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    don1954 Posts: 1, Reputation: 1
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    Jan 6, 2012, 10:57 AM
    Gas valve size for Tappan furnace
    I have a Tappan forced hot air system model # GUF 105 D E5
    It's a 105,000 BTU size. A repair man said the exhaust output was 4000 units and it should be around 100 units. He replaced the gas valve with one he had in his truck and I think it's the wrong size. He adjusted the valve somehow and got the exhaust reading to 200 units. Is it the wrong valve? It's a Honeywell #VR8300A4508. It looks like most valve sizes are for 150,000 BTU units. Is this right?

    Thanks,
    Don
    (I hate to get ripped off)

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