CSST or Flex connectors thru cabinet

Posted by Vern Heiler on June 11, 2008, 1:04 am

What is the definition of "unprotected knockout"? Does that mean if there
is a rubber grommet, its ok? Still would not stop lightning arc.

>

>> 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.

>

> It *is* against the manufacture's installation instructions and IMC to run

> a flex line through an unprotected knockout.

>

Posted by KJPRO on June 11, 2008, 2:09 am

> What is the definition of "unprotected knockout"?

No grommet to protect against rubbing throught the tubing.

> Does that mean if there is a rubber grommet, its ok?

Yep

> Still would not stop lightning arc.

That's why I use Black Pipe!

Posted by Vern Heiler on June 11, 2008, 8:13 am

Thermo Pride has this statement in the installation. "These furnaces are
set-up to be gas piped through either the left or right side by using a
street elbow and a straight pipe. For the purposes of service, it is
recommended that the gas union be located inside the furnace, when
possible." Do you know if other mfg. have a similar statement?

>

>> What is the definition of "unprotected knockout"?

>

> No grommet to protect against rubbing throught the tubing.

>

>> Does that mean if there is a rubber grommet, its ok?

>

> Yep

>

>> Still would not stop lightning arc.

>

> That's why I use Black Pipe!

>

Posted by Petre on June 11, 2008, 9:58 am

Vern Heiler wrote:

> Thermo Pride has this statement in the installation. "These furnaces are

> set-up to be gas piped through either the left or right side by using a

> street elbow and a straight pipe. For the purposes of service, it is

> recommended that the gas union be located inside the furnace, when

> possible." Do you know if other mfg. have a similar statement?

Wow? Not any of the states I have worked in would allow that, even if it
is manufacturers listing. That comes under Gas codes. How do you turn
off and unhook that beast in a tight enclosure such as in Condo's,
Apartments, Trailer houses..etc?

>>

>>> What is the definition of "unprotected knockout"?

>> No grommet to protect against rubbing throught the tubing.

>>

>>> Does that mean if there is a rubber grommet, its ok?

>> Yep

>>

>>> Still would not stop lightning arc.

>> That's why I use Black Pipe!

>>

>

** Posted from http://www.teranews.com **

Posted by KJPRO on June 11, 2008, 11:06 am

> Vern Heiler wrote:

>> Thermo Pride has this statement in the installation. "These furnaces are

>> set-up to be gas piped through either the left or right side by using a

>> street elbow and a straight pipe. For the purposes of service, it is

>> recommended that the gas union be located inside the furnace, when

>> possible." Do you know if other mfg. have a similar statement?

>

> Wow? Not any of the states I have worked in would allow that, even if it

> is manufacturers listing. That comes under Gas codes. How do you turn off

> and unhook that beast in a tight enclosure such as in Condo's, Apartments,

> Trailer houses..etc?

Simple, you turn the gas cock to the off position and break the black union.
What's so hard about that?