CSST or Flex connectors thru cabinet

Vern Heiler · 2008-06-10T15:11:41+00:00

With the problem of lightning burning thru the thin wall of CSST, and subsequent bonding requirements now enforced by code officials, is running CSST or flexible gas connectors thru the side of the furnace allowed by mfg's. installation inst?The practice is not a code violation in itself but mfg. instructions trump code. I have seen several installation instructions that state the furnace is designed to be connected with steel pipe, street ells, unions, etc. Kind of vague but none I have seen said run CSST or flexible gas connector straight to the regulator valve.I can't think of a worse place to have a hole punched in the gas line than at the edge of the furnace cabinet. Probably would happen in the middle of the summer, during a lightning storm, and go undetected until the furnace lights for the first time in the fall.98% of the furnaces I see have black pipe extending to the exterior of the furnace cabinet where CSST or other pipe connects. It's the other 2% that I have a problem with. If the majority of mfgs. require using a heavy steel pipe to the exterior, I would like to know.Thanks in advanceVern

Jun 10, 2008 21 Replies

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-zero 18 years ago

... I do.

But what's wrong with a little 'T', nipple and a cap amongst friends anyway? :o)

-zero

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new jersey 18 years ago

"unprotected knockout"? =knockedup + you get proof after 9 months tony

Does that mean if there

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