T822 Series • Owner's Manual
2
System Types
• Gas or oil
• Warm air, hot water, high-efficiency furnaces, heat pumps, steam, gravity
• Normally opened hot water valves (T822K)
• 2-wire cooling systems (T822L)
• Normally closed hot water valves (T822L)
System Settings
• Heat, Off (select models only)
Specifications
Temperature Range
• 50° to 90°F (10° to 32°C)
Operating Ambient Temperature
• 0° to 120°F (-18° to 49°C)
Operating Relative Humidity
• 5% to 90% (non-condensing)
Dimensions (vertical model)
• 2.88W x 4.75H x 1.5D (inches)
• 73W x 121H x 38D (mm)
Dimensions (horizontal model)
• 4.75W x 2.88H x 1.5D (inches)
• 121W x73H x 38D (mm)
Product application
This thermostat provides control of:
• 24 Vac heating systems (T822)
• 750 mV or 12 Vdc heating systems (T827K)
• 24 Vac cooling systems (T822L)
Electrical Ratings
Terminal Voltage (50/60Hz) Running Current
W Heating 20-30 Vac 0.02-1.2 A
(Powerpile) 750 mVdc 100 mAdc
(DC Powered) 12 Vdc .55 A
Y Cooling 20-30 Vac 0.02-1.2 A
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