Page 2 Introduction and Dimensions Page 3 Specifications Installation of Components Page 4 & 5 Field Service Checklist Page 6 Preliminary Circuit Analysis Low Fire Start Time Adjustment Sensitivity Adjustment Page 7 Wiring Diagrams Page 8 Temperature Calibration Valve Adjustments
Table of ConTenTs
1
Series 14 Installation Instructionsand field service checklist
© 2008 Maxitrol Company, All Rights Reserved
SyStem ComponentS
Amplifiers (A1014 shown)A1014 (all temperature ranges)A1014U (replaces A1014L1, suitable replacement for A1014)(all temperature ranges - includes 10 or 20 second low fire start capability)
Amplifier-Selectors (with integral temperature dial) (A1014U Amplifier / AD1014U Amplifier-Selector shown)
AD1014U (replaces AD1014 and AD1014L1)(all temperature ranges - includes 10 or 20 second low fire start capability)
Dual Temperature Amplifier-Selectors: (AD1214 shown)AD1214__ (integral dual selector - any comb. of 2 standard ranges avail.)
Example1 - AD1214BC (120° to 170° F and 160° to 210° F, use w/TS214BCExample2 - AD1214AD (80° to 130° F and 200° to 250° F, use w/TS214AD
Remote Temperature Selectors:TD114 (55° to 90° F w/override 0° to 40° over set point)TD114A (80° to 130° F)TD114A-1 (80° to 130° F w/ override 0° to 40° F over set point)TD114B (120 to 170° F)TD114C (160° to 210° F)TD114D (200° to 250° F)
TD114E (100° to 250° F)TD114F (40° to 80° F w/override 0° to 40° over set point) TD114G (90° to 140° F)TD114-1 (55° to 90° F w/120° to 170° F override) * use w/TS114TD114-2 (55° to 90° F w/two outputs)TD114G-2 (90° to 140° F w/two outputs)NOTE: Remote Selector and Discharge Temperature Sensor must have same temperature range to be compatible.Optional: ETD-1 enclosure, EFP-1 cover plate only - no enclosure
Discharge Air Temperature Sensors: use with Mixing TubeTS114 (55° to 90° F)TS114A (80° to 130° F)TS114B (120° to 170° F)TS114C (160° to 210° F)TS114D (200° to 250° F)TS114E (100° to 250° F)TS114F (40° to 80° F)TS114G (90° to 140° F)TS114J (110° to 160° F) To be used w/ AD1014-1116TS214__ (dual sensor - any combination of 2 standard ranges available)Example 1 - TS214G (55° to 90° F and 90° to 140° F, use w/TD114 & TD114G, or TD214G [selector w/switch], or AD1214G)Example 2- TS214AD (80° to 130° F and 200° to 250° F, use w/TD114A & TD114D, or TD214AD [selector w/ switch], or AD1214AD)
Mixing Tubes: (and sensor)MT1-9 or 2-9 (9” length)MT1-12 or 2-12 (12” length)MT1-23 or 2-23 (23” length)MT1-28 or 2-28 (28” length)MT1-57 (57” length)
Valves:M411 (3/8” & 1/2” pipe size)M511 (1/2” & 3/4” pipe size)M611 (3/4” & 1” pipe size)MR212D (1”, 1-1/4”, 1-1/2” pipe size)MR212E (1-1/2” & 2” pipe size)MR212G (2-1/2” & 3” pipe size)MR212J (4” flanged)MR212-2D, E, G, J (used for 2-speed blower or dual fuel operation)
NOTE: M (Modulator) valve requires a pressure regulator for high fire setting. MR (Modulator-Regulator) valve requires no pressure regulator up to 5 psi.
OPTIONAL SYSTEM COMPONENTS:Dual Temperature Selector:DOOR HEATERS -TD114HD use w/TS114 (door closed 55° to 90° F/open 90° to 140° F)PAINT SPRAY BOOTHS OR OTHER DUAL APPLICATIONS- TD214__ (dual selector w/switch - any comb. of 2 standard ranges avail.) Example 1- TD214G (55° to 90° F [spray] and 90° to 140° F [dry], use w/TS214GExample 2 - TD214AD (80° to 130° F and 200° to 250° F, use w/TS214ADTD214__X (same as TD214__, less enclosure)
Inlet Air Temperature Sensors: use with Mixing TubeTS10765A (8:1 ratio)TS10765B (5:1 ratio)TS10765C (3.5:1 ratio)
Override Stat: (use only with TD114, F ,-1, A-1)T115 (40° to 90° F)
INTRODUCTION AND DIMENSIONS
Selectra SERIES 14 electronic gas flame modulation systems are designed primarily for make-up air heating, as components of direct fired equipment. They may be field installed on existing equipment or specified for new equipment installation. Natural, manufactured, mixed, LP and LP gas air mixture are compatible gases.
