Honeywell CT31 Owner's Manual - Page 4

Owner's Manual Mount thermostat base 1 Drill holes at pencil-marked locations (3/16" holes for drywall, 7/32" holes for plaster). 2 Use hammer to tap anchors into holes until flush with wall. 3 [Optional] Pull wires through cover plate (if needed to cover marks left by your old thermostat). 4 Pull wires through thermostat base and insert screws. Check level if desired, then tighten screws. Optional cover plate Thermostat base Connect wires 1 Match each labeled wire with same letter on terminal. 2 Use a screwdriver to loosen screw terminals, wrap bare wire securely around terminals, then tighten screws. 3 Push any excess wire back into the wall opening. Labels don't match? If labels do not match letters on thermostat, see table below. Existing wires R • RH • 4 • V W • W1 • H Y • Y1 • M G•F Rc Connect to: Terminal "R" Terminal "W" Terminal "Y" Terminal "G" Stop! See note If this wire is present, you cannot use this thermostat with your system. See page 2. 4