
Cap
acity
cor
rect
ion
fact
or
136
: 50/60Hz Standard
184130 140 150 160 170 180 190
Airflow rate (m3/min)
Cap
acity
cor
rect
ion
fact
or
: 50/60Hz Standard
0.9
0.95
1
1.05
250 270 290 310 330 350345255
To obtain a decrease in cooling/heating capacity due to refrigerant piping extension, multiply by the capacity correction factor based on the refrigerant piping equivalent length in the table below.
Piping equivalent length (m)
Cap
acity
cor
rect
ion
coef
ficie
nt
0.7
0.8
0.9
1
0 20 40 60 80 100 120 140 160 180
26
(5) SHF Curves
0.4
0.5
0.6
0.7
0.8
0.9
1
30 40 50 60 70 80
RH (%)
SH
F
130% 120%110%100% 90% 80% 70%
Standard Capacity Ratio Standard Capacity Ratio
0.93
0.4
0.5
0.6
0.7
0.8
0.9
1
30 40 50 60 70 80
RH (%)S
HF
130% 120%110%100% 90% 80% 70%
35 45 55 65 75
Indoor Temperature 27˚CDB
35 45 55 65 75
0.4
0.5
0.6
0.7
0.8
0.9
1
30 40 50 60 70 80
RH (%)
SH
F
120% 110% 100% 90% 80% 70%
Standard Capacity Ratio Standard Capacity Ratio
0.4
0.5
0.6
0.7
0.8
0.9
1
30 40 50 60 70 80
RH (%)
SH
F
120% 110%100% 90% 80% 70%
35 45 55 65 75 35 45 55 65 75
Operation Temparature Range : Indoor : 12˚CWB~24˚CWBOutdoor : -15˚CDB~43˚CDB(RH : 30~80%)
Standard Point " " : Indoor : 27˚CDB / 19˚CWB Outdoor : 35˚CDB / -
Indoor Temperature 24˚CDB
Indoor Temperature 20˚CDBIndoor Temperature 22˚CDB
27
(1) Measurement condition
1m
1m
SeriesSound pressure level
(dB [Type A])
PFD-P250VM-E 59
PFD-P500VM-E 63
SeriesSound pressure level
(dB [Type A])
PUHY-P250YHM-A 57
SeriesSound pressure level
(dB [Type A])
PUHY-P500YSHM-A 60
SeriesSound pressure level
(dB [Type A])
PQHY-P250YHM-A 49
Measurement location
Measurement location
1m
1m
Indoor unit
Outdoor unit
Heat source unit
Measurement location
1m
1m
1m
1m
Measurementlocation
28
2. Sound Levels
(2) NC Curves
10
20
30
40
50
60
70
80
90
Oct
ave
band
sou
nd le
vel (
dB)
PUHY-P500YSHM-A
63 125 250 500 1k 2k 4k 8k
NC-40
NC-30
NC-20
NC-60
NC-50
NC-70
Octave band central frequency (Hz)
Approximate minimumaudible limit oncontinuous noise
63 125 250 500 1k 2k 4k 8k dB(A)Standard 62.0 65.0 63.0 57.0 53.5 49.0 44.0 38.0 60.0Low Noise Mode 61.0 56.5 47.0 42.0 39.5 35.5 34.0 27.5 47.0When Low Noise Mode is set,the A/C system's capacity is limited. The system could return to normal operation from Low Noise Mode automatically in the case that the operation condition is severe.
50/60Hz50/60Hz
10
20
30
40
50
60
70
80
90
63 125 250 500 1k 2k 4k 8k
NC-40
NC-30
NC-20
NC-60
NC-50
NC-70
Oct
ave
band
sou
nd le
vel (
dB)
PQHY-P250YHM-A
Approximate minimumaudible limit oncontinuous noise
63 125 250 500 1k 2k 4k 8k dB(A)Standard 50/60Hz 61.0 54.0 48.0 43.5 42.0 39.0 43.0 32.5 49.0Low noise modeWhen Low noise mode is set,the A/C system's capacity is limited. The system could return to normal operationfrom Low noise mode automatically in the case that the operation condition is severe.
Octave band central frequency (Hz)
50/60Hz 60.5 53.0 47.5 43.0 38.0 37.0 40.5 28.5 47.0
10
20
30
40
50
60
70
80
90
Oct
ave
band
sou
nd le
vel (
dB)
PUHY-P250YHM-A
Standard 50/60Hz
Low noise 50/60Hz
Standard 50/60Hz
Low noise 50/60Hz
63 125 250 500 1k 2k 4k 8k
NC-40
NC-30
NC-20
NC-60
NC-50
NC-70
Octave band central frequency (Hz)
Approximate minimumaudible limit oncontinuous noise
63 125 250 500 1k 2k 4k 8k dB(A)Standard 59.0 62.0 60.0 54.0 50.5 46.0 41.0 35.0 57.0 Low Noise Mode 58.0 53.5 44.0 39.0 36.5 32.5 31.0 24.5 44.0 When Low Noise Mode is set,the A/C system's capacity is limited. The system could return to normal operation from Low Noise Mode automatically in the case that the operation condition is severe.
50/60Hz50/60Hz
10
20
30
40
50
60
70
80
90
Oct
ave
band
pre
ssur
e le
vel (
dB)
0dB
= 2
0µP
a
PFD-P500VM-E
63 125 250 500 1k 2k 4k 8k
NC-40
NC-30
NC-20
NC-60
NC-50
NC-70
Octave band central frequency (Hz)
Approximate minimumaudible limit oncontinuous noise
6382.8
12570.5
25065.6
50057,0
1k55.1
2k51.1
4k44.7
8k37.9
dB(A)63.0
(External static pressure 120Pa)
10
20
30
40
50
60
70
80
90
Oct
ave
band
pre
ssur
e le
vel (
dB)
0dB
= 2
0µP
a
PFD-P250VM-E
63 125 250 500 1k 2k 4k 8k
NC-40
NC-30
NC-20
NC-60
NC-50
NC-70
Octave band central frequency (Hz)
Approximate minimumaudible limit oncontinuous noise
63 125 250 500 1k 2k 4k 8k dB(A)70.6 62.7 60.5 56.1 54.8 45.7 39.7 32.9 59.0
(External static pressure 120Pa)
(External static pressure 0Pa)
(External static pressure 0Pa)
(External static pressure 0Pa)
Standard 50/60Hz
Low noise 50/60Hz
29
30
3. Fan Characteristics Curves
B52B481170B55B491140B54B501080B54B511040B55B52973B56B54930B60B54845B59B57797
-B56748
Note1 Pulley and V-belt is procured on site.Note2 Mitsubishi Electric shall not be held responsible for the pulley modified on site.
Ø315-B-2-42
Ø355-B-2-42Ø315-B-2-42
Ø250-B-2-42Ø280-B-2-42
--Ø160-B-2-28
Ø160-B-2-28Ø170-B-2-28
Fan pulley
Ø300-B-2-42
Ø355-B-2-42
Ø315-B-2-42
Ø250-B-2-42
Ø280-B-2-42
Ø200-B-2-42Ø212-B-2-42Ø224-B-2-42Ø236-B-2-42
Ø280-B-2-42Ø280-B-2-42Ø280-B-2-42
Ø165-B-2-28
Ø165-B-2-28Ø165-B-2-28
Ø180-B-2-28Ø170-B-2-28
Ø160-B-2-28
Ø160-B-2-28
Ø170-B-2-28
Ø165-B-2-28Ø165-B-2-28Ø165-B-2-28Ø165-B-2-28Ø170-B-2-28Ø160-B-2-28
V-belt
60Hz
No. Rotationalspeed(rpm) Motor pulley Fan pulley V-belt Motor pulley
50Hz
Fan pulley V-beltRotationalspeed(rpm) Motor pulley Fan pulley V-belt Motor pulley
123456789
B50B511135B55B511070B52B511015B54B50978B55B53905B58B56850B58B55803
-B55780
Note1 Pulley and V-belt is procured on site.Note2 Mitsubishi Electric shall not be held responsible for the pulley modified on site.
--Ø315-B-2-42Ø165-B-2-38
Ø315-B-2-42Ø355-B-2-42
Ø160-B-2-38Ø170-B-2-38
Ø250-B-2-42Ø236-B-2-42
Ø250-B-2-42Ø250-B-2-42
Ø160-B-2-38
Ø160-B-2-38 Ø280-B-2-42Ø180-B-2-38 Ø300-B-2-42Ø250-B-2-42
Ø180-B-2-38
Ø170-B-2-38
Ø180-B-2-38Ø170-B-2-38Ø160-B-2-38
Ø180-B-2-38Ø170-B-2-38 Ø315-B-2-42
Ø300-B-2-42Ø280-B-2-42Ø315-B-2-42
Ø160-B-2-38
Ø355-B-2-42Ø160-B-2-38
60HzzH05
No.
12345678
PFD-P250VM-E
PFD-P500VM-E
0
100
200
300
400
500
600
700
800
900
1000
0
100
200
300
400
500
600
700
800
130 140 150 160 170 180 190
250 270 290 310 330 350345255
184136
: 50/60Hz, Standard
900rpm
1000rpm
1100rpm
800rpm
Fan rotation speed
Internalresistance
Output 3.7kW
1200rpm1
2
34
5
6
7
89
1
2
3
4
5
6
7
8
1100rpm
Fan rotation speed
Output 5.5kW
800rpm
900rpm
Internalresistance
1000rpm
1200rpm
Airflow rate (m3/min)
Airflow rate (m3/min)
Tota
l sta
tic p
ress
ure
(Pa)
Tota
l sta
tic p
ress
ure
(Pa)
: 50/60Hz, Standard
NominalDiameter (A)
<Ø>
Motor pulleyOutside
Diameter (C)<Ø>
(D)<Ø>
(E)<mm>
Bore (B)<Ø>
160165170180160165170180
171176181191171176181191
7171717171717171
31.331.331.331.341.341.341.341.3
(F)<mm>
9999
10101010
28
38
NominalDiameter (A)
<Ø>
Fan pulleyOutside
Diameter (C)<Ø>
(D)<Ø>
(E)<mm>
Bore (B)<Ø>
200212224236250280300315355
211223235247261291311326366
808080808080809090
45.345.345.345.345.345.345.345.345.3
(F)<mm>
121212121212121212
42
Shape of the pulley (unit : mm)
Shape of the V belt (unit : mm)
40˚
16.5
11.0
H (outer center)
M8
Rz 6.3
Rz 3.2
Rz 6.3
Rz
6.3
19
Rz 3.2
Rz
3.2
(keyway)
5.5
12.5
59
44
12.5
Rz 3.2
Rz 6.3
Rz 6.3
D
C (
d:P
ulle
y ou
tsid
e di
amet
er)
A (
dm:P
ulle
y no
min
al d
iam
eter
)10
Belt
dm:Pulley nominal diameter
201 < dm
dm 160 34˚36˚38˚
161 < dm 200
B
E
Rz
3.2
F
* Use a red V-belt.
* Use long dog-point set screws.
31
(Figure 1) Pulley's degree of parallelism(Figure 2) Belt tension
LC
Belt deflection force W(N)
C:Center distance (mm)
K
K
K
KK
(1) The fan pulley and the motor pulley must be aligned to meet the criteria shown in Figure 1 and Table 1.
(2) Set the tension for the V-belt so that the deflection force falls within the range as shown in Table 2.
(3) After the belt has been broken in on the pulley (after 24 to 28 hours of operation), check the belt for
looseness and adjust the belt tension as specified in step (2) above as necessary. When setting the
tension for a new belt, set it to a value 1.15 times the deflection force W.