The systems utilize Modulator or Modulator-Regulator valves. Am-plifiers are available with low-fire start, and with integral or remote temperature selection. A discharge air temperature sensor is mounted within a mixing tube housing.
SyStem optIonS
Option 1 - a room override thermostat provides space temperature control by raising the discharge air temperature to a pre-selected point - when used in conjunction with the remote temperature selector.
Option 2 - an inlet air sensor (and mixing tube) provides inverse change in discharge air for each degree change in inlet air - when installed in a convenient duct location upstream of the burner. Option 3- a dual temperature selector replaces TD114 to provide dual control for door heaters, or other applications such as paint spray booths (TD214_ or _X, or AD1214_).
TD114
A1014U, AD1014U
T115
2
(AD models have integrated temperature dial)
© 2008 Maxitrol Company, All Rights Reserved
2.25
1.503.00
2.62
2.62
.19
2.96
4.69
5
6
7
8
4
3
2
1
MOUNTING HOLES
6.00
3.38
3.001.50
(152.4)
(85.9)
(76.2)(38.1)
1.69
2.00
(42.9)
(50.8)
2.56
3.463.25
1.69
1.41
1.75
MIXING TUBES
ETD-1
AD1214
3
A1014
© 2008 Maxitrol Company, All Rights Reserved
DO NOT
tAmpeR
1 2 3 4 5 6 7 8
DECREASE INCREASE
SenSItIVIty
4.13
2.62
4.51
2.25
1.34
.50
1.03
1.03
1.34
4 3/16
2.50REF.
1.25
1.50
MOUNTING HOLE4-PLACES
4 3/16
3.00REF.
4 3/16
2.50REF.
1.25
1.50
MOUNTING HOLE4-PLACES
4 3/16
3.00REF.
2.62(66.5)
5.75(148.1)
4.85122.7)
.31(7.9)
1.88(47.6)
#10-12 X 1/2” LG.BINDING HD. SHMETAL SCR (2-REQ’D.)
#10-16 X 1/2” LG.BINDING HD. SHEET METAL SCREW (2-REQ’D.)
1.00 DIA.
LENGTH SEE PAGE 1)
19/16
4© 2008 Maxitrol Company, All Rights Reserved
SPECIFICATIONS
Power Requirements: 24 VAC, 50/60 Hz Class II transformer
NOTE: Transformer secondary must not be grounded in any portion of the circuit external to a Maxitrol amplifier. If exist-ing transformer is grounded, a separate isolated transformer must be used. Electrical interference may effect performance and/or damage equipment.
Ambient Limits: Operating..... -40o to 125o F / -40o to 52o C Non-operating..... -50o to 185o F / -46o to 85o C
Gases: Suitable for application in natural, manufactured, mixed gases, liquefied petroleum gases and LP Gas Air Mixture piping systems.
Remote (or Dual) Selector: Install in control cabinet or other chosen location. NOTE: Suffix letters must match, e.g. TS114A must be used with TD114A. For wiring runs longer than 200 ft. substitute ES261-1/ES261-2 for TD114. The ES261s are a 2-piece version of the TD114. ES261-1 is a temperature setting dial only, ES261-2 must be mounted at furnace location.
Discharge Temperature Sensor / Mixing Tube Assembly: sensor housed in mixing tube, install in discharge air stream.
Optional:
Dual Temperature Selector: see preceding Remote/Dual selector.
Room Override Stat: mount in heated area not in direct path of discharge air stream.
Inlet Air Sensor: install in convenient location upstream of burner, in intake air duct.
INSTALLATION OF COMPONENTS Control wires connected to the Override Stat, Discharge Air Sensor, or Remote Temperature Selector must not be run close to or inside conduit with power or ignition wires. Doing so may cause the unit to function erratically or may destroy the amplifier. If shielded wires are used, shield must be insulated and grounded at the amplifier location only.
Wiring Run: If control wiring is inside conduit with line voltage wiring, use shielded cable up to 100 ft. For best results up to 200 ft., run control wiring in separate conduit. For longer runs see Remote Selector below.
