size black pipe for the hot water tank and furnace

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littletont

Feb 18, 2008, 12:22 PM

I want to know what is the correct size black pipe is used for the furnace and hot water tank 1/2" and 3/4"

thank you

hvac1000

Feb 18, 2008, 05:49 PM

Depends upon the flow requirements

tsa7man

Feb 19, 2008, 05:56 AM

What is the boiler BTU/hr input rating ??? Look at the ID plate....Your question needs more detail...I assume that you are questioning the water feed pipe size for your boiler (not a furnace)

pelle

Feb 19, 2008, 05:27 PM

If you mean black pipe size for gas fuel line for furnace and tank. We would need disatance from gas meter and btu's.