Owner's Manual
Page 1
... 7,159,789; 7,159,790; 7,476,988 and other patents pending. Registered Trademark. Copyright © 2009, Honeywell International Inc. Is there a sealed tube containing mercury? Old thermostat Cover ® U.S. The Round® 69-1959EFS-02 Owner's Manual English: Page 1 Mode d'emploi Franç... de Uso Español: Página 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 ...
... 7,159,789; 7,159,790; 7,476,988 and other patents pending. Registered Trademark. Copyright © 2009, Honeywell International Inc. Is there a sealed tube containing mercury? Old thermostat Cover ® U.S. The Round® 69-1959EFS-02 Owner's Manual English: Page 1 Mode d'emploi Franç... de Uso Español: Página 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 ...
Owner's Manual
Page 2
... securely around each wire, wrap it with the label matching the letter on your old thermostat. (Adhesive labels are labeled. Stop now and call 1-800-468-1502 for advice. CT87N/CT87K • Owner's Manual Label wires and remove old wallplate Use a screwdriver to identify wire... types. As you may have purchased the wrong replacement thermostat. For CT87K: If your thermostat package.) Remove the old wallplate only after all wires are supplied in your old thermostat has 4 or more wires (not counting terminals C or C1), you disconnect each...
... securely around each wire, wrap it with the label matching the letter on your old thermostat. (Adhesive labels are labeled. Stop now and call 1-800-468-1502 for advice. CT87N/CT87K • Owner's Manual Label wires and remove old wallplate Use a screwdriver to identify wire... types. As you may have purchased the wrong replacement thermostat. For CT87K: If your thermostat package.) Remove the old wallplate only after all wires are supplied in your old thermostat has 4 or more wires (not counting terminals C or C1), you disconnect each...
Owner's Manual
Page 3
...wires 1. Use hammer to both R and Rc terminals, remove the metal jumper. [2] Do not connect both O and B if you have a heat pump. 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 Y terminals. 3 69-1959EFS-02 Push any excess wire back into holes until flush with same letter on thermostat, ...
...wires 1. Use hammer to both R and Rc terminals, remove the metal jumper. [2] Do not connect both O and B if you have a heat pump. 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 Y terminals. 3 69-1959EFS-02 Push any excess wire back into holes until flush with same letter on thermostat, ...
Owner's Manual
Page 4
... power at the heating/ cooling system, or at the fuse/circuitbreaker panel. E F E: Change the switch to this factory-set position (for systems that allow the thermostat to control the fan in a call for heat, if a fan wire is connected to the G terminal.) Set cycle rate switches Move the cycle rate switches... for heat pump or electric heat systems. (This setting is for systems that 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 heat).
... power at the heating/ cooling system, or at the fuse/circuitbreaker panel. E F E: Change the switch to this factory-set position (for systems that allow the thermostat to control the fan in a call for heat, if a fan wire is connected to the G terminal.) Set cycle rate switches Move the cycle rate switches... for heat pump or electric heat systems. (This setting is for systems that 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 heat).