Amplifier / Amplifier-Selector: contains the wiring terminals and sensitivity adjustment - install in any convenient location that is protected from the weather and contaminated atmosphere.
typICAl GAS tRAInS Modulator (M) or Modulator-Regulator (MR) Valve: Mount in upright position in horizontal run of pipe, downstream of other controls - a separate gas pressure regulator must be used with any modulator (M) valve.
MR Valve: Modulator-regulator valve
M Valve: Regulator upstream of modulator valve
Vent: M411, 511, 611.....vertical vent outlet 1/8” NPT - 12A06 installed. MR212.....two vents located in upper housing, both equipped with vent limiting means
Pressure Limits: Maximum Discharge Pressure: (M411, 511, 611)................ 7” w.c. / 17 mbarStatic Pressure Rating: (M411, 511, 611).................5.0 psi / 345 mbarMaximum Operating Inlet Pressure: M411, 511, 611................. 1 psi / 70 mbar MR212.............................. 5.0 psi / 345 mbarMaximum Emergency Exposure*: M411, 511, 611.................. 3.0 psi / 210 mbar MR212............................... 12.5 psi / 862 mbar * May not function properly at this pressure, but will suffer no internal damage
FIEL
D S
ERVI
CE
Ch
ECk
LIST
Sym
pto
mPO
SSIB
LE C
AU
SEFI
ELD
TES
TR
EMED
YA
.N
o ga
s flo
w.
1. M
odul
atin
g va
lve
impr
oper
ly in
stal
led
(or s
ee S
ympt
om ‘L
’).1.
Arr
ow o
n si
de o
f Val
ve s
houl
d po
int i
n di
rect
ion
of g
as fl
ow.
1. In
stal
l pro
perly
.
B.
Con
tinuo
us
Low
Fire
(ele
ctro
nics
pr
oble
m).
2. S
hort
circ
uit o
r no
volta
ge to
the
ampl
ifier
.3.
Ope
n ci
rcui
t in
TD11
4. R
emot
e Te
mpe
ratu
re
Sel
ecto
r circ
uit o
r wiri
ng.
4.
Sho
rt ci
rcui
t in
TS11
4, D
isch
arge
Air
Sen
sor c
ircui
t or
wiri
ng.
5. F
aulty
am
plifi
er.
2. C
heck
for 2
4VA
C a
t am
plifi
er te
rmin
als
7 an
d 8.
3. In
spec
t for
loos
e or
bro
ken
wire
s be
twee
n am
plifi
er te
rmi-
nals
1an
d 2,
and
TD
114
term
inal
s 1
and
2, a
nd T
D11
4
term
inal
s 1
and
3.4.
Con
nect
test
resi
stor
as
desc
ribed
in P
relim
inar
y C
ircui
t A
naly
sis.
Fol
low
pro
cedu
re o
utlin
ed.
5. C
heck
item
s 2,
3 a
nd 4
.
2. P
rove
the
pow
er s
ourc
e.3.
Tig
hten
con
nect
ions
or r
epla
ce w
iring
.4.
If m
odul
atin
g vo
ltage
s ar
e ob
tain
ed, C
heck
TS
114
circ
uit f
or s
horts
. R
epla
ce
TS11
4 if
nece
ssar
y.5.
If it
ems
2, 3
, and
4 c
heck
out
and
mod
ulat
ing
volta
ges
are
still
not
obt
aine
d,
ampl
ifier
may
be
assu
med
faul
ty.
Rep
lace
.
C.
Con
tinuo
us L
ow F
ire
(ele
ctro
nics
6. S
hort
circ
uit o
r ope
n ci
rcui
t in
Mod
ulat
or C
oil.
7. P
lung
er m
issi
ng, j
amm
ed o
r im
prop
erly
inst
alle
d.6.
Mea
sure
resi
stan
ce a
cros
s m
odul
ator
term
inal
s w
ith c
on-
nect
ing
wire
s de
tach
ed.
7. In
spec
t. P
lung
er s
houl
d be
inst
alle
d pe
r dia
gram
s pa
ge
and
oper
ate
freel
y in
sol
enoi
d sl
eeve
.
6. R
epla
ce m
odul
ator
hea
d if
not a
ppro
xim
atel
y 45
-55
ohm
s fo
r M61
1 Va
lve
and
60-8
0 oh
ms
for M
R21
2 Va
lve.
