Marley Engineered Products Thermostats and Controls User Manual

Thermostats and Controls

THERMOSTATS

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-;376 Triac: Silent Operation Electronic Switch Triac: Silent Operation Microprocessor
&?8/ 12.5A Resistive 2 wire SPST 15 A Resistive 4 wire DPST 16.7A Resistive 2 wire SPST 16.7 A Resistive 4 wire DPST
)+;; $+;361 Minimum: 2 amp load No minimum load Minimum: 2 amp load No minimum load

( 1500 watts n/a 2000 watts n/a
( n/a n/a n/a 3000 watts
( 3000 watts 3600 watts 4000 watts 4000 watts

( n/a n/a n/a n/a
"347; <;? No No No No
$+61/ @  40ºF to 85ºF 40ºF to 85ºF 40ºF to 85ºF 40ºF to 85ºF

300/9/6;3+4 Accuracy: Within +/- 0.27ºF Accuracy: Within 1ºF of setpoint Accuracy: Within +/- 0.27ºF Accuracy: Within 1ºF of setpoint

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Digital, non-programmable

12.5amp model delivers ex­ceptional accuracy. Ideal for

radiant ceiling panels, and

baseboard. Not for fan-forced

heaters.

Digital, non-programmable

model delivers exceptional

accuracy. Ideal for radiant

ceiling panels, and base-

board. Can be used for fan-

forced heaters..

Digital, programmable high ca­pacity model delivers exceptional
accuracy. Ideal for radiant ceiling

panels, and baseboard. Can be

used for fan-forced heaters and re-

sistive loads.

Digital, programmable

model delivers exceptional

accuracy. Ideal for radiant

ceiling panels, and base-

board. Can be used for fan-

forced heaters.

THERMOSTATS

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-;376 Electronic Switch Electronic Switch Electronic Switch Microprocessor
&?8/ 24 volt .015 -1.0A @ 30V 2-wire 24 volt .015 -1.0A @ 30V 2-wire 24 volt .015 -1.0A @ 30V 5-wire Wall thermistor
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( n/a n/a n/a 22A
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"347; <;? 24VAC 24VAC 24VAC n/a
$+61/ @  40ºF to 90ºF 40ºF to 90ºF 40ºF to 90ºF 40ºF to 90ºF

300/9/6;3+4 Accuracy: Within 1ºF of setpoint Accuracy: Within 1ºF of setpoint Accuracy: Within 1ºF of set Accuracy Within 1ºF of setpoint

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Digital, non-programmable Digital, non-programmable

24 volt "Round" model de- 24 volt "Round" model de-

livers exceptional livers exceptional and cool thermostat. One

accuracy. (Heat Only) accuracy. (Heat and Cool) touch temperature control

Digital, 24volt programma-

ble 2 stage 5-7 wire heat

with exceptional accuracy.

Ideal for plenum heaters,

and HVAC systems.

Proportional and Integral

non-programmable elec-

tronic room sensor thermo-

stat with set point capability,

providing exceptional accu-

racy. Transmits actual tem-

perature to a LTR relay.

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Built-in heat anticipator as­sures closer control of room
temperature. These snap ac-

tion thermostats are more

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-;376 Modulation (2 stage) Simultaneous switching (double ckt) Snap Action with Heat Anticipator Creep (Hydraulic) Action
&?8/ DPST SPST DPST SPST DPST
)+;; $+;361

( 22A 22A 22A 22A
( 22A 22A 22A 22A
( 22A 22A 22A 22A

( 18A 18A 18A na
"347; <;? Yes 125VA Yes 125VA Yes 125VA No
$+61/ @  50ºF to 80ºF 50ºF to 80ºF 50ºF to 90ºF 40ºF to 85ºF

300/9/6;3+4 Accuracy: Within 3ºF of setpoint Accuracy: Within 3ºF of setpoint +/- 2 1/2ºF +/- 2ºF

/+;<9/:

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One thermostat controls two sep- Simultaneous control of two
arate heating circuits and reduces heating loads. Used where the

input during light load periods. total load slightly exceeds capac-

Second stage activates when ity of a single switch, where two

temperature drops to approx. 1 thermostats are impractical. Both

1/2ºF below the first stage turn- switches are calibrated to operate

ON temperature. at approx. the same temperature.

Line voltage thermostat with

everything; Performance, reliabil-

ity, durability, and a large knob. heat as well as air tempera-

Built-in heat anticipation assures ture for ultimate control.

close temperature regulation. May cause slight radio or
Large knob for easy rotation. television interference in

Extra-sensitive element in

control knob senses radiant

outlying fringe areas.

www.qmarkmep.com QMark Heating Products 3

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Refer to the See Note 1 See Note 2 See Note 3 See Note 4 See Note 6
Notes Section
where specified

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&2/957:;+;: ,/47> +9/ /4/-;9763- >3;2 .313;+4 .3:84+?

