Honeywell CT87A User Manual

® U.S. Registered TrademarkCopyright © 2002 HoneywellAll Rights Reserved69-0274-6Verify that you have thecorrect thermostatUsing the compatibility cha

CT87A,B,J ROUND® THERMOSTAT69-0274-6 10 Set the heat anticipator for your systemIMPORTANT: Setting the heat anticipator allows the thermostat to maint

CT87A,B,J ROUND® THERMOSTAT11 69-0274-6Check coolingIMPORTANT: To avoid damaging the compressor in the air conditioner, do not operate the cooling sys

CT87A,B,J ROUND® THERMOSTAT69-0274-6 G.H. Rev. 08-02 www.honeywell.com/yourhomeAutomation and Control SolutionsHoneywell Honeywell Limited-Honeywel

CT87A,B,J ROUND® THERMOSTAT69-0274-6 2 Prepare for installation1. Carefully unpack your new thermostat; rough handling may affect its accuracy. Save y

CT87A,B,J ROUND® THERMOSTAT3 69-0274-65. Label the wires using the wiring labels that came with the CT87. Identify each wire using the letter of the t

CT87A,B,J ROUND® THERMOSTAT69-0274-6 4 1. If using the cover ring: Position the cover ring against the wall so that the arrow in the middle of the cov

CT87A,B,J ROUND® THERMOSTAT5 69-0274-61. Place the cover ring against the outlet box so that the arrow in the middle of the cover ring is pointing up.

CT87A,B,J ROUND® THERMOSTAT69-0274-6 6 Wire the thermostat1. Use the wiring cross-reference table below to match each old thermostat wire with its cor

CT87A,B,J ROUND® THERMOSTAT7 69-0274-6Fig. 8. CT87A for a 2-wire heating only system. Fig. 9. CT87A for a 3-wire hot water heating only system.Fig. 10

CT87A,B,J ROUND® THERMOSTAT69-0274-6 8 Fig. 11. CT87B for a 5-wire heating/cooling system.Fig. 12. CT87J for a 4-wire single stage heat pump.Fig. 13.

CT87A,B,J ROUND® THERMOSTAT9 69-0274-6Mount the thermostat1. Pull off the thermostat cover and discard the red plastic insert that holds the mercury s