7. C
lean
or r
epla
ce p
lung
er if
nec
essa
ry.
Inst
all a
s pe
r dia
gram
s pa
ge 3
.
D.
Cor
rect
Min
imum
Fire
Er
ratic
or P
ulsa
ting
Flam
e.8.
Inco
rrec
t by-
pass
met
erin
g va
lve
adju
stm
ent.
9. E
xces
sive
neg
ativ
e bu
rner
pre
ssur
e.
8. S
ee v
alve
adj
ustm
ents
on
page
8.
9. C
lose
mai
n ga
s su
pply
and
mea
sure
man
ifold
pre
ssur
e w
ith b
low
er o
pera
ting.
Rea
ding
sho
uld
be le
ss th
an
1.5”
w.c
. neg
ativ
e pr
essu
re.
8. A
djus
t to
prop
er m
inim
um fi
re.
9. If
read
ing
is g
reat
er th
an 1
.5” n
egat
ive
pres
sure
, che
ck fo
r clo
gged
filte
rs o
r ot
her i
nlet
air
rest
rictio
ns.
Con
sult
fact
ory
for o
ther
sol
utio
ns.
E.
Con
tinuo
us h
igh
Fire
(e
lect
roni
cs p
robl
em).
10. S
hort
circ
uit i
n TD
114
Rem
ote
Tem
pera
ture
Sel
ecto
r ci
rcui
t or w
iring
.11
. Ope
n ci
rcui
t in
TS11
4/TS
1076
5. D
isch
arge
or I
nlet
A
ir S
enso
r Circ
uit o
r wiri
ng.
12. J
umpe
r not
con
nect
ed a
cros
s am
plifi
er te
rmin
als
2 an
d 3.
(A10
14 o
nly)
10. I
nspe
ct fo
r sho
rts a
t or b
etw
een
Am
plifi
er te
rmin
als
1 an
d 2
or T
D11
4 te
rmin
als
1 an
d 3.
11
. Che
ck T
S11
4/TS
1076
5 fo
r ope
n in
tern
al c
ircui
t. C
on-
nect
test
resi
stor
as
desc
ribed
in P
relim
inar
y C
ircui
t A
naly
sis.
Fol
low
pro
cedu
re o
utlin
ed.
12. I
nspe
ct.
10. C
orre
ct w
iring
if s
horts
exi
st.
11. I
f mod
ulat
ing
volta
ges
are
obta
ined
, che
ck T
S11
4/TS
1076
5 fo
r ope
n ci
rcui
ts.
Rep
lace
TS
114/
TS10
765.
12. C
orre
ct th
e w
iring
.
F.C
ontin
uous
hig
h Fi
re
(ele
ctro
nics
13.
Fore
ign
obje
ct h
oldi
ng v
alve
ope
n.14
. P
lung
er ja
mm
ed.
13. R
emov
e bo
ttom
pla
te a
nd in
spec
t val
ve a
nd s
eat.
14. I
nspe
ct.
Plu
nger
sho
uld
be s
moo
th, c
lean
, and
ope
rate
fre
ely
in s
olen
oid
slee
ve.
13. C
lean
sea
t. C
lean
val
ve o
r rep
lace
if n
eces
sary
.14
. Cle
an, o
r if n
eces
sary
, rep
lace
plu
nger
.
G.
Inco
rrec
t Max
imum
Fire
.15
. Inl
et p
ress
ure
too
low
.
16. I
ncor
rect
out
let p
ress
ure
adju
stm
ent o
f Pre
ssur
e R
egul
ator
.
15. R
ead
pres
sure
at i
nlet
to m
odul
atin
g va
lve
usin
g a
ma-
nom
eter
with
uni
t ope
ratin
g at
full
fire.
Pre
ssur
e sh
ould
be
equ
al to
the
sum
of o
utle
t pre
ssur
e se
tting
plu
s pr
es-
sure
dro
p of
he
valv
e (s
ee M
axitr
ol C
apac
ity C
hart)
.16
. Rea
d m
anifo
ld p
ress
ure
usin
g m
anom
eter
and
com
pare
w
ith re
com
men
datio
n of
equ
ipm
ent m
anuf
actu
rer.
15. I
ncre
ase
inle
t pre
ssur
e if
poss
ible
.16
. See
val
ve a
djus
tmen
ts o
n pa
ge 8
.
H.
Erra
tic o
r Pul
satin
g Fl
ame.
