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this SPP heater assembly ensures consistent thermal transfer and rapid response times when staged as primary or supplemental heat
the S1-331-02979-000 is the officially updated version
Common Questions & Technical Insights Is the ST-W24 compatible with non-Johnson Controls controllers
Synchronous Accuracy: Maintains precise timing intervals for compliant data logging
Smith boiler control modules
Reznor 203525 Wire Harness THPU32HP7Y this SPP heater assembly ensuresThe Reznor 203525 Wire Harness is a critical OEM replacement component engineered for precise electrical integration within Reznor UDBP and UDBS unit heaters. Specifically designed for 100,000 to 125,000 BTU modelsincluding the UDBP100, UDBP125, UDBS100, and UDBS125this harness features a 9 pin terminal connector to ensure secure signal and power distribution across the system. As a veteran grade HVAC replacement part, it eliminates the common "no