(4) After the initial adjustment of the belt as described in step (3) above, readjust the belt tension every
2000 hours of operation. [The belt is due for replacement when the belt has been stretched by 2% of its
original length, including the initial stretch of 1%. (Approx. 5000 hours of operation)]
Note: Apply Screwlock (not supplied) to the retention screw on the pulley to prevent the screw from
loosening. Tighten the screw to the torque of 13.5 N·m. (Screwlock: Equivalent to ThreeBond 1322N)
(Table 1) Horizontal alignment of the pulley
Pulley
Degree of parallelismK (arc-minute) Note
10 or smallerCast iron pulley
• Horizontal pulley alignment and proper belt tension
ModelPower souce
frequency[Hz]
Deflectionforce
[W(N)]
Amount ofdeflection
[mm]
PFD-P250VM-E
PFD-P500VM-E
50605060
15.0 to 16.514.5 to 15.520.0 to 22.519.5 to 21.0
5.0 to 5.5
5.04.5 to 5.0
(Table 2) Belt tension
Equivalent to 3 mm of displacement per 1 m.
32
(1) PFD-P250VM-E
Note1. If the PUHY system is designed to use cooling mode under outdoor temperature 10˚C, H’<=15m.Note2. As bents cause pressure loss on transportation of refrigerant, fewer bents design is better;
Piping length needs to consider the actual length and equivalent length which bents are counted.Equivalent piping length (m)=Actual piping length+"M" x Quantity of bent.
IU : Indoor unit , OU : Outdoor unit , HU: Heat source unit
LA
H (
HU
abo
ve IU
)
H' (
HU
und
er IU
)
Table : IV-1-(1)-2. Bent equivalent length "M"M (m/bent)Outdoor Model
PQHY-P250 0.42
Table : IV-1-(1)-1. Piping length (m)Max. lengthPiping in the figureItem Max. equivalent length
AHeight between OU/HU and IU (OU/HU above IU) Height between OU/HU and IU (OU/HU under IU)
OU: Outdoor Unit, IU: Indoor Unit, HU: Heat source Unit
190165Farthest IU from OU/HU (L) HH'
5040
--
(mm)Outdoor Pipe(Gas)Pipe(Liquid)
PQHY-P250 ø22.20ø9.52
*1*1. A>=90m , ø12.70mm
Table : IV-1-(1)-3. Piping "A" size selection rule
(mm)Indoor Unit size Pipe(Gas)Pipe(Liquid)P250 ø22.20ø9.52
Table : IV-1-(1)-4. Indoor unit piping size selection rule
PUHY-P250 ø22.20ø9.52 *1
PUHY-P250 0.42
Fig.IV-1-(1)A : PUHY Piping Design Fig.IV-1-(1)B : PQHY Piping Design
LA
OU
H (
OU
abo
ve IU
)
H' (
OU
und
er IU
)
IUIU
HU
IV. System Design1. Piping Design
33
(2) PFD-P500VM-E (two refrigerant circuit system)
Table : IV-1-(2)-2. Bent equivalent length "M"M (m/bent)Outdoor Model
PQHY-P250 0.42
Table : IV-1-(2)-1. Piping length (m)Max. lengthPiping in the figureItem Max. equivalent length
AHeight between OU/HU and IU (OU/HU above IU)Height between OU/HU and IU (OU/HU under IU)
OU: Outdoor Unit, IU: Indoor Unit, HU: Heat source Unit
190165Farthest IU from OU/HU (L) HH'
5040
--
(mm)Outdoor Pipe(Gas)Pipe(Liquid)
PQHY-P250 ø22.20ø9.52
*1*1. A>=90m , ø12.70mm
Table : IV-1-(2)-3. Piping "A" size selection rule
(mm)Indoor Unit size Pipe(Gas)Pipe(Liquid)P500 ø22.20ø9.52
Table : IV-1-(2)-4. Indoor unit piping size selection rule
PUHY-P250 ø22.20ø9.52 *1
PUHY-P250 0.42
IU : Indoor unit , OU : Outdoor unit , HU: Heat source unit
Note1. If the PUHY system is designed to use cooling mode under outdoor temperature 10˚C, H’<=15m.Note2. As bents cause pressure loss on transportation of refrigerant, fewer bents design is better;
Piping length needs to consider the actual length and equivalent length which bents are counted.Equivalent piping length (m)=Actual piping length+"M" x Quantity of bent.
L
L
A
OU OU
IU
L
L
A
IU
Fig.IV-1-(2)A : PUHY Piping Design
H (
OU
abo
ve IU
)
H' (
OU
und
er IU
)
Fig.IV-1-(2)B : PQHY Piping DesignH
(H
U a
bov
e IU
)
H' (
HU
und
er IU
)
HU HU
34
35
(3) PFD-P500VM-E (single refrigerant circuit system)
Outdoor Twinning KitCMY-Y100VBK2
Note1. If the A/C system is designed to use cooling mode under outdoor temperature 10˚C, H’<=15m.Note2. As bents cause pressure loss on transportation of refrigerant, fewer bents design is better;
Piping length needs to consider the actual length and equivalent length which bents are counted.Equivalent piping length (m)=Actual piping length+"M" x Quantity of bent.
H (
OU
abo
ve IU
)
H' (
OU
und
er IU
)
h
T
AL
S
IU : Indoor unit , OU : Outdoor unit
Fig.IV-1-(3)A : Piping scheme
2m To indoor unitTo indoor unitTo indoor unit 2mTo indoor unit
Trap (gas pipe only)
Upwardincline
Downwardincline
Install the pipes from the outdoor unit to the branch joint with a downward incline.
If the length of pipe between the branch joint and outdoor unit exceeds 2 m, provide at rap at a distance 2 m or less from the branch joint.
OK NG
OU
OU
max
Table : IV-1-(3)-2. Bent equivalent length "M"M (m/bent)Outdoor Model
PUHY-P500 0.50
Table : IV-1-(3)-1. Piping length (m)Max. lengthPiping in the figureItem Max. equivalent length
AHeight between OU and IU (OU above IU)Height between OU and IU (OU above IU)
OU: Outdoor Unit, IU: Indoor Unit
190Farthest IU from OU (L)h -Height between OU and OU
S+T -Distance between OU and OU
HH'
--
(mm)Outdoor CMY-Y100VBK2
CMY-Y100VBK2; PUHY-P500
Table : IV-1-(3)-3. Piping "A" size selection rule
(mm)Indoor Unit size P500
Table : IV-1-(3)-4. Indoor unit piping size selection rule
IU
1650.110
5040
Pipe(Gas)Pipe(Liquid)ø28.58ø15.88
Pipe(Gas)Pipe(Liquid)ø28.58ø15.88
(4) Refrigerant charging calculation
Sample connection : with PFD-P500VM-E (single refrigerant circuit)
Amount of refrigerant to be chargedRefrigerant for extended pipes (field piping) is not factory-charged to the outdoor unit. Add an appropriate amount ofrefrigerant for each pipe on site.
Record the size of each liquid pipe and the amount of refrigerant that was charged on the outdoor unit for future reference.
Calculating the amount of refrigerant to be chargedThe amount of refrigerant to be charged is calculated with the size of the on-site-installed liquid pipes and their length.Calculate the amount of refrigerant to be charged according to the formula below.Round up the calculation result to the nearest 0.1kg. (i.e., 16.08 kg = 16.1 kg)
<Amount of refrigerant to be charged>
Calculating the amount of refrigerant to be charged
Amount of factory-charged refrigerant
Sample calculation
Total length of ø15.88 liquid pipe x 0.2
(m)x0.2(kg/m)
A : ø9.52B : ø9.52C : ø15.88
3m 2m 2m
9.0kg
+
Total length of ø12.7 liquid pipe x 0.12
(m)x0.12(kg/m)
PUHY-P250YHM-A
5.0kgPQHY-P250YHM-A
Model Charged amount
Total length for ø15.88each pipe size :ø9.52
C=2mA+B=5m=2x0.2+5x0.06+4.0=4.7kg
This yields the following result :
+
Total length of ø9.52 liquid pipe x 0.06
(m)x0.06(kg/m)
+
OU OU
Outdoor Twinning KitCMY-Y100VBK2
P500
A B
C
IU
CautionCharge Liquid RefrigerantFilling the equipment with gas refrigerant will result in a power loss due to transformation of refrigerant in the tank.
Model connected indoorunit
Amount for the indoor unit
P250 model 2.0kg
2 kg x 2 when connected to a system with two outdoor units
P500 model4.0kg
36
2. Designing of water circuit system
37
E.H
S.T
T T
C.T.P
C.T
P
3-way valve
1) Example of basic water circuit
Example of basic water circuit for water heat source CITY MULTI
The water circuit of the water heat source CITY MULTI connects the heat source unit with the cooling tower/auxiliary heat source/heat storage tank/circulation pump with a single system water piping as shown in the figure below. The se-lector valve automatically controls to circulate water toward the cooling tower in the cooling season, while toward the heat storage tank in the heating season. If the circulation water temperature is kept in a range of 10~45˚C[50~113˚F]* regardless of the building load, the water heat source CITY MULTI can be operated for either cooling or heating. There-fore in the summer when only cooling load exists, the temperature rise of circulation water will be suppressed by operat-ing the cooling tower. While in the winter when heating load increases, the temperature of circulation water may be drop-ped below 10˚C[50˚F]. Under such situation, the circulation water will be heated with the auxiliary heat source if it drops below a certain temperature.When the thermal balance between cooling and heating operation is in a correct proportion, the operation of the auxiliary heat source and cooling tower is not required.In order to control the above thermal balance properly and use thermal energy effectively, utilizing of heat storage tanks, and night-time discounted electric power as a auxiliary heat source will be economical.Meantime as this system uses plural sets of heat source unit equipped with water heat exchangers, water quality control is important. Therefore it is recommended to use closed type cooling towers as much as possible to prevent the circula-tion water from being contaminated.When open type cooling towers are used, it is essential to provide proper maintenance control such as that to install wa-ter treatment system to prevent troubles caused by contaminated circulation water.
S.T : Heating tank (Heat storage tank)
C.T : Cooling towerC.T.P : Cooling water pumpP : Circulation water pumpT : Thermostat for waterE.H : Electric heater
: Heat source unit for cooling operation: Heat source unit for heating operation
The indoor unit and refrigerant piping system are excluded in this figure.
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2) Cooling tower a) Types of cooling tower
Types of cooling towersThe cooling towers presently used include the open type cooling tower, open type cooling tower + heat ex-changer, closed type cooling tower, and air-cooled type cooling tower. However, as the quality control of circula-tion water is essential when units are installed in decen-tralized state inside a building, the closed type cooling tower is generally employed in such case.Although the circulation water will not be contaminated by atmospheric air, it is recommended to periodically blow water inside the system and replenish fresh water instead.In a district where the coil may be frozen in the winter, it is necessary to apply antifreeze solution to the circula-tion water, or take freeze protection measures such as to automatically discharge water inside the cooling coil at the stopping of the pump.When the open type cooling tower is used, be sure to install a water quality control device in addition to the freeze protection measures, as the water may be deter-iorated by atmospheric contaminants entered into the cooling tower and dissolved into the circulation water.
b) Calculation method of cooling tower capacityAll units of the water heat source CITY MULTI may possibly be in cooling operation temporarily (at pulling down) in the summer, however, it is not necessary to determine the capacity according to the total cooling capacity of all CITY MULTI units as this system has a wide operating water temperature range (10~45˚C) [50~113˚F]. It is determined in accordance with the value obtained by adding the maximum cooling load of an actual building, the in-put heat equivalent value of all CITY MULTI units, and the cooling load of the circulating pumps. Please check for the values of the cooling water volume and circulation water volume.
Closed type
Air-cooled type
Cooling tower capacity = (Refrigeration ton)
Qc : Maximum cooling load under actual state (kcal/h)Qw : Total input of water heat source CITY MULTI at simultaneous operation under
maximum state (kW)Pw : Shaft power of circulation pumps (kW)
Qc + 860 x (ΣQw + Pw)
3,900
Cooling tower capacity = (Refrigeration ton)
Qc : Maximum cooling load under actual state (BTU/h)Qw : Total input of water heat source CITY MULTI at simultaneous operation under
maximum state (kW)Pw : Shaft power of circulation pumps (kW)
* 1 Refrigerant ton of cooling tower capacity ≈ US refrigerant ton x (1+0.3)= 3,900 kcal/h = 15,500 BTU/h
Qc + 3,412 x (ΣQw + Pw)
15,500
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Determining the auxiliary heat source capacity
For the CITY MULTI water heat source system, a heat storage tank is recommended to use. When employment of the heat storage tank is difficult, the warming up operation should be arranged to cover the starting up heating load. Since the holding water inside the piping circuit owns heat capacity and the warming up operation can be assumed for about one hour except that in a cold region, the heat storage tank capacity is required to be that at the maximum daily heating load including the warming up load at the next morning of the holiday. However the auxiliary heat source capacity should be determined by the daily heating load including warming up load on the week day.For the load at the next morning of the holiday, heat storage is required by operating the auxiliary heat source even out-side of the ordinary working hour.
