commissioning

The Williams 1403822 Direct Vent Furnace is a high-efficiency natural gas wall heater designed for compact residential and commercial heating applications

and inspect the spark electrode gap before replacing the module

featuring a specific 70F-80F temperature range

Verification of the part number and valve size (2 1/2" to 3") is necessary before attempting installation on non-native hardware

Lochinvar & A.O. Smith 100112323 Gas Valve Els PW 17895 commissioningThe Lochinvar & A. O. Smith 100112323 Gas Valve is a critical OEM component engineered for high recovery commercial water heaters and boilers, specifically the HW300 and HW399 models. This 3 4" x 3 4" NPT slow open natural gas valve is designed to manage pilot ignition and main burner flow with precision. As a veteran preferred HVAC replacement part, it ensures a controlled, gradual gas release to prevent combustion surges and "hard starts" that can