Owner's Manual
Page 1
...-03 CAUTION: ELECTRICAL HAZARD Can cause electrical shock or equipment damage. Disconnect power before beginning installation. FF • HEAT 6 FAN ON 7 COOL • O • • AUTO 8 T87N Easy-To-SeeTM The Round® Owner's Manual English: Page 1 Mode d'emploi Français: Page 6 Manual de Uso Español: Página 11 Pre-installation checklist Check package contents: • Thermostat • Wall anchors & screws (2 each) • Owner's Manual • Braille...
...-03 CAUTION: ELECTRICAL HAZARD Can cause electrical shock or equipment damage. Disconnect power before beginning installation. FF • HEAT 6 FAN ON 7 COOL • O • • AUTO 8 T87N Easy-To-SeeTM The Round® Owner's Manual English: Page 1 Mode d'emploi Français: Page 6 Manual de Uso Español: Página 11 Pre-installation checklist Check package contents: • Thermostat • Wall anchors & screws (2 each) • Owner's Manual • Braille...
Owner's Manual
Page 2
... area with good air circulation at average temperature. T87N Easy-To-SeeTM • Owner's Manual Product application This thermostat provides electronic control of 24 VAC single-stage heating and cooling systems. System Types • Gas, oil, or electric heat with air conditioning • Warm air, hot water, high-efficiency furnaces, heat pumps, steam, gravity • Heat only • Heat only with fan • Cool only System Settings • Heat, Off, Cool Fan Settings • Auto, On Specifications Temperature Range • 40°...
... area with good air circulation at average temperature. T87N Easy-To-SeeTM • Owner's Manual Product application This thermostat provides electronic control of 24 VAC single-stage heating and cooling systems. System Types • Gas, oil, or electric heat with air conditioning • Warm air, hot water, high-efficiency furnaces, heat pumps, steam, gravity • Heat only • Heat only with fan • Cool only System Settings • Heat, Off, Cool Fan Settings • Auto, On Specifications Temperature Range • 40°...
Owner's Manual
Page 3
... switch labels Subbase Wiring 1. Rc Cooling power. B Heat pump changeover valve energized in place between R & Rc. Wire specifications Use 18- Remove metal jumper if two-transformer system. Shielded cable is not required. 3 69-1840EFS-03 Loosen screw terminals, insert wires into the wall opening with nonflammable insulation to secondary side of heating system transformer. Connect to prevent drafts from affecting thermostat operation. Plug the wall opening . 3. Y Compressor contactor. Heat pump systems If wiring...
... switch labels Subbase Wiring 1. Rc Cooling power. B Heat pump changeover valve energized in place between R & Rc. Wire specifications Use 18- Remove metal jumper if two-transformer system. Shielded cable is not required. 3 69-1840EFS-03 Loosen screw terminals, insert wires into the wall opening with nonflammable insulation to secondary side of heating system transformer. Connect to prevent drafts from affecting thermostat operation. Plug the wall opening . 3. Y Compressor contactor. Heat pump systems If wiring...
Owner's Manual
Page 4
... 4 F E: Change the switch to this factory-set position (for systems that allow the thermostat to control the fan in E a call for heat, if a fan wire is for systems that control the fan in a call for your system (see table below). T87N Easy-To-SeeTM • Owner's Manual Fan operation settings 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 connected to the G terminal.) Cycle rate settings Move the cycle...
... 4 F E: Change the switch to this factory-set position (for systems that allow the thermostat to control the fan in E a call for heat, if a fan wire is for systems that control the fan in a call for your system (see table below). T87N Easy-To-SeeTM • Owner's Manual Fan operation settings 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 connected to the G terminal.) Cycle rate settings Move the cycle...
Owner's Manual
Page 5
...: Honeywell Return Goods, Dock 4 MN10-3860, 1885 Douglas Dr. N., Golden Valley, MN 55422, or whether a replacement product can be to repair or replace the product within the terms stated above limitation may not apply to state. THIS WARRANTY IS THE ONLY EXPRESS WARRANTY HONEYWELL MAKES ON THIS PRODUCT. If you . Fan switch • On: Fan runs continuously. • Auto: Fan runs only when heating or cooling system...
...: Honeywell Return Goods, Dock 4 MN10-3860, 1885 Douglas Dr. N., Golden Valley, MN 55422, or whether a replacement product can be to repair or replace the product within the terms stated above limitation may not apply to state. THIS WARRANTY IS THE ONLY EXPRESS WARRANTY HONEYWELL MAKES ON THIS PRODUCT. If you . Fan switch • On: Fan runs continuously. • Auto: Fan runs only when heating or cooling system...