3) Auxiliary heat source and heat storage tankWhen the heating load is larger than the cooling load, the circulation water temperature lowers in accordance with the heat balance of the system. It should be heated by the auxiliary heat source in order to keep the inlet water temperature within the operating range (10˚C[50˚F] or more) of the water heat source CITY MULTI.
Further in order to operate the water heat source CITY MULTI effectively, it is recommended to utilize the heat storage tank to cover the warming up load in the morning and the insufficient heat amount.Effective heat utilization can be expected to cover insufficient heat at the warming up in the next morning or peak load time by storing heat by installing a heat storage tank or operating a low load auxiliary heat source at the stopping of the water heat source CITY MULTI. As it can also be possible to reduce the running cost through the heat storage by using the dis-counted night-time electric power, using both auxiliary heat source and heat storage tank together is recommended.The effective temperature difference of an ordinary heat storage tank shows about 5deg. even with the storing temperature at 45˚C[113˚F].However with the water heat source CITY MULTI, it can be utilized as heating heat source up to 15˚C[59˚F] with an effec-tive temperature of a high 30deg˚C[54deg˚F]. approximately, thus the capacity of the heat storage tank can be minimized.
a) Auxiliary heat sourceThe following can be used as the auxiliary heat source.
· Boiler (Heavy oil, kerosine, gas, electricity)· Electric heat (Insertion of electric heater into heat storage tank)· Outdoor air (Air-heat source heat pump chiller)· Warm discharge water (Exhaust water heat from machines inside building and hot water supply)· Utilization of night-time lighting· Solar heat
Please note that the auxiliary heat source should be selected after studying your operating environment and economical feasibility.
When heat storage tank is not used
QH = HCT ( 1 - ) - 1000 x Vw x ∆T - 860 x Pw
QH : Auxiliary heat source capacity (kcal/h)HCT : Total heating capacity of each water heat source CITY MULTI (kcal/h)COPH : COP of water heat source CITY MULTI at heatingVW : Holding water volume inside piping (m3)∆T : Allowable water temperature drop = TWH - TWL (˚C)TWH : Heat source water temperature at high temperature side (˚C)TWL : Heat source water temperature at low temperature side (˚C)PW : Heat source water pump shaft power (kW)
1
COPh
QH = HCT ( 1 - ) - 8.343 x Vw x ∆T - 3412 x Pw
QH : Auxiliary heat source capacity (BTU/h)HCT : Total heating capacity of each water heat source CITY MULTI (BTU/h)COPH : COP of water heat source CITY MULTI at heatingVW : Holding water volume inside piping (G)∆T : Allowable water temperature drop = TWH - TWL (˚F)TWH : Heat source water temperature at high temperature side (˚F)TWL : Heat source water temperature at low temperature side (˚F)PW : Heat source water pump shaft power (kW)
1
COPh
40
When heat storage tank is not used
HQ1T · ( 1 - ) - 860 x Pw x T2
QH = x K (kcal) T1
QH1T : Total of heating load on weekday including warming up (kcal/day)T1 : Operating hour of auxiliary heat source (h)T2 : Operating hour of heat source water pump (h)K : Allowance factor (Heat storage tank, piping loss, etc.) 1.05~1.10
HQ1T is calculated from the result of steady state load calculation similarly by using the equation below.HQ1T = 1.15 x (ΣQ'a + ΣQ'b + ΣQ'c + ΣQ'd + ΣQ'f) T2 - ψ (ΣQe1 + ΣQe2 + ΣQe3) (T2 - 1)
Q'a : Thermal load from external wall/roof in each zone (kcal/h)Q'b : Thermal load from glass window in each zone (kcal/h)Q'c : Thermal load from partition/ceiling/floor in each zone (kcal/h)Q'd : Thermal load by infiltration in each zone (kcal/h)Q'f : Fresh outdoor air load in each zone (kcal/h)Q'e1 : Thermal load from human body in each zone (kcal/h)Q'e2 : Thermal load from lighting fixture in each zone (kcal/h)Q'e3 : Thermal load from equipment in each zone (kcal/h) : Radiation load rate 0.6~0.8T2 : Air conditioning hour
1
COPh
HQ1T · ( 1 - ) - 3,412 x Pw x T2
QH = x K (BTU) T1
QH1T : Total of heating load on weekday including warming up (BTU/day)T1 : Operating hour of auxiliary heat source (h)T2 : Operating hour of heat source water pump (h)K : Allowance factor (Heat storage tank, piping loss, etc.) 1.05~1.10
HQ1T is calculated from the result of steady state load calculation similarly by using the equation below.HQ1T = 1.15 x (ΣQ'a + ΣQ'b + ΣQ'c + ΣQ'd + ΣQ'f) T2 - ψ (ΣQe1 + ΣQe2 + ΣQe3) (T2 - 1)
Q'a : Thermal load from external wall/roof in each zone (BTU/h)Q'b : Thermal load from glass window in each zone (BTU/h)Q'c : Thermal load from partition/ceiling/floor in each zone (BTU/h)Q'd : Thermal load by infiltration in each zone (BTU/h)Q'f : Fresh outdoor air load in each zone (BTU/h)Q'e1 : Thermal load from human body in each zone (BTU/h)Q'e2 : Thermal load from lighting fixture in each zone (BTU/h)Q'e3 : Thermal load from equipment in each zone (BTU/h) : Radiation load rate 0.6~0.8T2 : Air conditioning hour
1
COPh
41
b) Heat storage tank
Heat storage tank can be classified by types into the open type heat storage tank exposed to atmosphere, and the closed type heat storage tank with structure separated from atmosphere. Although the size of the tank and its installation place should be taken into account, the closed type tank is being usually employed by considering corrosion problems.The capacity of heat storage tanks is determined in accordance with the daily maximum heating load that includes warm-ing up load to be applied for the day after the holiday.
HQ2T ( 1 - ) - 860 x Pw x T2 - QH x T2
V = (ton) ∆T x 1,000 x ηV
1
COPh
HQ2T ( 1 - ) - 3,412 x Pw x T2 - QH x T2
V = (Ibs) ∆T x ηV
1
COPh
When auxiliary heat source is operated during operation and even after stopping of water heat source CITY MULTI unit
HQ2T ( 1 - ) - 860 x Pw x T2
V = (ton) ∆T x 1,000 x ηV
HQ2T : Maximum heating load including load required for the day after the holiday (kcal/day)∆T : Temperature difference utilized by heat storage tank (deg˚C)ηV : Heat storage tank efficiency
HQ2T : 1.3 x (ΣQ'a + ΣQ'c + ΣQ'd + ΣQ'f) T2 - ψ(ΣQe2 + ΣQe3) (T2 - 1)
1
COPh
HQ2T ( 1 - ) - 3,412 x Pw x T2
V = (Ibs) ∆T x ηV
HQ2T : Maximum heating load including load required for the day after the holiday (BTU/day)∆T : Temperature difference utilized by heat storage tank (deg˚F)ηV : Heat storage tank efficiency
HQ2T : 1.3 x (ΣQ'a + ΣQ'c + ΣQ'd + ΣQ'f) T2 - ψ(ΣQe2 + ΣQe3) (T2 - 1)
1
COPh
HQ2T : Maximum heating load including load required for the day after the holiday (kcal/day)∆T : Temperature difference utilized by heat storage tank (deg˚C)ηV : Heat storage tank efficiency
HQ2T : 1.3 x (ΣQ'a + ΣQ'c + ΣQ'd + ΣQ'f) T2 - ψ(ΣQe2 + ΣQe3) (T2 - 1)
HQ2T : Maximum heating load including load required for the day after the holiday (BTU/day)∆T : Temperature difference utilized by heat storage tank (deg˚F)ηV : Heat storage tank efficiency
HQ2T : 1.3 x (ΣQ'a + ΣQ'c + ΣQ'd + ΣQ'f) T2 - ψ(ΣQe2 + ΣQe3) (T2 - 1)
When auxiliary heat source is operated after stopping of water heat source CITY MULTI unit
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4) Piping system
System example of water circuit
The following items should be kept in your mind in planning / designing water circuits.
a) All units should be constituted in a single circuit in principle.
b) When plural numbers of the water heat source CITY MULTI unit are installed, the rated circulating water flow rate should be kept by making the piping resistance to each unit almost same value. As an example, the reverse return system as shown below may be employed.
c) Depending on the structure of a building, the water circuit may be prefabricated by making the layout uniform.
d) When a closed type piping circuit is constructed, install an expansion tank usable commonly for a make-up water tank to absorb the expansion/contraction of water caused by temperature fluctuation.
e) If the operating temperature range of circulation water stays within the temperature near the normal temperature (summer : 29.4˚C[85˚F], winter : 21.1˚C[70˚F]), thermal insulation or anti-sweating work is not required for the piping inside buildings.
In case of the conditions below, however, thermal insulation is required.
· When well water is used for heat source water.· When piped to outdoor or a place where freezing may be caused.· When vapor condensation may be generated on piping due to an increase in dry bulb temperature caused by the entry of
fresh outdoor air.
Heatsource
unit
Indoor unit
Backflow prevention valvePump Strainer
3-way valve
3-way valve
Cooling tower Heating tank
Flexible joint
Refrigerant piping
ValveJoint
Drain
Y-shape strainer
Heatsource
unit
Indoor unit
Heatsource
unit
Indoor unit
Heatsource
unit
Indoor unit
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5) Practical System Examples and Circulation Water Control
Example-1 Combination of closed type cooling tower and hot water heat storage tank (using underground hollow slab)
Since the water heat source CITY MULTI is of water heat source system, versatile systems can be constituted by com-bining it with various heat sources.The practical system examples are given below.Either cooling or heating operation can be performed if the circulation water temperature of the water heat source CITY MULTI stays within a range of 10~45˚C [50~113˚F]. However, the circulation water temperature near 32˚C[90˚F] for cool-ing and 20˚C[68˚F] for heating is recommended by taking the life, power consumption and capacity of the air conditioning units into consideration. The detail of the control is also shown below.
By detecting the circulation water temperature of the water heat source CITY MULTI system with T1 (around 32˚C[90˚F]) and T2 (around 20˚C[68˚F]), the temperature will be controlled by opening/closing V1 in the summer and V2 in the winter.In the summer, as the circulation water temperature rises exceeding the set temperature of T1, the bypass port of V1 will open to lower the circulation water temperature. While in the winter, as the circulation water temperature drops, V2 will open following the command of T2 to rise the circulation water temperature.The water inside the heat storage tank will be heated by the auxiliary heat source by V3 being opened with timer op-eration in the night-time. The electric heater of the auxiliary heat source will be controlled by T3 and the timer. The start/stop control of the fan and pump of the closed type cooling tower is applied with the step control of the fan and pump following the command of the auxiliary switch XS of V1, that operates only the fan at the light load while the fan and pump at the maximum load thus controlling water temperature and saving motor power.
