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Chrome-bevel sheet on grid paper — specs and return notes filed under the bay.
this high limit RA duct hygrostat operates within a critical 55-95% relative humidity (RH) range
The D506503 is the modern part number for the complete 15B3 cap assembly used in Armstrong's float and thermostatic line
Its pilot operated design allows for efficient operation across a wide range of differential pressures while maintaining consistent performance in demanding field conditions
always verify your specific mounting and capacitor requirements before installation
Maxitrol TS121A Sensor 320735-701 this high limit RA ductEnsure 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