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Thread: Natural gas question
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21-09-2011, 04:09 AM #1
Natural gas question
Hey guys I have another question maybe you can help me.
How many percent of natural gas is needed to start a normal combustion (ignite) a residential furnace for heating?
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24-09-2011, 12:54 AM #2
Re: Natural gas question
Weird question dude. The limits of combustion is 4-14% but that won't matter about starting up a furnace. You usually need to have around 7" of gas pressure at the input to the gas valve (regulator) to drive it properly and which reduces it normally to 3-4" running pressure. Hope that answers it.