and a 29-degree pitch across its 3 blades

The Robertshaw 10-681 Flame Sensor is a high-sensitivity monitoring component engineered for precise flame rectification in residential and commercial gas-fired systems

this unit is specifically rated for low-pressure systems with a 15 psi limit for steam

significant system pressure fluctuations during the startup cycle

80" WC (Water Column) setpoint

Reznor 220779 Inducer Assembly Refrigerant and a 29-degree pitch acrossThe Reznor 220779 Inducer Assembly is a critical OEM replacement 115V venter motor and wheel kit engineered specifically for Reznor unit heaters. This draft inducer is vital for maintaining the correct combustion airflow and ensuring harmful exhaust gases are efficiently removed from the heat exchanger. Operating at 115V 60Hz, this induced draft blower is a direct fit component that eliminates the need for field modifications on supported models.