Owner's Manual
Page 1
... 4. OWNER'S GUIDE Contents Step 1. Registered Trademark • Patents Pending Copyright © 2004 Honeywell International Inc. Label Thermostat Wires ...5 Step 5. Separate Wallplate from Thermostat...5 Step 6. CT8775A,C THE DIGITAL ROUND™ NON-PROGRAMMABLE THERMOSTATS CT8775A Heat Only Thermostat (20 to 30 Vac) and CT8775C Heating-Cooling Thermostat (20 to 30 Vac) Para obtener un documento con...
... 4. OWNER'S GUIDE Contents Step 1. Registered Trademark • Patents Pending Copyright © 2004 Honeywell International Inc. Label Thermostat Wires ...5 Step 5. Separate Wallplate from Thermostat...5 Step 6. CT8775A,C THE DIGITAL ROUND™ NON-PROGRAMMABLE THERMOSTATS CT8775A Heat Only Thermostat (20 to 30 Vac) and CT8775C Heating-Cooling Thermostat (20 to 30 Vac) Para obtener un documento con...
Owner's Manual
Page 3
STEP 1. Table 1. Compatibility Chart. Not compatible with 2-wire Honeywell zone valves. plaster) 3 • Screws and wall anchors • Hammer 69-1676-1 PREPARE FOR INSTALLATION ❑ Check Table 1, the compatibility chart, to make sure the ... Air Conditioning Baseboard Electric (120/240 line volt)b Single Stage Heat Pump Multistage Heat Pumps/Multistage Equipment Compatibility with CT8775A Yes No Yesa Yes Yes No No No No No Compatibility with CT8775C Yes Yes Yesa Yes Yes No Yes No Yes No aCompatible with Taco zone valves and 2- If your system...
STEP 1. Table 1. Compatibility Chart. Not compatible with 2-wire Honeywell zone valves. plaster) 3 • Screws and wall anchors • Hammer 69-1676-1 PREPARE FOR INSTALLATION ❑ Check Table 1, the compatibility chart, to make sure the ... Air Conditioning Baseboard Electric (120/240 line volt)b Single Stage Heat Pump Multistage Heat Pumps/Multistage Equipment Compatibility with CT8775A Yes No Yesa Yes Yes No No No No No Compatibility with CT8775C Yes Yes Yesa Yes Yes No Yes No Yes No aCompatible with Taco zone valves and 2- If your system...
Owner's Manual
Page 5
... will work if an isolation relay is installed. Continue with this application. If you purchased a CT8775A thermostat, return the product to ON, the CT8775C Thermostat will only work with the old terminal designation. The CT8775A thermostat is not compatible with the installation at the right. STEP 4. As you disconnect each wire, attach the...
... will work if an isolation relay is installed. Continue with this application. If you purchased a CT8775A thermostat, return the product to ON, the CT8775C Thermostat will only work with the old terminal designation. The CT8775A thermostat is not compatible with the installation at the right. STEP 4. As you disconnect each wire, attach the...
Owner's Manual
Page 8
.... Wraparound and straight connections are both of your local R heating/air conditioning contractor. IMPORTANT Remove the factory-installed jumper connecting terminals R and Rc on the CT8775C Thermostat if wires will be connected to the labels you placed on your new thermostat. Slip each wire beneath its matching terminal. M19496 69-1676...
.... Wraparound and straight connections are both of your local R heating/air conditioning contractor. IMPORTANT Remove the factory-installed jumper connecting terminals R and Rc on the CT8775C Thermostat if wires will be connected to the labels you placed on your new thermostat. Slip each wire beneath its matching terminal. M19496 69-1676...
Owner's Manual
Page 9
... a single stage heat pump. Rc (see Note 2) W Y G O B (see Note 2) Power Description - Do not connect both Rh and R terminals on CT8775C R R (see Note 3) Do not connect. Connect O to Terminals Connect To Terminals on CT8775A on the old thermostat, remove jumper between R and Rc. 3. Do not connect. W - - - - If wires will be connected to both...
... a single stage heat pump. Rc (see Note 2) W Y G O B (see Note 2) Power Description - Do not connect both Rh and R terminals on CT8775C R R (see Note 3) Do not connect. Connect O to Terminals Connect To Terminals on CT8775A on the old thermostat, remove jumper between R and Rc. 3. Do not connect. W - - - - If wires will be connected to both...
