Application - PENN Controls - LIT-125630 - T22AAA - T22ABC - T22BBC - T22CBC - T22JAA - T22JCC - T22SDA - T22SEB - T22SFB - T22TFB - Line-Voltage Thermostat - T22 Line‐Voltage Thermostat

T22 Series Line Voltage Thermostats With Selector Switch Product Bulletin

PENN Controls
Product name
T22 Line‐Voltage Thermostat
Document type
Product Bulletin
Document number
Revision date

T22 Series line voltage thermostats control heating, cooling, or year-round air conditioning units in commercial, industrial, or residential installations.

Typical uses are for unit heaters, fan coils, blast coils, refrigeration storage rooms, electric heat, duct furnaces, and greenhouses. Models are available with single-pole, single-throw (SPST) or single-pole, double-throw (SPDT) contact action for standard duty nominal 1/4 hp or heavy duty nominal 1 hp applications.

These thermostats are also suitable for low voltage applications. Thermostats are available with a variety of integral selector switches and do not require separate subbases. For more information, see Technical specifications.

Figure 1. T22 thermostat with system selector knob
Important: All T22 Series thermostats are designed for use only as operating controls. Where an operating control failure would result in personal injury and/or loss of property, it is the responsibility of the installer to add devices (safety, limit controls) or systems (alarm, supervisory systems) that protect against, or warn of, control failure.
Figure 2. T22 interior with selector switch
Figure 3. T22 thermostat with concealed adjustment

For line voltage thermostats without selector switches, refer to T26 Series Line Voltage Thermostats Product/Technical Bulletin (LIT-125645).