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Old 12-28-2009, 04:51 AM   #16
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Heil GNE075B12 Water in teh tube between combustion blower and pressure switch


Your metal chimney does not look like B Vent.

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Old 12-28-2009, 08:42 AM   #17
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Heil GNE075B12 Water in teh tube between combustion blower and pressure switch


You may need to increase your night time temp. After the furnace is off for awhile the moisture in that tube condenses. The colder it is the faster and more it condenses. That is a BAD design for the location of that switch. I like units where the switch is above the inducer fan so any water in the tube flows downhill into the fan. Unfortunately you are stuck with that one. Night setback tstats only save 1-2% on your heating bill so don't feel bad if you leave it at 68. Try it there and see if the problem goes away.
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Old 12-28-2009, 09:13 PM   #18
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Heil GNE075B12 Water in teh tube between combustion blower and pressure switch


Thanks havclover.
Thanks Yuri, I have increased the setting to 68, will moniter to see if this solves the problem. I will update the thread in one or two weeks.

Thanks you all!
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Old 01-08-2010, 10:01 PM   #19
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Heil GNE075B12 Water in teh tube between combustion blower and pressure switch


Quin, Did it work? I am having the same issue. Want to find out before calling someone to take a look.

Thanks,
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Old 01-09-2010, 08:57 PM   #20
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Heil GNE075B12 Water in teh tube between combustion blower and pressure switch


I have increased my night time temperature to 68F in floor 1. for now, I still need to release condensation water from the tube every 4 days. It seems one day longer, the amount of the water is just like 10 drops, half of a small spoon, when it blocks the tube, the furnace is down.

I have to continue to monitor, I'm not sure if my basement is still not warm enought.

I'm also wonder if I should add a insulation layer to cover ventaltion pipe inside the basemetn and the part under the roof.

Sjoys, sorry, I don't have an good answer for you yet. If I have any good result, I will post here.

Thanks
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Old 02-11-2010, 05:00 PM   #21
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Heil GNE075B12 Water in teh tube between combustion blower and pressure switch


After increasing night time temperature to 21C, I need to release the water every 5 days. This is certainly better than 3 days, how can we totally fix this problem? Please help.

The pipe is B vent, there is a label on it.

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Old 02-11-2010, 06:02 PM   #22
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Heil GNE075B12 Water in teh tube between combustion blower and pressure switch


Whats the temp rise across the heat exchanger?
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Old 02-11-2010, 06:29 PM   #23
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Heil GNE075B12 Water in teh tube between combustion blower and pressure switch


How about buying a longer hose and routing it over the inducer and then back down to the pressure switch? Any droplets in the tube would have to drain into the inducer when it shut off.
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Old 02-11-2010, 07:37 PM   #24
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Heil GNE075B12 Water in teh tube between combustion blower and pressure switch


To beenthere: where to measure "Whats the temp rise across the heat exchanger"? Thanks

To Marty S, what an idea!!! May I ask where to buy these type of hose? I live in Toronto, is Homedepot a good store?

Will droplets cause any problem in the motor?

Thanks very much!
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Old 02-11-2010, 07:46 PM   #25
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Heil GNE075B12 Water in teh tube between combustion blower and pressure switch


If you don't have a probe that can be inserted into the supply and return duct at teh furnace.
Then taking them at the nearest supply and return register to teh furnace can work.
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Old 02-11-2010, 08:33 PM   #26
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Heil GNE075B12 Water in teh tube between combustion blower and pressure switch


Automotive store would be a better bet for vacuum hose. Moisture is coming from the inducer housing so a drop going back in won't hurt anything.
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Old 02-12-2010, 10:10 PM   #27
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Heil GNE075B12 Water in teh tube between combustion blower and pressure switch


Bought clear vinyle tubing from Plumbing dept, Home Depot. Put it on right away. The clear tube shows that condensation happens when blower is running. When furnace is down, the condensation is actually stopped. So far it looks good, the water only accumulates in the inducer area. See photo attached.

Thanks Marty for the great suggestion.
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Old 02-12-2010, 10:31 PM   #28
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Heil GNE075B12 Water in teh tube between combustion blower and pressure switch


That tubing is going to melt right at the induce housing
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Old 02-12-2010, 11:38 PM   #29
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Heil GNE075B12 Water in teh tube between combustion blower and pressure switch


Ya, that clear vinyl isn't able to take the heat.
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Old 02-13-2010, 10:50 AM   #30
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Heil GNE075B12 Water in teh tube between combustion blower and pressure switch


I will look for Silicone tubing in local stores. The vinyle one seems ok for now after about 24 hours, which is good, but I'm not sure if this indicates another problem: the temp at the inducer is too low? Is it normal to have condensation when the fan is blowing?
On the other hand, there are some wind generated when blower is running and cooled down. I don't have a good way to measure the temp right away.

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