you ensure the burner operates within the manufacturer's specified CO2 and O2 parameters

this beige metal thermostat guard features a tamper-resistant design to prevent unauthorized temperature adjustments and physical damage to sensitive controls

The unit features 1/8" NPT female connections and is field-adjustable via a calibrated scale

The internal SPDT relay provides one normally open and one normally closed contact

the internal element may be chemically "poisoned

Reznor 194374 Housing Assembly 320720-756 you ensure the burner operatesIf you are servicing a Reznor unit heater and dealing with diagnostic codes related to induced draft or pressure switch failures, the Reznor 194374 Housing Assembly is a critical OEM replacement for maintaining proper combustion airflow. As a venter housing assembly HS, this component is engineered to house the power venter or exhaust fan, ensuring that toxic flue gases are efficiently moved from the heat exchanger to the vent pipe. This specific