Owner's Manual
Page 1
Patents pending. Registered Trademark. 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.
Patents pending. Registered Trademark. 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.
Owner's Manual
Page 2
... and attached to a terminal marked "C" or "C1" do not count that wire in your total. Did you have 5 or more wires, your new thermostat may have 5 or more wires? Do you purchase right thermostat? Count the number of wires coming out of them are attached to terminals in your old... NOTICE: Do not place your local waste management authority for advice. If so, stop now. Leave wallplate in a sealed tube. Contact your old thermostat in the trash if it contains mercury in place Is there a sealed tube containing mercury? Count wires to the next page. Owner's Manual Remove your...
... and attached to a terminal marked "C" or "C1" do not count that wire in your total. Did you have 5 or more wires, your new thermostat may have 5 or more wires? Do you purchase right thermostat? Count the number of wires coming out of them are attached to terminals in your old... NOTICE: Do not place your local waste management authority for advice. If so, stop now. Leave wallplate in a sealed tube. Contact your old thermostat in the trash if it contains mercury in place Is there a sealed tube containing mercury? Count wires to the next page. Owner's Manual Remove your...
Owner's Manual
Page 3
Wrap supplied labels securely around each wire, wrap it with the label matching the letter on your old thermostat. (Adhesive labels are supplied in your thermostat package.) Remove the old wallplate only after all wires are labeled. IGNORE WIRE COLORS: Use only letter designations to identify wire ...types. Be careful not to let loose wires fall into the wall opening ! CT31 Low-voltage Thermostat Label wires and remove old wallplate Use a screwdriver to disconnect wires one by one.As you disconnect each wire Do not let wires...
Wrap supplied labels securely around each wire, wrap it with the label matching the letter on your old thermostat. (Adhesive labels are supplied in your thermostat package.) Remove the old wallplate only after all wires are labeled. IGNORE WIRE COLORS: Use only letter designations to identify wire ...types. Be careful not to let loose wires fall into the wall opening ! CT31 Low-voltage Thermostat Label wires and remove old wallplate Use a screwdriver to disconnect wires one by one.As you disconnect each wire Do not let wires...
Owner's Manual
Page 4
... then tighten screws. 3 Push any excess wire back into holes until flush with wall. 3 [Optional] Pull wires through thermostat base and insert screws. 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... match? See note If this wire is present, you cannot use this thermostat with same letter on thermostat, see table below. Optional cover plate Thermostat base Connect wires 1 Match each labeled wire with your old thermostat). 4 Pull wires through cover plate (if needed to cover marks left by...
... then tighten screws. 3 Push any excess wire back into holes until flush with wall. 3 [Optional] Pull wires through thermostat base and insert screws. 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... match? See note If this wire is present, you cannot use this thermostat with same letter on thermostat, see table below. Optional cover plate Thermostat base Connect wires 1 Match each labeled wire with your old thermostat). 4 Pull wires through cover plate (if needed to cover marks left by...
Owner's Manual
Page 5
... or gravity system 1.2 Finish installation Base (shown with optional cover plate) Thermostat Cover 5 1 Mount thermostat on base and tighten three mounting screws. 2 Align the 3 tabs on the cover with slots on the thermostat, then push gently until the cover snaps into place. 3 Restore electrical ...power at the heating/cooling system, or at the fuse/ circuit-breaker panel. CT31 Low-voltage Thermostat Set adjustment lever 1 Separate cover from thermostat, and remove the plastic insert. 2 Use a pencil to move the adjustment lever to the proper setting for...
... or gravity system 1.2 Finish installation Base (shown with optional cover plate) Thermostat Cover 5 1 Mount thermostat on base and tighten three mounting screws. 2 Align the 3 tabs on the cover with slots on the thermostat, then push gently until the cover snaps into place. 3 Restore electrical ...power at the heating/cooling system, or at the fuse/ circuit-breaker panel. CT31 Low-voltage Thermostat Set adjustment lever 1 Separate cover from thermostat, and remove the plastic insert. 2 Use a pencil to move the adjustment lever to the proper setting for...
Owner's Manual
Page 6
CAUTION: EQUIPMENT DAMAGE HAZARD. System switch • Cool: Thermostat controls only the cooling system. • Heat: Thermostat controls only the heating system. • Off: Heating and cooling systems are off. Owner's Manual Operation Temperature setting Move lever to adjust desired indoor temperature. To prevent possible compressor damage, do not operate cooling system when outdoor temperature is on. Fan switch • On: Fan runs continuously. • Auto: Fan runs only when heating or cooling system is below 50°F (10°C). 6
CAUTION: EQUIPMENT DAMAGE HAZARD. System switch • Cool: Thermostat controls only the cooling system. • Heat: Thermostat controls only the heating system. • Off: Heating and cooling systems are off. Owner's Manual Operation Temperature setting Move lever to adjust desired indoor temperature. To prevent possible compressor damage, do not operate cooling system when outdoor temperature is on. Fan switch • On: Fan runs continuously. • Auto: Fan runs only when heating or cooling system is below 50°F (10°C). 6
Owner's Manual
Page 7
...determined to be defective or malfunctions, Honeywell shall repair or replace it ; If the product is shown by Honeywell that the defect or malfunction was caused by damage which vary from state to state. CT31 Low-voltage Thermostat Limited Warranty Honeywell warrants this product to be free from... defects in the possession of a consumer. This warranty gives you specific legal rights, and you . If you . THIS WARRANTY IS THE ONLY EXPRESS WARRANTY HONEYWELL MAKES ON THIS PRODUCT...
...determined to be defective or malfunctions, Honeywell shall repair or replace it ; If the product is shown by Honeywell that the defect or malfunction was caused by damage which vary from state to state. CT31 Low-voltage Thermostat Limited Warranty Honeywell warrants this product to be free from... defects in the possession of a consumer. This warranty gives you specific legal rights, and you . If you . THIS WARRANTY IS THE ONLY EXPRESS WARRANTY HONEYWELL MAKES ON THIS PRODUCT...