Is my power vent water heater flue safe?

Reply

  #1  
Old 05-26-18, 06:27 AM
B
Member
Thread Starter
Join Date: Jun 2008
Location: Loudoun County, VA
Posts: 189
Received 0 Votes on 0 Posts
Is my power vent water heater flue safe?

My house has a power vent water heater, and I'm concerned about the little yellow vinyl cap on the coupling (between the vent fan and PVC flue) in this picture:

Name:  IMG_2677.jpg
Views: 145
Size:  37.8 KB

If I pull the cap off when the water heater is running exhaust gas comes out. Three people have seen this and not been particularly bothered by it (installer, home inspector, furnace guy) but this still gives me the willies. It seems like all that stands between me and flue gas (carbon monoxide) is this press-on vinyl cap. Is this really ok, and if not what's the correct way to seal off this port?

As a side note, for some reason the flue for the water heater (which is PVC all the way) runs all the way up through the roof of the house, rather than out the basement wall like the furnace intake/exhaust.
 
Sponsored Links
  #2  
Old 05-26-18, 08:42 AM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Northern NJ - USA
Posts: 59,253
Received 1,122 Votes on 1,042 Posts
That's a test port. Very low pressure in the exhaust so it's extremely unlikely that cap would pop off. They make rubber caps with clamps or you can put a small worm drive clamp on there. Just slightly tighten it.

Name:  wdc.jpg
Views: 56
Size:  20.2 KB
 
Reply
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


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