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HVAC Discussions - Heating, ventilation and air conditioning.
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Posted by Bob Pietrangelo on February 20, 2007, 4:26 pm
: quoted-printable
We are getting ready to do a custom home with 4 Geo systems. Tight =
Icynene house. We are putting in an ERV, possibly 2. The builder asked =
me about soemthing I wasn't very sure about. Is there an ERV system =
that batroom exhausts get fed back into. I have googled and didn't =
really see anything. I would just be afraid of the mixing of bathroom =
gasses with make up air.
--=20
Bob Pietrangelo
bobp3@comcast.net (home)
bob@comfort-solution.biz (work)
www.comfort-solution.biz
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<DIV>We are getting ready to do a custom home with 4 Geo systems. =
Tight=20
Icynene house. We are putting in an ERV, possibly 2. The =
builder=20
asked me about soemthing I wasn't very sure about. Is there an ERV =
system=20
that batroom exhausts get fed back into. I have googled and didn't =
really=20
see anything. I would just be afraid of the mixing of bathroom =
gasses with=20
make up air.</DIV><FONT color=3D#008000>
<DIV><BR><FONT color=3D#000000>-- <BR>Bob Pietrangelo<BR></FONT><A=20
color=3D#000000>bobp3@comcast.net</FONT></A><FONT color=3D#000000>=20
color=3D#000000>bob@comfort-solution.biz</FONT></A><FONT =
color=3D#000000>=20
(work)</FONT><BR><A=20
href=3D"http://www.comfort-solution.biz">www.comfort-solution.biz</A></DI=
V>
<DIV> </DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV><BR></FONT> </DIV></BODY></HTML>
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Posted by Bob Pietrangelo on February 20, 2007, 5:06 pm
: quoted-printable
We are getting ready to do a custom home with 4 Geo systems. Tight =
Icynene house. We are putting in an ERV, possibly 2. The builder asked =
me about soemthing I wasn't very sure about. Is there an ERV system =
that batroom exhausts get fed back into.=20
I found some info on piping the Bath exhausts directly into the ERV, =
does that mean that it no longer gets connected to the return ducting. =
I am having multiple zones with a common return. I do not understand =
why you would do this.
I have googled and didn't really see anything. I would just be =
afraid of the mixing of bathroom gasses with make up air.
--=20
Bob Pietrangelo
bobp3@comcast.net (home)
bob@comfort-solution.biz (work)
www.comfort-solution.biz
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charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=3DContent-Type content=3D"text/html; =
charset=3Diso-8859-1">
<META content=3D"MSHTML 6.00.2900.3059" name=3DGENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV> </DIV>
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #008000 2px solid; MARGIN-RIGHT: 0px">
<DIV>We are getting ready to do a custom home with 4 Geo =
Icynene house. We are putting in an ERV, possibly 2. The =
builder=20
asked me about soemthing I wasn't very sure about. Is there an =
ERV=20
system that batroom exhausts get fed back into. </DIV>
<DIV> </DIV>
<DIV><FONT color=3D#008000>I found some info on piping the Bath =
directly into the ERV, does that mean that it no longer gets connected =
to the=20
return ducting. I am having multiple zones with a common =
return. I=20
do not understand why you would do this.</FONT></DIV>
<DIV> </DIV>
<DIV> I have googled and didn't really see anything. I =
be afraid of the mixing of bathroom gasses with make up =
air.</DIV><FONT=20
color=3D#008000>
<DIV><BR><FONT color=3D#000000>-- <BR>Bob Pietrangelo<BR></FONT><A=20
color=3D#000000>bobp3@comcast.net</FONT></A><FONT color=3D#000000>=20
color=3D#000000>bob@comfort-solution.biz</FONT></A><FONT =
color=3D#000000>=20
(work)</FONT><BR><A=20
href=3D"http://www.comfort-solution.biz">www.comfort-solution.biz</A></DI=
V>
<DIV> </DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV><BR></FONT> </DIV></BLOCKQUOTE></BODY></HTML>
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Posted by Noon-Air on February 20, 2007, 11:32 pm
: quoted-printable
Bob,
Check the code books for ventilation and RA ductwork. I seem to remember =
seeing something about bathrooms not having anything other than a simple =
fart fan that exhausts to the outside, and/or conditioned air supply. I =
think it had to do with sanitary issues.=20
I could be wrong.... but it couldn't hurt to double check.
