Owner's Manual
Page 1
... Step 11. All Rights Reserved 69-1676-1 Registered Trademark • Patents Pending Copyright © 2004 Honeywell International Inc. Special Installations...4 Step 4. 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 las instrucciones en...
... Step 11. All Rights Reserved 69-1676-1 Registered Trademark • Patents Pending Copyright © 2004 Honeywell International Inc. Special Installations...4 Step 4. 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 las instrucciones en...
Owner's Manual
Page 3
...). drywall, 7/32 in . PREPARE FOR INSTALLATION ❑ Check Table 1, the compatibility chart, to make sure the thermostat is not compatible, call Honeywell Customer Care, toll-free, 1-800-468-1502. b Not compatible with Taco zone valves and 2- Table 1. Package Contents • Thermostat •... 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 your system is compatible with 2-wire Honeywell zone valves. plaster) 3 • ...
...). drywall, 7/32 in . PREPARE FOR INSTALLATION ❑ Check Table 1, the compatibility chart, to make sure the thermostat is not compatible, call Honeywell Customer Care, toll-free, 1-800-468-1502. b Not compatible with Taco zone valves and 2- Table 1. Package Contents • Thermostat •... 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 your system is compatible with 2-wire Honeywell zone valves. plaster) 3 • ...
Owner's Manual
Page 5
...THERMOSTAT WIRES ❑ Disconnect the wires from thermostat. As you disconnect each wire, attach the enclosed labels with this application. If you purchased a CT8775A thermostat, return the product to the wall, see Fig. 1. ❑ To mount onto an electrical box, see Fig. 2. 5 M19492 69...10065; Remove cover from the old thermostat. Separate the wallplate from the thermostat by setting the thermostat fan switch to ON, the CT8775C Thermostat will only work with the installation at the right. See the illustration at Step 4. STEP 4. Replacing a thermostat that is ...
...THERMOSTAT WIRES ❑ Disconnect the wires from thermostat. As you disconnect each wire, attach the enclosed labels with this application. If you purchased a CT8775A thermostat, return the product to the wall, see Fig. 1. ❑ To mount onto an electrical box, see Fig. 2. 5 M19492 69...10065; Remove cover from the old thermostat. Separate the wallplate from the thermostat by setting the thermostat fan switch to ON, the CT8775C Thermostat will only work with the installation at the right. See the illustration at Step 4. STEP 4. Replacing a thermostat that is ...
Owner's Manual
Page 8
... (see illustration). STEP 7. If unsure about household wiring procedures, call your new thermostat. 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 local R heating/air conditioning contractor. Tighten the terminals. ❑ Plug the hole...
... (see illustration). STEP 7. If unsure about household wiring procedures, call your new thermostat. 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 local R heating/air conditioning contractor. Tighten the terminals. ❑ Plug the hole...
Owner's Manual
Page 9
.... installation. Call 1-800468-1502. If wires were connected to both O and B when wiring to Terminals Connect To Terminals on CT8775A on Old and New Thermostats. Do not connect both Rh and R terminals on the old thermostat, remove jumper between R and Rc...off wire with electri- Rc (see Note 2) W Y G O B (see Note 3) W2, H2 Y2 Connect to a single stage heat pump. Terminal Designations on CT8775C R R (see Note 2) Power Description - Power for cooling Heat Cooling Fan Changeover in heat. (Single stage heat pump only). Terminal on Old Thermostat R Rh (see...
.... installation. Call 1-800468-1502. If wires were connected to both O and B when wiring to Terminals Connect To Terminals on CT8775A on Old and New Thermostats. Do not connect both Rh and R terminals on the old thermostat, remove jumper between R and Rc...off wire with electri- Rc (see Note 2) W Y G O B (see Note 3) W2, H2 Y2 Connect to a single stage heat pump. Terminal Designations on CT8775C R R (see Note 2) Power Description - Power for cooling Heat Cooling Fan Changeover in heat. (Single stage heat pump only). Terminal on Old Thermostat R Rh (see...
Owner's Manual
Page 10
... This is the correct setting for gas or oil systems. If you have an electric heat system, or a heat pump, set according to E. 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. Set Heat Cycle Rate ❑ Use...the Fahrenheit/Celsius indication, locate DIP switch 1, 2 and 3 on the wallplate (see Fig. 3). The fuel switch is connected. 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.
... This is the correct setting for gas or oil systems. If you have an electric heat system, or a heat pump, set according to E. 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. Set Heat Cycle Rate ❑ Use...the Fahrenheit/Celsius indication, locate DIP switch 1, 2 and 3 on the wallplate (see Fig. 3). The fuel switch is connected. 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.
Owner's Manual
Page 12
... runs continuously. CT8775 Thermostat (features and operation). 12 SET THE SYSTEM AND FAN SWITCHES (CT8775C ONLY) 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...
... runs continuously. CT8775 Thermostat (features and operation). 12 SET THE SYSTEM AND FAN SWITCHES (CT8775C ONLY) 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...
Owner's Manual
Page 13
... is displayed. 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 appear in memory. OPERATING THE...
... is displayed. 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 appear in memory. OPERATING THE...
Owner's Manual
Page 14
.... 69-1676-1 14 The cooling system should run continuously. ❑ Slide the Fan switch to compressor or other equipment. Cooling System (CT8775C Only) CAUTION Equipment Damage Hazard. Can cause permanent damage to Auto. The snowflake will flash during this delay. ❑ After five minutes...setting several degrees below 50°F (10°C). Do not operate cooling when outside temperature is below the room temperature. Fan (CT8775C Only) ❑ Slide the system switch to Off and the fan switch to protect the compressor. Allow compressor to indicate the thermostat...
.... 69-1676-1 14 The cooling system should run continuously. ❑ Slide the Fan switch to compressor or other equipment. Cooling System (CT8775C Only) CAUTION Equipment Damage Hazard. Can cause permanent damage to Auto. The snowflake will flash during this delay. ❑ After five minutes...setting several degrees below 50°F (10°C). Do not operate cooling when outside temperature is below the room temperature. Fan (CT8775C Only) ❑ Slide the system switch to Off and the fan switch to protect the compressor. Allow compressor to indicate the thermostat...
Owner's Manual
Page 15
...coming from the registers. If all of heating/cooling system (example: Gas, oil, or electric; For additional information, go to www.honeywell.com/yourhome or call Honeywell Customer Care, toll free, at the equipment is below model number). • Type of this thermostat. Cooling does not come on... Make sure the power switch at 1-800-468-1502. Customer Assistance Please read and follow the provided instructions for the system to Cool (CT8775C only). • Make sure the temperature setting is in the Off position. • Wait five minutes for this has been checked, ...
...coming from the registers. If all of heating/cooling system (example: Gas, oil, or electric; For additional information, go to www.honeywell.com/yourhome or call Honeywell Customer Care, toll free, at the equipment is below model number). • Type of this thermostat. Cooling does not come on... Make sure the power switch at 1-800-468-1502. Customer Assistance Please read and follow the provided instructions for the system to Cool (CT8775C only). • Make sure the temperature setting is in the Off position. • Wait five minutes for this has been checked, ...