and small air handlers that operate on 277V power

the module attempts to light the burner once

The normally closed configuration ensures the valve remains shut when de-energized

Broad Compatibility: Works natively with Penn A419

High Flow Efficiency: The 5

Dwyer Instruments 475-2-FM Manometer 326058-758 and small air handlers thatFor veteran HVACR technicians and industrial contractors, the Dwyer Instruments 475 2 FM Manometer is the trade standard for measuring differential pressure in demanding environments. This intrinsically safe digital manometer is FM approved for use in hazardous locations (Class 1, Div. 2, Groups A, B, C, D, T4), making it the go to tool for monitoring natural gas pressure on boilers and combustion equipment. With a versatile range of 0 to 40. 00" w.