TH110DPP Yes Yes The electronic No See model See model Yes
TH300024 Yes Yes thermostats are not No selection selection No
TH36004 Yes Yes recommended No chart. chart. Yes
TH400024 Yes Yes for this heater No Yes
TH522D1003 No No No No

&2/957:;+;: 43:;/. ,/47> +9/ 70 5/-2+63-+4 ;?8/ +6. >+6; ;7 -76;974 ;/58/9+;<9/ :/;;361 5+6<+44?

MS26 Yes Yes See model No See model See model Yes
MD26 Yes Yes selection chart for No selection selection Yes
M601W Yes Yes the recommended Yes chart. chart. Yes
M601TPW Yes Yes thermostat Yes Yes
M602W Yes Yes No Yes
M602TPW Yes Yes No Yes
M611W Yes Yes No Yes
M612W Yes Yes No Yes
M600S These stats are used when there are two elements to control. Two-stage operation
M600MTP and modulating type. Not normally used for above products.
T100 Yes Yes See model Yes See model See model Yes
T200 Yes Yes selection chart for No selection selection Yes
WR651 Yes Yes the recommended No chart. chart. Yes
WR661 Yes Yes thermostat No Yes

&2/957:;+;: ,/47> +9/ 579/ -755/9-3+4 6.<:;93+4 +6. 67; 6795+44? <:/. 76 9/:3./6;3+4 +8843-+;376:

WT11A No Yes See model No No No No
WT12A No Yes selection chart for No No No No
WR80 Yes Yes the recommended No No No No
WR80EP No No thermostat No No No No

&2/957:;+;: ,/47> +9/ 47> =74;+1/  ;7 =74;: %// 67;/  ,/47>

T8775A1009 Yes Yes No No No No No
T8775C1005 Yes Yes No No No No No

4/-;9763- ;9+6:0795/9 9/4+?: >3;2 ,<34; 36 ;9+6:0795/9

LTR1120
LTR208240
LTR1277
LTR2240
LT186F01 Yes Yes Yes Yes Yes Yes

H S S A

† For infrared type heaters, controls may be different for the type of element used. Contact Technical Services for recommendation.
Note 1: Electronic thermostats have amperage minimums and each model has different voltage requirements, please check catalog thermostat specifications.
Note 2: AWH, CWH, LFK Series models require the removal of the internal thermostat and wire wall thermostat in its place for proper fan operation. See THERMOSTAT MODEL

SELECTION (page 6) for specific thermostat.

Note 3: CWHDSAG and CWHDS Series models require the removal of the internal thermostat from unit. Wire wall thermostat for proper fan operation. See THERMOSTAT MODEL

SELECTION (page 6) for specific thermostats.

Note 4: CRA, SED, 1235, and 2400 Series models require the removal of the internal thermostat from unit. Wire wall thermostat for proper fan operation. See THERMOSTAT MODEL

SELECTION (page 6) for specific thermostats.
Note 5: Low voltage thermostats operate in conjuction with low voltage control systems using relays. Compatible with all standard 24V two wire thermostats.
Note 6: The 1100 watt units can use either single pole or double stats. The higher wattage, 1500watt, must use a double pole stat. (3 conductors from stat to heater) See website for further

details.
Note 7: CDF and EFF Series models require different thermostats based on internal wiring. Wire wall thermostat for proper fan operation. See THERMOSTAT MODEL

SELECTION (page 6) for specific thermostats. Can not use digital thermostat with this unit.
Note 8: Due to the complexity of wiring variations for remote wall thermostats with these products, we recommend that you contact Technical Services for assistance.
Note 9: Remove internal thermostat and wire wall thermostat in its place for proper fan operation.
Note 10: Thermostat wire to the two white wires on the heater.
Note 11: Wire wall thermostats as directed in the Installation Manual for proper fan operation.

&/-263-+4 %/9=3-/: 76;+-; 60795+;376

Phone: [phone]
email: [e-mail]

QMark Heating Products www.qmarkmep.com 4

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See note 7 See note 8 See note 8

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&2/957:;+;: ,/47> +9/ /4/-;9763- >3;2 .313;+4 .3:84+?

