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
T26 Series Line Voltage Thermostats Product/Technical Bulletin 7
O
rdering Information
Table 2: Ordering Information
Item Product Code Number
Thermostat, SPST, Heating T26A
Thermostat, SPST, Heavy Duty Heating T26B
Thermostat, SPST, Cooling T26J
Thermostat, SPDT, Heating, Cooling, or Heating and Cooling T26S
Thermostat, SPDT, Heavy Duty Heating, Cooling, or Heating and Cooling T26T
Table 3: Faceplate Ordering Information (For T26
1
Thermostats with Plastic Cover)
Kit Number Mounting Position Adjustment Type Thermometer Cutout Temperature Scale
PLT333-1R
1
Vertical Knob Yes Fahrenheit
PLT333-2R
2
Horizontal Knob Yes Fahrenheit
PLT333-3R
Vertical Concealed Yes Fahrenheit
PLT333-4R
Horizontal Concealed Yes Fahrenheit
PLT333-5R
Vertical Knob Yes Celsius
PLT333-6R
Horizontal Knob Yes Celsius
PLT333-9R
Horizontal Concealed No n/a
PLT333-12R
Vertical Concealed No n/a
1
Can only be used with plastic cover assembly, which was made available in the Fall of 1989.
2
Supplied with standard wholesaler models (vertical is factory installed).
A
ccessories
Faceplates
Faceplates are available in separate kits for on-the-job
installation. All plates have peel-off backing strips.
See Table 3 for faceplate ordering information.
Faceplates must be ordered in quantities of ten.
Brand Name Faceplates
Brand name faceplates are available on quantity
orders. Contact Customer Service.
Concealed Adjustment Faceplates
Concealed adjustment faceplates are available on
factory order at no extra cost. For field changeover,
use the concealed faceplate kit and install directly over
the faceplate on the cover.
Thermostat Guards
Plastic, wire, or cast aluminum guards are available at
extra cost. See the GRD Series in the
Johnson
Controls HVAC/Refrigeration Controls Catalog
.
Double Control Trim Plates
Double control trim plates are available for vertical
mounting of T26 thermostats side-by-side on a
three gang vertical box. These plates may also be
used with T22, T25, T80, W43, and W45. Dimensions
are 5-1/2 in. high by 9-1/8 in. long (140 mm high by
232 mm long). Order Part No. PLT231-1R.
Energy Conservation Models
Thermostats are available with limited heating or
cooling ranges. The standard heating models are the
T26A-14 with a range of 40 to 75°F (4 to 24°C) and the
T26A-15 with a range of 40 to 65°F (4 to 18°C). The
cooling models are the T26J-7 with a range of
75 to 90°F (24 to 32°C) and the T26J-9 with a range of
78 to 90°F (26 to 32°C). Other limited settings are
available on quantity orders.