Product Application; System Types; Electrical Ratings; System Settings - Honeywell T822 Owner's Manual

T822/T827 Series • Owner's Manual

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)

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)

Electrical Ratings

Terminal
1
W Heating
(Powerpile)
(DC Powered)
Y 2 Cooling
G Fan
(Normally open hot water valve.)
1
T822K and T827K
2
T822L
69-2251EFS—01
Voltage (50/60Hz)
20-30 Vac
750 mVdc
12 Vdc
20-30 Vac
20-30 Vac
20-30 Vac
2
* 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.
Running Current
0.02-1.2 A
100 mAdc
.55 A
0.02-1.2 A
0.02-0.6 A
0.02-1.2 A