or visible bulging in the associated run capacitor

it is a safety valve designed to "pop" fully open once the 15 PSI set point is reached

which may bypass safety limits or prevent the heater from firing entirely

it is excellent for suction service due to its low 1 PSI pressure differential requirement for full operation

The Johnson Controls VG7241RT+7152G is rated for fluid temperatures ranging from 35°F to 284°F (2°C to 140°C)

Lochinvar & A.O. Smith 100265150 Ignitor 318820-201 or visible bulging in theThe Lochinvar & A. O. Smith 100265150 Ignitor is a critical OEM replacement component engineered specifically for high output FB 1501 2001 gas boiler models. As a veteran grade hot surface igniter (HSI), this part provides the consistent electrical discharge required to initiate combustion within the burner assembly. This specific Lochinvar 100265150 kit includes the necessary high temperature gasket to ensure a pressurized seal, preventing flue gas