Owner's Manual
Page 1
... a hazardous condition. Copyright © 2007 Honeywell International Inc. US Patent No. Owner's Manual English: Page 1 Mode d'emploi Français : Page 6 Manual de Uso Español: Página 11 T87N/T87K The Round® This manual covers the following models: • Heat-only T87K Pre-installation checklist Check package contents: • Thermostat • Wall anchors & screws (2 each) • Heat and Cool T87N Before you begin, make sure...
... a hazardous condition. Copyright © 2007 Honeywell International Inc. US Patent No. Owner's Manual English: Page 1 Mode d'emploi Français : Page 6 Manual de Uso Español: Página 11 T87N/T87K The Round® This manual covers the following models: • Heat-only T87K Pre-installation checklist Check package contents: • Thermostat • Wall anchors & screws (2 each) • Heat and Cool T87N Before you begin, make sure...
Owner's Manual
Page 2
... thermostat provides electronic control of: • 24 VAC heating systems (T87K) • 24 VAC heating and cooling systems (T87N) System Types • Gas or oil heat (T87K) • Gas, oil, or electric heat with air conditioning (T87N) • Warm air, hot water, high-efficiency 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...
... thermostat provides electronic control of: • 24 VAC heating systems (T87K) • 24 VAC heating and cooling systems (T87N) System Types • Gas or oil heat (T87K) • Gas, oil, or electric heat with air conditioning (T87N) • Warm air, hot water, high-efficiency 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...
Owner's Manual
Page 3
... . 3. Wire specifications Use 18-gauge thermostat wire. English: Page 1 • Français : Page 6 • Español: Página 11 Wallplate installation 1. Position wallplate on wall, level, and mark hole positions. 2. Drill holes (3/16" for drywall, 7/32" for some 3- Wiring 1. Terminal Designations-T87N W Heat relay. G Fan relay. O Heat pump changeover valve energized in supplied wall anchors. 3. Rc Cooling power. Connect to prevent drafts from affecting thermostat operation. Terminal Designations-T87K W Heat relay. Remove...
... . 3. Wire specifications Use 18-gauge thermostat wire. English: Page 1 • Français : Page 6 • Español: Página 11 Wallplate installation 1. Position wallplate on wall, level, and mark hole positions. 2. Drill holes (3/16" for drywall, 7/32" for some 3- Wiring 1. Terminal Designations-T87N W Heat relay. G Fan relay. O Heat pump changeover valve energized in supplied wall anchors. 3. Rc Cooling power. Connect to prevent drafts from affecting thermostat operation. Terminal Designations-T87K W Heat relay. Remove...
Owner's Manual
Page 4
... 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 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...
... 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 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...
Owner's Manual
Page 5
... . CAUTION: EQUIPMENT DAMAGE HAZARD (T87N) Do not operate cooling system when outdoor temperature is on how long an implied warranty lasts, so the above limitation may not apply to repair or replace the product within the terms stated above. This warranty shall not apply if it is defective, (i) return it ; Temperature setting Rotate to you purchased it , with a bill of...
... . CAUTION: EQUIPMENT DAMAGE HAZARD (T87N) Do not operate cooling system when outdoor temperature is on how long an implied warranty lasts, so the above limitation may not apply to repair or replace the product within the terms stated above. This warranty shall not apply if it is defective, (i) return it ; Temperature setting Rotate to you purchased it , with a bill of...