Owner's Manual
Page 1
Copyright © 2005 Honeywell International Inc. Registered Trademark. Patents pending. All rights reserved. Owner's Manual CT31 Low-voltage Thermostat Getting started Check to make sure your package includes the following items: CT31 thermostat Cover plate Wire labels Caution card Wall anchors and mounting screws (2 each) Before you begin, make sure you have: • Screwdriver • Hammer • Level (optional) • Pencil • Drill bit (3/16" for drywall, 7/32" for plaster) ® U.S.
Copyright © 2005 Honeywell International Inc. Registered Trademark. Patents pending. All rights reserved. Owner's Manual CT31 Low-voltage Thermostat Getting started Check to make sure your package includes the following items: CT31 thermostat Cover plate Wire labels Caution card Wall anchors and mounting screws (2 each) Before you begin, make sure you have: • Screwdriver • Hammer • Level (optional) • Pencil • Drill bit (3/16" for drywall, 7/32" for plaster) ® U.S.
Owner's Manual
Page 2
... next page. Contact your local waste management authority for advice. Do you purchase right thermostat? If you have 5 or more wires, your new thermostat may have 5 or more wires? Leave wallplate in a sealed tube. Owner's Manual Remove your old thermostat 1 Turn off power at heating/cooling system (or fuse/circuit-breaker panel). 2 Remove cover...
... next page. Contact your local waste management authority for advice. Do you purchase right thermostat? If you have 5 or more wires, your new thermostat may have 5 or more wires? Leave wallplate in a sealed tube. Owner's Manual Remove your old thermostat 1 Turn off power at heating/cooling system (or fuse/circuit-breaker panel). 2 Remove cover...
Owner's Manual
Page 4
...; 4 • V W • W1 • H Y • Y1 • M G•F Rc Connect to cover marks left by your system. 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 the wall opening. Optional... cover plate Thermostat base Connect wires 1 Match each labeled wire with same letter on thermostat, see table below. See page 2. 4 If labels do not match letters on terminal. 2 Use a ...
...; 4 • V W • W1 • H Y • Y1 • M G•F Rc Connect to cover marks left by your system. 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 the wall opening. Optional... cover plate Thermostat base Connect wires 1 Match each labeled wire with same letter on thermostat, see table below. See page 2. 4 If labels do not match letters on terminal. 2 Use a ...
Owner's Manual
Page 6
Fan switch • On: Fan runs continuously. • Auto: Fan runs only when heating or cooling system is below 50°F (10°C). 6 System switch • Cool: Thermostat controls only the cooling system. • Heat: Thermostat controls only the heating system. • Off: Heating and cooling systems are off. To prevent possible compressor damage, do not operate cooling system when outdoor temperature is on. CAUTION: EQUIPMENT DAMAGE HAZARD. Owner's Manual Operation Temperature setting Move lever to adjust desired indoor temperature.
Fan switch • On: Fan runs continuously. • Auto: Fan runs only when heating or cooling system is below 50°F (10°C). 6 System switch • Cool: Thermostat controls only the cooling system. • Heat: Thermostat controls only the heating system. • Off: Heating and cooling systems are off. To prevent possible compressor damage, do not operate cooling system when outdoor temperature is on. CAUTION: EQUIPMENT DAMAGE HAZARD. Owner's Manual Operation Temperature setting Move lever to adjust desired indoor temperature.