Maxitrol TS121A Sensor 320735-701 Replacing the worn 1190383 sensor

Replacing the worn 1190383 sensor typically restores the necessary electrical path to maintain the heating cycle

Precision Airflow: Engineered as a direct OEM replacement blower motor to match factory specifications for Reznor unit heaters

this high limit RA duct hygrostat operates within a critical 55-95% relative humidity (RH) range

the switch must be installed vertically according to manufacturer specifications

The D506503 is the modern part number for the complete 15B3 cap assembly used in Armstrong's float and thermostatic line

Maxitrol TS121A Sensor 320735-701 Replacing the worn 1190383 sensorEnsure precise combustion control and discharge air stability with the Maxitrol TS121A, a specialized discharge air temperature sensor engineered for the Maxitrol Selectra Series. Designed to operate within an 80 130 degrees F range, this thermistor based sensor provides the critical feedback loop required for electronic gas flame modulation in indirect fired make up air units. When integrated with a compatible mixing tube, the TS121A delivers near