BROAN-NuTone FIN-180B-HW Fan 319847-401 preventing gas valve energization if

preventing gas valve energization if the exhaust flue is obstructed

While the 337316-702 is used across many Carrier compressor solenoid applications

1P features a universal input control signal

making it compatible with standard residential and commercial water systems

Dual-Purpose Protection: Relieves overpressure from thermal expansion during normal cycles and critical over-firing conditions caused by control failure

BROAN-NuTone FIN-180B-HW Fan 319847-401 preventing gas valve energization ifThe Broan NuTone FIN 180B HW is a high performance 180 CFM hardwired supply fan engineered to meet ASHRAE 62. 2 standards for mechanical ventilation and indoor air quality. Designed for HVAC contractors requiring a reliable fresh air system, this unit effectively balances building pressure by introducing filtered outdoor air into the air handler or ductwork. The FIN 180B HW motorized damper ensures an airtight seal when the system is inactive,