DIY Home Improvement Forum banner

1 - 7 of 7 Posts

·
Registered
Joined
·
134 Posts
Discussion Starter #1
I have a self installed Goodman GMNT-100 that has been running great for serveral years. The gas line connection to the furnace is a flexible connector running through the appliance housing. The flex line is protected by the grommet provided by Goodman.

Is this installation a code violation of the national gas code? I don't know what the local rules are and will have to inquire.
 

·
Hvac Pro
Joined
·
23,372 Posts
It is illegal where I am. Connector must be straight and outside the cabinet where I am or done with 3 elbows in what we call a swing joint. Not sure about your local code but we do see it from time to time inside cabinets and bent like a dog's hind leg on this site/pics. Usually because it was never inspected or a permit taken out I imagine. You could have problems with your house insurance if it leaked or caused a fire/explosion and was never inspected or done to code. Ignorance of the law/codes is no excuse.
 

·
Registered
Joined
·
1,104 Posts
Not good, it should be hard piped with a union..about the only things that have flex lines are appliances that need to be slid in and out of place, and the flex pipe is outside of the appliance shell...
 

·
Hvac Pro
Joined
·
23,372 Posts
Flex lines are still approved but they must have a CGA/AGA UL approved sticker and be one piece stainless steel with a nylon coating. They can bend to follow the shape of a gas water heater but must be straight and level horizontally.

Clothes dryers and stoves can have 3 foot long stainless types but those are specialty items.
 

·
Registered
Joined
·
134 Posts
Discussion Starter #5
Thanks guys. I'll see what the local inspector says.
I do know that most installations here are hard piped all the way to the gas valve.
 

·
Hvac Pro
Joined
·
23,372 Posts
This is mine. Notice the 3 elbows. That is because our floors can move up and down/crack because we sit on clay which swells. Some areas you can go straight in.

On my Sister's furnace I went across the top with a connector because the gas line was on the right side of the furnace and could not be altered.
 

Attachments

1 - 7 of 7 Posts
Top