T822K1018/U Owner’s Manual

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T822/T827 Series • Owner's Manual

69-2251EFS—01 2

System Types

• Gasoroil

• Warmair,hotwater,high-efficiencyfurnaces,heatpumps,steam,gravity

• Normallyclosedhotwatervalves(T822K)

• 2-wirecoolingsystems(T822L)

• Normallyopenhotwatervalves(T822L)

System Settings

• Heat,Off(selectmodelsonly)

Fan Settings

• Auto,On(selectmodelsonly)

Specifications

Temperature Control Range

• 45°to95°F(7°to35°C)

• 35°to85°F(2°to29°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(T822K)

• 750mVor12Vdcheatingsystems(T827K)

• 24Vaccoolingsystems(T822L)

Electrical Ratings

Terminal Voltage(50/60Hz) RunningCurrent

 Heating 20-30Vac 0.02-1.2A

 (Powerpile) 750mVdc 100mAdc

 (DCPowered) 12Vdc .55A

 Cooling 20-30Vac 0.02-1.2A

G Fan 20-30Vac 0.02-0.6A

 (Normallyopenhotwatervalve.) 20-30Vac 0.02-1.2A

 T822KandT827K

 T822L

* CAUTION:Donotuseaproduct

with this temperature control range

in a home. Temperatures at or below

freezing can occur. A product with this

temperature range is for use in areas

where temperatures below freezing can

occur, such as a garage.

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Owner’s Manual - Page 2