Furnace vent and air intake


T

Tony Kimmell

Hello,
In the house we have just purchased, there is a brand new Rheem gas
furnace (installed in September of 2003).

Whoever installed it ran the vent and intake pipes out through the
wall right by the gas meter. My concern is that there is no caps or
covers on the end of the pipes, and it would be fairly easy for small
animals to crawl into them and make nests in the blower motor or the
burner area.

The house was built in the late 20's and the original brick chimney
for the old coal-fired furnace is still intact. I do not understand
why they would not have just used this for the vent... but instead
they ran it halfway across the room to the outside wall (the brick
chimney inlet is right next to the furnace). Would it cause any ill
effects to run the vent through the original brick chimney? also is
there any reason the air intake needs to be outside? Can I just have
it suck air in from the basement? I want to get rid of the 2 pipes
and fill in the hole in the foundation.

Any info would be great. Thanks.

Tony Kimmell

To respond to me direct, put a "2" after my last name in my email
address.
 
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C

CBhvac

Tony Kimmell said:
Hello,
In the house we have just purchased, there is a brand new Rheem gas
furnace (installed in September of 2003).

Whoever installed it ran the vent and intake pipes out through the
wall right by the gas meter. My concern is that there is no caps or
covers on the end of the pipes, and it would be fairly easy for small
animals to crawl into them and make nests in the blower motor or the
burner area.

Then you better never run it..the other 20,000 or so that get installed each
year are wrong too....
The house was built in the late 20's and the original brick chimney
for the old coal-fired furnace is still intact. I do not understand
why they would not have just used this for the vent...
You_are_joking______right???


but instead
they ran it halfway across the room to the outside wall (the brick
chimney inlet is right next to the furnace).
That sounds correct..
Would it cause any ill
effects to run the vent through the original brick chimney?

Yup. lots.
also is
there any reason the air intake needs to be outside?
Yup....a couple...
Can I just have
it suck air in from the basement?
You can have it suck anything you want, right is the way it is, and wrong
would be anything else.
I want to get rid of the 2 pipes
and fill in the hole in the foundation.
Again..see above...
Any info would be great. Thanks.
Your welcome..
BTW..leave it alone...sounds like its ok.
 
H

Henry77

Tony Kimmell said:
Hello,
In the house we have just purchased, there is a brand new Rheem gas
furnace (installed in September of 2003).

Whoever installed it ran the vent and intake pipes out through the
wall right by the gas meter. My concern is that there is no caps or
covers on the end of the pipes, and it would be fairly easy for small
animals to crawl into them and make nests in the blower motor or the
burner area.
This is standard procedure for high efficiency furnaces (running them
through the outside wall. As for concern about rodents -DON'T try to put any
cap/screens on these as it would restrict the airflow. While in theory I
guess it is possible (but not probable) this is a standard design used
everywhere with no problems.


he late 20's and the original brick chimney
for the old coal-fired furnace is still intact. I do not understand
why they would not have just used this for the vent... but instead
they ran it halfway across the room to the outside wall (the brick
chimney inlet is right next to the furnace). Would it cause any ill
effects to run the vent through the original brick chimney? also is
there any reason the air intake needs to be outside? Can I just have
it suck air in from the basement? I want to get rid of the 2 pipes
and fill in the hole in the foundation.
NO, NO , NO and HELL NO. One of those pipes is the exhaust - you want your
furnace venting into the basement. Also you can not vent into the chimney as
it is a much cooler temp than a regular furnace and would cause all sorts of
condensation problems and eventually destroy the chimney. Leave the design
alone - it is a sound one.
 
D

Dr. Hardcrab

Leave it alone. No rodents will want to go in there and if you vent it
into the chimney, it will collapse within a year (the chimney that is).

Tell Jimmy I said hey!!!!!
 
J

JB Books

Hello,
In the house we have just purchased, there is a brand new Rheem gas
furnace (installed in September of 2003).

Whoever installed it ran the vent and intake pipes out through the
wall right by the gas meter. My concern is that there is no caps or
covers on the end of the pipes, and it would be fairly easy for small
animals to crawl into them and make nests in the blower motor or the
burner area.

The house was built in the late 20's and the original brick chimney
for the old coal-fired furnace is still intact. I do not understand
why they would not have just used this for the vent... but instead
they ran it halfway across the room to the outside wall (the brick
chimney inlet is right next to the furnace). Would it cause any ill
effects to run the vent through the original brick chimney? also is
there any reason the air intake needs to be outside? Can I just have
it suck air in from the basement? I want to get rid of the 2 pipes
and fill in the hole in the foundation.

Any info would be great. Thanks.

