lennox g43uf drain & failure issue

Posted by geothermaljones on February 6, 2009, 9:48 am

Your post is lacking lots of info.
Lacking info, I'll ask this:
Is this a condensing furnace, perchance installed in an uninsulated attic?
If yes, call a decent tech, a carpenter, an electrician & a hit man.
Have the Tech revise as required,
Have the Carpenter build an insulated room around the furnace (please
coordinate with HVAC)
Have the electrician wire in a small electric heater to keep the room 35dF
or warmer (coordinate with the previously mentioned trades)
Have the Hit man stalk & kill the original HVAC installer & the horse he
rode in on...
If No, disregard & wait.

geothermaljones

>I have a 2 year old Lennox in a new house. This is our second winter.
> When the temp outside stays in the 20's, the heat fails. It also cause a
> spillage issue into the sheetrock. When I called the installer he said
> that the "90 percent units will fail when it gets too cold". What is the
> condensation issue? It doesn't seem logical to me that a heat unit fails
> because it is too cold outside. Can someone give me some technical
> direction.
> R.W.
> -------------------------------------
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Posted by Zyp on February 6, 2009, 4:48 pm

geothermaljones wrote:

> Your post is lacking lots of info.
> Lacking info, I'll ask this:
> Is this a condensing furnace, perchance installed in an uninsulated
> attic? If yes, call a decent tech, a carpenter, an electrician & a
> hit man. Have the Tech revise as required,
> Have the Carpenter build an insulated room around the furnace (please
> coordinate with HVAC)
> Have the electrician wire in a small electric heater to keep the room
> 35dF or warmer (coordinate with the previously mentioned trades)
> Have the Hit man stalk & kill the original HVAC installer & the horse
> he rode in on...
> If No, disregard & wait.
> geothermaljones

>> I have a 2 year old Lennox in a new house. This is our second winter.
>> When the temp outside stays in the 20's, the heat fails. It also
>> cause a spillage issue into the sheetrock. When I called the
>> installer he said that the "90 percent units will fail when it gets
>> too cold". What is the condensation issue? It doesn't seem logical
>> to me that a heat unit fails because it is too cold outside. Can
>> someone give me some technical direction.
>> R.W.
>> -------------------------------------
>> ##-----------------------------------------------##
>> Delivered via http://www.thestuccocompany.com/
>> Building Construction and Maintenance Forum
>> Web and RSS access to your favorite newsgroup -
>> alt.hvac - 28093 messages and counting!
>> ##-----------------------------------------------##

LOL

Insure that the condensate trap and drain are leak free. Wrap the trap [as
recommended by the Mfg.] with a electric heater cord [purchased at most
refrigeration / HVAC supply houses]. See the installation instructions for
the unit installed.

--
Zyp

Posted by borealbushman on February 7, 2009, 1:47 pm

We had a 96%-ultra-efficient unit (natural gas) installed in our house
in northern Alberta, where six continuous weeks of -40C (same as -40F)
was not uncommon. In the nine years we lived in that house it ran
efficiently and flawlessly. In that community your installer's "90
percent units will fail when it gets too cold" would have gotten him
dragged out of town behind a team of Huskies (no sleigh). You need to
find a competent installer to fix the first guy's screw-up.

In our house two plastic pipes were routed out through the basement
wall (one for incoming combustion air; one for outgoing exhaust). The
majority of the condensate simply went down the floor drain---only a
tiny bit of moisture went out with the exhaust. The only oddity we
experienced was the development of gorgeous ice-stalagmites beneath
the end of the exhaust pipe ... nothing a well-directed kick couldn't
cure every few weeks. Possibly your out-going exhaust pipe might be
incorrectly slanted (upward) and the moisture is condensing and
collecting inside the pipe rather than dripping off the end?

On Feb 5, 8:49 pm, pastorwarren_at_bellsouth_dot_...@foo.com
(pastorray) wrote:

> condensation issue? =A0It doesn't seem logical to me that a heat unit fai=

> because it is too cold outside. =A0Can someone give me some technical
> direction.

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