| Product code number1 | Type of adjustment | Application | Selector switch | Differential approximately °F (°C) | Shipping weight (lb) | |
|---|---|---|---|---|---|---|
| Heating | Cooling | |||||
| Heating | ||||||
| T22AAA-1C | Knob | Single-pole, single-throw (SPST) | Off-Auto | 1-3/4 (1) | – | 1.3 |
| T22ABC-1C | Auto-Off-Fan | |||||
| T22ABC-3C | Concealed | |||||
| T22BBC-1C | Knob | SPST, medium duty | 3 (1.7) | |||
| T22CBC-1C | SPST, heavy duty | |||||
| T22CBC-3C | Concealed | |||||
| T26A-14C, no thermometer | Knob | SPST, energy conservation heating model, maximum setting 75°F (24°C) | None | 2 (1.1) | 1.0 | |
| T26A-15C, no thermometer | SPST, energy conservation heating model, maximum setting 65°F (18°C) | |||||
| Cooling | ||||||
| T22JAA-1C | Knob | SPST | Off-Auto | – | 2-1/4 (1.3) | 1.3 |
| T22JCC-1C | Auto-Off-Fan | |||||
| T26J-7C, no thermometer | SPST, energy conservation cooling model, minimum setting 75°F (24°C) | None | ||||
| T26J-9C, no thermometer | SPST, energy conservation cooling model, minimum setting 78°F (26°C) | 2 (1.1) | 1.0 | |||
| Heating and cooling | ||||||
| T22SDA-1C | Knob | Single-pole, double-throw (SPDT), permits system shutdown at the thermostat | Off-Auto | 1-3/4 (1) | 2-1/4 (1.3) | 1.3 |
| T22SEB-1C | SPDT, used when the same device controls heating and cooling | Heat-Off-Cool | ||||
| T22SFB-1C2 | SPDT, used to control separate loads on heating and cooling | |||||
| T22TFB-1C2 | SPDT, heavy duty, used to control separate loads on heating and cooling | 3 (1.7) | 3 to 4 (1.7 to 2.2) | |||
| T26S-18C3 | SPDT | None | 1-3/4 (1) | 2-1/4 (1.3) | 1.0 | |
| T26T-3C2 | SPDT, heavy duty | 3 (1.7) | 3 to 4 (1.7 to 2.2) | |||
| Two-stage | ||||||
| T25A-1C | Knob | Two SPDT switches: two-stage heating, cooling, or one-stage heating and one-stage cooling | None | 1-3/4 (1) | 2-1/4 (1.3) | 1.5 |
| 3 (1.7) between stages | ||||||
| T25A-16C | Concealed | |||||
1 For the thermostat
guard, refer to G Series Thermostat and Humidistat Guards
Catalog Page (LIT-1922145).
2 To also use the thermostat where one
unit provides both heating and cooling, add a jumper between terminals 2 and 3.
Refer to 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. You 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.