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2 Heat/1 Cool

Manual Changeover

Hardwired

SC 2311

Non-Programmable Electronic Thermostat

Installation, Operation & Application Guide

For more information on our complete range of American-made
products – plus wiring diagrams, troubleshooting tips and more,
visit us at

www.icmcontrols.com

• Configurable
• 2-Stage Heat/1-Stage Cool Systems
• Heat Pump Systems
• Backlit Display
• Field Temperature Calibration
• Filter Check
• Status Indicator Light
• Relay Outputs

(minimum voltage drop in thermostat)

• Ideally Suited for:

–

Residential (New Construction/Replacement)

–

Light Commercial

Содержание SC 2311

Страница 1: ...American made products plus wiring diagrams troubleshooting tips and more visit us at www icmcontrols com Configurable 2 Stage Heat 1 Stage Cool Systems Heat Pump Systems Backlit Display Field Temperature Calibration Filter Check Status Indicator Light Relay Outputs minimum voltage drop in thermostat Ideally Suited for Residential New Construction Replacement Light Commercial ...

Страница 2: ...Contents Tools Required 2 To Remove Existing Thermostat 3 To Install Thermostat 3 Terminal Designator Descriptions 5 SC2311 Output Chart 5 Wiring Diagrams 6 Wiring Diagram Conversions 9 Configuration Mode 19 Testing the Thermostat 22 Mode of Operation 23 Operating Modes 24 Troubleshooting 25 ...

Страница 3: ... Parts Diagram R12 W1 O B Y W2 E ...

Страница 4: ...pplications only do not use on voltages over 30 VAC Do not short across terminals of gas valve or system control to test operation this will damage your thermostat and void your warranty All wiring must conform to local and national electrical and building codes Do not use air conditioning when the outdoor temperature is below 50 degrees this can damage your A C system and cause personal injuries ...

Страница 5: ...om wall 6 Refer to the following section for instructions on how to install this thermostat To Remove Existing Thermostat ELECTRICAL SHOCK HAZARD Turn off power at the main service panel by removing the fuse or switching the appropriate circuit breaker to the OFF position before removing the existing thermostat IMPORTANT Thermostat installation must conform to local and national building and elect...

Страница 6: ...g holes and feed the control wires through wire opening 9 Use supplied screws to mount thermostat base to wall 10 Insert stripped labeled wires in matching wire terminals See Wiring Diagrams section of this manual Pages 6 18 CAUTION Be sure exposed portion of wires does not touch other wires 11 Tighten screws on terminal block Gently tug wire to be sure of proper connection Double check that each ...

Страница 7: ...e heat for Emergency Heat operation G Fan Terminal Designator Descriptions The SC2311 thermostat is configurable for different systems The configuration directly effects the outputs Use the output chart to correctly configure and wire the thermostat to your system 1ST Cool 1ST Heat 2ND Heat Heat Cool Y G W1 G W1 W2 G Heat Pump One Compressor Y G O Y G B Y W2 G B Emergency Heat HP N A E G E W2 G G ...

Страница 8: ... First Cooling Control Second Heating Control First Cooling Control First Heating Control Wiring Diagrams Fan Control Fan Control ...

Страница 9: ... Second Heating Control First Heating Control Second Heating Control First Heating Control Single Transformer Single Transformer Fan Control ...

Страница 10: ... Single Compressor 2nd Stage Heat Reversing Valve Compressor Emergency Heat Fan Control ...

Страница 11: ...rn 24 VAC common Reversing valve cooling mode Compressor contactor 2nd stage heating circuit Fan contactor circuit Emergency heating circuit System monitor LED capped Note 1 L terminal on PCB capped Note 2 W3 terminal on PCB capped R C W1 O B Y W2 E G R C O Y W2 G E L W3 Carrier Split System Low Voltage Terminal Board capped Wiring Diagram Conversions ...

Страница 12: ...0 Low Voltage Terminal Board SC 231 1 Electronic Thermostat 24 VAC return 24 VAC common Reversing valve cooling mode Compressor contactor 2nd stage heating circuit Fan contactor circuit Emergency heating circuit System monitor LED capped Note 1 L terminal on PCB capped Note 2 W3 terminal on PCB capped R C W1 O B Y W2 E G capped ...

Страница 13: ...ostat R C W1 O B Y W2 E G 24 VAC return 24 VAC common Reversing valve cooling mode Compressor contactor 2nd stage heating circuit Fan contactor circuit Outdoor thermostat Defrost sensor capped capped Note 1 W2 terminal on PCB capped Note 2 X terminal on PCB capped R C O Y W1 G W2 X ComfortMaker CYC Low Voltage Terminal Board ...

Страница 14: ...Electronic Thermostat R C W1 O B Y W2 E G 24 VAC return 24 VAC common Reversing valve cooling mode Compressor contactor 2nd stage heating circuit sequencer 1 Fan contactor circuit 3rd stage heating circuit sequencer 2 R C O Y W1 G W2 Heil Quaker 867 814 and PH50 Low Voltage Terminal Board Note 1 W2 terminal on PCB capped capped ...

