Carrier HK02ZB042 Pressure Switch 323613-751 Maintenance-Free Operation: The frictionless magnetic

Maintenance-Free Operation: The frictionless magnetic linkage eliminates the need for recalibration due to mechanical wear or fluid evaporation

It must be installed in sequence with a dedicated safety shut-off valve

Engineered with a 3-inch insertion length and a board-mount configuration

Technicians should periodically inspect the inlet strainer and clear any heavy sediment

Carrier HK02ZB042 Pressure Switch 323613-751 Maintenance-Free Operation: The frictionless magneticThe Carrier HK02ZB042 Pressure Switch is a critical OEM safety component designed for precise monitoring of combustion air and venting pressure within high efficiency Carrier, Bryant, and Payne furnaces. Factory calibrated to 42# Open and 57# Close, this low pressure switch ensures the inducer motor is moving sufficient air to clear combustion byproducts before allowing the ignition sequence to proceed. It features a 36" lead and a durable diaphragm