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It is factory-set to trigger at 75 degrees Fahrenheit and cannot be manually calibrated in the field
Constructed for professional-grade HVACR applications
Universal Series Compatibility: Designed for direct installation into the terminal box of Marley 1800
Common Questions Is the 86H31 interchangeable with the 86H3101
suitable for R-410A heat pumps
Maxitrol TS121 Sensor Els PW 17895 It is factory-set to triggerFor veteran technicians servicing indirect fired make up air units, the Maxitrol TS121 discharge air temperature sensor is the critical component for maintaining a stable 55 90F terminal temperature range. Specifically engineered for integration with Selectra Series 20, 21, 30, and 31 modulation systems, this thermistor based sensor delivers a resistance of 4,500 ohms at 77F, providing the Maxitrol amplifier with the sub second response times required
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