17.
Hun
ting.
18.
Err
atic
air
patte
rns
or im
prop
er T
S11
4 lo
catio
n.19
. W
iring
is ru
n ne
xt to
hig
h vo
ltage
sw
itchi
ng c
ircui
ts
caus
ing
indu
ced
volta
ges.
20.
Faul
ty A
mpl
ifier
or e
rrat
ic v
olta
ge s
uppl
y.
17. A
djus
t sen
sitiv
ity c
ontro
l cou
nter
-clo
ckw
ise.
18. C
onne
ct te
st re
sist
or a
s de
scrib
ed in
Pre
limin
ary
Circ
uit
Ana
lysi
s. T
urn
TD11
4 se
lect
or d
ial s
o he
ater
goe
s th
roug
h its
ent
ire m
odul
atin
g ra
nge.
19. T
empo
raril
y w
ire e
ach
of T
D11
4, T
S11
4, a
nd M
R21
2 ex
tern
ally
and
obs
erve
hea
ter/
equi
pmen
t ope
ratio
n.20
. With
test
resi
stor
con
nect
ed (p
er It
em #
18) a
nd T
D11
4 lo
cally
con
nect
ed (p
er it
em#1
9), t
urn
TD11
4 se
lect
or
dial
thro
ugh
entir
e m
odul
atin
g ra
nge.
Obs
erve
D.C
. vo
ltage
acr
oss
mod
ulat
or te
rmin
als.
17. I
f flam
e st
abili
zes,
adj
ust s
ensi
tivity
con
trol t
o m
aint
ain
an e
ven
flam
e.18
. If t
he fl
ame
is s
tead
y th
roug
hout
the
entir
e m
odul
atin
g ra
nge,
the
TS11
4 m
ust
be m
oved
.19
. If s
moo
th o
pera
tion
resu
lts, i
sola
te e
ffect
ed w
iring
from
sou
rce
of in
duce
d vo
ltage
.20
. If e
rrat
ic o
r uns
tabl
e D
.C. v
olta
ges
are
obta
ined
thro
ugho
ut th
e m
odul
atin
g ra
nge,
the
ampl
ifier
may
be
assu
med
faul
ty.
Rep
lace
. If
erra
tic o
pera
tion
is
note
d on
ly o
ver a
sm
all r
ange
of 2
or 3
vol
ts, t
he v
olta
ge s
ourc
e m
ay c
onta
in
surg
es.
Con
sult
Max
itrol
.
I.In
corr
ect D
isch
arge
Air
Tem
pera
ture
.21
. Inl
et A
ir S
enso
r is
used
.22
. Inc
orre
ct W
iring
.23
. Sys
tem
out
of c
alib
ratio
n.24
. Im
prop
er T
S11
4 lo
catio
n.25
. Roo
m O
verr
ide
Ther
mos
tat c
ircui
t clo
sed.
21. I
nlet
Air
Sen
sor c
hang
es 1
0 fo
r eac
h 3.
50 , 50 ,
or 8
0
outs
ide
tem
pera
ture
cha
nge
from
600 (
pred
eter
min
ed
– tu
rndo
wn
varie
s w
ith m
odel
use
d).
22. C
heck
wiri
ng d
iagr
ams
page
7.
23. S
ense
d te
mpe
ratu
re (t
herm
omet
er n
ext t
o TS
114)
doe
s no
t cor
resp
ond
to T
D11
4 se
tting
.24
. Sen
sed
tem
pera
ture
(the
rmom
eter
nex
t to
TS11
4) d
oes
not r
epre
sent
ave
rage
dis
char
ge a
ir te
mpe
ratu
re.
25. R
emov
e O
verr
ide
Ther
mos
tat l
ead
from
term
inal
2 o
f TD
114.
21. S
ense
d te
mpe
ratu
re w
ill v
ary
from
TD
114
dial
set
tings
. Th
is is
inte
ntio
nal.
22. C
orre
ct w
iring
.23
. See
cal
ibra
tion
proc
edur
e.24
. Mov
e TS
114
to lo
catio
n w
here
ave
rage
repr
esen
tativ
e te
mpe
ratu
re c
an b
e se
nsed
.25
. TD
114
dial
set
ting,
then
che
ck th
erm
osta
t set
ting
and/
or c
heck
wiri
ng fo
r sh
orts
.
J.B
urne
d ou
t Tra
nsfo
rmer
.26
. Sho
rt ci
rcui
t in
mod
ulat
or c
oil.
