Owner's Manual
Page 3
... left by the old thermostat). 4. Push any excess wire back into the wall opening. Labels don't match? 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 both R and Rc terminals, remove the metal jumper. [2] Do...
... left by the old thermostat). 4. Push any excess wire back into the wall opening. Labels don't match? 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 both R and Rc terminals, remove the metal jumper. [2] Do...
Owner's Manual
Page 4
... Switch 1 Steam or gravity On High efficiency warm air Off (90% plus efficiency), hot water, or heat pump Gas or oil warm air Off (factory setting) Electric warm air On Switch 2 On On Off Off 1. Coverplate (optional) Thermostat 69-1959EFS-02 4 E F E: Change ...cycle rate switches Move the cycle rate switches to control the fan in a call for your system (see table below). Restore electrical power at the heating/ cooling system, or at the fuse/circuitbreaker panel. CT87N/CT87K • Owner's Manual Set fan operation switch (CT87N) Move the switch to the proper setting for...
... Switch 1 Steam or gravity On High efficiency warm air Off (90% plus efficiency), hot water, or heat pump Gas or oil warm air Off (factory setting) Electric warm air On Switch 2 On On Off Off 1. Coverplate (optional) Thermostat 69-1959EFS-02 4 E F E: Change ...cycle rate switches Move the cycle rate switches to control the fan in a call for your system (see table below). Restore electrical power at the heating/ cooling system, or at the fuse/circuitbreaker panel. CT87N/CT87K • Owner's Manual Set fan operation switch (CT87N) Move the switch to the proper setting for...