Owner's Manual
Page 2
... furnaces, heat pumps, steam, gravity • Heat only • Heat only 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° to ... (T87N) • Heat, Off, Cool Electrical Ratings • Voltage: 20-30 VAC • Running current: 0.02-1.0A Installation tips Install the thermostat about 5 feet (1.5 m) above the floor in corners • Hot or cold air from ducts • Sunlight or radiant heat from appliances •...
... furnaces, heat pumps, steam, gravity • Heat only • Heat only 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° to ... (T87N) • Heat, Off, Cool Electrical Ratings • Voltage: 20-30 VAC • Running current: 0.02-1.0A Installation tips Install the thermostat about 5 feet (1.5 m) above the floor in corners • Hot or cold air from ducts • Sunlight or radiant heat from appliances •...
Owner's Manual
Page 3
... tighten mounting screws. Check level if desired. G Fan relay. Connect to secondary side of heating system transformer. Terminal Designations-T87K W Heat relay. wire hot-water valve systems (power open and close valves). R W Y NOTES R & Rc terminals (T87N) In single-transformer... O Heat pump changeover valve energized in place between R & Rc. Connect to secondary side of heating system transformer. Wire specifications Use 18-gauge thermostat wire. Wiring 1. Terminal Designations-T87N W Heat relay. Rc Cooling power. Y This terminal can be used for plaster) and tap ...
... tighten mounting screws. Check level if desired. G Fan relay. Connect to secondary side of heating system transformer. Terminal Designations-T87K W Heat relay. wire hot-water valve systems (power open and close valves). R W Y NOTES R & Rc terminals (T87N) In single-transformer... O Heat pump changeover valve energized in place between R & Rc. Connect to secondary side of heating system transformer. Wire specifications Use 18-gauge thermostat wire. Wiring 1. Terminal Designations-T87N W Heat relay. Rc Cooling power. Y This terminal can be used for plaster) and tap ...
Owner's Manual
Page 4
...) Electric warm air (9 CPH) On Switch 2 On On Off Off Align the slots on the base with tabs on the thermostat, then push gently until the thermostat snaps into place. T87N/T87K • Owner's Manual Fan operation settings (T87N) Fan operation settings: F: For gas or oil heating systems, leave the fan... is connected to the G terminal.) Cycle rate settings Move the cycle rate switches to control the fan in a call for heat, if a fan wire is for systems that control the fan in a call for your system (see table below). E: Change the switch to this factory-set position (for...
...) Electric warm air (9 CPH) On Switch 2 On On Off Off Align the slots on the base with tabs on the thermostat, then push gently until the thermostat snaps into place. T87N/T87K • Owner's Manual Fan operation settings (T87N) Fan operation settings: F: For gas or oil heating systems, leave the fan... is connected to the G terminal.) Cycle rate settings Move the cycle rate switches to control the fan in a call for heat, if a fan wire is for systems that control the fan in a call for your system (see table below). E: Change the switch to this factory-set position (for...
