User manual HONEYWELL CT8775A

[. . . ] THE DIGITAL ROUNDTM NON-PROGRAMMABLE THERMOSTATS OWNER'S GUIDE CT8775A, C 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 español, por favor visite nuestro sitio de web a: www. honeywell. com/yourhome. Pour obtenir des notices techniques en français, veuillez consulter notre site web www. honeywell. com/yourhome. Contents Step 1. Prepare for Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Remove Old Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Turn the wallplate until the wiring holes are aligned and the two screw holes on the left and right side of the wallplate line up with the screw holes on the decorator cover plate. Attach the wallplate to the decorator cover plate with the two 3/8 in. screws. ELECTRICAL BOX DECORATOR COVER PLATE 1/2 INCH SCREW (2) WALL PLATE 3/8 INCH SCREW (2) A 1 1 IF ELECTRICAL BOX IS HORIZONTAL, MOUNT DECORATOR COVER PLATE IN POSITION SHOWN, BUT FASTEN WITH SCREWS THROUGH "A". M19494 WIRING HOLES Fig. Mount decorator cover plate (required) and wallplate onto electrical box (heating-cooling wallplate shown). 7 69-1676 STEP 7. WIRE WALLPLATE TERMINALS IMPORTANT All wiring must comply with local codes and ordinances. If unsure about household wiring procedures, call your local heating/air conditioning contractor. Refer to the labels you placed on the wires when you removed the old thermostat (see illustration). Match the letter of your old thermostat wire with the corresponding terminal letter on your new thermostat. IMPORTANT Remove the factory-installed jumper connecting terminals R and Rc on the CT8775C Thermostat if wires will be connected to both of these terminals. Slip each wire beneath its matching terminal. Wraparound and straight connections are both acceptable, (see illustration). NOTE: The CT8775A, C Thermostats will provide optimal temperature control if DIP switches 1 and 2 are set according to your particular heating system. Fig. Fuel switch. ON 123 DIP SWITCH M19567 Fig. Heating System Steam, Gravity Gas or Oil Warm Air (factory setting) Electric Warm Air In Floor Radiant Heat NOTE: Cycles Per Hour DIP Switch 1 DIP Switch 2 1 6 9 On Off Off On On On Off Off High Efficiency Warm Air (90%+ efficiency), Hot Water, Heat Pump 3 Check with manufacturer for recommended cycle rate. The cooling cycle rate does not require adjustment and therefore cannot be changed. Fahrenheit/Celsius Indication Use DIP switch 3 to set the desired temperature indication. Fahrenheit/Celsius Display Fahrenheit (factory setting) Celsius DIP Switch 3 Off On STEP 9. MOUNT THE THERMOSTAT ENGAGE TABS AT BOTTOM OF THERMOSTAT AND WALL PLATE. PRESS UPPER EDGE OF CASE TO LATCH M19498 11 69-1676 STEP 10. SET THE SYSTEM AND FAN SWITCHES (CT8775C ONLY) System Switch (see Fig. 5) Heat: The thermostat controls your heating system. Off: Both the heating and cooling systems are off. Cool: The thermostat controls your cooling system. 5) Fan Auto: Normal setting for most homes. [. . . ] PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 2 FACTORY INSTALLED JUMPER. M19451 O 2 Rc R B G Y W 1 HEATING RELAY OR VALVE COIL COMPRESSOR CONTACTOR FAN RELAY 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. M19452 69-1676 16 4 O Rc 2 R B G Y3 W O B 2 Rc R G Y W COMPRESSOR CONTACTOR 1 HEAT CHANGEOVER VALVE FAN RELAY COOL CHANGEOVER VALVE COMPRESSOR CONTACTOR 1 HEATING RELAY OR VALVE COIL FAN RELAY 1 1 POWER SUPPLY. [. . . ]