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Line Voltage Wall Thermostat (Heating, Cooling, or Heating and Cooling) (Continued)
T22 / T25 / T26 Series Line Voltage Wall Thermostat (Heating, Cooling, or Heating and Cooling (Continued)
Code
Type of
1
Adjustment
Number
HEATING AND COOLING
T22SDA-1C
Knob
T22SEB-1C
2
T22SFB-1C
2
T22TFB-1C
3
T26S-18C
2
T26T-3C
TWO-STAGE
T25A-1C
Knob
T25A-16C
Concealed
1. For the thermostat guard, refer to G Series Thermostat and Humidistat Guards Catalog Page, LIT-1922145.
2. Can also be used where one unit provides both heating and cooling by adding a jumper between terminals 2 and 3. (See Typical Wiring Diagram and Electrical
Ratings for Line Voltage Thermostats Catalog Page, LIT-1922600.)
3. Includes a faceplate for horizontal mounting. The plate is for on-the-job installation over a vertical plate.
Can field-convert to other configurations.
The T26S-18 is a universal replacement for Honeywell T451A, -B, T651A; White Rodgers 179-1, 180-1, 181-1, 182-101, -102; Robertshaw TA500, TH71,
-72, -79, -500, TX550.
T26T-3 replaces: Honeywell T4051A, -B, T6051A; White-Rodgers 151-6, 152-9, 159-3, -5.
The performance specifications are nominal and conform to acceptable industry standards. For applications at conditions beyond these specifications, consult the local Johnson Controls office.
Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products. © 2009 Johnson Controls, Inc.
Application
SPDT, permits system shutdown
at the thermostat
SPDT, used when the same device
controls heating and cooling
SPDT, used to control separate
loads on heating and cooling
SPDT, heavy duty, used to control
separate loads on heating and cooling
SPDT
SPDT, heavy duty
Two SPDT switches
Two-stage heating, cooling or one
stage heating and one stage cooling
2 of 2
Selector
Differential Approximately °C (°F)
Switch
Heating
Off-Auto
1-3 /4 (1)
Heat-Off-Cool
3 (1.7)
None
1-3/4 (1)
3 (1.7)
None
1-3/4 (1)
3 (1.7) between stages
Ship
Wt. (lb)
Cooling
2-1/4 (1.3)
1.3
3 to 4 (1.7 to 2.2)
2-1/4 (1.3)
1.0
3 to 4 (1.7 to 2.2)
2-1/4 (1.3)
1.5
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