Heat Only: Gas or Oil Furnace

Compatible models: All P200 & S200

1: G USED FOR INDEPENDENT FAN CONTROL ONLY. (MOST HEAT ONLY, GAS OR OIL FORCED AIR SYSTEMS DO NOT USE A FAN [G] WIRE)

Cool Only

Compatible models: All P200 & S200

Hot Water Boiler, Heat Only

Compatible models: All P200 & S200

1H/1C: Gas Furnace

Compatible models: All P200 & S200

2 Transformer System, 1H/1C: Oil Furnace with Air Conditioning

Compatible models: All P200 & S200

2 Transformer System, Hot Water Heat with Air Conditioning (or Hot Water Coil)

Compatible models: All P200 & S200

2H/1C: Gas Furnace

Compatible model: TH2320 models only

2H/2C: Gas Furnace

Compatible model: TH2320 models only

Hot Water Heat with Power Open Zone Valve

Compatible models: All P200 & S200

Hot Water Heat with Power Open/Power Closed Series 20 Zone Valve

Compatible models: All P200 & S200

1: THERMOSTAT MUST BE CONFIGURED FOR RADIANT HEAT WITH 0 (ZERO) COOL STAGES

1H/1C: Heat Pump without Aux Heat

Compatible models: All P200 & S200

1: L ONLY CONNECTED IF HEAT PUMP HAS A FAULT TERMINAL

2: SOME HEAT PUMPS USE B RATHER THAN O FOR REVERSING VALVE

3: IMPORTANT: DO NOT CONNECT ANY WIRE TO W FOR HEAT PUMP APPLICATIONS! THIS CAN CAUSE HEAT TO RUN CONTINUOUSLY

2H/1C: Heat Pump with Electric Aux Heat

Compatible models: All TH2320 models only

1: L IS ONLY CONNECTED IF HEAT PUMP HAS A FAULT TERMINAL

2: SOME HEAT PUMPS USE B RATHER THAN O FOR REVERSING VALVE

3: DIFFERENT HEAT PUMP MODELS MAY LABEL THE AUXILIARY HEAT TERMINAL DIFFERENTLY THAN SHOWN. CONSULT HEAT PUMP WIRING GUIDE

4: C7089U1006 WIRED OUTDOOR SENSOR CAN BE USED FOR BALANCE POINT AND AUX HEAT LOCKOUT IF DESIRED

5: MOST HEAT PUMPS SHARE THE SAME SET OF HEAT STRIPS FOR AUX AND EM HEAT. IN THESE CASES, E IS NOT USED. TH2320 MODELS CAN BE CONFIGURED FOR SEPARATE AUX AND E. IN THIS SITUATION, WIRE ONE SET OF STRIPS TO E TO BE ENERGIZED IN EM HEAT AND A DIFFERENT SET OF STRIPS TO AUX TO BE ENERGIZED IN AUX HEAT.

6: IMPORTANT: DO NOT CONNECT ANY WIRE TO W FOR HEAT PUMP APPLICATIONS! THIS CAN CAUSE HEAT TO RUN CONTINUOUSLY.

3H/2C: Heat Pump with Electric Aux Heat

Compatible models: TH2320 models only

1: L ONLY CONNECTED IF HEAT PUMP HAS A FAULT TERMINAL.

2: SOME HEAT PUMPS USE B RATHER THAN O FOR REVERSING VALVE.

3: DIFFERENT HEAT PUMP MODELS LABEL THE AUXILIARY HEAT TERMINAL DIFFERENTLY THAN SHOWN. CONSULT HEAT PUMP WIRING GUIDE.

4: C7089U1006 WIRED OUTDOOR SENSOR CAN BE USED FOR BALANCE POINT AND AUX HEAT LOCKOUT IF DESIRED.

5: MOST HEAT PUMPS SHARE THE SAME SET OF HEAT STRIPS FOR AUX AND EM HEAT. IN THESE CASES, E IS NOT USED. TH2320 MODELS CAN BE CONFIGURED FOR SEPARATE AUX AND E. IN THIS SITUATION, WIRE ONE SET OF STRIPS TO E TO BE ENERGIZED IN EM HEAT AND A DIFFERENT SET OF STRIPS TO AUX TO BE ENERGIZED IN AUX HEAT.

6: IMPORTANT: DO NOT CONNECT ANY WIRE TO W FOR HEAT PUMP APPLICATIONS! THIS CAN CAUSE HEAT TO RUN CONTINUOUSLY.

Dual Fuel, 2H/1C: Heat Pump

Compatible models: TH2320 models only

1: L ONLY CONNECTED IF HEAT PUMP HAS A FAULT TERMINAL.

2: SOME HEAT PUMPS USE B RATHER THAN O FOR REVERSING VALVE.

3: THE HEAT PUMP AND FURNACE HAVE SEPARATE BOARDS. THEY ARE SHOWN TOGETHER HERE TO SIMPLIFY THIS DIAGRAM. W IS FROM THE FURNACE BOARD.

4: C7089U1006 WIRED OUTDOOR SENSOR CAN BE USED FOR BALANCE POINT IF DESIRED.

5: IMPORTANT: DO NOT CONNECT ANY WIRE TO W FOR HEAT PUMP APPLICATIONS! THIS CAN CAUSE HEAT TO RUN CONTINUOUSLY.

Dual Fuel 3H/2C: Heat Pump

Compatible models: TH2320 models only

1: L ONLY CONNECTED IF HEAT PUMP HAS A FAULT TERMINAL.

2: SOME HEAT PUMPS USE B RATHER THAN O FOR REVERSING VALVE.

3: THE HEAT PUMP AND FURNACE HAVE SEPARATE BOARDS. THEY ARE SHOWN TOGETHER HERE TO SIMPLIFY THIS DIAGRAM. W IS FROM THE FURNACE BOARD.

4: C7089U1006 WIRED OUTDOOR SENSOR CAN BE USED FOR BALANCE POINT IF DESIRED.

5: IMPORTANT: DO NOT CONNECT ANY WIRE TO W FOR HEAT PUMP APPLICATIONS! THIS CAN CAUSE HEAT TO RUN CONTINUOUSLY.