heatguard - rmc · strainers will continue to block, ... (at time of commissioning) ... this is the...
TRANSCRIPT
Cer
tifie
d Pr
oduc
t
AS4032.2 Lic. No. 1593SAI-Global
AustralianStandard
Part No. IS275Rev - 09584
INSTALLATION INSTRUCTIONS
HeatGuardTM
RMC HeatGuard cmyk cov.pep 9/21/05 2:09 AM Page 2
IS1268 covers.pdf 1 11/10/10 11:35 AM
Rev A - 09584
1
Choosing the correct model . . . . . . . . . 3
How to install the valve . . . . . . . . . . . . 4
How to set the desired temperature . . . . 6
Installation diagrams . . . . . . . . . . . 7-11
Valve specifications . . . . . . . . . . . . . . 12
Troubleshooting . . . . . . . . . . . . . . . . 17
Maintaining the valve . . . . . . . . . . . . 19
CONTENTS
Insulation . . . . . . . . . . . . . . . . . . . . . 16
2
Failure to comply with all aspects of theseinstructions may result in unsafe performance. Allinstallations must comply with AS/NZS 3500 andany State or Local Authority requirements.
Ensure you have chosen the correct model HeatGuard for theapplication.
Standard model: HeatGuard (blue cap)
High Performance model: HeatGuard Ultra (orange cap)
Low Pressure model: HeatGuard Solar HF (orange cap)
For instantaneous systems, use ONLY HeatGuard Ultra
For low pressure systems, use ONLY HeatGuard Solar HF
Do not use ANY HeatGuard model on steam-suppliedsystems.
Check site parameters against the specifications of the chosenvalve. If the site conditions are outside those specified for thevalve, they must be rectified prior to installing the valve.
CHOOSING THE CORRECT MODEL
CHECKING SITE PARAMETERS
3
• It is recommended the valve be installed as close as possibleto the hot water system, however it may be fitted anywhereon the hot water supply pipe if necessary.
• If the valve is fitted at the point-of-use there must be aminimum one (1) metre pipe run between the valve and theoutlet fixture.
• Insulation is provided with this valve. Insulation must be fitted in situations where freezing is a possibility.
STEP 1 Flush the system thoroughly before fitting HeatGuard.It is CRITICAL that all debris is flushed from thepipework prior to installing the valve. Not flushing thesystem properly is the most common cause ofdifficulties.
STEP 2 If the water supply is of poor quality so that the valve’sstrainers will continue to block, fit an additional filteror strainer to the system.
STEP 3 Install HeatGuard in accordance with the installationdiagrams in this booklet. Do not use excess threadsealant as this may cause the valve to fail.
STEP 4 Set the valve at the desired temperature by followingthe instructions on Page 6.
HOW TO INSTALL THE VALVE
4
STEP 5 Enter installation details on sticker provided, and affixnear system.
• Valve MUST NOT be subjected to heat during installation asthis may damage the valve internals.
• It is recommended that isolating valves be fitted to allow easyaccess to the valve if the strainers need to be cleaned.
• In situations where the hot pressure may exceed the coldpressure and on pumped ring main systems, non-return valvesMUST be fitted to BOTH inlets.
Tempering valves provide optimum performance when installedwith hot and cold supplies of equal dynamic pressure, i.e.pressure under flow conditions. (The static supply pressuresoften give NO indication of the dynamic supply pressures). It isrecommended that the hot and cold supplies to each temperingvalve be delivered via pressure control valves. In most domesticinstallations it should be possible to fit one control valve at theproperty boundary to control pressure to the whole site. Forcommercial installations it is recommended to fit a pressurecontrol valve on each inlet to the tempering valve.
ABOUT SUPPLY PRESSURES
5
• Every valve must be commissioned on-site to ensure correctdelivery of the desired mixed water temperature, asinstallation conditions can vary from site to site.
• Prior to commissioning the valve the hot water system must beswitched on and delivering hot water at a minimum of 60°C.
STEP 1 Locate the nearest outlet being supplied by the valve.
STEP 2 Open the outlet to allow a flow rate of at least four (4) litres/minute.
STEP 3 Allow the water to run for at least one minute toensure the mixed water temperature has settled.
STEP 4 Using a thermometer, check the mixed watertemperature.
Is desired temperature achieved? Yes? – go to Step 7.No? – go to next Step.
STEP 5 Adjust the valve as shown in Diagram 4 on page 15until desired mixed outlet temperature is achieved.
STEP 6 Repeat Steps 1-4.
STEP 7 Replace the cap.
