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 08-12-2009, 03:05 PM   #1
Newbie
 
Join Date: Aug 2009
Posts: 19
Share |
Default

High Efficiency Furnace Combustion and Exhaust


My new 95+ efficiency furnace had new pvc flues for combustion and exhaust added that now go out on the side of the house. The outlet is the same height as my fresh air intake and about 3 feet to the left.

Is there any risk having the fresh air intake and this outlet from the furnace so close?

pirateo is offline   Reply With Quote
Old 08-12-2009, 05:08 PM   #2
Hvac Pro
 
Join Date: Nov 2008
Location: Winnipeg, Canada
Posts: 9,298
Default

High Efficiency Furnace Combustion and Exhaust


3 feet is fine with the code. You need to keep the snow away so the fumes don't swirl back to the intake and watch it on a cold day for recirculation.

yuri is offline   Reply With Quote
Old 08-12-2009, 06:03 PM   #3
Newbie
 
Join Date: Aug 2009
Posts: 19
Default

High Efficiency Furnace Combustion and Exhaust


Quote:
Originally Posted by yuri View Post
3 feet is fine with the code. You need to keep the snow away so the fumes don't swirl back to the intake and watch it on a cold day for recirculation.
Thanks!
pirateo is offline   Reply With Quote
Old 08-13-2009, 07:16 AM   #4
Member
 
Join Date: Sep 2008
Location: Upstate New York
Posts: 368
Default

High Efficiency Furnace Combustion and Exhaust


Not to worry, I've seen them closer and still within the manufacturers install guidelines. Just follow yuri's advice if you live where you get cold and snow as it is not unusal for the intake or exhaust to ice up causing a blockage. Blockages cause a safety lock-out condition where the unit will not fire. If the PVC pipes don't have some large screening on them I would add it as kids and insects are the sworn enemies of those pipes promising to plug them.
dac122 is offline   Reply With Quote
Old 08-13-2009, 08:55 AM   #5
30 year tech
 
hvac122's Avatar
 
Join Date: Dec 2007
Location: Lincoln, Nebraska
Posts: 427
Default

High Efficiency Furnace Combustion and Exhaust


If your in a cold area don't put screen on them as this will freeze up and cause lockouts.
hvac122 is offline   Reply With Quote
Old 08-13-2009, 10:03 AM   #6
Newbie
 
Join Date: Aug 2009
Posts: 19
Default

High Efficiency Furnace Combustion and Exhaust


I was actually wondering about putting a screen over it. I've found a few bugs my blower compartment that came from the pvc.

Would it be okay to have the screen over it in the warm months and then take it off in the winter?
pirateo is offline   Reply With Quote
Old 08-13-2009, 10:48 AM   #7
30 year tech
 
hvac122's Avatar
 
Join Date: Dec 2007
Location: Lincoln, Nebraska
Posts: 427
Default

High Efficiency Furnace Combustion and Exhaust


It would be fine when the unit is not in use.
hvac122 is offline   Reply With Quote
Old 08-13-2009, 10:58 AM   #8
Newbie
 
Join Date: Aug 2009
Posts: 19
Default

High Efficiency Furnace Combustion and Exhaust


Quote:
Originally Posted by hvac122 View Post
It would be fine when the unit is not in use.
Thanks!

pirateo 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
Lennox Furnace G27M Series Unreliable operation: pressure switch or else? sheppard1977 HVAC 7 01-14-2013 05:42 PM
Carrier Furnace help code 31 fauxjaux HVAC 6 04-22-2010 10:36 PM
Payback going from 80% Furnace to 90%+ TheOak HVAC 37 12-02-2008 06:38 AM
Has anyone updated to high efficiency gas furnace? orange HVAC 30 11-20-2008 08:49 AM
Venting high eff. gas furnace through the wall. Prince1 HVAC 17 10-21-2008 11:12 PM




Top of Page | View New Posts

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