White Rodgers T25 Thermostat User Manual

Code No. LIT-1922255

Issued February 1, 2009

T22 / T25 / T26 Series

Line Voltage Wall Thermostat

(Heating, Cooling, or Heating and Cooling)

Description

For line voltage control of residential,

commercial, or industrial heating or year-

round air conditioning. Heat or cold

anticipators are not required. The liquid-

charged temperature sensing element and

highly efficient diaphragm and leverage

provide close temperature control.

Features

•

attractive beige colored, high-impact

plastic enclosure (T26 Series)

close differential without the need for

anticipators

bi-metal thermometer supplied as standard

except where indicated

T26

T22

T25

equipped with adjustable dial stops

(T26 Series)

Applications

Use for line voltage control of heating and cooling equipment.

Specifications

Series T25

Temperature range is 40 to 90°F (5 to 30°C),

except energy conservation models.

SeriesT26

Accessories

•

replacement knobs and faceplates

for double trim plate for mounting two T22s

or T26s

High Stage

Low Stage

Action on Increase

of Temperature

Action on Increase

of Temperature

T25, T26 Series Action Diagrams

Selection Chart

T22 / T25 / T26 Series Line Voltage Wall Thermostat (Heating, Cooling, or Heating and Cooling

Code

Number¹

Type of

Adjustment

Application

Selector

Switch

Differential Approximately °C (°F)

Ship

Wt. (lb)

Heating

Cooling

HEATING

T22AAA-1C

T22ABC-1C

T22ABC-3C

T22BBC-1C

T22CBC-1C

T22CBC-3C

Knob

SPST

Off-Auto

1-3/4 (1)

–

1.3

Auto-Off-Fan

Concealed

Knob

SPST, Medium Duty

SPST, Heavy Duty

3 (1.7)

2 (1.1)

Concealed

Knob

T26A-14C

(No thermometer)

SPST, Energy Conservation Heating

model, max. setting 75°F (24°C)

None

1.0

T26A-15C

(No thermometer)

SPST, Energy Conservation Heating

model, max. setting 65°F (18°C)

COOLING

T22JAA-1C

T22JCC-1C

Knob

SPST

Off-Auto

Auto-Off-Fan

None

–

2-1/4 (1.3)

2 (1.1)

1.3

1.0

T26J-7C

(No thermometer)

SPST, Energy Conservation Cooling

model, min. setting 75°F (24°C)

T26J-9C

(No thermometer)

SPST, Energy Conservation Cooling

model, min. setting 78°F (26°C)

The performance specifications are nominal and conform to acceptable industry standards. For applications at conditions beyond these specifications, consult the local Johnson Controls office.

www.johnsoncontrols.com

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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

Number¹

Type of

Adjustment

Application

Selector

Switch

Differential Approximately °C (°F)

Ship

Wt. (lb)

Heating

Cooling

HEATING AND COOLING

T22SDA-1C

Knob

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

SPDT, used to control separate

loads on heating and cooling

T22SFB-1C

T22TFB-1C

SPDT, heavy duty, used to control

separate loads on heating and cooling

3 (1.7)

3 to 4 (1.7 to 2.2)

SPDT

None

1-3/4 (1)

3 (1.7)

2-1/4 (1.3)

1.0

1.5

T26S-18C

SPDT, heavy duty

3 to 4 (1.7 to 2.2)

T26T-3C

TWO-STAGE

T25A-1C

Knob

Two SPDT switches

1-3/4 (1)

2-1/4 (1.3)

Two-stage heating, cooling or one

stage heating and one stage cooling

T25A-16C

Concealed

3 (1.7) between stages

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.

www.johnsoncontrols.com

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