Chimney Liner question


  #1  
Old 12-25-14, 08:17 PM
Z
Member
Thread Starter
Join Date: Dec 2014
Location: United States
Posts: 127
Upvotes: 0
Received 0 Upvotes on 0 Posts
Chimney Liner question

Hi everyone,
Second question of the day......
The new home that my wife and I purchased needs a chimney liner. In the home inspection report, the inspector noted that the clay lining has almost totally failed and needs to be addressed ASAP.
I had a reputable chimney come out to give me an estimate for a stainless steel liner. The owner of the business came out and he looked in the chimney from the basement. He confirmed what the home inspector said, and then spoke about the difference in labor depending on the liner diameter size used. Currently the boiler utilizes a 7 inch exhaust pipe.
He can do the job for $300 less if he uses a 6 inch liner as opposed to a 7 inch liner. Evidently if he goes with the 7, he would need to break up the clay liner and remove it from the basement access hole, a tedious job at best. If he went with the 6 inch, the job would be a very simple process and a huge labor saver.
Would my series 68 Weil McLain (picture included) operate perfectly fine with the 6 inch liner? The chimney guy said it would be fine, BUT he went on to say, check with an "oil guy". I asked one oil tech ( I am not even sure if he was listing to me), and be bristled with a "yeah that's ok). Well is it really ok?

Thanks,
Zack
 
Attached Images  
  #2  
Old 12-25-14, 08:43 PM
lawrosa's Avatar
Super Moderator
Join Date: Dec 2010
Location: Galivants Ferry SC USA
Posts: 18,190
Received 78 Upvotes on 70 Posts
Whats size flue does the boiler have????????
 
  #3  
Old 12-25-14, 08:54 PM
Z
Member
Thread Starter
Join Date: Dec 2014
Location: United States
Posts: 127
Upvotes: 0
Received 0 Upvotes on 0 Posts
Currently it has a 7 inch exhaust
 
  #4  
Old 12-25-14, 09:07 PM
lawrosa's Avatar
Super Moderator
Join Date: Dec 2010
Location: Galivants Ferry SC USA
Posts: 18,190
Received 78 Upvotes on 70 Posts
Currently it has a 7 inch exhaust
Right out of the boiler is 7" ?????
 
  #5  
Old 12-25-14, 10:23 PM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Jersey
Posts: 71,663
Received 3,328 Upvotes on 2,987 Posts
It looks like out of the back for all models is 7" while 5"-7" is used in top venting.
The 368 shows 5" out the top.

weil-mclain/en/multimedia-library/discontinued/boiler/68manual.pdf
 
  #6  
Old 12-26-14, 09:00 AM
NJT's Avatar
NJT
NJT is offline
Member
Join Date: Oct 2006
Location: USA
Posts: 23,538
Upvotes: 0
Received 8 Upvotes on 6 Posts
I believe that a 'one size' reduction is permitted by NFPA codes... but don't take my word for it.

I can't imagine a 114K boiler requiring 7" ... I'm certain that 6" is fine... but it needs to be OK'd by your local building inspectors.

Don't let the chimney guys work without permit and inspections!

I've done business with these guys... good service:

http://www.chimneylinerdepot.com/
 
  #7  
Old 12-27-14, 06:02 AM
rbeck's Avatar
Member
Join Date: Jul 2007
Location: United States
Posts: 2,681
Upvotes: 0
Received 59 Upvotes on 49 Posts
One size reduction is allowable by code providing the vertical height is high enough to allow for the proper draft.
The boiler needs to have at least a -0.02 OF draft. Check with the manufacturer of the liner to verify.
 
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description:
Your question will be posted in: