Carrier P374-1100 Page 6 Installation Instructions Manual Download

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Sample Wiring Diagrams

Thermostat

Page 5

24 vac common

24 vac return

fan relay

compressor relay

1st stage heat circuit

24 vac return

fan relay

compressor relay

1st stage heat circuit

5 Wire, 1 Stage Cooling, 1 Stage Gas Heat

4 Wire, 1 Stage Cooling, 1 Stage Gas Heat

Residential Gas or Electric Heat

Electric Cool, split systems & package
units

Residential Gas or Electric Heat

Electric Cool, split systems & package
units

If using electric heat this option must be

selected on during advanced setup.

If using electric heat this option must be

selected on during advanced setup.

Summary of Contents for P374-1100

Page 1: ... 67 70 HEAT COOL AUTO o o Am 6 03 68 Su Installation Instructions TSTATCCPS701 TSTATBBPS701 P374 1100 Digital Thermostat NOTE Read the entire instruction manual before starting the installation Form IM TSTAT 12 Cancels Printed in U S A Catalog No 13TS TA38 ...

Page 2: ...ONDITIONER BEFORE REMOVING THE OLD THERMOSTAT AND INSTALLING THE NEW THERMOSTAT WARNING 2 3 4 5 8 10 9 This device complies with Part 15 of the FCC rules Operation is subject to the following 2 conditions 1 This device may not cause harmful interference and 2 This device must accept any interference received including interference that may cause undesired operation Replacement Components Division ...

Page 3: ...sure your Heater Air Conditioner is working properly before beginning installation of the thermostat Carefully unpack the thermostat Save the screws bracket and instructions STEP 1 PREPARATION Page 2 Turn off the power to the Heating Air Conditioning system at the main fuse panel Most residential systems have a separate breaker for disconnecting power to the furnace Flat Blade Screwdriver Wire cut...

Page 4: ...the wall and lift away Disconnect the wires from the old thermostat Tape the ends of the wires as you disconnect them and mark them with the letter of the terminal for easy reconnection to the new thermostat STEP 2 REMOVE REPLACE OLD THERMOSTAT Page 3 Keep the old thermostat for reference purposes until your new thermostat is functioning properly ...

Page 5: ... used if your system is a Heat Pump Wire from the old thermostat terminal marked Function Install on the new thermostat connector marked G or F Fan G Y1 Y or C Cooling Y1 W1 W or H Heating W1 O B W1 O B Power Rh R M Vr A R C O B C Common Rev Valve Y2 Y2 W2 W2 2nd Stage Cool 2nd Stage Heat RS 5 RS 5 Remote Sensor 5vdc RS RS Remote Sensor Signal RS G GND Remote Sensor Ground CK1 CK2 Dry Contact Swit...

Page 6: ...fan relay compressor relay 1st stage heat circuit 5 Wire 1 Stage Cooling 1 Stage Gas Heat 4 Wire 1 Stage Cooling 1 Stage Gas Heat Residential Gas or Electric Heat Electric Cool split systems package units Residential Gas or Electric Heat Electric Cool split systems package units If using electric heat this option must be selected on during advanced setup If using electric heat this option must be ...

Page 7: ... Y1 Y2 W1 W2 O 24 vac common 24 vac return fan relay compressor relay 1st stage heat circuit 2nd stage heat circuit Residential 2 Stage Cooling with Gas or Electric Heat Residential commercial 1 Stage Cooling with 2 Stage Gas or Electric Heat 6 Wire 2 Stage Cooling 1 Stage Heat 6 Wire 1 Stage Cooling 2 Stage Heat Thermostat Thermostat If using electric heat this option must be selected during adva...

Page 8: ... Commercial Gas or Electric Heat Electric Cool split systems package units including Commercial Heat Pumps No auxiliary heat residential Heat Pumps split systems package units 7 Wire 2 Stage Cooling 2 Stage Heat 5 Wire 1 Stage Cooling 1 Stage Heat Heat Pump Thermostat Thermostat If using residential heat pump this option must be selected on during advanced setup Commercial heat pumps do not have t...

Page 9: ...Every thermostat is calibrated before it leaves the factory Under normal circumstances there will never be a need to recalibrate the thermostat again To accommodate special needs the thermostat may be recalibrated following these steps 1 While holding the mode button in press the fan button for 5 seconds After all the icons in the display appear release the buttons 2 Press the Up and Down arrow bu...

Page 10: ...ppears on the display Press the Up or Down buttons until the set temperature is 10 degrees below room temperature The air conditioner should turn on NOTE Most equipment has a time delay of 5 minutes between cool cycles This feature is defeatable on the thermostat Consult the Owner s Manual under Setup cycles per hour Turn the power on to the Heating Air Conditioning system Press the MODE button to...

Page 11: ... SYMPTOM The air conditioning does not attempt to turn on CAUSE The compressor timer lockout may prevent the air conditioner from turning on for a period of time REMEDY Consult the Owner s Manual in the Setup section to defeat the cycles per hour and compressor timeguard SYMPTOM The display is blank CAUSE Lack of proper power REMEDY Make sure power is turned on to the furnace and 24vac between R W...

Page 12: ...g setpoint is set too high REMEDY Consult the Owner s Manual in the Setup section to lower the cooling setpoint limit SYMPTOM The heating does not attempt to turn on CAUSE The heating setpoint is set too low REMEDY Consult the Owner s Manual in the Setup section to raise the heating setpoint limit ...

Page 13: ...LESHOOTING Page 12 SYMPTOM When calling for cooling both the heat and cool come on CAUSE The Advanced Setup is configured to control a heat pump and the hvac the thermostat is controlling is a conventional non heat pump system REMEDY Consult the Owner s Manual in the Advanced Setup section to turn off the heat pump P N 88 172 4Z95 C c F FOR HOME OR OFFICE USE Tested to Comply with FCC Standards Sl...

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Carrier P374-1100, Installation Instructions Manual

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