Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > HVAC

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 04-30-2011, 07:06 AM   #1
Newbie
 
Join Date: Apr 2011
Posts: 13
Share |
Default

Water evident at pvc joint


Need some help here.I had a new furnace installed about 3 years ago. Everything was fine until this winter. I had 2 new pvc lines ran from the furnace to the outside(fresh air and exhaust)? The problem(s) I am seeing now is that there is water dripping from one of the joints that runs through the garage(horizontal run), and I have water sitting on a joint that comes out of the unit(vertical joint) maybe 2 feet up from the unit itself. It is the same line, just dripping in 2 different spots. If you are looking at the unit,it is the line on the right side. Why is this happening and what needs to be done to correct it? Thanks in advance-Brad

BULLMN11 is offline   Reply With Quote
Old 04-30-2011, 07:32 AM   #2
Hvac Pro
 
Join Date: Nov 2008
Location: Winnipeg, Canada
Posts: 9,058
Default

Water evident at pvc joint


They were not glued properly. If the contractor warranties his work then those fittings should be replaced and glued properly. NOT an easy job to do. I would wait until mid summer when the water inside them has evaporated. Then I would take a hair dryer or heat gun on LOW and warm the joints to evaporate any possible water and slather some PVC glue on the joint. Works 95% of the time. Joint must be completely dry inside and out.

__________________
"Cut it twice and it is still too short".

Last edited by yuri; 04-30-2011 at 07:35 AM.
yuri is offline   Reply With Quote
Old 04-30-2011, 07:48 AM   #3
Veteran Rehabber
 
Join Date: Apr 2011
Location: Ohio
Posts: 60
Arrow

Water evident at pvc joint


Quote:
Originally Posted by BULLMN11 View Post
The problem(s) I am seeing now is that there is water dripping from one of the joints that runs through the garage(horizontal run), and I have water sitting on a joint that comes out of the unit(vertical joint) maybe 2 feet up from the unit itself. It is the same line, just dripping in 2 different spots.
I agree with Yuri. I had the same problem with a 'high efficiency' furnace installed in one of my rental properties. It was installed before I bought the house so no warranty repairs available. Warm air from furnace mixes with cold air from outside and water condenses inside the PVC pipe. The horizontal pipe was not sloped properly and water collected inside. Joints were not glued and water dripped inside the basement. I pulled the pipe and re-set it to slope toward the exterior of the house and glued the joints. I caulked the space around the pipe where it exited the side wall of the house. Problem was solved.
__________________

CMHbob

Visit my blog for latest project and reno tips!
CMHbob is offline   Reply With Quote
Old 04-30-2011, 07:51 AM   #4
Hvac Pro
 
Join Date: Nov 2008
Location: Winnipeg, Canada
Posts: 9,058
Default

Water evident at pvc joint


High efficiency furnaces should have the exhaust pipe drain the water back to the furnace. It can drain outside but it will make icy patches on the ground in very cold climates if it freezes there. If it gets below freezing in the garage then the exhaust pipe should be insulated with 2" Armaflex insulation or whatever size the pipe is so water does not freeeze inside it and eventually plug or restrict it. Can create pressure switch tripping problems also.
__________________
"Cut it twice and it is still too short".

Last edited by yuri; 04-30-2011 at 07:54 AM.
yuri is offline   Reply With Quote
Old 04-30-2011, 07:52 AM   #5
Newbie
 
Join Date: Apr 2011
Posts: 13
Default

Water evident at pvc joint


Quote:
Originally Posted by yuri View Post
They were not glued properly. If the contractor warranties his work then those fittings should be replaced and glued properly. NOT an easy job to do. I would wait until mid summer when the water inside them has evaporated. Then I would take a hair dryer or heat gun on LOW and warm the joints to evaporate any possible water and slather some PVC glue on the joint. Works 95% of the time. Joint must be completely dry inside and out.
I figured it would be something like that. Unfortunately, I had a guy do this as a side job. I will have to give him a call and see if he will fix this. Thanks for the help guys!
BULLMN11 is offline   Reply With Quote
Old 04-30-2011, 08:15 AM   #6
Hvac Pro
 
Join Date: Nov 2008
Location: Winnipeg, Canada
Posts: 9,058
Default

Water evident at pvc joint


Technically you need to put glue in the socket and on the pipe, insert AND twist to get the glue to seal properly. Perhaps he does not know this.
__________________
"Cut it twice and it is still too short".
yuri is offline   Reply With Quote
Old 04-30-2011, 08:36 AM   #7
Newbie
 
Join Date: Apr 2011
Posts: 13
Default

Water evident at pvc joint


Quote:
Originally Posted by yuri View Post
Technically you need to put glue in the socket and on the pipe, insert AND twist to get the glue to seal properly. Perhaps he does not know this.
Gee I hope he would know this. I was told he does this for a living. I do realize there will be "errors" once in a while. It happens. Thanks again!
BULLMN11 is offline   Reply With Quote
Old 04-30-2011, 04:28 PM   #8
Veteran Rehabber
 
Join Date: Apr 2011
Location: Ohio
Posts: 60
Question

Water evident at pvc joint


Quote:
Originally Posted by yuri View Post
High efficiency furnaces should have the exhaust pipe drain the water back to the furnace. It can drain outside but it will make icy patches on the ground in very cold climates if it freezes there.
I did not want the water to drain back into the furnace because I was afraid it would cause rust or damage the internal mechanisms. I am willing to trade a little ice in a flower bed for a $5000 furnace. Am I missing something?
__________________

CMHbob

Visit my blog for latest project and reno tips!
CMHbob is offline   Reply With Quote
Old 04-30-2011, 04:33 PM   #9
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 24,531
Default

Water evident at pvc joint


One winter, you'll have no heat because the water will have frozen at the terminal of the pipe.

As the ice first builds up though, it will cause the furnace to burn dirty and may or may not cause sooting in it. Sooting in a 90%plus furnace is never good.
beenthere is offline   Reply With Quote
Old 04-30-2011, 04:41 PM   #10
Veteran Rehabber
 
Join Date: Apr 2011
Location: Ohio
Posts: 60
Default

Water evident at pvc joint


Thanks BeenThere - I learn something new every day...
__________________

CMHbob

Visit my blog for latest project and reno tips!
CMHbob is offline   Reply With Quote
Old 04-30-2011, 04:58 PM   #11
Hvac Pro
 
Join Date: Nov 2008
Location: Winnipeg, Canada
Posts: 9,058
Default

Water evident at pvc joint


Your furnace has an internal drain mechanism. The water flows back into a drain hose which goes directly into the condensate trap and out to the floor drain or cond pump. I would re-slope it B4 problems occur.

__________________
"Cut it twice and it is still too short".
yuri is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Low hot water pressure crebive Plumbing 38 02-26-2013 12:26 AM
Water Inside/Around American Standard Furnace michrob HVAC 8 12-08-2011 03:51 PM
Solar hot water indatom123 Green Home Improvement 0 12-19-2010 12:01 AM
Low/No Hot Water Pressure after changing Elements Onehipcat Plumbing 18 08-05-2010 09:16 AM
water line joint leak dtzulu Plumbing 4 05-14-2009 09:18 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.