HOW TO SET THE DESIRED TEMPERATURE
6
For
Cont
rolle
d Pr
essu
re W
ater
Hea
ter:
Dom
estic
Bui
ldin
g- V
alve
fitte
d at
the
Hea
ter
-
INSTALLATION DIAGRAMS
7
For
Cont
rolle
d Pr
essu
re W
ater
Hea
ter:
Dom
estic
Bui
ldin
g- V
alve
fitte
d re
mot
ely
from
the
Hea
ter
-
Whe
re th
ere
is no
Pre
ssur
e Re
duci
ng V
alve
con
trolli
ng th
e w
hole
insta
llatio
n (*
), it
isre
com
men
ded
that
the
cold
sup
ply
to th
e te
mpe
ring
valv
e be
con
trolle
d by
a P
ress
ure
Limiti
ng V
alve
(**)
of t
he s
ame
pres
sure
set
ting
as th
e va
lve
supp
lyin
g th
e w
ater
hea
ter.
8
For
Sola
r W
ater
Hea
ter:
Dom
estic
Bui
ldin
g
9
For
Hea
t Exc
hang
e W
ater
Hea
ter:
Dom
estic
Bui
ldin
g
10
For
Pum
ped
Supp
lies,
Mul
tiple
Val
ves:
Com
mer
cial
Bui
ldin
g
It is
reco
mm
ende
d th
at P
ress
ure
Redu
cing
Val
ves
are
insta
lled
for
each
val
ve to
ens
ure
any
pres
sure
fluc
tuat
ions
from
the
pum
ped
supp
ly o
r ot
her
sour
ce a
re m
inim
ised
prio
rto
sup
plyi
ng w
ater
to th
e te
mpe
ring
valv
es.
Ther
e M
UST
be
non-
retu
rn v
alve
s fit
ted
to B
OTH
hot
and
col
d in
lets
for
this
type
of
insta
llatio
n. E
asily
acc
esse
d, fu
lly s
ervi
ceab
le s
train
ers
(in a
dditi
on to
the
strai
ners
supp
lied
with
the
Tem
perin
g Va
lve)
sho
uld
be in
stalle
d on
eac
h flo
or o
r ci
rcui
t.
11
VALVE SPECIFICATIONS
Cold water supply temperature: 5°C – 30°C
Hot water supply temperature: 60°C – 90°C 1
Optimum outlet temperature range: 40°C – 50°C 2
Set temperature Must be commissionedon site to achieve desiredoutlet temperature
Accuracy of outlet temperature: ±3°C - tested to AS4032.2between 40°C and 50°C
Minimum temperature differential 15°C 3(between hot supply and outlet temperature):
Supply pressure, static: 1600kPa maximum
Supply pressure, dynamic: 500kPa maximum
Supply pressure imbalance, dynamic: 2 : 1 maximum 4(at time of commissioning)
Maximum permitted pressure variation in either supply, in order to control outlet temperature to ±3°C: ±10% maximum 5,6
(from supply pressure at commissioning)
Minimum flow rate: 4 litres/min
VALVE SPECIFICATIONS
12
Notes:1. AS/NZS 3500.4 Clause 1.9.1 requires the minimum hot water storage
temperature to be 60°C.2. For applications outside the requirements of AS/NZS 3500 and AS4032.2, it
is possible to set the valve as high as 55°C or as low as 35°C, depending onsite conditions
3. This is the minimum difference required to ensure shut-off of outlet flow in theevent of cold supply failure in accordance with AS4032.2, providing thevalve is set between 40°C and 50°C.
4. The maximum permitted ratio of supply pressures, under dynamic (flow)conditions. For optimum performance it is recommended that the hot andcold pressures at commissioning are as close as possible to equal.
5. The maximum permitted variation in either supply pressure from the pressureat commissioning in order to control the outlet temperature to ±3°C.
6. Note that rapid changes in supply pressure can result in a spike in the outlettemperature beyond ±3°C. Following a rapid change in supply pressure itmay take a number of seconds for the temperature to return to within a ±3°Climit. Steps should be taken on-site to eliminate any cause of rapid supplypressure variation.
DIAGRAM 1 – FLOW CHARACTERISTICS
Flow Rate (litres/min)
15mm 20mm
Pres
sure
Los
s (k
Pa)
13
C
M
Y
CM
MY
CY
CMY
K
Model A B C D EHeatGuard 15 121 58 37 107 61
HeatGuard 20 140 58 37 61
DIAGRAM 2 – DIMENSIONS
14
107
C
M
Y
CM
MY
CY
CMY
K
HeatGuard 15
HeatGuard 20
DIAGRAM 3 – FITTING CONFIGURATION
TURN ANTI-CLOCKWISE TOINCREASE TEMPERATURE
TURN CLOCKWISE TOREDUCE TEMPERATURE
DIAGRAM 4 – TEMPERATURE ADJUSTMENT
15
C
M
Y
CM
MY
CY
CMY
K
INSULATION
16
POSS
IBLE
CA
USE
•In
let t
empe
ratu
res
are
not
with
in s
peci
fied
limits
•H
ot a
nd c
old
supp
lies
are
reve
rsed
.
•Va
lve
cont
ains
deb
ris.
•St
rain
ers
cont
ain
debr
is.
•Fl
uctu
atin
g su
pply
pre
ssur
es.
•St
rain
ers
cont
ain
debr
is.
