TP923B Rebuilt/Exchange per your model
These are the old round Honeywell Thermostats used to control pneumatic valves and damper operators in all types of pneumatic heating and air-conditioning control systems. The TP923A Direct Acting, TP923B Reverse Acting, single temperature, 1 pipe. Other models available for inspection:
The TP923A is obsolete and can be rebuilt/exchange or replaced with TP973A2076 and the TP923B can be rebuilt/exchange or replaced with TP973B2171
REBUILT/EXCHANGE TERMS & CONDITIONS
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