See model Contact Yes No Contact Yes Yes † †

selection Tech Services No No Tech Services Yes Yes † †

chart. for assistance Yes No for assistance Yes Yes † †

Yes No Yes Yes † †

No Yes No No † †

&2/957:;+;: 43:;/. ,/47> +9/ 70 5/-2+63-+4 ;?8/ +6. >+6; ;7 -76;974 ;/58/9+;<9/ :/;;361 5+6<+44?

See model Contact No No Contact Yes Yes † †

selection Tech Services No No Tech Services Yes Yes † †

chart. for assistance Yes No for assistance Yes Yes † †

See model Contact Yes No Contact Yes Yes † †

selection Tech Services Yes No Tech Services Yes Yes † †

chart. for assistance No No for assistance Yes Yes † †

Yes No Yes Yes † †
Yes No Yes Yes † †
Yes No Yes Yes † †
Yes No Yes Yes † †
Yes No Yes Yes † †

No No Yes Yes † †

&2/957:;+;: ,/47> +9/ 579/ -755/9-3+4 6.<:;93+4 +6. 67; 6795+44? <:/. 76 9/:3./6;3+4 +8843-+;376:

Yes Contact Yes No Contact No Yes † †

No Tech Services Yes No Tech Services No Yes † †

Yes for assistance Yes No for assistance Yes Yes † †

No No No No No † †

&2/957:;+;: ,/47> +9/ 47> =74;+1/  ;7 =74;: %// 67;/  ,/47>

No No Yes No Yes Yes Yes † †
No No Yes Yes Yes Yes Yes † †

4/-;9763- ;9+6:0795/9 9/4+?: >3;2 ,<34; 36 ;9+6:0795/9

Yes Yes Yes No Yes Yes Yes † †

www.qmarkmep.com QMark Heating Products 5

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From Notes 2, 3, 4 and 7 (see page 4)

& $ ) 

!  & $!%& &

FRC1512 M601W
FRC3180 M601W
FRC4020 M601W
FRC4024 M601W
FRC4027 M601W
FRC3027 M601W
FRC4820 M601W
FRC4824 M601W

FRC4827 M601W
FRC40203 NA
FRC40243 NA

!& : See note 10, pg. 4.

SRA1012DSAG M601W

RA1512DSAG M601W

S
SRA1812DSAG M601W
SRA2024DSAG M601W

RA2027DSAG M601W

S

RA1527DSAG M601W

S
SRA2020DSAG M601W

!& : See note 10, pg. 4.

SRA1012DS M601W
SRA1512DS M601W
SRA1812DS M601W
SRA2024DS M601W
SRA2027DS M601W
SRA1527DS M601W
SRA2020DS M601W

!& : See note 10, pg. 4.

FRA1512 M602W

FRA1812 M602W

FRA4024 M602W

FRA4027 M602W

FRA3027 M602W

FRA4020 M602W

FRA4824 M602W

FRA4827 M602W

FRA4820 NA

!& : See note 10, pg. 4.

GFR1500 TH400024, M601W, M611W, T100, WR651

GFR2004 TH110DPP, TH400024, TH300024, M602W, M612W, T200, WR661

GFR2404 TH110DPP, TH400024, TH300024, M602W, M612W, T200, WR661

GFR1500T2 TH400024, M601W, M611W, T100, WR651
GFR2004T2 TH110DPP, TH400024, TH300024, M602W, M612W, T200, WR661

GFR2404T2 TH110DPP, TH400024, TH300024, M602W, M612W, T200, WR661
QFG1512IFM
QFG2024IFM
QFG2224IFM

QFG2228IF

QFG1512T2M
QFG2024T2M
QFG2224T2M

TH110DPP, TH400024, TH300024, M602W, M612W, T200, WR661
TH110DPP, TH400024, TH300024, M602W, M612W, T200, WR661

TH110DPP, TH400024, TH300024, M602W, M612W, T200, WR661
TH110DPP, TH400024, TH300024, M602W, M612W, T200, WR661

TH400024, M601W, M611W, T100, WR651

M602W, M612W, T200, WR661

TH400024, M601W, M611W, T100, WR651

& $ )

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!  & $!%& &

VFK151 M602W
VFK204 M602W
VFK304 M602W
VFK404 M602W
VFK484 M602W

!& : See note 10, pg. 4.

