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Code question - venting .p.jm 12-04-2007
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Posted by on December 4, 2007, 12:29 pm
Someone asked me this, and I want confirm my answer -

Question - Given a new gas furnace ( apparently condensing type from
the description, no model given ), is it EVER acceptable to route the
exhaust pipe such that it terminates directly under the kitchen window
? Thus causing the window to steam up on the outside ( condensation )
every time the unit runs ?

My answer was 'No, and you need to shut it off until it's fixed / done
right, that's a deadly hazaard'. Any argument ?


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Paul ( pjm @ pobox . com ) - remove spaces to email me
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Posted by -zero on December 4, 2007, 2:16 pm

> Someone asked me this, and I want confirm my answer -
>
> Question - Given a new gas furnace ( apparently condensing type from
> the description, no model given ), is it EVER acceptable to route the
> exhaust pipe such that it terminates directly under the kitchen window
> ? Thus causing the window to steam up on the outside ( condensation )
> every time the unit runs ?
>
> My answer was 'No, and you need to shut it off until it's fixed / done
> right, that's a deadly hazaard'. Any argument ?

With ALL disregard to ANY authority having jurisdiction...? if the window
is non-opening ( glass block, fixed pane, etc.), it's a plausible option and
could
be easily negotiated through some Building Department's brightest, with all
other unknowns not being considered mind you.
If it is hinged and designed as operable, all bets are off and it would
be a definite no-go. IMO.

-zero



Posted by on December 4, 2007, 3:21 pm
On Tue, 4 Dec 2007 14:16:00 -0500, "-zero"

>
>> Someone asked me this, and I want confirm my answer -
>>
>> Question - Given a new gas furnace ( apparently condensing type from
>> the description, no model given ), is it EVER acceptable to route the
>> exhaust pipe such that it terminates directly under the kitchen window
>> ? Thus causing the window to steam up on the outside ( condensation )
>> every time the unit runs ?
>>
>> My answer was 'No, and you need to shut it off until it's fixed / done
>> right, that's a deadly hazaard'. Any argument ?
>
> With ALL disregard to ANY authority having jurisdiction...? if the window
>is non-opening ( glass block, fixed pane, etc.), it's a plausible option and
>could
>be easily negotiated through some Building Department's brightest, with all
>other unknowns not being considered mind you.
> If it is hinged and designed as operable, all bets are off and it would
>be a definite no-go. IMO.

        AFAIK, regular OPERABLE kitchen window. I asked the guy '
what if your Mom opens the window to let some fresh air in, what do
you figure happnes ?', and he didn't say anything about 'the window
doesn't open'.

        Tks. His Dad is getting the inspector to check it out - also
to make sure permits were pulled by the contractor, etc.



>
>-zero
>

--
Click here every day to feed an animal that needs you today !!!
http://www.theanimalrescuesite.com/

Paul ( pjm @ pobox . com ) - remove spaces to email me
'Some days, it's just not worth chewing through the restraints.'
'With sufficient thrust, pigs fly just fine.'
HVAC/R program for Palm PDA's
Free demo now available online http://pmilligan.net/palm/

Posted by -zero on December 4, 2007, 3:58 pm

> On Tue, 4 Dec 2007 14:16:00 -0500, "-zero"
>
>>
>>> Someone asked me this, and I want confirm my answer -
>>>
>>> Question - Given a new gas furnace ( apparently condensing type from
>>> the description, no model given ), is it EVER acceptable to route the
>>> exhaust pipe such that it terminates directly under the kitchen window
>>> ? Thus causing the window to steam up on the outside ( condensation )
>>> every time the unit runs ?
>>>
>>> My answer was 'No, and you need to shut it off until it's fixed / done
>>> right, that's a deadly hazaard'. Any argument ?
>>
>> With ALL disregard to ANY authority having jurisdiction...? if the
>> window
>>is non-opening ( glass block, fixed pane, etc.), it's a plausible option
>>and
>>could
>>be easily negotiated through some Building Department's brightest, with
>>all
>>other unknowns not being considered mind you.
>> If it is hinged and designed as operable, all bets are off and it would
>>be a definite no-go. IMO.
>
> AFAIK, regular OPERABLE kitchen window. I asked the guy '
> what if your Mom opens the window to let some fresh air in, what do
> you figure happnes ?', and he didn't say anything about 'the window
> doesn't open'.
>
> Tks. His Dad is getting the inspector to check it out - also
> to make sure permits were pulled by the contractor, etc.

Cool. You never know when you've saved someone from an awful
tragedy. Hopefully, in success of that, we will never find out.

-zero



Posted by Joseph on December 4, 2007, 11:45 pm
>
>> On Tue, 4 Dec 2007 14:16:00 -0500, "-zero"
>>
>>>
>>>> Someone asked me this, and I want confirm my answer -
>>>>
>>>> Question - Given a new gas furnace ( apparently condensing type from
>>>> the description, no model given ), is it EVER acceptable to route the
>>>> exhaust pipe such that it terminates directly under the kitchen window
>>>> ? Thus causing the window to steam up on the outside ( condensation )
>>>> every time the unit runs ?
>>>>
>>>> My answer was 'No, and you need to shut it off until it's fixed / done
>>>> right, that's a deadly hazaard'. Any argument ?
>>>
>>> With ALL disregard to ANY authority having jurisdiction...? if the window
>>>is non-opening ( glass block, fixed pane, etc.), it's a plausible option and
>>>could
>>>be easily negotiated through some Building Department's brightest, with all
>>>other unknowns not being considered mind you.
>>> If it is hinged and designed as operable, all bets are off and it would
>>>be a definite no-go. IMO.
>>
>> AFAIK, regular OPERABLE kitchen window. I asked the guy '
>> what if your Mom opens the window to let some fresh air in, what do
>> you figure happnes ?', and he didn't say anything about 'the window
>> doesn't open'.
>>
>> Tks. His Dad is getting the inspector to check it out - also
>> to make sure permits were pulled by the contractor, etc.
>
> Cool. You never know when you've saved someone from an awful
> tragedy. Hopefully, in success of that, we will never find out.
>
> -zero

In reading the installation guide for a Trane, it clearly shows instances
where
the vent may be mounted within a few feet of an operable window. I personally
wouldn't design anything near an open window. Some of the jurisdictions I am
familiar
with treat all windows and doors as air intakes and then apply a 10 feet
clearance
rule (iirc). Also noted that local codes may very greatly.

Here is a Trane install guide I reviewed for comment on your question (see
pages
13-20)...

http://tinyurl.com/226jbd


Joseph

>
>


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