Owner's Manual
Page 10
See Table 3. NOTE: The CT8775A,C Thermostats will provide optimal temperature control if DIP switches 1 and 2 are set the switch to your particular heating system. DIP Switch ❑ To adjust the ... cycle rate. STEP 8. See Fig. 4. FUEL SWITCH M19497 Fig. 3. The E setting allows the fan to set in the F position. CUSTOMIZE THE THERMOSTAT Set Fuel Switch (CT8775C Only) ❑ To adjust the fuel switch, locate the switch labeled E/F on the back of the thermostat. Fuel switch. The fuel switch is connected. DIP...
See Table 3. NOTE: The CT8775A,C Thermostats will provide optimal temperature control if DIP switches 1 and 2 are set the switch to your particular heating system. DIP Switch ❑ To adjust the ... cycle rate. STEP 8. See Fig. 4. FUEL SWITCH M19497 Fig. 3. The E setting allows the fan to set in the F position. CUSTOMIZE THE THERMOSTAT Set Fuel Switch (CT8775C Only) ❑ To adjust the fuel switch, locate the switch labeled E/F on the back of the thermostat. Fuel switch. The fuel switch is connected. DIP...
Owner's Manual
Page 12
...) System Switch (see Fig. 5) ❑ Fan Auto: Normal setting for improved air circulation. 69-1676-1 (CT8775C ONLY) SELECTS COOL/OFF/HEAT (CT8775C ONLY) SELECTS ON/AUTO ROOM SET SHOWS THAT THE CURRENT ROOM TEMPERATURE IS DISPLAYED DISPLAYS ROOM OR SET TEMPERATURE SHOWS THAT THE CURRENT TEMPERATURE SETTING ...
...) System Switch (see Fig. 5) ❑ Fan Auto: Normal setting for improved air circulation. 69-1676-1 (CT8775C ONLY) SELECTS COOL/OFF/HEAT (CT8775C ONLY) SELECTS ON/AUTO ROOM SET SHOWS THAT THE CURRENT ROOM TEMPERATURE IS DISPLAYED DISPLAYS ROOM OR SET TEMPERATURE SHOWS THAT THE CURRENT TEMPERATURE SETTING ...
Owner's Manual
Page 13
... for heating. CHECK OPERATION OF HEATING AND/OR COOLING SYSTEM Heating System ❑ Slide the system switch to Heat and the Fan switch to Auto (CT8775C only). ❑ Turn the dial clockwise to raise the temperature setting several degrees above the room temperature. ❑ A flame will switch to indicate the thermostat...
... for heating. CHECK OPERATION OF HEATING AND/OR COOLING SYSTEM Heating System ❑ Slide the system switch to Heat and the Fan switch to Auto (CT8775C only). ❑ Turn the dial clockwise to raise the temperature setting several degrees above the room temperature. ❑ A flame will switch to indicate the thermostat...
Owner's Manual
Page 14
Fan (CT8775C Only) ❑ Slide the system switch to Off and the fan switch to compressor or other equipment. Can cause permanent damage to On. See equipment ... The snowflake will flash during this delay. ❑ After five minutes, the thermostat will go into a five-minute delay to protect the compressor. Cooling System (CT8775C Only) CAUTION Equipment Damage Hazard. The cooling system should run continuously. ❑ Slide the Fan switch to lower the temperature setting several degrees below 50...
Fan (CT8775C Only) ❑ Slide the system switch to Off and the fan switch to compressor or other equipment. Can cause permanent damage to On. See equipment ... The snowflake will flash during this delay. ❑ After five minutes, the thermostat will go into a five-minute delay to protect the compressor. Cooling System (CT8775C Only) CAUTION Equipment Damage Hazard. The cooling system should run continuously. ❑ Slide the Fan switch to lower the temperature setting several degrees below 50...
Owner's Manual
Page 15
... settings are: (example: cannot set it to Heating does not come on or Cooling does not come on. • Set the system switch to Heat (CT8775C only). • Make sure the temperature setting is above the room temperature. • Make sure the circuit breaker is not tripped, and reset it if... sure the circuit breaker is coming from the registers. IF YOU HAVE A PROBLEM Table 5. or the cooling lower). 45 to 99°F (7 to www.honeywell.com/yourhome or call Honeywell Customer Care, toll free, at the equipment is in the On position, and set it to On if it is wired correctly.
... settings are: (example: cannot set it to Heating does not come on or Cooling does not come on. • Set the system switch to Heat (CT8775C only). • Make sure the temperature setting is above the room temperature. • Make sure the circuit breaker is not tripped, and reset it if... sure the circuit breaker is coming from the registers. IF YOU HAVE A PROBLEM Table 5. or the cooling lower). 45 to 99°F (7 to www.honeywell.com/yourhome or call Honeywell Customer Care, toll free, at the equipment is in the On position, and set it to On if it is wired correctly.