Johnson Controls T26A-14 Thermostat

The Johnson Controls T26A-14 Thermostat is a heavy-duty line voltage wall thermostat specifically engineered for reliable HVACR heating applications. For technicians managing energy-conscious facilities, this SPST heating model features a fixed max setting of 75 degrees to prevent overheating and reduce operation costs. Utilizing a liquid-filled sensing element coupled with a high-efficiency diaphragm, it delivers a precise 2 degree differential for stable temperature regulation in commercial and industrial environments. This model is designed for straightforward field installation with a standard vertical faceplate and knob adjustment, omitting the thermometer and selector switch to minimize mechanical failure points and unauthorized tampering. Whether controlling unit heaters, electric heat, or fan coils, the T26A-14 provides the rugged durability expected from the Johnson Controls T26 Series. Its enclosed Pennswitch contacts provide superior dust protection, ensuring long-term continuity in demanding mechanical rooms.

Key Benefits for Contractors:

• Efficient Energy Management: The restricted 75?F setpoint ceiling is ideal for energy conservation heating strategies in multi-unit housing or commercial spaces.
• Simplified SPST Control: The Single Pole Single Throw switch configuration streamlines HVAC thermostat wiring for basic heating-only loads.
• Rugged Component Housing: Features a thermoplastic cover with an Allen-head locking screw to prevent unwanted adjustments by non-authorized personnel.
• Universal Mounting: Includes a mounting plate for easy installation onto standard electrical switch boxes without removing the cover.

Common Questions:

What is the maximum electrical rating for this line voltage model?
The T26A-14 is built for line voltage control (typically 120V to 277V); however, always verify your specific inductive and non-inductive load requirements against the technical data sheet to ensure the SPST switch can handle the heater?s amperage.

Can I use the T26A-14 for cooling applications or fan-only modes?
No, this specific model is an SPST heating thermostat. It does not include a selector switch or the SPDT internal wiring required for cooling or heat/cool changeover applications.

How do I calibrate the temperature differential?
The 2 degree differential is factory-set to ensure high-cycle reliability and prevent rapid equipment cycling. This model is factory-calibrated and does not require field adjustment of the differential or thermometer.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.