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Lennox Furnace drain issue jkennedy1 12-27-2008
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Posted by The King on December 30, 2008, 7:38 pm
On Tue, 30 Dec 2008 16:21:38 -0800 (PST), jkennedy1@gmail.com wrote:
snip
>Yep, going back to my installer is all I can do at this point, fun
>times. Get to confirm something, is water from that cold header box
>supposed to drain out while the furnace is running?

Yes

>With that inducer
>fan going, wouldn't I expect the fan suction to hold that water in the
>box while it's spinning?


That's what the trap is for.

Posted by on December 31, 2008, 9:21 am
> On Tue, 30 Dec 2008 16:21:38 -0800 (PST), jkenne...@gmail.com wrote:
> snip
> >Yep, going back to my installer is all I can do at this point, fun
> >times. =A0Get to confirm something, is water from that cold header box
> >supposed to drain out while the furnace is running?
> Yes
> >With that inducer
> >fan going, wouldn't I expect the fan suction to hold that water in the
> >box while it's spinning?
> That's what the trap is for.

Yes
>With that inducer
>fan going, wouldn't I expect the fan suction to hold that water in the
>box while it's spinning?

>That's what the trap is for.

So, your point here is the trap will stop that suction even though the
water in the cold head box is slightly above the water in the
condensate trap? I'm not sure if a good seal can be made with that
set up. I thought these traps were to stop any residual exhaust gas
from traveling into the house.

Posted by Steve on December 31, 2008, 4:06 pm

> On Tue, 30 Dec 2008 16:21:38 -0800 (PST), jkenne...@gmail.com wrote:
> snip
> >Yep, going back to my installer is all I can do at this point, fun
> >times. Get to confirm something, is water from that cold header box
> >supposed to drain out while the furnace is running?
> Yes
> >With that inducer
> >fan going, wouldn't I expect the fan suction to hold that water in the
> >box while it's spinning?
> That's what the trap is for.

Yes
>With that inducer
>fan going, wouldn't I expect the fan suction to hold that water in the
>box while it's spinning?

>That's what the trap is for.

So, your point here is the trap will stop that suction even though the
water in the cold head box is slightly above the water in the
condensate trap? I'm not sure if a good seal can be made with that
set up. I thought these traps were to stop any residual exhaust gas
from traveling into the house.

------------------------------------------

Thats what you get for thinking.
The trap has to be *BELOW* where the water is coming from, and its to allow
the water to drain even though there is a pressure difference between where
its coming from and where its going to.




Posted by KJPRO on January 1, 2009, 11:35 pm

So, your point here is the trap will stop that suction even though the
water in the cold head box is slightly above the water in the
condensate trap? I'm not sure if a good seal can be made with that
set up. I thought these traps were to stop any residual exhaust gas
from traveling into the house.


==============

The trap stops air from traveling from one area to the other.

The traps are dual purpose, lets the unit drain and stops CO from entering
your home.



Posted by on January 7, 2009, 10:42 am

> The trap stops air from traveling from one area to the other.
> The traps are dual purpose, lets the unit drain and stops CO from enterin=
g
> your home.

Is there any trick to replacing the trap? Does it need to be done by
a pro or can I do it myself?

My trap is cracked and leaking, see pics: http://farrelltcs.com/furnace

Thanks!

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