•In
let t
empe
ratu
res
may
hav
eal
tere
d du
e to
sea
sona
lte
mpe
ratu
re v
aria
tions
.
•H
ot a
nd c
old
supp
lies
are
reve
rsed
.
•H
ot/C
old
wat
er h
asm
igra
ted
to o
ther
inle
t.Re
fer
also
to p
oint
1.
SOLU
TIO
N•
Ensu
re in
let t
empe
ratu
res
are
with
in th
e sp
ecifi
edlim
its fo
r th
e va
lve.
•Re
fit th
e va
lve
with
Hot
/Col
d su
pplie
s fit
ted
toth
e co
rrec
t con
nect
ions
.•
Flus
h w
ater
thro
ugh
valv
ean
d cl
ean
non-
retu
rns
and
strai
ners
.•
Cle
an s
train
ers,
ens
urin
gde
bris
is re
mov
ed.
•In
stall
pres
sure
red
ucin
gva
lves
.•
Cle
an s
train
ers,
ens
urin
gde
bris
is re
mov
ed.
•Re
set v
alve
. (Se
e Pa
ge 6
.)
•Re
fit th
e va
lve
with
Hot
/Col
d su
pplie
s fit
ted
toth
e co
rrec
t con
nect
ions
.•
Che
ck n
on-r
etur
n va
lve
isno
t fou
led.
Cle
an if
nece
ssar
y.
PRO
BLEM
1.Th
e de
sired
mix
edw
ater
tem
pera
ture
cann
ot b
e ob
tain
ed o
rva
lve
is di
fficu
lt to
set
.
2.M
ix te
mpe
ratu
reun
stabl
e or
cha
ngin
gov
er ti
me
3.Ei
ther
full
hot o
r fu
llco
ld w
ater
flow
ing
from
out
let f
ixtu
re
TROUBLESHOOTING
17
•H
ot
or
cold
wat
er
supp
lyfa
ilure
.•
Stra
iner
s are bl
ocke
d byde
bris.
•In
lets fo
uled
by
debr
is.
•Fl
uctu
atin
g su
pply
pres
sure
s.
•H
ot
and co
ld
supp
lies ar
ere
vers
ed.
•N
on-r
etur
n va
lves
foul
ed
byde
bris.
•W
ater
velo
city
abov
eve
loci
tyre
quire
men
tsof
AS3
500.
1
•Re
store
inle
t supp
lies an
dch
eck
mix
tem
pera
ture
.•
Cle
an
strai
ners
and
non-
retu
rns,
ensu
ring al
lde
bris
is re
mov
ed.
Flus
h valv
e.
•C
heck
valv
e and in
let
fittin
gs
for bl
ocka
ges.
Cle
an
or
flush
asne
cess
ary.
•In
stall pr
essu
re
redu
cing
valv
es.
•Re
fit
the va
lve w
ithH
ot/C
old su
pplie
s fitte
d toth
e corr
ect co
nnec
tions
.
•C
lean
non-
retu
rns an
dstr
aine
rs, en
surin
g all
debr
is is rem
oved
.Fl
ush va
lve.
•Re
duce
wat
er ve
loci
ty (b
est
achi
eved
by fit
ting a
pres
sure
redu
cing
valv
e).
4.N
o flow
from
the va
lve
outle
t
5.Fl
ow
rate
redu
ced or
fluct
uatin
g
6.M
ixed
wat
erte
mpe
ratu
re
does
not
chan
ge
whe
nte
mpe
ratu
re
adju
ster is
alte
red
7.H
ot
wat
er
flow
s into
the
cold
wat
er
syste
m
orvi
ce
vers
a
V
8.
alve
isno
isy
18
TROUBLESHOOTINGPO
SSIB
LECA
USE
SOLU
TIO
NPR
OBL
EM(continued)(continued)
• We recommend the valve is checked annually to ensure itscontinued function. For installations with poor or unknownwater quality, or other adverse supply conditions, it may benecessary to check the valve more frequently.
• The temperature should be checked at the same outlet as wasused for commissioning in the first instance (refer to theinstallation sticker). If the temperature is more than 2°C fromthe commissioning temperature or outside the requirements ofAS/NZS 3500.4, refer to Troubleshooting guide on page 16.
• The strainers and non-return valves can be easily accessed forcleaning via the union connections.
• The valve itself cannot be serviced. If the valve fails it must bereplaced. Do not disassemble the valve other than to removethe snap-on cap, strainers and non-return valves as shown.
MAINTAINING THE VALVE
19
NOTES
4
NOTES
4
CUSTOMER SERVICE:
Phone: 1800 810 803 Fax: 1800 062 669
www.relianceworldwide.com.au
Reliance Worldwide, a division of GSA Industries (Aust.) Pty. Ltd. ABN 71 004 784 301
RMC HeatGuard cmyk cov.pep 9/21/05 2:09 AM Page 1
© All Rights Reserved 2012
www.rwc.com.au
Reliance Worldwide Corporation (Aust.) Pty. Ltd.ABN 71 004 784 301
© All Rights Reserved 2016