Heatsource
unit
Heat exchanger
Heat storagetank pump
T1~T4 : ThermostatV1~V2: Proportional type
motor-driven 3-way valveV3 : Motor-driven 3-way valveXS : Auxiliary switchMG : Magnetic switchEH : Electric heater
Heat storage tank
Auxiliaryheat source
T2
V2
EH
T4
MG
V3
T3
Cooling water pumpClosed typecooling tower
Expansion tank
Circulation water pump
V1
T1XS
44
Example-2 Combination of closed type cooling tower and hot water heat storage tank
In the summer, as the circulation water temperature rises exceeding the set temperature of T1, the bypass port of V1 will open to lower the circulation water temperature. In the winter, if the circulation water temperature stays below 25˚C[77˚F], V2 will open/close by the command of T2 to keep the circulation water temperature constant.The temperature of the hot water inside the heat storage tank will be controlled through the step control of the electric heater by step controller operation following the command of T3.During the stopping of the heat source water pump, the bypass port of V2 will be closed fully by interlocking thus pre-venting the high temperature water from entering into the system at the starting of the pump.The start/stop control of the fan and pump of the closed type cooling tower is applied with the step control of the fan and pump following the command of the auxiliary switch XS of V1, that operates only the fan at the light load while the fan and pump at the maximum load thus controlling water temperature and saving motor power.
Heatsource
unit
Closed typecooling tower
T1 : Proportional type, insertion system thermostatT2 : Proportional type, insertion system thermostatT3 : Proportional type, insertion system thermostatV1 : Proportional type, motor-driven 3-way valveV2 : Proportional type, motor-driven 3-way valveXS : Auxiliary switch (Duplex switch type)SC : Step controllerR : RelayMG : Magnetic
SC MG
T3
CV
V1
XS
R
V2
T2
Hot water heatstorage tank
Heat sourcewater pumpPump interlock
45
Example-3 Combination of closed type cooling tower and boiler
In the summer, as the circulation water temperature rises exceeding the set temperature of T1, the bypass port of V1 will close to lower the circulation water temperature. In the winter, if the circulation water temperature drops below 25˚C[77˚F], V2 will conduct water temperature control to keep the circulation water temperature constant.During the stopping of the heat source water pump, the bypass port of V2 will be closed fully by interlocking.The start/stop control of the fan and pump of the closed type cooling tower is applied with the step control following the command of the auxiliary switch XS of V1, thus controlling water temperature and saving motor power.
Heatsource
unit
Closed typecooling tower
T1 : Proportional type, insertion system thermostatT2 : Proportional type, insertion system thermostatT3 : Proportional type, insertion system thermostatV1 : Proportional type, motor-driven 3-way valveS : Selector switchR : RelayXS : Auxiliary switch (Duplex switch type)
Relay board
Boiler
XSV1
T1
V2
R
T2
Heat sourcewater pump
Pump interlock
46
Example-4 Combination of closed type cooling tower and heat exchanger (of other heat source)
In the summer, as the circulation water temperature rises exceeding the set temperature of T1, the bypass port of V1 will close to lower the circulation water temperature. In the winter, if the circulation water temperature drops below 26˚C[79˚F], V2 will conduct water temperature control to keep the circulation water temperature constant.During the stopping of the heat source water pump, the bypass port of V2 will be closed fully by interlocking.The start/stop control of the fan and pump of the closed type cooling tower is applied with the step control following the command of the auxiliary switch XS of V1, thus controlling water temperature and saving motor power.
Heatsource
unit
Closed typecooling tower
T1 : Proportional type, insertion system thermostatT2 : Proportional type, insertion system thermostatV1 : Proportional type, motor-driven 3-way valveV2 : Proportional type, motor-driven 3-way valveS : Selector switchR : RelayXS : Auxiliary switch (Duplex switch type)
Relay board
XSV1
T1
V2
T2
Heat sourcewater pump
Heat exchanger
Other heat source water
47
6) Pump interlock circuit
TM1
TM2
1
TB8
Heat source equipment
Heat source equipment
To next equipment
2
3
4
1
TB8
2
3
4
52P
MP
Site control panel ~ / N 240/230/220V
X : RelayTM1, 2 : Timer relay (closes after elapsing the set time when it is powered, while opens promptly when it is not powered)52P : Magnetic contactor
for heat source water pump
MP : Heat source water pump
MCB : Circuit breaker
*Remove the short circuit wire between 3 and 4 when wiring to TB8.
52P
TM1
MCB
TM2
This circuit uses the ìTerminal block for pump interlock (TB8)ì inside the electrical parts box of the heat source equipment.This circuit is for interlocking of the heat source equipment operation and the heat source water pump.
Wiring diagram
L1 N
Operating the heat source unit without circulation water inside the water piping can cause a trouble. Be sure to provide interlocking for the unit operation and water circuit. Since the terminal block is being provided inside the unit, use it as required.
48
Operation ON signal
Pump Interlock
Terminal No.
Output
Operation
TB8-1, 2
Relay contacts output Rated voltage : L1 - N : 220 ~ 240VRated load : 1A
· When Dip switch 2-7 is OFFThe relay closes during compressor operation.
· When DIP switch 2-7 is ON.The relay closes during reception of cooling or the heating operation signal from the controller.(Note : It is output even if the thermostat is OFF (when the compressor is stopped).)
Terminal No.
Input
Operation
TB8-3, 4
Level signal
If the circuit between TB8-3 and TB8-4 is open, compressor operation is prohibited.
3. Water piping work
49
Installation example of heat source unit
Although the water piping for the CITY MULTI WY system does not differ from that for ordinary air conditioning systems,
pay special attention to the items below in conducting the piping work.
1) Items to be observed on installation work· In order to equalize piping resistance for each unit, adapt the reverse return system.· Mount a joint and a valve onto the water outlet/inlet of the unit to allow for maintenance, inspection and replacement work. Be
sure to mount a strainer at the water inlet piping of the unit. (The strainer is required at the circulation water inlet to protect the heat source unit.)
* The installation example of the heat source unit is shown right.· Be sure to provide an air relief opening on the water piping properly, and purge air after feeding water to the piping system.· Condensate will generate at the low temperature part inside the heat source equipment. Connect drain piping to the drain piping
connection located at the bottom of the heat source equipment to discharge it outside the equipment.· At the center of the header of the heat exchanger water inlet inside the unit, a plug for water discharge is being provided. Use it for maintenance work or the like.· Mount a backflow prevention valve and a flexible joint for vibration control onto the pump.· Provide a sleeve to the penetrating parts of the wall to prevent the piping.· Fasten the piping with metal fitting, arrange the piping not to expose to cutting or bending force, and pay sufficient care for
possible vibration.· Be careful not to erroneously judge the position of the inlet and outlet of water. (Lower position : Inlet, Upper position : Outlet)
2) Thermal insulation work Thermal insulation or anti sweating work is not required for the
piping inside buildings in the case of the CITY MULTI WY system if the operating temperature range of circulation water stays within the temperature near the normal (summer : 29.4˚C[85˚F], winter : 21.1˚C[70˚F]).
In case of the conditions below, however, thermal insulation is required.
· Use of well water for heat source water· Outdoor piping portions· Indoor piping portions where freezing may be caused in winter· A place where vapor condensation may be generated on piping
due to an increase in dry bulb temperature inside the ceiling caused by the entry of fresh outdoor air
· Drain piping portions
3) Water treatment and water quality control For the circulation water cooling tower of the CITY MULTI WY
system, employment of the closed type is recommended to keep water quality. However, in the case that an open type cooling tower is employed or the circulating water quality is inferior, scale will adhere onto the water heat exchanger leading to the decreased heat exchange capacity or the corrosion of the heat exchanger. Be sufficiently careful for water quality control and water treatment at the installation of the circulation water system.
· Removal of impurities inside piping Be careful not to allow impurities such as welding fragment, remaining sealing material and rust from mixing into the piping during installation work.
· Water treatment The water quality standards have been established by the industry
(Japan Refrigeration, Air Conditioning Industry Association, in case of Japan) for water treatment to be applied.
In order to keep the water quality within such standards, you are kindly requested to conduct bleeding-off by overflow and periodi-cal water quality tests, and use inhibitors to suppress condensa-tion or corrosion. Since piping may be corroded by some kinds of inhibitor, consult an appropriate water treatment expert for proper water treatment.
pH (25˚C[77˚F])Electric conductivity (mS/m) (25˚C[77˚F])
(µS/cm) (25˚C[77˚F])Chloride ion (mg Cl-/ )Sulfate ion (mg SO4 2-/ )Acid consumption (pH4.8)
(mg CaCO3/ )Total hardness (mg CaCO3/ )Calcium hardness (mg CaCO3/ )Ionic silica (mg SiO2/ )Iron (mg Fe/ )Copper (mg Cu/ )
Sulfide ion (mg S2-/ )
Ammonium ion (mg NH4+/ )
Residual chlorine (mg Cl/ )Free carbon dioxide (mg CO2/ )Ryzner stability index
Standarditems
Refer-enceitems
Items
Lower mid-rangetemperature water system
7.0 ~ 8.030 or less
[300 or less]50 or less50 or less
50 or less
70 or less50 or less30 or less1.0 or less1.0 or lessnot to bedetected
0.3 or less0.25 or less0.4 or less
-
7.0 ~ 8.030 or less
[300 or less]50 or less50 or less
50 or less
70 or less50 or less30 or less0.3 or less0.1 or lessnot to bedetected
0.1 or less0.3 or less4.0 or less
-
TendencyRecirculating
water
[68<T<140˚F][20<T<60˚C]
Make-upwater
Corrosive Scale-forming
Reference : Guideline of Water Quality for Refrigeration and Air ConditioningEquipment. (JRA GL02E-1994)
Main circulatingwater pipe
Shutoff valve
Y-type strainer
Shutoffvalve
Refrigerant pipes
Drain pipe
Water outlet (lower)
Water inlet (upper)
50
4.Control Wiring
Restrictions when the PFD-type indoor units are connected (related to the system)
(1) Specifications of control wiring and maximum length of wiring
Transmission line is a type of control line. When the source of noise is located adjacent to the unit, theuse of shield cable as well as moving the unit as far away from the noise source are recommended.
1 Transmission line (M-NET transmission line)
For multiple-refrigerant system
Length of transmission line
Facility type(noise level measurement)
No. of cable 2-core cable
Diameter Over 1.25mm2
Wiring specifications
All types of facilities
n/a
Shield cableCVVS · CPEVS · MVVS
System component
Maximum length: 200mMaximum length of centralized control transmission line and Indoor/Outdoortransmission line via indoor/outdoor units: 500m maximum
Total length of indoor/outdoor transmission line
Cable type
(1) The PFD-type indoor units cannot be connected to the ME remote controller.(2) The address settings must be made on this system.(3) The following functions cannot be selected on the PFD-type indoor units.
1) Switching between automatic power recovery Enabled/Disabled (Fixed to "Enabled" in thePFD-type indoor units)
2) Switching between power source start/stop (Fixed to "Disabled" in the PFD-type indoor units)(4) The PFD-type indoor units and other types of indoor units cannot be grouped.(5) The following functions are limited when the system controller (such as G-50A) is connected.
1) To perform group operation in the system with two refrigerant circuits (combination of two out-door units and one indoor unit: P500 model only), the addresses of the controller boards No.1and No.2 on a indoor unit must be set within a group.
2) The local operation cannot be prohibited with the system controller.3) When the switches of the PFD-type indoor units are set as follows, the unit ON/OFF operation
cannot be made with the system controller.· When the Normal/Local switching switch is set to "Local"· When the DipSW1-10 on the control circuit board is set to "ON"
4) The PFD type indoor units cannot be grouped with other types of indoor units.
51
(1) Address setting
5.Types of switch settings and setting methodsWhether a particular system requires switch settings depends on its components. Refer to the section “7-4 Sample System Connection” before conducting electrical work.Keep the power turned off while setting the switches. If settings are changed while being powered, thechanged settings will not register, and the unit may malfunction.
Symbol
Outdoor unit OC
Indoor unit
✻ 10HP has only the main controller
Main/sub controllers ✻ IC
Turn off the power to
Outdoor unit
Indoor and outdoor units
Unit
2 Remote control wiring
MA remote controller ✻ 1
No. of cable 2-core cable
Diameter0.3~1.25mm2
(0.75~1.25mm2)✻ 2✻ 3
Wiring specifications
VCTF · VCTFK · CVV · CVS · VVR · VVF · VCT
Maximum length: 200 mTotal Length
✻ 1: “MA remote controller” includes MA remote controller, Simple MA controller, and wireless remote controller.✻ 2: Cables with a diameter of 0.75mm2 or smaller recommended for easier handling.✻ 3: When connecting to Simple MA controller terminal, use a cable with a diameter within the range shown in
the parenthesis.
