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This HVAC differential pressure control monitors the pneumatic pressure generated by the inducer motor to ensure the combustion circuit only closes under safe venting conditions
all-stainless steel capacitive sensing element to maintain high stability in varying air or non-conducting gas environments
it requires a minimum differential pressure of 5 PSI to lift the diaphragm and allow flow
The 1/2-inch NPT threaded housing further simplifies conduit connections for field wiring by mechanical contractors
Heat Controller R68AB0001 Blower Relay 321894-706 This HVAC differential pressure controlThe Heat Controller R68AB0001 Blower Relay is a heavy duty DPDT (Double Pole Double Throw) switching component essential for managing blower motor graduation and sequencing in residential HVAC systems and light commercial air handlers. This OEM spec relay is a direct replacement for many International Comfort Products (ICP), Comfort Aire, and Heil Quaker units, providing a high capacity interface between the low voltage 24V thermostat control circuit