Another HVAC Location Question - AVS Forum
Forum Jump: 
 
Thread Tools
Old 06-12-2013, 09:21 AM - Thread Starter
Member
 
themarkkram's Avatar
 
Join Date: Dec 2007
Posts: 80
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Hello Everyone -

This question is specific to the placement of the HVAC return. Most theaters I have seen on here have their return located under the soffit, rather than on the riser of the soffit. Is there a particular reason for this? I have the option to do either, but I would think that the best performance may be on the riser part of the soffit.

Many thanks!

I Cannot Wait!

The name of my build says it all.
themarkkram is offline  
Sponsored Links
Advertisement
 
Old 06-12-2013, 09:30 AM
AVS Club Gold
 
SierraMikeBravo's Avatar
 
Join Date: Mar 2007
Location: Topeka, KS
Posts: 1,604
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 88 Post(s)
Liked: 65
By riser I assume you mean side of the soffit? Anyway...answer...warm air rises. tongue.gif. Really, it doesn't matter.

Shawn Byrne
Erskine Group
CEDIA Certified Professional EST II - HAA Level III Certified -THX Certified Professional

Design-Video & Audio Calibration Information

The original Pro Theater Layout
SierraMikeBravo is offline  
Old 06-12-2013, 01:33 PM
AVS Special Member
 
J_P_A's Avatar
 
Join Date: Dec 2008
Location: L.A. - Lower Alabama
Posts: 4,174
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 283 Post(s)
Liked: 269
I've been considering putting my return on the bottom face of my soffit because I'll be able to make it much larger in order to get the velocity down.

Dude, are you made of leprechauns? Cause that was awesome!

The Plains Theater Has Begun
J_P_A is offline  
Old 06-12-2013, 02:43 PM
AVS Club Gold
 
SierraMikeBravo's Avatar
 
Join Date: Mar 2007
Location: Topeka, KS
Posts: 1,604
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 88 Post(s)
Liked: 65
There is no forced air in the return. It is recommended to have a similar sized for the return for aesthetics and volume. They don't have to be though.

Shawn Byrne
Erskine Group
CEDIA Certified Professional EST II - HAA Level III Certified -THX Certified Professional

Design-Video & Audio Calibration Information

The original Pro Theater Layout
SierraMikeBravo is offline  
Old 06-13-2013, 10:26 AM
AVS Special Member
 
J_P_A's Avatar
 
Join Date: Dec 2008
Location: L.A. - Lower Alabama
Posts: 4,174
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 283 Post(s)
Liked: 269
It's not uncommon for theaters here to have a powered inline fan in the return. I'm dealing with that issue in my theater now, I think the Black Cat Theater used inline fans in both the supply and return, and I believe NicksHitachi's theater and Moggie's theater had similar issues, but I can't swear to it. Those are just a few that come to mind when I start thinking about inline fans.

At any rate, Shawn is correct (was there ever any doubt smile.gif ), with no "powered" return you shouldn't have an issue if the return grill is the same size as the inlet, assuming the inlet is quiet and you have a balanced system.

Dude, are you made of leprechauns? Cause that was awesome!

The Plains Theater Has Begun
J_P_A is offline  
Old 06-14-2013, 04:35 AM
AVS Special Member
 
Elill's Avatar
 
Join Date: Dec 2007
Location: Sydney, Australia
Posts: 1,469
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 19 Post(s)
Liked: 22
I'm going to use one of these:


Peter the Greek

Downunder Theatre MkII
Redefining snail pace construction
"what is worth knowing is difficult to learn"

Elill is offline  
Old 06-14-2013, 11:18 AM - Thread Starter
Member
 
themarkkram's Avatar
 
Join Date: Dec 2007
Posts: 80
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
I have 2 deadvents (one supply and one return) that will each have an inline fan, probably Fantech.

I Cannot Wait!

The name of my build says it all.
themarkkram is offline  
Old 06-14-2013, 04:46 PM
235
Senior Member
 
235's Avatar
 
Join Date: Dec 2011
Location: Winnipeg
Posts: 490
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Liked: 21
Make sure the surface area of your vent is at least as big as that of your soffit. That will often push you towards putting the vent on the underside of the soffit.
235 is offline  
 
Thread Tools


Forum Jump: 

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