Honeywell T87K Owner's Manual - Page 2

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 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 (T87N) • Auto, On Specifications Temperature Range • 40° to 90°F (4.5° to 32°C) Shipping Temperature • -20° to 120°F (-28.9° to 48.9°C) Operating Relative Humidity • 5% to 90% (non-condensing) System Settings (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 an area with good air circulation at average temperature. NO NO NO Do not install in locations where the thermostat can be affected by: • Drafts or dead spots behind doors and in corners • Hot or cold air from ducts • Sunlight or radiant heat from appliances • Concealed pipes or chimneys • Unheated/uncooled areas such as an outside wall behind the thermostat