T87N/T87K • Owner's Manual
69-1958EFS—04 2
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)
System Settings (T87N)
• Heat, Off, Cool
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)
Electrical Ratings
• Voltage: 2030 VAC
• Running current:0.021.0A
Install the thermostat about 5 feet (1.5 m) above the floor in an
area with good air circulation at average temperature.
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
NO
NO
NO
Installation tips
Product application
This thermostat provides electronic control of:
• 24 VAC heating systems (T87K)
• 24 VAC heating and cooling systems (T87N)
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