Cable type
The need for address settings and the range of address setting depend on the configuration of the sys-tem. Refer to “Sample System Connection”.
SymbolUnit or controller
Main · SubIndoor unit
MA remote controller
Addresssetting range
IC01~50
(Note 1)
Address setting methodFactory setting
No address setting required.
00
00
MA
Outdoor unitHeat source unit
OCOS
Main
51~100(Note 2)
Model
In case of 10HP system or 20HP system with one refrigerant circuit, assign an odd number starting with "01". In case of 20HP system with two refrigerant circuits, assign a sequential odd number starting with "01" to the upper indoor controller, and assign "the address of the upper indoor controller + 1" to the lower indoor controller.(For the system with one refrigerant circuit, the lower circuit board is not used.)
In the system that consists of single refrigerant circuit, as-sign an address that equals the lowest indoor unit (main) ad-dress in the same refrigerant circuit plus 50. Assign sequen-tial addresses to the outdoor units in the same refrigerant circuit. Set the OC address to odd number address and OS address to even number address on the computer room out-door unit. In the system that consists of two refrigerant cir-cuits, assign an address that equals the connected indoor unit control board address plus 50.
(The main/sub switch must be configured if two remote controllers are connected to the system or if the indoor units are connected to different outdoor units.)
(Note1) If a given address overlaps any of the addresses that are assigned to other outdoor units, use a different, unused address within the setting range.
(Note2) To set the address of an outdoor unit to "100" , set it as 50.
52
(5) Connection of two refrigerant circuits
When two refrigerant circuits are connected on site, make the switch settings on the controller circuitboard following the instructions described in the installation manual for the indoor unit.
(4) Setting the MA “Sub” controller
When using two remote controllers or running two indoor units as a group, one of the controllers must beset to “Sub” controller.✻ No more than two remote controllers can be connected to a group.
(Factory setting: “Main”)Set the controller according to the following procedure. Refer also to the instructions manual supplied withthe MA remote controller.
Remote controller bodyDip switches
1
ON
2 3 4
Screwdriver
Remove the cover on the remote controller
Set Dip Switch No.1 on the remotecontroller to “OFF” (Main to Sub)
Insert a flat-head screwdriver in the groove shown in the picture, and move the screwdriver in the direction shown in the arrow.
(3) Choosing the temperature detection spot by indoor unit (Factory Setting: SWC “Standard”)
When using the suction temperature sensor, set SWC to “Option.”(The discharge temperature sensor is supplied as standard specification.)
(2) Power supply switch connector connection on the outdoor unit (Factory setting: The male power supply switch connector is connected to CN41.)
Systemconfiguration
Power supply switch connector connection
Not connectedNot grouped
Grouped
Required
Grouped/Not grouped
Grouped/Not grouped
Grouped/Not grouped
Not required
Leave the male connector on CN41 as it is. (Factory setting)
Leave the male connector on CN41 as it is. (Factory setting)
System in which indoor units connected to one
outdoor unit
Connection to the system controller
With connection to indoor-outdoor transmission line
With connection to transmission
line for centralized control
Power supply unit for transmission
lines
Not required (Powered from
the outdoor unit)
Grouping the indoor units connected to different outdoor
units
System in which indoor units connected to
multiple outdoor unitsDisconnect the male connector from the female power supply switch connector (CN41) and connect it to the female power supply switch connector (CN40) on only one of the outdoor units (OC).*Connect the S (shielded) terminal on the terminal
block (TB7) on the outdoor unit whose male connector on CN41 was disconnected and connected to CN40 to the earth terminal ( ) on the control box.
✻ When the system controller is connected to the indoor/outdoor transmission line and the power is supplied from the outdoor unit, do not to turn off the outdoor unit. If its power supply is cut, the power is not supplied to the system controller, and the functions will not work.
✻ In the system that consists of two refrigerant circuits, move the power jumper from (CN41) to(CN40) on only one of the outdoor units even when the system controller is not connected.
53
6.Sample System Connection(1) System with MA remote controller
Control Wiring Diagram
Notes Maximum Allowable Length
Wiring and Address Setting
OC
TB3TB7M1 M2 M1 M2S
51
IC
TB5-1A1 B1 S
01
TB5-2A2 B2 S
02
A B
TB151 2
MA
L1L2
Leave the male connector on CN41 as it is.
Leave the male connector on CN41 as it is. OS
TB3TB7M1 M2 M1 M2S
52
1. Leave the male connector on the female power supply switch connector (CN41) as it is.2. Grounding to S terminal on the terminal block for transmission line for centralized
control (TB7) is not required.3. Although two indoor controllers (controller circuit boards) are equipped inside the
indoor unit (20HP), the board on No.2 side (lower side) is not used. Do not connect wiring to the lower controller circuit board.
4. The outdoor unit cannot be connected to the units other than the PFD series indoor units.
<a. Indoor/Outdoor transmission line>Connect M1, M2 terminals of the indoor/outdoor transmission line terminal block (TB3) on the outdoor unit (OC) and A1, B1 terminals of the indoor/outdoor terminal block (TB5-1) on the indoor unit (IC). (Non-polarized 2-core cable) *Only use shielded cables.[Shielded cable connection]Connect the earth terminal of the OC and S terminal of the IC terminal block (TB5-1).
<b. Switch setting>Address setting is required as follows.
Main Controller
Sub Controller Settings to be made with the sub/main switch
IC
IC
OC
OS
1
2
Notes
3MA
MA
51~99
52~100
01~50
01~50
00
00
Setting not required.
Sub Controller
✻ One indoor controller (controller circuit board) is equipped in the indoor unit (10HP), and two indoor controllers (controller circuit boards) are equipped in the indoor unit (20HP).
<a. Indoor/Outdoor transmission line>Maximum Length (1.25mm2 or more)
L1 + L2 200m
Ste
ps Unit or controller
Main
Sub
Indoorunit
MAremotecontroller
Addresssetting range
Address setting method
Outdoor unit
Factorysetting
Main
Assign a sequential odd number starting with "01" to the upper indoor controller.
Add 50 to the address assigned to the indoor unit connected to the same refrigerant circuit.
Set consecutive numbers for the addresses of outdoor units in the same refrigerant circuit system.
To set the address to 100, set the rotary switches to 50.
To set the address to 100, set the rotary switches to 50.
Assign sequential numbers starting with the address of the main unit in the same group. (Main unit address +1)
1 System connected to one outdoor unit
54
Control Wiring Diagram
Notes Maximum Allowable Length
Wiring and Address Setting
Leave the male connector on CN41 as it is.
1. Assign a sequential number to the outdoor unit.2. Do not connect the terminal blocks (TB5) of the indoor units connected to different
outdoor units.3. Disconnect the male connector on the controller board from the female power supply
switch connector (CN41), and connect it to the female power supply switch connector (CN40) on only one of the outdoor units.
4. Provide grounding to S terminal on the terminal block for transmission line for centralized control (TB7) on only one of the outdoor units.
5. When the power supply unit is connected to the transmission line for centralized control, leave the male connector on the female power supply switch connector (CN41) as it is at factory shipment.
6. The outdoor unit cannot be connected to the units other than the PFD series indoor units.
<a. Indoor/Outdoor transmission line>Connect M1, M2 terminals of the indoor/outdoor transmission line terminal block (TB3) on the outdoor unit (OC) and A1, B1 terminals of the indoor/outdoor terminal block (TB5-1) on the indoor unit (IC). (Non-polarized 2-core cable) *Only use shielded cables.[Shielded cable connection] Connect the earth terminal of the OC and S terminal of the IC terminal block (TB5-1).
<b. Transmission line for centralized control> Daisy-chain terminals M1 and M2 on the terminal block for transmission line for centralized control (TB7) on each outdoor unit (OC).Disconnect the male connector on the controller board from the female power supply switch connector (CN41), and connect it to the female power supply switch connector (CN40) on only one of the outdoor units. *Only use shielded cables.[Shielded cable connection] To ground the shielded cable, daisy-chain the S-terminals on the terminal block (TB7) on each of the outdoor
units. Connect the S (shielded) terminal on the terminal block (TB7) on the outdoor unit whose male connector on CN41 was disconnected and connected to CN40 to the earth terminal ( ) on the electric box.
<c. Switch setting>Address setting is required as follows.
Main Controller
Sub Controller Settings to be made with the sub/main switch
IC
IC
OC
1
2
Notes
3MA
MA
51~100
01~50
01~50
00
00
Setting not required.
Sub Controller
✻ One indoor controller (controller circuit board) is equipped in the indoor unit (10HP), and two indoor controllers (controller circuit boards) are equipped in the indoor unit (20HP).
<a. Indoor/Outdoor transmission line>Maximum Length (1.25mm2 or more)
L1, L2 200m<b. Transmission line for centralized control>
Maximum Length via outdoor unit (1.25mm2 or more)L1 + L31 + L2 500m
Ste
ps Unit or controller
Main
Sub
Indoorunit
MAremotecontroller
Addresssetting range
Address setting method
Outdoor unit
Factorysetting
Main
Assign a sequential odd number starting with "01" to the upper indoor controller.
Add 50 to the address assigned to the indoor unit connected to the system with one outdoor unit.
Assign sequential numbers starting with the address of the main unit in the same group. (Main unit address +1)
OC
TB3TB7M1 M2M1M2 S
51
IC
TB5-1A1 B1 S
01
TB5-2A2B2 S
02
OC
TB3TB7M1M2M1M2 S
52
A B
TB151 2
MA
L31
L1
L2
Connection
Disconnect the male power supply connector from CN40 and connect it to CN41.
To set the address to 100, set the rotary switches to 50.
not connect
(1) System with MA remote controller2 System connected to two outdoor units
55
(1) System with MA remote controller
Control Wiring Diagram
Notes Maximum Allowable Length
Wiring and Address Setting
Leave the male connector on CN41 as it is. OC
TB3TB7M1 M2M1 M2 S
51
IC
TB5-1A1 B1 S
01
TB5-2A2 B2 S
02
A B
TB151 2
MA(Main)
A B
MA(Sub)
L1
A1 B2
MA
m1m2
1. Leave the male connector on the female power supply switch connector (CN41) as it is.2. Grounding to S terminal on the terminal block for transmission line for centralized
control (TB7) is not required.3. Although two indoor controllers (controller circuit boards) are equipped inside the
indoor unit, the board on No.2 side (lower side) is not used. Do not connect wiring to the lower controller circuit board.
4. No more than two MA remote controllers (including both main and sub controllers) can be connected to a group of indoor units. If three or more MA remote controllers are connected, remove the wire for the MA remote controller from the terminal block (TB15).
5. The outdoor unit cannot be connected to the units other than the PFD series indoor units.
<a. Indoor/Outdoor transmission line>Same as (1) 1.
<b. MA remote controller wiring>[When two remote controllers are connected to the system]When two remote controllers are connected to the system, connect terminals 1 and 2 of the terminal block (TB15) on the indoor unit (IC) to the terminal block on the MA remote controllers (option).*Set the Main/Sub switch on the connected MA remote controllers (option) to SUB.(See the installation manual for the MA remote controller for the setting method.)
<c. Switch setting>Address setting is required as follows.
Main Controller
Sub Controller Settings to be made with the sub/main switch
IC
IC
OC
1
2
Notes
3MA
MA
51~100
01~50
01~50
00
00
Setting not required.
Sub Controller
✻ One indoor controller (controller circuit board) is equipped in the indoor unit (10HP), and two indoor controllers (controller circuit boards) are equipped in the indoor unit (20HP).
<a. Indoor/Outdoor transmission line>Same as (1) 1.
