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Advanced Microprocessor: Delivers +/- 5% timing accuracy
The high-pressure side operates between 87 and 464 psig with a fixed differential
When diagnosing pressure switch trips or combustion rollout issues
allowing for precise calibration on-site using the top-mounted adjustment screw
Johnson Controls T22AAA-1 Thermostat Freon Advanced Microprocessor: Delivers +/- 5%As a reliable choice for commercial and industrial heating applications, the Johnson Controls T22AAA 1 provides robust line voltage control without the complexity of modern digital interfaces. This mechanical wall thermostat features a liquid filled sensing element that reacts quickly to ambient air change, ensuring a precise 1 3 4 degree differential across its 40 to 90 degree temperature range. Designed for SPST (Single Pole Single Throw) operation,