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

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"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.

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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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$+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

sensitive that

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-;376 Modulation (2 stage) Simultaneous switching (double ckt) Snap Action with Heat Anticipator Creep (Hydraulic) Action
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( 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

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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