<b. MA remote controller wiring>Maximum overall length (0.3-1.25mm2 or more)
m1 + m2 200m
Ste
ps Unit or controller
Main
Sub
Indoorunit
MAremotecontroller
Addresssetting range
Address setting method
Outdoor unit
Factorysetting
Main
Assign a sequential odd number starting with "01" to the upper indoor controller.
Add 50 to the address assigned to the indoor unit connected to the system with one outdoor unit.
Assign sequential numbers starting with the address of the main unit in the same group. (Main unit address +1)
To set the address to 100, set the rotary switches to 50.
3 System in which two MA remote controllers are connected to one indoor unit
56
Control Wiring Diagram
Notes Maximum Allowable Length
Wiring and Address Setting
1. Leave the male connector on the female power supply switch connector (CN41) as it is.2. Grounding to S terminal on the terminal block for transmission line for centralized
control (TB7) is not required.3. Although two indoor controllers (controller circuit boards) are equipped inside the
indoor unit, the board on No.2 side (lower side) is not used. Do not connect wiring to the lower controller circuit board.
4. No more than two MA remote controllers (including both main and sub controllers) can be connected to a group of indoor units. If three or more MA remote controllers are connected, remove the wire for the MA remote controller from the terminal block (TB15).
5. The outdoor unit cannot be connected to the units other than the PFD series indoor units.
<a. Indoor/Outdoor transmission line>Same as (1) 1.
<b. MA remote controller wiring>[Group operation of indoor units]To perform a group operation of indoor units (IC), daisy-chain terminals 1 and 2 on the terminal block (TB15) on all indoor units (IC). (Non-polarized 2-core cable)*Set the Main/Sub switch on one of the MA remote controllers to SUB.
<c. Switch setting>Address setting is required as follows.
Main Controller
Sub Controller Settings to be made with the sub/main switch
IC
IC
OC
1
2
Notes
3MA
MA
51~100
01~50
01~50
00
00
Setting not required.
Sub Controller
✻ One indoor controller (controller circuit board) is equipped in the indoor unit (10HP), and two indoor controllers (controller circuit boards) are equipped in the indoor unit (20HP).
Ste
ps Unit or controller
Main
Sub
Indoorunit
MAremotecontroller
Addresssetting range
Address setting method
Outdoor unit
Factorysetting
Main
Assign a sequential odd number starting with "01" to the upper indoor controller.
Add 50 to the address assigned to the indoor unit connected to the system with one outdoor unit.
Assign sequential numbers starting with the address of the main unit in the same group. (Main unit address +1)
OC
TB3TB7M1M2M1M2 S
51
IC
TB5-1A1 B1 S
01
TB5-2A2 B2 S
02
A B
TB151 2
MA(Main) MA(Sub)
L1Leave the male connector on CN41 as it is. OC
TB3TB7M1M2M1 M2 S
53
IC
TB5-1A1B1 S
03
TB5-2A2 B2 S
04
A B
TB151 2
L1Leave the male connector on CN41 as it is.
m1 m2
m3
<a. Indoor/Outdoor transmission line>Same as (1) 1.
<b. MA remote controller wiring>Maximum overall length (0.3-1.25mm2 or more)
m1 + m2 + m3 200m
To set the address to 100, set the rotary switches to 50.
(1) System with MA remote controller4 System in which two indoor units are grouped with the MA remote controller
57
(2) System with MA remote controller and AG-150A
Control Wiring Diagram
Notes Maximum Allowable Length
Wiring and Address Setting
1. Be sure to use odd numbers to set the address for indoor units (10 HP and 20HP connected to the one outdoor unit).
2. To set the indoor unit address for 20 HP connected to two outdoor units, use odd numbers for the top controllers and use even numbers for the bottom controllers (Main controller plus 1).
3. Use the power supply switch connector (CN41) on the outdoor unit as is.4. It is not necessary to ground the S terminal of transmission line terminal board for
centralized controller on the outdoor unit.5 No more than two main/sub remote controllers can be connected to the indoor unit in
the same group. When more than two remote controllers are present in the system, disconnect MA remote controller from TB15 in the indoor unit.
6. Put both types of the addresses for P500-type indoor units in the same group when setting groups for indoor units with system controller (ex. AG-150A).
<a. Indoor/Outdoor transmission line>Same as (1) 1.
<b. Transmission line for centralized control> Daisy-chain terminals M1 and M2 on the terminal block for transmission line for centralized control (TB7) on each outdoor unit (OC).*Only use shielded cables.[Shielded cable connection]To ground the shielded cable, daisy-chain the S-terminals on the terminal block (TB7) on each of the outdoor units.
<c. Switch setting>Address setting is required as follows.
<a. Indoor/Outdoor transmission line>L1, L2, L3 200m
<b. Transmission Line for Centralized Control >L31 + L32 + L33 + L34 + L3 500mL1 + L31 + L34 + L3 500m
<c. MA Remote Controller Line >Total Length (0.3 ~ 1.25mm2)
m1 200m
Main Controller
Sub Controller Settings to be made with the sub/main switch
IC
IC
OC
1
2
Notes
3MA
MA
51~100
02~50
01~50
00
00
Setting not required.
Sub Controller
Ste
ps Unit or controller
Main (10HP, 20HP)
Sub(20HP)
Indoorunit
MAremotecontroller
Addresssetting range
Address setting method
Outdoor unit
Factorysetting
Main
Assign a sequential odd number starting with "01" to the upper indoor controller.
Add 50 to the address assigned to the indoor unit connected to the system with one outdoor unit.
Assign sequential numbers starting with the address of the main unit in the same group. (Main unit address +1)
MA
TB151 2
A B
OC
TB3TB7M1M1M2S
53
IC
MA
TB5-1A1 B1 S
03
TB5-2A2 B2 S
TB151 2
A B
04
OC
TB3TB7M1M2M1M2 S
54
OC
TB3TB7M1M2 M2M1M2S
51
IC
TB5-1A1 B1S
01
L1Use CN41 as is.
PowerSupply
A B S
AG-150A
A B S
L32
L33
Option
DC power supply line(DC24V)
L34
m1
L2
L3
m1
Use CN41 as is.
Use CN41 as is.
✻There is one indoor controller board inside indoor unit.
✻There are two indoor controller boards inside indoor unit.
L31
not connect
not connect
1 System with multiple indoor units (10HP, 20HP)
58
7.External input/output specifications(1) Input/output specifications
Function Usage Signals
Function Usage Signal
Input
Start/stop Turning ON/OFF the indoor unit
· Pulse [Factory setting: Dip SW1-9 ON](a-contact with voltage/without voltage) ✻1
<With voltage> Power Source: DC12~24V Electrical Current: Approximately 10mA (DC12V)
<Standard Pulse>
Sending a command to perform dehumidifi-cation with priority
LevelRefer to the wiring diagram <Dehumidification command> shown on the page60.
· Level [Dip SW1-9 OFF]
Output
No.1OperationStatus
Obtaining signals indicating operation status of indoor units in each refrigerant circuit.
Relay a-contact output DC 30V or AC 220~240V
Standard Current : 1AMinimum Current : 1mA
No. 1Error Status
Obtaining signals indicating error status of indoor units in each refrigerant circuit.
No. 2OperationStatus
Obtaining signals indicating operation status of indoor units in each refrigerant circuit.
No. 2Error Status
✻
✻
✻ 20HP only
Obtaining signals indicating error status of indoor units in each refrigerant circuit.
over 200ms(Pulse powering time)
over 200ms(Pulse interval)
✻1 Use minute-current contact (DC12V 1mA)
Dehumidi-fication signal
Short: operateOpen: stop
59
(2) Wiring
External input/output board
Power Source for Display
No.1 Operation Status
No.1 Error Status
✻ No.2 Operation Status
✻ 20HP only
✻ No.2 Error Status
Common
Stop/Start
Input with voltage
Input without voltage
Relay Contact Point Output
Stop/Start
External power source
Connection to terminal board Connection with connectors
(✻1) For instructions on how to install the short-circuit plate, refer to "Caution on using the external input function" shown on the next page. Wiring distance 100 m or less.
SW12
L1
L2
L3
L4
(*1) Short circuit plate
(*1) Short circuit plate
SW11
CN53
1
2
3
4
5
1
2
3
4
5
TB21
TB22
TB23
XA
XB
XC
XE
XD
XE
XD
XC
XB
XA
COM
1
2
BC
B1
B2
AC
A1
A2
3
4
5
CN54
<Input with Applied Voltage>DC12~24VElectrical current input (per contact)Approximately 10mA (DC12V)
SW12Remote start/stop switchEach pressing of the SW (Pulse input) switches between ON and OFF.
Remote start/stop✻ Each pressing of the SW (Pulse input) switches
between ON and OFF.
External powersource
<Input without voltage applied>
Contact: Minimum applicable load DC12V 1mAContact rating DC12V 0.1A and over
SW11
<Relay contact output>DC30V or less 1AAC220-240V 1A
No.1 Operation Status Indicator LampL1
No.1 Error Status Indicator LampL2
Power supplyfor displays
No.2 Operation Status Indicator LampL3
No.2 Error Status Indicator LampL4
Relay(Permissible Electrical Current: 10mA~1A)
XA~XE
� Setting on the Indoor UnitConfirm the following setting when using external input.1 No.1, No.2 Controller board Dip SW 3-8: ON (Factory Setting: ON; External input will not be available when OFF.)2 No.1, No.2 address board Dip SW 1-10: OFF (Factory Setting: OFF; External input will not be available when ON.)3 Normal/Local switch inside the unit controller box is set to “Normal.” (Factory Setting: Normal; External input will not be
available when it is set to “Local.”)
60
� Caution on using the external input function (20HP only)
54321COMB2B1BCA2A1AC
TB23 TB21 TB22
CN53 CN54
External input-output board
Short-circuit plate
External input-output board
54321COMB2B1BCA2A1AC
TB23 TB21 TB22
CN53 CN54
Short-circuit plate
External input
<The case of with-voltage input>
· Connecting the short-circuit plate
<The case of no-voltage input>
External input
When using the external input function on the indoor unit that is connected to a two-refrigerant circuit, connect the short-circuit plate that is supplied with the unit to the appropriate terminals on the external input-output board.Without the short-circuit plate, the unit will not function properly.Don’t connect the short-circuit plate in case of a one-refrigerant circuit.
Caution
1 Brown
SW: Dehumidification command Z : Relay
Contact: Minimum applicable load DC12V 1mAContact rating DC12V 0.1A and over
Relay power supply
Indoor unitcontroller circuit board
Adapter forremote display(PAC-SA88HA) Relay circuit Remote controller board
Z SW
CN52
5 Green
Z
<Dehumidification command>
61
(3) Wiring Method
1 Check the indoor unit setting (Refer to 7-5.(2) Wiring )2 When using the external output function, connect each signal line to External output Terminal (TB22)
on the unit, depending on the usage.3 When using external input function, peal the outer layer of the signal line off, and connect it to external
input terminal (TB21 or TB23) on the unit, depending on the usage.
54
32
1CO
MB2
B1BC
A2A1
AC
TB23TB21
TB22
CN
53C
N54
✻1
✻1
Fix the wire on the high-voltage (AC220-240V) clamp. Pull the wire through the hole for transmission line to outside the unit. ✻3
Fix the wire on the low-voltage (below DC30V) clamp. Pull the wire through the hole for transmission line to outside the unit. ✻2
To CN51 of No.1 board
To CN51 of No.2 board
Wiring inside the unit
Wiring On Site
✻1 For instructions on how to install the short circuit plate on the 20HP indoor unit, refer to "Caution on using theexternal input function" shown on the previous page.
✻2 Do not bundle with high-voltage (AC220-240V) wire, since noise interference from such wire may cause theunit to malfunction.
✻3 Do not bundle with minute-voltage (DC30V or below) wire, since noise interference from such wire may causethe unit to malfunction.