Tony Kimmell

To respond to me direct, put a "2" after my last name in my email
address.
you can run the vent through the chimney but you have to run it all
the way through the chimney not into it. also it may be possible to
pull the intake air from inside the house. youd have to check the
install instructions but it is allowed to be run as a single pipe
system. the last trane 90 i put in had to have a certain volume of air
available but it is like i say permitted. if you put screens on the
intake and outlet you will have enough air flow but depending on your
area and winter it could build ice on the exhaust and freeze over.

be prepared to hear a clamour from the hacks in here but rest assured
they are trolling you. they dont like it when homeowners come in here
and generally abuse those here who do answer them. kids. what can i
say.

jb books
books mechanical
seabridge wi
 
D

DaveinIllinois

Dont let the exhaust drip on the gas meter ; the condensate coming out
is acidic . Also..dont let your dog drink it (if you have a dog).

Some installers often dont pick the best place to terminate the pipes.
 
K

kjpro

JB Books said:
you can run the vent through the chimney but you have to run it all
the way through the chimney not into it. also it may be possible to
pull the intake air from inside the house. youd have to check the
install instructions but it is allowed to be run as a single pipe
system.
Your statement is wrong, it has to be "dual certified" in order to pull
combustion air from with-in the home.

Also, if pulling from inside, the infiltration will increase.
the last trane 90 i put in had to have a certain volume of air
available but it is like i say permitted. if you put screens on the
intake and outlet you will have enough air flow but depending on your
area and winter it could build ice on the exhaust and freeze over.

be prepared to hear a clamour from the hacks in here but rest assured
they are trolling you. they dont like it when homeowners come in here
and generally abuse those here who do answer them. kids. what can i
say.
Just say you are a HACK, and want to be known as the class CLOWN!
jb books
books mechanical
seabridge wi
Where did the NC sig line go?? LOL

--
kjpro
=-_=-_=-_=-_=-_=-_=-_=-_=-_=-_=-_
want it done right the first time.....
.....or pay more to have it done twice?
=-_=-_=-_=-_=-_=-_=-_=-_=-_=-_=-_
 
H

Henry77

One more thing to consider as I know one of our resident idiots will
respond to you eventually saying it is ok to have your air intake inside.
Has your house been weatherproofed since it has been built (insulated , new
windows, weather-stripping , etc ,etc) and if not may it happen in the
future?? Think about it - where will the air come from - do you have a gas
water heater - you want the air backfeeding through the vent (and pulling in
the CO that's in it when the water heater is running). True you could spend
the mucho bucks it would take to run the pipes all the way up through the
chimney but if it is a matter of looks you could always spray paint the
pipes outside to match the exterior of your foundation (I have seen it
locally and it does help blend the pipes into the background). In all
honesty it is the best design and the rodent question is moot -- otherwise
you would hear all sorts of public complaints about it. Heck you had a
better chance of a bird coming down your chimney (we found a well done when
in my chimney when my furnace was replaced.


Henry
 
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H

Henry77

kjpro said:
Your statement is wrong, it has to be "dual certified" in order to pull
combustion air from with-in the home.

Also, if pulling from inside, the infiltration will increase.


Just say you are a HACK, and want to be known as the class CLOWN!
Hey - hold on a minute - DO NOT call him a Class Clown - the Class Clown in
my class was just behind the top of the class (yeah me) so to bestow this
title on our Village Idiot says you think he is smart :-/
 
K

kjpro

Henry77 said:
Hey - hold on a minute - DO NOT call him a Class Clown - the Class Clown in
my class was just behind the top of the class (yeah me) so to bestow this
title on our Village Idiot says you think he is smart :-/
In school our class clowns was the ones that knew nothing but the best
jokes!! :)

--
kjpro
=-_=-_=-_=-_=-_=-_=-_=-_=-_=-_=-_
want it done right the first time.....
.....or pay more to have it done twice?
=-_=-_=-_=-_=-_=-_=-_=-_=-_=-_=-_
 
N

Nuna

kjpro said:
In school our class clowns was the ones that knew nothing but the best
jokes!! :)
Ok - by that definition I guess it fits him - after all I presume he knows
himself :)
 
H

Henry77

Damn piece of crap MS product - ever since I upgraded it using the MS
Update it randomly changes my posting name to my e-mail address name :-/ .
Time to find another newsreader!
 
P

pjm

Free Agent


http://www.forteinc.com/agent/index.php




Damn piece of crap MS product - ever since I upgraded it using the MS
Update it randomly changes my posting name to my e-mail address name :-/ .
Time to find another newsreader!

Paul ( pjm @ pobox . com ) - remove spaces to email me
'Some days, it's just not worth chewing through the restraints.'

HVAC/R program for Palm PDA's
Free demo now available online !! http://pmilligan.net/palm/
Free superheat charts for 38 Ref's online at http://pmilligan.net/pmtherm/
 
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