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gas valve

Paul S_3
Paul S_3 Member Posts: 1,280
On a 90 plus furnace with a differential pressure switch, what is the purpose when the gas valve has a fitting hooked up to the positive side of the pressure switch teed in with the burner compartment?im working on a Bryant 90 plus mod# 398aav036080aaka ive found a bad gas valve and i was just wondering ...ive seen them on other types of equipment Thanks paul s
ASM Mechanical Company
Located in Staten Island NY
Servicing all 5 boroughs of NYC.
347-692-4777
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