SED1012C TH400024, TH300024, M601W, M611W, T100, WR651
SED1024C TH110DPP, TH400024, TH300024, M602W, M612W, T200, WR661

SED1512 TH400024, TH300024, M601W, M611W, T100, WR651
SED2024 TH110DPP, TH400024, TH300024, M602W, M612W, T200, WR661
ECP1024 TH110DPP, TH400024, TH300024, M602W, M612W, T200, WR661

ECP1524 TH110DPP, TH400024, TH300024, M602W, M612W, T200, WR661
CRA1512IF TH400024, M601W, M611W, T100, WR651
CRA2028IF M602W, M612W, T200, WR661
CRA2024IF TH110DPP, TH400024, TH300024, M602W, M612W, T200, WR661
CRA2224IF TH110DPP, TH400024, TH300024, M602W, M612W, T200, WR661
CRA1512T2 TH400024, M601W, M611W, T100, WR651
CRA2024T2 TH110DPP, TH400024, TH300024, M602W, M612W, T200, WR661
CRA2224T2 TH110DPP, TH400024, TH300024, M602W, M612W, T200, WR661

1235 TH400024, M601W, M611W, T100, WR651

1235P TH400024, M601W, M611W, T100, WR651

2435 TH110DPP, TH400024, TH300024, M602W, M612W, T200, WR661

2435P TH110DPP, TH400024, TH300024, M602W, M612W, T200, WR661
FFCH548 MS26, M601W
FFCH542 TH400024, MS26, M601W
FFCH547 MS26, M601W
FFCH558 MS26, M601W
FFCH552 MS26, M601W
FFCH557 MS26, M601W

!& : See note 11, pg. 4.

QFF1500 TH400024, MS26, M601W
QFF3007 MS26, M601W
QFF4008 MS26, M601W
QFF4004 TH400024, MS26, M601W
QFF4007 MS26, M601W
QFF4804 MS26, M601W
QFF4807 MS26, M601W

!& : See note 12, pg. 4.

QCH1101 TH400024, TH300024, M601W, MS26
QCH1151 TH400024, M601W, MS26
QCH1202 TH400024, TH300024, M601W, MS26
QCH1207 TH400024, TH300024, M601W, MS26

!& : See note 12, pg. 4.

QMark Heating Products www.qmarkmep.com 6

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CAT. NO. VOLT AMPS

L R1120 120 22A
L R208240 208/240 22A
L R1277 277 19A

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-;376 Snap Action Switch Snap Action Switch Positive snap action switch Electronic Relays

&?8/ SPST SPST SPDT Microprocessor base design

58 $+;361

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"347; <;? Yes 125VA Yes 125VA Yes 125VA
$+61/ @  40ºF to 90ºF 40ºF to 90ºF 40ºF to 110ºF

300/9/6;3+4 +/- 3ºF +/- 3ºF +/- 2 1/2ºF

/+;<9/:

Rugged design for garages,

factories, warehouses and sim-

ilar commercial and industrial

installations. The WR80 can

control several heaters by

using an external contactor.

25A
22A
22A
18A

25A
22A
22A
18A

This explosion proof room

thermostat is suitable for Class

1, Group D and Class II,

Groups E, F, and G locations.

The control has a SPDT output and

Nema 4X rated
25A n/a

25A
25A
22A

Nema 4X weatherproof enclosure.

can be used for heating or cooling

(ventilation) Multi-positional

mounting offers flexibility in new

or existing installations.

These electronic relays have been
designed for silent control of high
voltage resistive loads from a low

voltage control circuit. Inductive

motor loads can also be controlled

(120V to 240V only). Compatible
with 24V thermostats and accepts

analog signal of 0-10V DC.

The relays can be used with model
LT186F01 electronic room sensor,

providing proportional and inte-

gral control. Also can be tied to

building management systems.

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-;376 Dual Silent Relay
&?8/ 2 single pole switches.
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( N/A
( 25A 1HP, 8.8A
( 25A 1HP, 8A

( N/A
"347; <;? Yes 125VA
$+61/ @  Can be operate in 20 to 140ºF

300/9/6;3+4 Accuracy: Within 1.5ºF of setpoint

/+;<9/:

www.qmarkmep.com QMark Heating Products 7

This dual level temperature
relay may be used to operate
two separate heating loads by

means of a single low voltage
thermostat. Relay is mounted

in an enclosure.

Enclosure protection for thermostats.

Material: Impact resistant poly-

carbonate. Clear. Dimensions

are: 7"L X 4.28"H X 2.75" D

Thermostat enclosure kits are de-

signed to protect the thermostat.

Circulating slots allow airflow

for proper operation. Guards are

lockable and a key is provided to

maintain security.

M600THW -White thermostat

cover with built-in thermome-

ter. For M600 Series stats.

M600THB - Beige thermostat
cover with built-in thermome-

ter. For M600 Series stats.

Minimum 50pcs

Allow 4 weeks.

-ZBR QSTAT 10/11 www.qmarkmep.com