Hi,
I recently bought a house with a guest house in the back. There is a gas line outside the back of the guest house that feeds a direct-vent wall furnace. The connection goes from black iron gas pipe to a flexible "corrugated" gas line, but THEN goes through the wall from the outside to the inside, then connects to the furnace.
Recently, the local Gas company was out and noted that the connection from the outside to the inside using a flexible gas line through the wall was not allowed according to code - not at all unreasonable by the way.
I went to the furnace manufacturers' website and their installation instructions indicated that rigid pipe should be used all the way to the gas valve, with a "ground joint union" used to connect to the gas line where threading into the existing pipe was not possible.
My question is: Could I just continue the rigid pipe from the outside to the inside of the house, and THEN use a flexible gas line from the end of the rigid gas pipe to the gas valve? That's how the stove and water-heater are plumbed - it seems to me that the issue is that the flexible gas line should not be on the exterior (not as durable) nor should it be in the wall (hidden, potential for punctures, etc.) But once the rigid line is terminated properly inside the house, a short flex line to the gas valve in the furnace should be okay.
Does anyone disagree?
Thanks,
Ron
I recently bought a house with a guest house in the back. There is a gas line outside the back of the guest house that feeds a direct-vent wall furnace. The connection goes from black iron gas pipe to a flexible "corrugated" gas line, but THEN goes through the wall from the outside to the inside, then connects to the furnace.
Recently, the local Gas company was out and noted that the connection from the outside to the inside using a flexible gas line through the wall was not allowed according to code - not at all unreasonable by the way.
I went to the furnace manufacturers' website and their installation instructions indicated that rigid pipe should be used all the way to the gas valve, with a "ground joint union" used to connect to the gas line where threading into the existing pipe was not possible.
My question is: Could I just continue the rigid pipe from the outside to the inside of the house, and THEN use a flexible gas line from the end of the rigid gas pipe to the gas valve? That's how the stove and water-heater are plumbed - it seems to me that the issue is that the flexible gas line should not be on the exterior (not as durable) nor should it be in the wall (hidden, potential for punctures, etc.) But once the rigid line is terminated properly inside the house, a short flex line to the gas valve in the furnace should be okay.
Does anyone disagree?
Thanks,
Ron