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Rosewood paper grain — description and returns beneath the overlapping buy card.
a clogged vent pipe
What is the maximum inlet pressure rating for this model
When servicing these units
Versatile Pressure Range: Rated for systems with maximum fluid pressure up to 290 psig (20 bar)
including the induced draft blower
Lochinvar & A.O. Smith 100109944 Ignition Board 320734-701 a clogged vent pipeThe Lochinvar & A. O. Smith 100109944 Ignition Board is a critical OEM replacement part engineered for high performance commercial gas water heaters. Designed for precision ignition control, this integrated circuit manages the HSI (Hot Surface Ignition) sequence, ensuring consistent flame sensing and gas valve timing for specific BTN and BTR 500 series units. As a verified factory replacement board, it eliminates the timing issues and terminal