Honeywell CT1800 Owner's Manual - Page 3

BULB SWITCH ANTICIPATOR SCALE M6115 ANTICIPATOR SETTING LEVER Disconnect wires from old thermostat, wallplate or subbase. Tape each end and label with the letter of the terminal designation to make reconnection easier. If there are only two wires labeling is not necessary. 4 MOUNT WALLPLATE OR SUBBASE EXISTING HORIZONTAL OUTLET BOX IMPORTANT: If old thermostat has B or O terminals, this thermostat cannot be used on your system. EXCEPTION: The CT1802 Thermostat can be used on a system with B or O terminals. One or two extra wires? If you are replacing a Honeywell Chronotherm® Thermostat, you may find one or two wires that go to the clock terminals on the Chrontherm® Thermostat wiring wallplate. Do not allow them to touch, or you may damage your transformer. Disconnect the wires, and wrap them separately, using electrical tape. Do not wrap them together. Place the wires where they will not interfere with the operation of the new thermostat. Record the colors and terminal designation labels of the remaining wires. EXISTING HORIZONTAL OUTLET BOX R G FAN ON AUTO O B W Y HEAT COOL OFF HEATING/ COOLING SUBBASE M1553A If mounting on outlet box , mount as shown in appropriate illustration. When mounting on wall, hold wallplate or subbase in position and mark holes on wall. Use level to make sure wallplate or subbase will be level. Drill 3/16 in. holes and gently tap anchors into holes until flush with the wall. 3 SCREW HOLES WITH PLASTIC ANCHORS R W HEATING-ONLY WALLPLATE M856A Position wallplate or subbase as shown in appropriate figure, and loosely insert the screws supplied. Carefully level the wallplate or subbase and firmly tighten screws. VERTICAL OUTLET BOX ADAPTER RING 196393A ASSEMBLY COVER PLATE O B R W G Y FAN ON AUTO HEAT COOL OFF HEATING/COOLING SUBBASE M1552A MOUNTING SCREWS (2) M866 O B W R Y G SUBBASE OR WALLPLATE MOUNTING SCREWS (2) 3 69-0394-3