Lennox Furnace drain issue

Any factory photo that shows it *inside* the cabinet will do....

Reply to
KJPRO
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Alright, since this is a Usenet group, I can't email or load photos (thanks google). King, can I just emial you a picture of the front of the furance so you can see if anything look incorrect? Also can you explain your comment above further (I am rookie on this stuff right now). I have an upflow furnace, the exhaust pipe is above the blower. So I agree with you, why do I even need a trap, I don't see how any fumes would go anywhere but up. thx.

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You have to have a trap or the suction from the blower will not allow for proper drainage.

Reply to
KJPRO

Its not inside the furnace, its a factory supplied trap that is mounted on the outside of the furnace on the cabinet. Its not a field fabricated trap like noonie was eluding to.

Reply to
The King

Exactly, now are we sure the installers installed this part? Nope!

Reply to
KJPRO

Yes.

Reply to
The King

oups.com...

for it...

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I just send you the pictures. Also wanted to mention the error code that occurs is 2 + 5 "High Pressure Switch Failed open. Check blocked inlet/exhaust or condensate line (condensing furnaces only)"

Reply to
jkennedy1

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Ill bet money there is a problem with the trap. have the tech bring out a new one and see what happens.

Reply to
The King

for it...

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Scratch that since its been replaced twice. Have Lennox replace the furnace. :)

Reply to
The King

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

Reply to
jkennedy1

On Tue, 30 Dec 2008 16:21:38 -0800 (PST), snipped-for-privacy@gmail.com wrote: snip

Yes

That's what the trap is for.

Reply to
The King

Yes

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.

Reply to
jkennedy1

Yes

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.

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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.

Reply to
Steve

I did switch the hoses around on the trap a couple days back and it made no difference.

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I didn't figure it would

Reply to
Steve

What's your idea of what may be wrong.

Reply to
The King

With a level furnace, proper "clean" trap, no other secondary line trap... I would look towards a venting hose issue.

Reply to
KJPRO

Like you say it drains when it shuts off so nothing is blocked. Whatever the problem is I hope the OP lets us know what the outcome is.

Maybe there is something internal in the furnace that's wacked.

Reply to
The King

Replace a furnace since the tech can't locate the real issue??? Why not locate a better tech???

Reply to
KJPRO

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It will drain while running... that's why the trap is installed. There is no suction though it since it can't suck air.

Reply to
KJPRO

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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.

Reply to
KJPRO

How much air could an air sucker suck if an air sucker could suck air?

Reply to
Jim Dandy

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