27. S
hort
circ
uit b
etw
een
ampl
ifier
and
mod
ulat
or v
alve
.26
. Mea
sure
resi
stan
ce a
cros
s m
odul
ator
term
inal
s w
ith re
d le
ad w
ires
disc
onne
cted
.27
. Ins
pect
wiri
ng.
26. R
epla
ce m
odul
ator
hea
d if
less
than
40
ohm
s.27
. Cor
rect
wiri
ng is
sho
rt is
foun
d.
K.
Dis
char
ge A
ir Te
mpe
ratu
re
too
Low
whe
n T1
15 is
op
erat
ive.
28. T
oo lo
w a
n O
verr
ide
Tem
pera
ture
set
ting.
29. B
urne
r cap
acity
may
be
insu
ffici
ent.
28. C
heck
“Ove
rrid
e Te
mpe
ratu
re S
elec
tor”
of T
D11
4.
29. C
heck
for h
igh
fire
(Max
imum
man
ifold
pre
ssur
e sp
eci-
fied
for h
eate
r).
28. R
eset
to c
orre
ct te
mpe
ratu
re.
29. I
f on
high
fire
, con
trol c
an d
o no
mor
e. H
eate
r una
ble
to fu
rnis
h ad
ditio
nal
heat
to ra
ise
tem
pera
ture
.
© 2
008
Max
itrol
Com
pany
, All
Rig
hts
Res
erve
d5
10 SEC
20 SEC
PRELIMINARY CIRCUIT ANALYSIS
For ease in troubleshooting, it is advisable to wire the system as follows (this differs from the normal connection). The Discharge Air Sensor is disconnected and replaced with a 10,000 ohm, 1/2 watt test resistor (terminals 3 and 4). If inlet air sensor is being used, disconnect and replace with a jumper. On units where the Remote Temperature Selector is located a considerable distance from the heater, it may be advantageous to connect the selector at the heater location.
Connect a DC volt meter (capable of reading 0-24 V DC) on the Modulator or Modulator-Regulator Valve terminals. Set the temperature to the minimum dial setting. The DC voltage should read 0 volts. The DC voltage should gradually increase to at least 20 volts as you slowly rotate the dial to the maximum dial setting. If these voltages are obtained, the valve function can now be checked out.
The operation of the valve with regard to voltage is as follows: from 0 volts to approximately 5 volts, the modulating valve should be on bypass flow with the heater operating on low or minimum fire. From approximately 5 volts to 15 volts DC, the valve should be performing its modulating function, and the heater should be firing at a modulated flow rate between low and high fire, depending upon the voltage. Above approximately 15 volts DC, the valve should be delivering full flow to the heater and the unit should be on full fire. If the DC voltage is obtained on the valve terminals, but the heater does not respond as described, the problem can be isolated to the valve itself or to the gas control manifold of the heater (see check list, pages 4 and 5).
In the event proper voltages are obtained, and the valve responds correctly to these DC voltages, the problem could well be in the wiring leading to the Discharge Air Sensor or the Discharge Air Sensor itself. This should be also reviewed in the check list.
If the proper voltages are not obtained when wired as instructed, the problem can be isolated to the electronics and this may once again be reviewed in the check list.
After the troubleshooting test, remove the test resistor and recon-nect the Discharge Air Sensor to terminals 3 and 4. If Remote Tem-perature Selector has been moved return it to its original position.
SENSITIVITY ADjUSTMENT
The sensitivity control will allow the user to control the response of the system. Caution should be exercised in the use of this adjustment. Under normal usage the pointer should be located on the mark on the label (A1014).
If hunting is encountered (rapid oscillation), rotating the sensitivity adjustment (R23 on A1014U, AD1014U) counter-clockwise will dampen the oscillation - stabilizing the flame.
DO NOT adjust unless necessary, because decreasing the sensitivity will increase the temperature “DROOP” of the system.
DECREASE INCREASE
SenSItIVIty
© 2008 Maxitrol Company, All Rights Reserved 6
A1014U & AD1014U LOW FIRE START TIME ADjUSTMENT
The low fire start duration can be set to approximately 0, 10 or 20 seconds, and begins timing after the amplifier has been energized.
The time is set by placing the jumper over the appropriate jumper block pins.NOTE: When low fire start is desired the jumper must be removed from the J6 jumper block and placed on the J5 jumper block.
