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If your current spring is red and installed in a 143 series housing
Smith Cyclone models to ensure the correct fuel-to-air ratio
and VAV box control
Whether you are performing a commercial HVAC repair or an electrical system upgrade
this normally open (NO) pressure switch is factory-calibrated to a 1
Burnham Boiler 103661-02 Control 320720-756 If your current spring isThe Burnham Boiler 103661 02 Control is a critical Intelligent Hydronic Control (IHC) specifically engineered for induced draft boiler applications. This OEM replacement module is the standard for maintaining precise sequencing and safety in Burnham PVG boilers and the ESC steam boiler series. As a veterans in the field know, these mid efficiency atmospheric boilers rely on the 103661 02 to manage the induced draft fan, ignition sequence, and high
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