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or a fan motor that requires a manual push to begin rotating
this combo unit ensures the mounting geometry and sensor positioning match the original factory specifications exactly
the technician must inspect the entire venting system and heat exchanger for soot or obstructions
Safety switches must match the manufacturer's specified temperature rating (280F for this model) to ensure the system reacts correctly to flue gas backup
While the probe can be mounted in any duct position
Sensus 138-18-021-04 Spring or a fan motor thatThe Sensus 138 18 021 04 Grey Spring is a high performance calibration component engineered specifically for Sensus RPC regulators. This replacement gas regulator spring is designed to provide precise outlet pressure control within the 3 to 15 PSI range. Built for heavy duty commercial and industrial gas distribution applications, it ensures the stable modulating gas pressure required for high efficiency burners, boilers, and furnaces. In the field,