Owner's Manual
Page 1
...11 CT87N/CT87K The Round® CT87K (24 Vac heating systems) • CT87N (24 Vac heating and cooling systems) Getting started Check package contents: Before you begin, make sure • Thermostat • Coverplate • Wall anchors & screws (2 each) • Wire labels you... begin. 2. The Round® 69-1959EFS-02 If so, see mercury notice below. U.S. Remove cover and thermostat, but leave wallplate with wires attached. Copyright © 2009, Honeywell International Inc...
...11 CT87N/CT87K The Round® CT87K (24 Vac heating systems) • CT87N (24 Vac heating and cooling systems) Getting started Check package contents: Before you begin, make sure • Thermostat • Coverplate • Wall anchors & screws (2 each) • Wire labels you... begin. 2. The Round® 69-1959EFS-02 If so, see mercury notice below. U.S. Remove cover and thermostat, but leave wallplate with wires attached. Copyright © 2009, Honeywell International Inc...
Owner's Manual
Page 2
... counting terminals C or C1), you may have purchased the wrong replacement thermostat. Mark mounting position CT87N CT87K 1. Be careful not to let loose wires fall into the wall opening ! CT87N CT87K IGNORE WIRE COLORS: Use only letter designations to disconnect wires one by one. Pull wires through base. 2. Mark positions of both screw holes. 69-1959EFS-02...
... counting terminals C or C1), you may have purchased the wrong replacement thermostat. Mark mounting position CT87N CT87K 1. Be careful not to let loose wires fall into the wall opening ! CT87N CT87K IGNORE WIRE COLORS: Use only letter designations to disconnect wires one by one. Pull wires through base. 2. Mark positions of both screw holes. 69-1959EFS-02...
Owner's Manual
Page 3
... : Page 6 • Español: Página 11 Mount thermostat base 1. Check level if desired, then tighten screws. Match each labeled wire with electrical tape. CT87K R W Y Wiring CT87K • 2-wire heat-only system: Connect one wire to R terminal, one wire to W terminal. • 3-wire hot water heat-only system: Connect wires R to R, W to W, and Y to tap anchors into holes until...
... : Page 6 • Español: Página 11 Mount thermostat base 1. Check level if desired, then tighten screws. Match each labeled wire with electrical tape. CT87K R W Y Wiring CT87K • 2-wire heat-only system: Connect one wire to R terminal, one wire to W terminal. • 3-wire hot water heat-only system: Connect wires R to R, W to W, and Y to tap anchors into holes until...
Owner's Manual
Page 4
...switch to this setting for heat pump or electric heat systems. (This setting is for systems that allow the thermostat to control the fan in a call for your system (see table below). CT87N/CT87K • Owner's Manual Set fan operation switch (CT87N) Move the switch to the proper setting for your... system: F: For gas or oil heating systems, leave the fan operation switch in this factory-set position (for systems that control the fan in a call for heat, if a fan wire is ...
...switch to this setting for heat pump or electric heat systems. (This setting is for systems that allow the thermostat to control the fan in a call for your system (see table below). CT87N/CT87K • Owner's Manual Set fan operation switch (CT87N) Move the switch to the proper setting for your... system: F: For gas or oil heating systems, leave the fan operation switch in this factory-set position (for systems that control the fan in a call for heat, if a fan wire is ...