The M/MR valve remains in the low fire setting position during the low fire start time period.
Sensitivity adjustment
A1014 model amplifier
0 second low-fire start jumper block
A1014U and AD1014U model amplifier-selector (cover removed) (AD1014U Shown)
4
3
2
1
5
6
7
8
10 or 20 second low-fire start jumper block
J6
J5
Sensitivity adjustment
1 2 3 4 5 6 7 8
DO NOT
tAmpeR
Discharge Air Temp Set
TIMER
R23
20 Second
10 Second
0 Second
J6 J5 J5
123
123
12
123
1 2 3 4 5 6 7 8
WIRING DIAGRAMS
A1014 model amplifiers AD1214 model amplifiers
A1014U model amplifiers
WITH OPTIONAL ROOM OVERRIDE STAT
AD1014LU model amplifier-selectors
WITH OPTIONAL ROOM OVERRIDE STAT
© 2008 Maxitrol Company, All Rights Reserved 7
5
6
7
8
4
3
2
1
A1014U
VALVE
TRANSFORMER
TS114 & MIXING TUBE
TD114 SELECTOR
T115 OVERRIDE
WITH OPTIONAL INLET AIR SENSOR
4
3
2
1
TS114 & MIXING TUBE
TD114 SELECTOR
TS10766 & MIXING TUBE
5
6
7
8
4
3AD1014U
VALVE
TRANSFORMER
TS114 & MIXING TUBE
4
3
TS114 & MIXING TUBE
TS10766 & MIXING TUBE
TS214 & MIXING TUBE
VALVE
A1014
LOW FIRE SWITCH
24 VAC20VA
#1 #2
3 4 5 6 7 8 9 10 11
1 2 3 4 5 6 7 8
TRANSFORMER
TS114& MIXING TUBE
T115 OVERRIDE
TD114 SELECTOR
VALVELOW-FIRE SWITCH
(NOT SUPPLIED BY MAXITROL)
A1014
WITH OPTIONAL INLET AIR SENSOR
WITH OPTIONAL INLET AIR SENSOR
TD114 SELECTOR
VALVE
TS114& MIXING TUBE
TS10766 & MIXING TUBE
Maxitrol Company23555 Telegraph Rd., PO Box 2230Southfield, MI 48037-2230
SEL14_MI_EN_04.2008
www.maxitrol.com©2008 Maxitrol Company
All Rights Reserved
8
M411, 511, 611 VALVE
high Fire Manifold Adjustments: 1. Disconnect wires from amplifier terminal #4 (see page 7),
this causes the valve to call for continuous high fire.2. Adjust the pressure regulator to obtain the desired manifold
pressure (7” w.c. maximum).3. Reconnect the wires to amplifier terminal #4.
Low Fire or Bypass Adjustments:1. Disconnect wire from amplifier terminal #8, this causes the
valve to call for continuous low fire.2. Remove cap (A), and turn adjusting screw (B) to desired
low fire adjustment. (Clockwise rotation reduces minimum flow rate.)
3. Replace cap (A), and reconnect wire to amplifier terminal #8.
TEMPERATURE CALIBRATION
NOTE: The components of this system are individually calibrated and are not part of a matched set. It is necessary to place an accurate temperature measuring device as near the Discharge Air Sensor as possible.
Set the Remote Temperature Selector at least 10 degrees above outside air temperatures.
VALVE ADjUSTMENTS
(See bulletin MT2035 for additional M/MR valve information)NOTE: Low fire adjustment should be checked whenever the high fire adjustment is changed.
MR 212 VALVE
high Fire Manifold Adjustments:1. Disconnect wires from amplifier terminal #4 (see page 7).
This cause the valve to call for continuous high fire.2. Remove seal cap (A), and turn regulator pressure adjust-
ing screw to obtain desired manifold pressure. (Clockwise rotation increases pressure.)
3. Reconnect the wires to amplifier terminal #4. NOTE: If low fire bypass is on maximum, the desired high fire outlet pressure may not be achieved.
Low Fire or Bypass Adjustments:1. Disconnect wire from amplifier terminal #8, this causes
valve to call for continuous low fire.2. Remove cap (B), and loosen lock screw (C). Turn (D) to
desired low fire adjustment. (Clockwise rotation reduces minimum flow rate.)
3. Tighten set screw (C), replace cap (B) and reconnect wire to amplifier terminal #8.
B
A
1
2
MODULATOR
A B
D
C