We are getting ready to do a custom home with 4 Geo systems. Tight =
Icynene house. We are putting in an ERV, possibly 2. The builder asked =
me about soemthing I wasn't very sure about. Is there an ERV system =
that batroom exhausts get fed back into.=20
I found some info on piping the Bath exhausts directly into the ERV, =
does that mean that it no longer gets connected to the return ducting. =
I am having multiple zones with a common return. I do not understand =
why you would do this.
I have googled and didn't really see anything. I would just be =
afraid of the mixing of bathroom gasses with make up air.
--=20
Bob Pietrangelo
bobp3@comcast.net (home)
bob@comfort-solution.biz (work)
www.comfort-solution.biz
------=_NextPart_000_000E_01C7553E.FB3FBC60
Content-Type: text/html;
charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=3DContent-Type content=3D"text/html; =
charset=3Diso-8859-1">
<META content=3D"MSHTML 6.00.6000.16414" name=3DGENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>Check the code books for ventilation =
and RA=20
ductwork. I seem to remember seeing something about bathrooms not =
having=20
anything other than a simple fart fan that exhausts to the outside, =
and/or=20
conditioned air supply. I think it had to do with sanitary issues. =
</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>I could be wrong.... but it couldn't =
hurt to double=20
check.</FONT></DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV>"Bob Pietrangelo" <<A=20
=
MVV7UbYnZ2dnUVZ_sudnZ2d@comcast.com</A>...</DIV>
<DIV><FONT color=3D#008000></FONT> </DIV>
<DIV> </DIV>
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #008000 2px solid; MARGIN-RIGHT: 0px">
<DIV>We are getting ready to do a custom home with 4 Geo =
Tight Icynene house. We are putting in an ERV, possibly =
2. The=20
builder asked me about soemthing I wasn't very sure about. Is =
there an=20
ERV system that batroom exhausts get fed back into. </DIV>
<DIV> </DIV>
<DIV><FONT color=3D#008000>I found some info on piping the Bath =
directly into the ERV, does that mean that it no longer gets =
connected to=20
the return ducting. I am having multiple zones with a common=20
return. I do not understand why you would do =
this.</FONT></DIV>
<DIV> </DIV>
<DIV> I have googled and didn't really see anything. I =
be afraid of the mixing of bathroom gasses with make up =
air.</DIV><FONT=20
color=3D#008000>
<DIV><BR><FONT color=3D#000000>-- <BR>Bob Pietrangelo<BR></FONT><A=20
color=3D#000000>bobp3@comcast.net</FONT></A><FONT color=3D#000000>=20
color=3D#000000>bob@comfort-solution.biz</FONT></A><FONT =
color=3D#000000>=20
(work)</FONT><BR><A=20
href=3D"http://www.comfort-solution.biz">www.comfort-solution.biz</A></DI=
V>
<DIV> </DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV><BR></FONT> </DIV></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>
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Posted by Thermal Guy on February 20, 2007, 11:21 pm
>We are getting ready to do a custom home with 4 Geo systems. Tight =
>Icynene house. We are putting in an ERV, possibly 2. The builder asked =
>me about soemthing I wasn't very sure about. Is there an ERV system =
>that batroom exhausts get fed back into. I have googled and didn't =
>really see anything. I would just be afraid of the mixing of bathroom =
>gasses with make up air.
Well, it might depend on your part of the country. In the hot-humid
part, where I live, you really want to exhaust bathroom air straight
outside and not try to recover anything from it. The reason being that
you don't want that humidity put back into the incoming air stream.
So, around here, you'll typically not connect your ERV to the main
HVAC, and you won't be putting exhaust vents in bathrooms or other
humid locations.
Now, in a cold/dry climate, I can see where you might well want that
heat and humidity, so you could make a case for placing ERV exhaust
vents in the bathrooms. But, I would think you'd want to make sure
your bathroom exhaust goes outside, and let the ERV transfer the
heat/humidty to some fresh, incoming outside air.
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Posted by -zero on February 20, 2007, 11:46 pm
<snip>
>> Now, in a cold/dry climate, I can see where you might well want that
> heat and humidity, so you could make a case for placing ERV exhaust
> vents in the bathrooms. But, I would think you'd want to make sure
> your bathroom exhaust goes outside, and let the ERV transfer the
> heat/humidty to some fresh, incoming outside air.
How do you transfer the humidity?
-zero
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