User manual HONEYWELL CT87B

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Manual abstract: user guide HONEYWELL CT87B

Detailed instructions for use are in the User's Guide.

[. . . ] · These Installation Instructions and the Installation Quick Guide. Gather these tools: Required Tools · Flat blade screwdriver · Spirit level Optional Tools · Hand or power drill with 1/16-in. drill bit · Wire cutter/stripper or sharp knife · Pencil 3 Remove the old thermostat 1. Turn off power to the heating/cooling system at the main fuse/circuit breaker panel. [. . . ] Place the cover ring against the outlet box so that the arrow in the middle of the cover ring is pointing up. Pull the wires through the wiring hole on the bottom left side of the cover ring. Align the screw slots on the cover ring with the outlet box screw holes, and attach the cover ring to the outlet box with two 1/2-in. Place the wallplate or subbase over the cover ring so that the wiring holes line up, and pull the wires through. Loosely attach the wallplate/subbase to the cover ring with two 1/4in. screws, through the screw holes on the left and right sides of the wallplate/subbase. 5 Level the wallplate or subbase IMPORTANT: The wallplate/subbase must be level to maintain accurate thermostat temperature. Rotate the wallplate/subbase until level as shown in Fig. To level the subbase, use the leveling posts directly below the Heat and Fan indicators. Fig. Leveling the wallplate. SPIRIT LEVEL LEVELING POSTS (2) OPENING FOR THERMOSTAT WIRING MOUNTING SLOTS M3319A 2. Tighten the mounting screws after making sure that the wallplate or subbase is level. 5 69-0274-6 CT87A, B, J ROUND® THERMOSTAT 6 Wire the thermostat 1. Use the wiring cross-reference table below to match each old thermostat wire with its corresponding terminal on the CT87 wallplate or subbase. 8 through 13 wiring diagrams. Wiring Cross-reference Wire Label R, RH, 4, V Rc, R W, W1, H Y, Y1, M G, F B O See Fig. 9 W Y Connect to CT87A R Connect to CT87B RH Rc W Y G W Y G B* O* P Connect to CT87J R *Never attach wires to both the B and O terminals. Strip the wire insulation as needed to fit the wires underneath the terminal screws (Fig. Fitting wires under the terminal screws. FOR STRAIGHT CONNECTION-- STRIP 5/16 in. [8 mm] FOR WRAPAROUND CONNECTION-- STRIP 7/16 in. Loosen the terminal screws and slip each wire beneath its matching terminal. Push any excess wire back into the wall. 69-0274-6 6 CT87A, B, J ROUND® THERMOSTAT Fig. CT87A for a 2-wire heating only system. CT87A WALLPLATE POWER R Y W HEAT M20183 TO SYSTEM Fig. CT87A for a 3-wire hot water heating only system. CT87A WALLPLATE WIRE LABELS (LETTERS ON ORIGINAL THERMOSTAT TERMINALS) R R W Y W B M20184 3-WIRE HOT WATER ZONE VALVE Fig. CT87B for a 4-wire heating/cooling system. CT87B SUBBASE OF F· A HE T FA NO N POWER AU · COO L· FAN COOL TO SYSTEM TO RH G RC Y W HEAT JUMPER RH TO RC M20185 7 69-0274-6 CT87A, B, J ROUND® THERMOSTAT Fig. CT87B for a 5-wire heating/cooling system. CT87B SUBBASE OF F· HE AT FA NO N HEATING POWER AU · COO L· FAN COOLING POWER TO SYSTEM TO SYSTEM TO RH G RC Y W COOL HEAT M20225 Fig. [. . . ] Lower the temperature setting below room temperature. Raise the temperature setting above room temperature. The cooling system should stop. Operation To set the temperature, turn the dial until the pointer on the top setting scale aligns with the desired temperature. CT87B, J switches Switch System Setting Cool Off Heat Fan On Auto Result The thermostat controls your cooling system. Both the heating and cooling systems are off. [. . . ]

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