Johnson Controls T26 Series User manual

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

1 of 2

T22 / T25 / T26 Series

Line Voltage Wall Thermostat

(Heating, Cooling, or Heating and Cooling)

Code No. LIT-1922255

Issued February 1, 2009

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-metalthermometersuppliedas standard

except where indicated

• equipped with adjustable dial stops

(T26 Series)

Specifications

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

except energy conservation models.

Accessories

• replacement knobs and faceplates

• for double trim plate for mounting two T22s

or T26s

Applications

Use for line voltage control of heating and cooling equipment.

Series T25

Action on Increase

of Temperature

Low Stage

High Stage

SeriesT26

Action on Increase

of Tem

erature

t28cd.eps

T25, T26 Series Action Diagrams

Selection Chart

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

Code

Number1Type of

Adjustment Application Selector

Switch Differential Approximately °C (°F) Ship

Wt. (lb)

Heating Cooling

HEATING

T22AAA-1C Knob 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, max. setting 75°F (24°C) None 2 (1.1) 1.0

T26A-15C

(No thermometer) SPST, Energy Conservation Heating

model, max. 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, min. setting 75°F (24°C) None

T26J-9C

(No thermometer) SPST, Energy Conservation Cooling

model, min. setting 78°F (26°C) 2 (1.1) 1.0

T26

T25

T22

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

2 of 2

Line Voltage Wall Thermostat (Heating, Cooling, or Heating and Cooling) (Continued)

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

T22SFB-1C 2SPDT, used to control separate

loads on heating and cooling

T22TFB-1C 2SPDT, heavy duty, used to control

separate loads on heating and cooling 3 (1.7) 3 to 4 (1.7 to 2.2)

T26S-18C 3SPDT None 1-3/4 (1) 2-1/4 (1.3) 1.0

T26T-3C 2SPDT, 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 stagesT25A-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.

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

Code

Number1Type of

Adjustment Application Selector

Switch Differential Approximately °C (°F) Ship

Wt. (lb)

Heating Cooling

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