Product Overview
Table Of Contents
- Features and Benefits
- Introduction
- Operating Differential
- Installation
- Supplies Needed
- Location Considerations
- Dimensions
- Mounting and Wiring
- Table 1: Electrical Ratings
- Adjustments
- Range Stops
- Checkout Procedure
- Dial Lock
- Repairs and Replacement
- Ordering Information
- Table 2: Ordering Information
- Table 3: Faceplate Ordering Information (For T26 Thermostats with Plastic Cover)
- Accessories
- Faceplates Double Control Trim Plates
- Brand Name Faceplates
- Energy Conservation Models
- Concealed Adjustment Faceplates
- Thermostat Guards
- Replacement Parts
- Table 4: Replacement Parts
- Specifications
4 T26 Series Line Voltage Thermostats Product/Technical Bulletin
IMPORTANT: Do not remove the thermostat cover
during installation. The sensing
element must be carefully protected
against accidental damage. All wiring
and mounting can be completed
without removing the cover.
!
CAUTION: Shock hazard. Disconnect
power supply before wiring
connections are made to avoid
electrical shock or possible
damage to the equipment.
To install the T26 thermostat:
1. Select the proper mounting location (refer to the
Location Considerations
section) and install a
vertical or horizontal wall box approximately 5 feet
(1.2 to 1.5 m) above the floor.
2. Run conduit or cable, as required by national
and/or local electric codes, from the wall box to the
equipment to be controlled. Leave approximately
6 in. (152 mm) of wire for connection to the
thermostat terminals.
3. Remove the mounting plate by loosening the
mounting plate locking screw (see Figure 5), and
lifting and removing the plate from the base.
4. Pull wires through the mounting plate and fasten
the plate, grounding screw end up, to the wall box
with the screws provided.
5. Strip the wires and connect to the proper terminals
on the back of the thermostat. See Figures 6
through 11.
Note: Use the terminal screws furnished
(8-32 x 1/4 in. binder head). Substitution
of other screws may cause problems in
making proper connections.
6. Ground the thermostat to the branch circuit ground
as required by National Electric Code and local
regulations.
7. Hook the two slots in the thermostat base over
the tabs on the mounting plate and swing the
thermostat into place. Push the wires back flush
into the wall box.
8. Securely tighten the mounting plate locking screw.
1 2
h
Line
Neutral
To Heating
Load
1
h
Line
Neutral
To Cooling
Load
3
T26A and T26B
T26J
Figure 6: Internal Diagram of T26A, T26B, and T26J
1 2
h
Line
Neutral
To Heating
Load
3
Heating
Figure 7: T26S, T26T Wired for Heating Application
1 2
h
Line
Neutral
3
To Cooling
Load
Cooling
Figure 8: T26S, T26T Wired for Cooling Application