Страница 15: ...2 E G 24 VAC return 24 VAC common Reversing valve cooling mode Compressor contactor 2nd stage heating circuit Fan contactor circuit Emergency heating circuit System monitor LED capped Note 1 L terminal on PCB capped Note 2 W3 terminal on PCB capped R C O Y W2 G E L W3 Payne Reliant and Endura Low Voltage Terminal Board 3rd stage heating circuit capped ...

Страница 16: ...urn 24 VAC common Reversing valve heating mode Compressor contactor 2nd stage heating circuit Fan contactor circuit Emergency heating circuit System monitor LED Note 1 L terminal on PCB capped R X B Y W2 G E L Rheem Ruud PGB PFA PCB PLA and PKA Low Voltage Terminal Board SC 231 1 Electronic Thermostat R C W1 O B Y W2 E G capped ...

Страница 17: ...onic Thermostat R C W1 O B Y W2 E G 24 VAC return 24 VAC common Reversing valve cooling mode Compressor contactor 2nd stage heating circuit Fan contactor circuit capped capped Note 1 X2 terminal on PCB capped Note 2 T terminal on PCB capped R B O Y W U G X2 T Goodman Janitrol Trane American Standard Low Voltage Terminal Board ...

Страница 18: ... SC 231 1 Electronic Thermostat R C W1 O B Y W2 E G 24 VAC return 24 VAC common Reversing valve cooling mode Compressor contactor 2nd stage heating circuit Fan contactor circuit System monitor LED capped Note 1 X terminal on PCB capped R B O Y W G X York E1CS E1FB E1FH Low Voltage Terminal Board ...

Страница 19: ...tronic Thermostat R C W1 O B Y W2 E G 24 VAC return 24 VAC common Reversing valve cooling mode Compressor contactor 2nd stage heating circuit Fan contactor circuit Emergency heating circuit System monitor LED capped Note 1 L terminal on PCB capped R C O Y W1 G E L Lennox CB19 Low Voltage Terminal Board ...

Страница 20: ...p Systems SC 231 1 Electronic Thermostat R C W1 O B Y W2 E G 24 VAC return 24 VAC common Reversing valve cooling mode Compressor contactor 2nd stage heating circuit sequencer 1 Fan contactor circuit Emergency heating circuit V VR X R M Y F E Lennox HP19 and HP20 Low Voltage Terminal Board ...

Страница 21: ... return you to the previous screen 5 To exit configuration mode slide the Mode switch to Heat or Cool Configuration Mode Settings The twelve 12 setup screens for Configuration Mode are as follows 1 Heat Pump and Non Heat Pump Press the or button to configure as heat pump or non heat pump system For heat pumps there will be an anti short cycle delay for heating and cooling 1 Heat pump system 0 Non ...

Страница 22: ... B Active Appears for heat pump systems only Change between o O Active and b B Active Press the or button to set reversing valve setting Press the SW6 button to advance to the next screen FILTER DIFF ROOM SET REMOTE 6 2nd Stage Temperature Differential 1 F to 6 F 0 5 C to 3 0 C Set the number of degrees between when stage 1 turns on and when stage 2 turns on Press the or button to set differential...

Страница 23: ... 6 as many as needed and 2 6 maximum cycles hour Press the or button to select Press the SW6 button to advance to the next screen 12 Status Indicator Light Lt 0 1 2 0 Status indicator never on 1 Status indicator on with first stage 2 Status indicator on with second stage Press the or button to select Note Red light indicates heating cycle and green light indicates cooling cycle Slide the Mode swit...

Страница 24: ...to protect the compressor after it turns off To temporarily bypass the five minute delay slide the Mode switch to OFF for 2 seconds and then back to Cool Heat Test 1 Slide Mode switch to Heat mode 2 Adjust the set temperature so it is 5 degrees above the room temperature 3 Heat should come on within a few seconds Status indicator may come on 4 Adjust the set temperature so it is 2 degrees below th...

Страница 25: ...ompressor come on for five minutes after it turns off This protects your compressor When the room temperature is greater than the cool set temperature by the differential temperature the cooling device is activated The cool output is turned off as the room temperature drops The thermostat will not let the compressor come on for five minutes after it turns off This protects your compressor The SC23...

Страница 26: ... the compressor Heat Mode In heat mode the thermostat controls the heating system For heat pumps there is a five minute time delay after the compressor turns off This protects the compressor Emergency Heat Mode Heat pump systems only In emergency heat mode the heat pump system will be disabled and auxiliary heat will become the primary source of heat ENTER Emergency heat mode by pressing the up bu...

Страница 27: ...on calibrate thermostat see Configuration Mode Setting 9 Page 21 ROOM displays Room temperature offset is not zero see Configuration Mode Setting 9 Page 21 Status indicator Green light Cooling operation Red light Heating operating Status indicator option ON see Configuration Mode Setting 12 Page 21 filter displays Fan run time has exceeded filter check time set in configuration see Configuration M...

Страница 28: ...er to permit the Seller to properly administer the warranty the Buyer shall 1 Notify the Seller promptly of any claim submitting date code information or any other pertinent data as requested by the Seller 2 Permit the Seller to inspect and test the product claimed to be defective Items claimed to be defective and are determined by Seller to be non defective are subject to a 30 00 per hour inspect...

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