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The Emerson Alco 058950 (200RB4T5) is a pilot-operated
The unit includes integral restrictors specifically for low volume thermostats
Whether you are servicing a residential bypass setup or a light commercial application
it provides a versatile single-stage control solution with an SPDT output relay
Maxitrol TS144 Sensor 30067439-890 The Emerson Alco 058950 (200RB4T5)The Maxitrol TS144 is a precision engineered discharge air temperature sensor designed specifically for integration with Selectra modulation systems. This dual range thermistor serves as the primary feedback loop for the gas valve, ensuring optimal burner adjustment based on real time discharge temperatures. Functioning within a 40F to 80F minimum and 80F to 140F maximum range, it provides the critical data required for Selectra air temperature
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