Owner's Manual
Page 2
... by: • Drafts or dead spots behind doors and in an area with fan (T87N) • Heat only, 2-wire, and 3-wire hot-water valve (power open and close valves) (T87K) • Cool only (T87N) Fan Settings (T87N) • Auto, On Specifications Temperature Range • 40° ...or chimneys • Unheated/uncooled areas such as an outside wall behind the thermostat T87N/T87K • Owner's Manual Product application This thermostat provides electronic control of: • 24 VAC heating systems (T87K) • 24 VAC heating and cooling systems (T87N) System Types • Gas or...
... by: • Drafts or dead spots behind doors and in an area with fan (T87N) • Heat only, 2-wire, and 3-wire hot-water valve (power open and close valves) (T87K) • Cool only (T87N) Fan Settings (T87N) • Auto, On Specifications Temperature Range • 40° ...or chimneys • Unheated/uncooled areas such as an outside wall behind the thermostat T87N/T87K • Owner's Manual Product application This thermostat provides electronic control of: • 24 VAC heating systems (T87K) • 24 VAC heating and cooling systems (T87N) System Types • Gas or...
Owner's Manual
Page 3
... system. Position wallplate on wall, level, and mark hole positions. 2. Rc Cooling power. Terminal Designations-T87K W Heat relay. Heat pump systems (T87N) If wiring to secondary side of cooling system transformer. Shielded cable is not required. Pull wire through wire hole. Y Compressor contactor. Check level if desired. Plug the wall opening . 3. G Fan relay. Y This...
... system. Position wallplate on wall, level, and mark hole positions. 2. Rc Cooling power. Terminal Designations-T87K W Heat relay. Heat pump systems (T87N) If wiring to secondary side of cooling system transformer. Shielded cable is not required. Pull wire through wire hole. Y Compressor contactor. Check level if desired. Plug the wall opening . 3. G Fan relay. Y This...
Owner's Manual
Page 4
E: Change the switch to this factory-set position (for systems that allow the thermostat to the proper setting for heat). T87N/T87K • Owner's Manual Fan operation settings (T87N) Fan operation settings: F: For gas or oil heating systems, leave the fan operation switch in this setting for ...heat pump or electric heat systems. (This setting is for systems that control the fan in a call for heat, if a fan wire is connected to the G terminal.) Cycle rate settings Move the cycle rate switches to control the fan in a call for your system (see table below...
E: Change the switch to this factory-set position (for systems that allow the thermostat to the proper setting for heat). T87N/T87K • Owner's Manual Fan operation settings (T87N) Fan operation settings: F: For gas or oil heating systems, leave the fan operation switch in this setting for ...heat pump or electric heat systems. (This setting is for systems that control the fan in a call for heat, if a fan wire is connected to the G terminal.) Cycle rate settings Move the cycle rate switches to control the fan in a call for your system (see table below...