Thread: Flexible gas line too long?

Hey guys! This is two different pictures of two different houses. In both houses the yellow flexible gas line is over 6 feet. Now I know in school they taught us that these yellow flexible gas lines should be going through walls and also shouldn't be longer than six feet. So my question is is this something you would normally write up in your report or is it nothing serious just an old rule or something? Thanks ahead of time guys !!!!!

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About the only not wrong in those photos is the length! or should that be

You are thinking of flexible gas connectors (limited to 6 feet in length, I think they come in 3 foot and 6 foot lengths), not flexible gas piping (which comes in long rolls, and is allowed to run as long as the design works out that it can for the gas system design.

Originally Posted by Jerry Peck

About the only not wrong in those photos is the length! or should that be

You are thinking of flexible gas connectors (limited to 6 feet in length, I think they come in 3 foot and 6 foot lengths), not flexible gas piping (which comes in long rolls, and is allowed to run as long as the design works out that it can for the gas system design.

Lol well please.... help the young guy out what else is wrong here ?!

That is CSST (or similar). Used instead of hard pipe. Needs support. Search for GasTite or CSST and download the manual.

Wow! Check out pic #2. The bonding clamp is directly on the tubing. Totally wrong and hazardous. That entire installation of CSST is suspect after seeing that.

- Download the CSST installation manual
- Read it
- Reference page numbers in your report where it shows the installation is non-compliant with installation instructions
- Attach the manual to your report
You really only need to read the manual a couple times, make notes and then you'll have the typical defect info for future reports. It's always the same few issues.

wow!! Thanks guys!!

Originally Posted by Aaron Scheuerer

Lol well please.... help the young guy out what else is wrong here ?!

Just got back to my office ... and I see others have taken care of your request.

Originally Posted by Jerry Peck

Just got back to my office ... and I see others have taken care of your request.

Thanks for your help anyway Jerry!!

Also, Google "CSST tubing lightening" and let your client know the risks.
Big law suits out there!

Is that aluminum bonding wire to clamp? Or is it copper. Not sure if the flash from camera makes the wire look silver.

Originally Posted by Raymond Wand

Is that aluminum bonding wire to clamp? Or is it copper. Not sure if the flash from camera makes the wire look silver.

It's definitely aluminum binding wire sir

Aaron, these guys are all over this. The CSST gas line is to be grounded/bonded in front of the first CSST joint, not only is the bonding clamp not suppose to be on the stainless steel tubing, it needs to be on the black iron pipe out at the gas meter in front of the first joint where ever that is located. Also the yellow sheath is not to be cut back to expose the tubing. The sheath needs to be inside the connector. Not very good workmanship and wrong bonding location!

Aaron is located here in NJ; this is what I attached to every report where there's no bonding.

"What else is wrong here?"

Can we criticize the awful HVAC supply header?

What of an attic wall with no insulation? And can we define "attic wall" and demand R30, since there is plenty of space to build out the wall?

Before typing this reply, I added to 2010 dead conversation, training to become an energy auditor.

At least in Portland, Oregon, home inspectors are getting into enforcement of home energy efficiency. Let's do it right.

Two things:
Bonding clamp cannot be on CSST but must be on a hard pipe section such as the manifold.
And only two "valleys" are allowed to be exposed past the connector when the sheathing is stripped back.

And CSST can pass through a wall but cannot disappear in a wall or floor chase, etc., and emerge somewhere else. It must be completely visible.

Originally Posted by Lon Henderson

And CSST can pass through a wall but cannot disappear in a wall or floor chase, etc., and emerge somewhere else. It must be completely visible.

I'm not from Missouri, but ... show me (where that is stated).

Guess I have a couple questions on this too, don't see that they have been addressed in this post yet?? I understand the bonding issue and the sheathing cut back issue, but what about sizing and drip legs?? Which one of these lines is feeding the manifold? It appears they are all pretty equal in size which would mean no one sized the supply portion to accommodate the number of runs coming off the manifold?? It would seem that if one appliance is running and others come on your going to short change the weakest one of gas? Is that an issue or not?? Also the photo of the furnace does not have a drip leg installed on the solid pipe just before entry to the box. Around here we get about 75% of contractors that do install legs and about 25% that would rather spend 3 days and a lunch to argue whether they "really" do anything or not! Just curious on thoughts from other areas.

Thanks

Originally Posted by Patrick Hartshorn

Guess I have a couple questions on this too, don't see that they have been addressed in this post yet?? I understand the bonding issue and the sheathing cut back issue, but what about sizing and drip legs??

First, you are referring to sediment traps, not drip legs, correct? If so, the correct terminology stops many misunderstandings, and many field disputes when a contractor says that a drip leg is not required and an inspector say a drip leg is required (contractor would likely be correct) ... however, if the inspector had said sediment trap then the contractor would be incorrect).

Which one of these lines is feeding the manifold?

Likely the one on the left being crushed by the bonding clamp.

You would need to review the gas design drawing to know the answer to your question, or maybe be able to see which goes back toward the supply and which continues on toward appliances.

It appears they are all pretty equal in size which would mean no one sized the supply portion to accommodate the number of runs coming off the manifold??

You would need to review the gas design drawing to know that.

It would seem that if one appliance is running and others come on your going to short change the weakest one of gas? Is that an issue or not??

Depends, you would need to review the design drawing and all of the appliances.

Also the photo of the furnace does not have a drip leg installed on the solid pipe just before entry to the box. Around here we get about 75% of contractors that do install legs and about 25% that would rather spend 3 days and a lunch to argue whether they "really" do anything or not! Just curious on thoughts from other areas.

I see what looks to be a tee, with a short nipple coming out the bottom with a cap on it - that would be the sediment trap - look close and I think you will see it.

Would a bond jumper strap be allowable in NFPA 54 Sec 7.13.?

I see that little sediment nipple on the furnace. I thought the UPC 1212.7 required it to be a 3" nipple.
How about protecting that CSST at the wall where it is next to the sheetrock behind the ROMEX. That's where I want to drive a nail!!

Robert,
I don't understand what a bonding jumper would jump to.

Originally Posted by Gary Burnett

I see that little sediment nipple on the furnace. I thought the UPC 1212.7 required it to be a 3" nipple.
How about protecting that CSST at the wall where it is next to the sheetrock behind the ROMEX. That's where I want to drive a nail!!

Robert,
I don't understand what a bonding jumper would jump to.

Sorry Gary. I was using my tablet on the road and the images are small. I did not see that the manifold is not connected to a gas pipe. Poor installations.
Disregard my comments.

Originally Posted by Gary Burnett

I see that little sediment nipple on the furnace. I thought the UPC 1212.7 required it to be a 3" nipple.
How about protecting that CSST at the wall where it is next to the sheetrock behind the ROMEX. That's where I want to drive a nail!!

All up to speed.
Good call on the flex pipe proximity to drywall.
The sediment nipple call is close. How long are pipe caps fittings?
Not being there does have its disadvantages.