How far can you extend the intake & exhaust for an IBC combo boiler

ChrisWilliams2

The inspector said these lines are too close to the ground and should be higher. The location is bad under a window anyway and also in a walkway. I can relocate it pretty easily to the other side of the house and raise them but my question is how far can the lines be extended from the boiler. The boiler is an IBC

Jamie Hall

I can see why the inspector objected...

The distances will be in the installation manual.

pecmsg

Call the installing contractor and make them run them according to the manual!

EBEBRATT-Ed

all mod cons are different. You have to follow the boiler mfg. instructions

EdTheHeaterMan

I know the rules in New Jersey say that the contractor can not receive payment in full until the work passes inspection. But who follows the rules in NJ. I hope you didn't pay in full yet.

BritoPlumbing

For 2” vent, most IBC only allow 35 feet, and an elbow is a 5-8 feet equivalent. you can find the brochure for each model at IBC.com.
Is the objection because of distance from floor or because it is in high traffic area? Unless there is a more stringent local code, standard US is 12” minimum from floor. Be it that you or the contractor does the change, got to make sure inspector is going to approve.

pecmsg

BritoPlumbing said:

For 2” vent, most IBC only allow 35 feet, and an elbow is a 5-8 feet equivalent. you can find the brochure for each model at IBC.com. Is the objection because of distance from floor or because it is in high traffic area? Unless there is a more stringent local code, standard US is 12” minimum from floor. Be it that you or the contractor does the change, got to make sure inspector is going to approve.

I see an issue with below the window and snow load. Termination may also be an issue. 

mattmia2

You would have to check your local code and the manual but the min height is usually something like 12" above maximum expected snow height.

kcopp

The intake and exhaust also need to be separated by 24". 12" above anticipated snowfall. 12" from a window as a direct vent appliance.

pecmsg

kcopp said:

The intake and exhaust also need to be separated by 24". 12" above anticipated snowfall. 12" from a window as a direct vent appliance.

Operable window and we follow 36” away!

BritoPlumbing

IBC manual calls for 12” minimum from floor and 12” vertical separation between intake and exhaust if not using a concentric or a low profile termination kit.
But what your inspector or local code is calling for is what matters.

kcopp

pecmsg said:

kcopp said:

The intake and exhaust also need to be separated by 24". 12" above anticipated snowfall. 12" from a window as a direct vent appliance.

Operable window and we follow 36” away!

Mfg allow 12" in US installations

pecmsg

kcopp said:

pecmsg said:

kcopp said:

The intake and exhaust also need to be separated by 24". 12" above anticipated snowfall. 12" from a window as a direct vent appliance.

Operable window and we follow 36” away!

Mfg allow 12" in US installations

Its more what the Inspector wants.

neilc

I'm guessing no one is sitting at the table drinking hot chocolate when the burner is running

hot_rod

If it is on a windward side it could create a mess, especially when the exhaust is wet.

Sidewall venting is always a compromise in my mind. Exhaust all thru the roof options, pun intended.