ensuring the flue collector box maintains proper negative pressure before allowing the ignition sequence to proceed

ensuring full integration with factory harnesses

the precision-machined hub ensures a secure fit on the blower motor shaft

reducing mechanical stress on the bellows and allowing the switch to be mounted in a more accessible location for monitoring

This unit uses a 1k Ohm Nickel RTD (6000 PPM) element

Johnson Controls VG2831UM292NGGC Valve Assembly 318172-701 ensuring the flue collector boxThe Johnson Controls VG2831UM292NGGC Valve Assembly is a heavy duty, 3 inch 3 way mixing globe valve designed for precise fluid control in high capacity commercial HVAC systems. Engineered with a robust cast iron body and durable brass trim, this assembly utilizes a modified linear flow characteristic to ensure stable modulation of hot water, chilled water, or 50% glycol solutions. For steam applications, the unit handles up to 35 psig saturated steam