Plumbing Forum - Professional & DIY Plumbing Forum > General Plumbing Discussion > Water Heaters and Softeners > Screen in a induced draft WH vent?



Reply
 
Thread Tools Display Modes
Old 03-27-2013, 01:12 PM   #1
tollerplumbing
Junior Member
 
Join Date: Jan 2013
Posts: 3
Default Screen in a induced draft WH vent?

I just had a 3" vent put in for my induced draft water heater.
The manufacturer (State) calls for a screen over the end, but the plumber says they cause more trouble than they prevent.

Any strong opinions either way?



__________________
tollerplumbing is offline  
 
Reply With Quote Quick reply to this message
Old 03-27-2013, 06:48 PM   #2
Caduceus
Senior Member
 
Caduceus's Avatar
 
Join Date: Apr 2011
Location: Pittsburgh, PA
Posts: 940
Liked 198 Times on 144 Posts
Likes Given: 116

Default

Yes, strong opinion here. I don't understand what problem they could cause. Was there an explanation? The screen keeps animals from entering and causing problems. Hornets may also build nests in there, even with the screen in, but the screen is removable to get the little buggers out. Inducer motors and piping don't like dead birds and their nests. Determined rodents can climb or jump into and exhaust pipe when fleeing a predator or looking for warmth.
Also, there is the human-factor. I have taken a variety of balls out of pipes and motors that have no screen. Kids are curious and put balls in pipes. Go figure.
If he is worried about flow resistance causing an air switch to trip, then his concern should be directed more to the number and type of fittings used for the vent.
The screen should never be installed on the interior hub of the last fitting and glued in.
Otherwise, I still don't know of any problems that a screen could cause.
Please ask and let us know. Maybe he has a secret that the plumbing world should be aware of.

__________________

Last edited by Caduceus; 03-27-2013 at 06:51 PM.
Caduceus is offline  
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options

Thread Tools
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Questions about my induced draft WH venting tollerplumbing Water Heaters and Softeners 4 01-31-2013 11:04 PM
Studor vent on vent pipe above roof gquayle General Plumbing Help 4 09-13-2012 02:23 PM
I need to vent SteelyNirvana General Discussion 16 12-16-2011 08:02 PM
Draft Hood Venting syq4ever General Plumbing Help 15 10-28-2011 03:24 PM
Vent ? NTLBM General Plumbing Help 4 01-13-2011 01:11 AM