Caution1) Wiring should be covered by insulation tube with supplementary insulation.2) Use relays or switches with IEC or equivalent standard.3) The electric strength between accessible parts and control circuit should have 2750V or more.4) TB21 is a terminal specifically for No-voltage contact point input. Do not apply voltage to TB21, since it
must result in malfunction of indoor unit controller board.5) TB23 is specifically for contact point input with voltage. Check the polarity before connecting to avoid
damage to the unit.6) Keep the wires on the input side and on the output side away from each other when using AC220-
240V as a power source for displays.7) Keep the length of the extension part of external signal line under 100m.8) 20HP is shipped with B1 and B2 terminals of TB21 and A1 and A2 terminals of TB23 short-circuited
respectively. Do not eliminate this feature. If it is eliminated, the units in one of the two refrigerant circuits may not operate.
62
(4) Switch setting
� The suction/discharge temperature control of the indoor unit.
Either suction temperature control or discharge temperature control can be selected .The suction/discharge temperature control can be switched by the switches (SWC) on the controller circuitboard inside the controller of the indoor unit. The discharge temperature control is selected at factory shipment. (SWC is set to “Standard.”) To switch the control, set SWC on two controller circuit boards inside the controller as follows.
To perform suction temperature control: Set SWC to “Option (OP)” To perform discharge temperature control: Set SWC to “Standard”
The setting for the SWC on the two controller circuit boards must be the same (applicable only when con-necting to a two-refrigerant circuit). *Only the suction temperature control is performed in the heating mode regardless of the SWC setting.
(5) Dehumidification priority control
This unit can be operated in the dehumidification priority control by receiving external signals (CN52 onindoor unit). The unit goes into the dehumidification priority control when dehumidification signal is received for 10 con-tinuous minutes during cooling operation. The unit resumes normal operation when the signal goes off orwhen the suction temperature reaches 13˚C or below. When the unit is in this control, the unit is operated at the maximum capacity regardless of the actual set-ting, so the room temperature may reach below the preset temperature. If this is a problem, install a circuit that turns off the dehumidification signal based on the room temperature. The model of units described in this manual does not support the reheat function, so it does not allow boththe temperature and humidity to be controlled simultaneously.
(6) Normal/Local switching switch (SW9)
When selecting the “Local” mode using the Normal/Local switching switch beside the MA remote controlleron indoor unit, the local operation is enabled, and the remote ON/OFF operation (external input or systemcontroller) is disabled.If no external input is available, the local operation is enabled in both “Nomal” and “Local” modes.The occurred error is not reported to the upper system, such as building management system including sys-tem controller. (If an error occurs during inspection, the occurred error is reported only to the units, and theerror history remains on the units.)
63
Only use optional parts recommended by Mitsubishi Electric. These parts should only be installed by a qualified technician. Improper installation may result in water leakage, electric shock, or fire.
WARNING
9.Notes on the use of optional accessories
8.System Rotation Control
Applicable UnitsIndoor units: PFD-P250, 500VM-EOutdoor unit: PUHY-P250YHM-A(-BS), PUHY-P500YHM-A(-BS)Heat source unit: PQHY-P250YHM-A
CAUTION To enable this control function, the following wiring and settings are required at installation.1) Daisy-chain terminals M1 and M2 on the terminal block for transmission line for
centralized control (TB7) on all applicable outdoor units.Move the power jumper connected to CN41 to CN40 on only one of the outdoor units.To supply power to the outdoor unit from a power supply unit, leave the power jumperconnected to CN41as it is (factory setting).
2) Check that the label on the indoor unit circuit board reads KE90D352, if it does not,replace the circuit board.
3) Set the SW1-9 and SW1-10 on indoor units as follows to enable the external input:(SW1-9: ON; SW1-10: OFF).
4) Assign sequential addresses to the units as shown below (Figure 1).(Only use odd numbers for the 10HP system.)
5) Make the rotation group settings by setting the appropriate switches on the outdoor units.
1. General Descriptions• Each group can consist of a maximum of 5 systems and a minimum of 2 systems.•With the use of this control function, one system in a given group serves as a backup andremains stopped.
•The unit designated as the control unit (System 1 in Figure 1) sends command signals to otherunits in the group to start or stop, and rotates the backup unit every 480 hours.
•Rotation sequence is in the ascending order of address, starting from the lowest address afterthe control unit address.(e.g., System 2→System 3→System 4→System 5→System 1 in Figure 1 below)
•If other units in the group detect an error or if there is a communication failure between thesystems, this control is terminated, and the backup unit goes into operation.
OC51
IC01
MA
Figure 1 Sample 20HP system group
OC52
IC02
OC53
IC03
MA
System 2
Backup unit
OC54
IC04
OC55
IC05
MA
System 3
OC56
IC06
OC57
IC07
MA
System 4
OC58
IC08
OC59
IC09
MA
System 5
OC60
IC10
System 1(Control unit)
TB7
TB3TB5
TB15
TB7
TB3TB5
TB15
64
10. Caution for refrigerant leakage
(1) Refrigerant property
The installer and/or air conditioning system specialist shall secure safety against refrigerant leakage according to local regulations or standards.The following standard may be applicable if no local regulation or standard is available.
R410A refrigerant is harmless and incombustible. The R410A is heavier than the indoor air in density. Leakage of the refrigerant in a room has possibility to lead to a hypoxia situation. Therefore, the Critial concentration specified below shall not be exceeded even if the leakagehappens.
Critical concentrationCritical concentration hereby is the refrigerant concentration in which no human body would be hurt if immediate measures can be takenwhen refrigerant leakage happens.
Critical concentration of R410A: 0.30kg/m3
(The weight of refrigeration gas per 1 m3 air conditioning space.);The Critical concentration is subject to ISO5149, EN378-1.
For the PFD system, the concentration of refrigerant leaked should not have a chance to exceed the Critical concentration in any situntion.
The maximum refrigerant leakage concentration (Rmax) is defined as the result of the possible maximum refrigerant weight (Wmax)leaked into a room divided by its room capacity (V). It is referable to Fig. 8-1. The refrigerant of Outdoor unit here includes its originalcharge and additional charge at the site.The additional charge is calculated according to 3-3. "Refrigerant charging calculation", and shall not be over chargedat the site. Procedure 8-(2)-1~3 tells how to confirm maximum refrigerant leakage concentration (Rmax) and how to take countermeasures
Refrigerant pipe
to Outdoor unit
Indoor unit
Opening
Fresh air supply fan (always ON)
Indoor space
(Floor)
Fig.8-2. Fresh air supply always ON
Refrigerant pipe
to Outdoor unit
Indoor unit
Opening
Sensor for refrigerant leakage (Oxygen sensor or refrigerant sensor).[At 0.3m height from the floor]
Fresh air supply fan
Indoor space
(Floor)
Fig.8-3. Fresh air supply upon sensor action
Refrigerant pipe (high pressure pipe)
Refrigerant stop valve
to Outdoor unit
Indoor unit
Opening
Sensor for refrigerant leakage (Oxygen sensor or refrigerant sensor).[At 0.3m height from the floor]
Fresh air supply fan
Indoor space
(Floor)
Fig.8-4. Fresh air supply and refrigerantshut-off upon sensor action
Note 1. Countermeasure 3 should be done in a proper way in which the fresh air supply shall be on whenever the leakage happens.Note 2. In principle, MITSUBISHI ELECTRIC requires proper piping design, installation and air-tight testing after installation to avoid leakage happening.
In the area should earthquake happen, anti-vibration measures should be fully considered.The piping should consider the extension due to the temperature variation.
Maximum refrigerant leakage concentration (Rmax) Rmax=Wmax / V (kg/m3)
Maximum refrigerant leakage concentration (Rmax) Rmax=Wmax / V (kg/m3)where, Wmax=W1+W2
W1: Refrigerant weight of Outdoor unit No.1W2: Refrigerant weight of Outdoor unit No.2
Fig. 8-1 The maximum refrigerant leakage concentration8-(2)-1.Find the room capacity (V),
If a room having total opening area more than 0.15% of the floor area at a low position with another room/space, the two rooms/space are considered as one. The total space shall be added up.
8-(2)-2.Find the possible maximum leakage (Wmax) in the room. If a room has Indoor unit(s) from more than 1 Outdoor unit, add up therefrigerant of the Outdoor units.
8-(2)-3.Divide (Wmax) by (V) to get the maximum refrigerant leakage concentration (Rmax).8-(2)-4.Find if there is any room in which the maximum refrigerant leakage concentration (Rmax) is over 0.30kg/m3.
If no, then the PFD is safe against refrigerant leakage.If yes, following countermeasure is recommended to do at site.Countermeasure 1: Let-out (making V bigger)
Design an opening of more than 0.15% of the floor area at a low position of the wall to let out the refrigerant whenever leaked.e.g. make the upper and lower seams of door big enough.
Countermeasure 2: Smaller total charge (making Wmax smaller) e.g. Avoid connecting more than 1 Outdoor unit to one room.e.g. Using smaller model size but more Outdoor units.e.g. Shorten the refrigerant piping as much as possible.
Countermeasure 3: Fresh air in from the ceiling (Ventilation) As the density of the refrigerant is bigger than that of the air. Fresh air supply from the ceiling is better than air exhausting from the
Fresh air supply solution refceiling. ers to Fig. 8-2~4.
against a possible leakage.
(2) Confirm the Critical concentration and take countermeasure
Outdoor unit (No.1)
Flow of refrigerant
Indoor unit
Indoor unit
Outdoor unit (No.1)
Flow of refrigerant
Outdoor unit (No.2)
Flow of refrigerant
65
V. Air Conditioning the Computer Room1.Main Features of the Floor-Duct Air Conditioners
2.Features of air-conditioner for computer room
Filter
Free-access top floor
Ceiling
Com
pute
r
This system is installed by building a floor over an existing floor and using the space between these two floors as an air-conditioning duct. This system has the following characteristics:
1 The temperature and humidity can efficiently and reliably be controlled, since the air-conditioned air issent directly to the machine.
2 It provides a comfortable environment for the operator, since the air can be conditioned to best suit theneeds of the operator and machines.
3 It is favorable in terms of appearance because the air-conditioning duct is out of sight.
4 The location of the duct is irrelevant when considering adding new machines or rearranging the existingmachines, since the entire floor serves as the air duct.
(1) Unlike plenum ventilation and overhead-duct type conditioners, since the conditioned air is not mixedwith the air in the room, the air that comes out of the unit has to meet the predetermined conditions(constant temperature/constant humidity) at the time the air exits the unit.Close attention must be paid to the auto-controlling system.
(2) Dust in the duct space (between the free-access top floor and the existing floor) must be thoroughlyremoved before installing the unit.
(3) Since the existing floor is cooled by the unit, it may produce dews on the ceiling of the room downbelow.
Air-conditioner for computer room is designed to maintain a constant room temperature and humidity. Forunderfloor air supply systems, providing air that meets predetermined requirements is a must. The com-pressor installed in this unit runs year around. The capacity controlled compressor regulates the outlet airtemperature (or inlet air temperature) depending on the load change. The humidifier (Configure to Order)installed in this unit humidifies a room to a target humidity, and regulates the humidity. With priority dehu-midification control (a dehumidifier must be installed on site), a room is dehumidified to a target humidity.Since the reheat function is not equipped, the room temperature may drop below the predetermined tem-perature due to a load inside the room. Therefore, the absolute humidity drops whereas the relativehumidity may not drop to a target humidity.
Caution
66
3.Step-by-Step Plan for the Implementation of the Air-Conditioning
Basic Conditions
Securing Necessary Rooms
Decision to Install the Air-Conditioning System
Selecting the Air-Conditioner Model
Selecting the Controllers
Total System Air-conditioning operation panel (secure individual operation circuit), Auto Controller (temperature and humidity indicator/recorder), management, safety, laws, maintenance, earthquake proof, anti-vibration (floor load, anti-vibration device), noise control, etc.
Calculating the Load
Setting the Conditions for the Room
Temperature/humidity Condition
Purpose Making decisions on the computer system
Accommodates possible future expansion (ensuring the acquisition route)
Operation schedule
Back-up system (in case of breakdowns, power outage, water-supply cut offs etc.)
Air conditioning methods (continuous, floor-duct type etc.)
