Non-Programmable Thermostats
Heat Only Dual Scale
Heat-Off
Mercury Free T822 Econo Thermostats
Meet all current and future mercury-free thermostat compliance
needs with Honeywell’s Mercury-Free Econostat. With a sleek,
attractive appearance, the Mercury-Free Econostat is the perfect
electromechanical replacement choice for you and your
customers. Thermostats provide 24 Vac control of heating or
cooling systems.
• Vented cover for improved temperature sensing
• Setting lever and thermometer scale on thermostat cover
• Mounts directly on the wall or on vertical outlet box
• Integrated thermometer and setting scale
Dimensions, Approximate: 4 3/4 in. high x 2 7/8 in. wide x 1 3/8 in.
deep (121 mm high x 73 mm wide x 35 mm deep)
Electrical Ratings: 20 to 30 Vac
Accuracy: ±2 F (±1 C)
Switch Type:
Switching Action: SPST
Heating: 0.02 A to 1.0 A running
Sensor Element: Bimetal
Color: Premier White®
Mounting: Ver tica l
Precision Snap Action
Switch
Positions
Product Number Application
T822K1000/U Heat Only HEAT-OFF R, W 1 Heat 45 to 95 — Mercury Free Heat Only Thermostat with Positive
T822K1018/U Heat Only — R, W 1 Heat 45 to 95 — Mercury Free Heat Only Thermostat for control of
T822K1042/U Heat Only HEAT-OFF R, W 1 Heat 35 to 85 — Mercury Free Heat Only Thermostat with Low
T822L1000/U Cool Only or Heat
Only for Normally
Open Hot Water
Zone Valves
— R, Y 1 Cool 45 to 95 7 to 32 Temperature scale in Fahrenheit and Celsius,
Termi nal
Designations Stages
Temperature
Setting Range
DescriptionSystem (F) (C)
Off for control of single stage low voltage heating
systems
single stage low voltage heating systems
Temperature Scale, Ideal for Garages. Heat/Off.
For control of heat only low voltage systems.
Mercury Free Cool Only Thermostat control of
single stage low voltage cooling systems
Mercury Free T827 Econo Thermostats
Meet all current and future mercury-free thermostat compliance
needs with Honeywell’s Mercury-Free Econostat. With a sleek,
attractive appearance, the Mercury-Free Econostat is the perfect
electromechanical replacement choice for you and your
customers. Thermostats for 12 Vdc or 750 mV control of heating
systems.
• Integrated thermometer and temperature setting scale
• Precise Snap-action switch
• Mount directly on wall or outlet box
• Includes dealer logo pocket
Application: Heat Only
Dimensions, Approximate: 4 3/4 in. high x 2 7/8 in. wide x 1 3/8 in.
deep (121 mm high x 73 mm wide x 35 mm deep)
Accuracy: ±2 F (±1 C)
Switch Type:
Switching Action: SPST
Sensor Element: Bimetal
Color: Premier White®
Mounting: Ver tica l
Precision Snap Action
Switch Positions
Product Number
T827K1009/U HEAT-OFF R, W 1 Heat 45 to 95 —
30 customer.honeywell.com 70-6910
System (F) (C)
Terminal Designations Stages
Temperature Setting Range