Computer room, CVCF room, MT Disk Storage room
Supplementary computer room, system surveillance room
Programmer room, operator room
Battery room, transformer room
67
4.Conditions for the Installation of Computer-Room Air Conditioners
Computer
Fan
Air conditioner
Air intake
Free-accessfloor
Air discharge
(1) Outdoor Temperature and Humidity
Generally the values set for general air conditioners are used, although the value higher than the maxi-mum outdoor temperature and humidity may be set for devices like computer-room air conditioners thatmust keep the air temperature and humidity under predetermined levels.
(2) Indoor Temperature and Humidity
There is a wide range of conditions set by different computer manufacturers, and the conditions need tobe set in consultation with the manufacturers. The most basic conditions include keeping dew condensa-tion and static electricity from forming. It is also necessary to keep the room free of dust to ensure asmooth operation of the computer.
(3) Matching the Volume of Air Flow
It is possible to use the fan on the computer to cool the room. This controlling method requires a certainvolume of cold air in proportion to the amount of heat produced by the device. The inlet panel is located atthe bottom of the unit, and the exhaust pipe is located either on the ceiling, front and back, or on the side.
(4) Considering a Back-up Air Conditioning System
When the system is not allowed to stop at all, a back-up system is necessary. There are several different options for a back-up as the following:
1 Installing two sets of air conditioning systems necessary for the computer.2 Utilizing regular office air conditioners (for people)3 Using one of the units as a back-up
1 is used infrequently due to high costs involved. 2 involves many technical problems such as the difference between preset conditions for computer rooms and office rooms. In general, 3 is a preferredmethod. If 3 is chosen, the unit method (package method) is more economical than the central method.
68
5.Setting the Air conditioners
20.9kW
5
20W/m2
60Hz
Computer-generated heat
Number of workers
Lighting
Temperature and humidity
Frequency
Indoor ˚CDB/Indoor WBT : 24˚C/17˚C˚CDB of the air going into the computer : 18˚C
(1) Air-Conditioning Load
(2) Sample Selection of Air Conditioners
(2-1) Conditions
Windows
Inside Measurement
Surroundings
(W: 4.5m, H: 1.5m) ✕ 2
Ceiling height 2.2m
Upstairs room, downstairs room, heat and air conditioning
(2-2) Building Conditions
1 Coefficient of Overall Heat Transmission U (W/m2 ·K)
Summer 3.6, Winter 3.8
2.05
Summer 5.93, Winter 6.5
Floor (free access)
Outer Walls
Inner Walls
Ceiling
Floor
Windows
Downward convection 3.36, upward convection 3.3
Downward convection 3.05, upward convection 4.56
Downward convection 2.42, upward convection 3.3
2 Internal Load
1 Once the floor plan is made and the conditions for the air-conditioning system are set, air conditioningcapacity has to be determined by calculating the load.
2 Unlike the outdoor air, computer load remains constant throughout the year. However, it is possiblethat there are considerable fluctuations within a day. This is due to the fact that, depending on the timeof the day, there are changes in the number of computers that are turned on and that the differentcomputer systems are in operation.
3 If there is a plan to expand the current computer system in the future, it is important to include theload for the units to be added in the future when calculating the thermal load because it is practicallyimpossible to keep the computers off for days on end during the installation of the new units.
4 The following items need to be checked before calculating the unit capacity:· Floor area of the computer room (m2)· Total quantity of heat generated by computers
Number of People in the Room 5 Lighting 20W/m2
Calculator 20.9kWDraft 0.2 times/h
3 Volume of Outdoor Air Intake
25m3/h·person
Window
69
(2-3) Calculating the Load and Selecting a Model
1 Load (in the summer with air-conditioning)
2 Necessary Air Circulation
3 Model Selection
< Sensible Heat > SH
< Latent Heat > LH
Total load is 28.8kW
Computer
Lighting
Number of people in the room
Infiltration draft
Outer wall (heat transmission)
Windows (radiation)
Windows (heat transmission)
Inner wall(heat transmission)
Outside air
1,800W
5 persons ✕ 64 (U)
(0.2 times/h) 39.6m3 ✕ 0.336 ✕ 8
8.5m2 ✕ 3.6 ✕ 8
13.5m2 ✕ 0.65 ✕ 188
13.5 ✕ 5.93 ✕ 8
61.6 ✕ 2.05 ✕ 4
125m3 ✕ 0.336 ✕ 8
20.9 kW
1.8 kW
0.32 kW
0.11 kW
0.25 kW
1.91 kW
0.64 kW
0.5 kW
0.34 kW
26.8 kWTotal
Infiltration draft
Number of people in the room
Outside air
39.6 ✕ 834 ✕ 0.0117
5 persons ✕ 82
125m3 ✕ 834 ✕ 0.0117
0.39 kW
0.41 kW
1.22 kW
2.0 kWTotal
26800
0.336 ✕ (24 -18)V = ÷ 60 = 221m3/min
Calculate the temperature difference by setting the outdoor temperature; then, calculate hourly loads.The chart shows the result of a calculation, supposing that the system reaches its highest load at 12 o'clock.Outdoor temperatures in this example Summer : 32˚CDB relative humidity 60%
Winter : -2˚CDB relative humidity 42%
PUHY-P250YHM-A ✕ 2, PFD-P500VM-E typeIndoor ˚CDB 24˚C / Indoor ˚CWB 17˚C outdoor ˚CDB 32˚CCapacity of the Moment 54.3kW SHF = 0.92Capacity of Sensible Heat 54.3 ✕ 0.92 = 49.9/kWStandard Air-Flow Volume: 320m3/min can be accommodated with PUHY-P250YHM-A ✕ 2 and PFD-P500VM-E.
70
6.Automatic Control of the Computer Room
✻1✻2
< Outdoor Unit >
Free-Access Floor
< Indoor unit >
Suctiontemperaturesensor
Discharge temperature sensor
RA
SA
TB3 TB3
Controller
Terminal Bed forExternal Input/Output
Remote Controller
ExamplePFD-P500VM-E automatically controls the cooling temperature with a built-in controller. (suction temperature or discharge temperature control)This unit is designed for high sensible-heat specifications, and it does not include a humidifier or a dehumidi-fier. Install such components as necessary.
✻1 Bold lines in the diagram indicate refrigerant piping (gas/liquid).This system consists of two refrigerant circuit.
✻2 Indicates TB3-type transmission line used to communicate with the indoor unit.This system is made up of two circuit.
71
VI. Maintenance / Inspection1.Maintenance/Inspection Schedule
Indo
orO
utdo
orH
eat s
ourc
e
Fan Motor 6 months 40000 hours Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
YesYes
Bearing 6 months 40000 hours
Fan Belt 6 months 8000 hours
Air Filter 3 months 5 years Yes
Drain Pan 6 months 8 years
Add lubricant once a year
Disposable parts
Maintenance schedule changes depending on the local conditions
Drain Hose 6 months 8 years
Linear Expansion Valve 1 year 25000 hoursHeat Exchanger 1 year 5 years
Float Switch 6 months 25000 hours
Display Lamp (LED) 1year 25000 hours
Compressor 6 months 40000 hours
Fan motor 6 months 40000 hours
Linear Expansion Valve1 year 25000 hours
Heat Exchanger 1 year 5 years
Pressure Switch 1 year 25000 hours
PartsCheck every
Replace after
Daily check
Periodically check Remarks
Yes
4-way valve
1 year 25000 hours
Unit
Having the units inspected by a specialist on a regular basis, in addition to regular maintenance such aschanging the filters, will allow the users to use them safely and in good condition for an extended period oftime.The chart below indicates standard maintenance schedule.
(1) Approximate Long evity of Various Parts
The chart shows an approximate longevity of parts. It is an estimation of the time when old parts mayneed to be replaced or repairs need to be made.It does not mean that the parts must absolutely be replaced (except for the fan belt).Please note that the figures in the chart do not mean warranty periods.
(2) Notes
The above chart shows a maintenance schedule for a unit that is used under the following conditions:A. Less than 6 times per hour of compressor stoppageB. The unit stays on 24 hours a day.
Shortening the inspection cycle may need to be considered when the following conditions apply:When used in high temperature/high humidity area or when used in a place where the temperatureand/or humidity fluctuate greatlyWhen plugged into an unstable power source (sudden change in voltage, frequency, wave distor-tions) (Do not exceed the maximum capacity.)When the unit is installed in a place where it receives vibrations or major impacts.When used in a place with poor air quality (containing dust particles, salt, poisonous gas such assulfuric acid gas and sulfuric hydrogen gas, oil mist).
Even when the above maintenance schedule is followed, there could be unexpected problems thatcannot be predicted.
Holding of PartsWe will hold parts for the units for at least 9 years after the termination of the production of the unit,following the standards set by the ministry of economics and industries.
1
2
3
4
72
(3) Details of Maintenance/Inspection
. Check for unusual noise
. Measure the insulation resistance
. Check for excessive slack . Check for wear and tear . Check for unusual noise
. Check for unusual noise
. Free of unusual noise
. Insulation resistance over 1M
. Resistance (30~40N/belt) . Adequate amount of slack=5mm. Belt length=no longer than 102% of the original length
. Free of wear and tear
. Free of unusual noise
. Free of unusual noise
Replace when insulation resistance is under 1M
. Check for clogging of the drainage system
. Check for loosened bolts
. Check for corrosion
. Check for clogging of the drainage system
. Chec
. Check the drainage of the drain trap
k for corrosion
. Clean, free of clogging
. Free of loose screws
. No major disintegration
Clean if dirty or cloggedTighten boltsReplace if extremely worn
. Perform an operation check using the operation data
. Adequately controls the air temperature
Replace if malfunctioning
. Check for torn wire, fraying, and unplugged connectors
. Check insulation resistance
. No frayed or cut wires or unplugged connectors
. Insulation resistance over 1M
Replace when cut or shorted, when the insulation resistance goes below 1M , or if there is a history of abnormal operation
. Perform an operation check using the operation data
. Adequately controls the air temperature
Replace if malfunctioning
. Check for clogging, dirt, and damage
. Clean, free of clogging or damage
Clean
. Check for unusual noise
. Measure insulation resistance
. Free of unusual sound
. Insulation resistance over 1MReplace if insulation resistance goes below 1M
. Make sure the lamp comes on . Comes on when the output is . Rapid drop in brightness
on Replace if the light does not come on when the power is on
. Perform an operation check using the operation data
. Adequately controls the refrigerant temperature when the valve is switched (Check temperature change when cooling/heating is switched.)
Replace if malfunctioning
. Check for clogging and tear
. Clean the filter
. Clean, free of damage Clean the filterReplace if extremely dirty or damaged
. Check the outer appearance
. Make sure its free of foreign objects
. Free of frayed or cut wires
. Free of foreign objectsReplace if damaged or extremely wornRemove foreign objects
. Clean, free of clogging
. Free of wear and tearClean if dirty or cloggedReplace if ePour water into the drain trap
xtremely worm
. Check for unusual noise
. Check insulation resistance
. Check for loosened terminals
. Free of unusual sound
. Insulation resistance over 1M
. Free of loosened terminals
Replace if insulation resistance goes below 1M (under the condition that the refrigerant is not liquefied)Tighten loosened bolts
Adjust the beltReplace if the belt length exceeds 2% of the original length, worn, or used over 8000 hours
If the noise doesn't stop after lubrication, change the oil. Add lubricant once a year.
. Check for clogging, dirt, and damage
. Clean, free of clogging or damage
Clean
Parts
Fan motor
Bearing
Fan belt
Air filter
Linear expansion valve
Display lamp
Compressor
Fan motor
Linear expansion valve
6 months
6 months
6 months
6 months
3 months
Check pointsInspection
CycleUnit What to doAssessment
Drain pan
Drain hose
Float switch
Heat exchanger
Pressure switch
4-way valve
Indo
orO
utdo
or /
Hea
t sou
rce
unit
1 year
1 year
1 year
Heat exchanger
(LED)
DATA BOOK PUHY-P250YHM-APUHY-P500YSHM-APQHY-P250YHM-APFD-P250VM-EPFD-P500VM-E