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Old 02-13-2010, 11:07 AM   #31
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Heil GNE075B12 Water in teh tube between combustion blower and pressure switch


id pull the inducer motor housing off also to make sure it hasnt become a water wheel in side there

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Old 02-13-2010, 03:59 PM   #32
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Heil GNE075B12 Water in teh tube between combustion blower and pressure switch


The material is Watts: 3/8" x 1/4" x 10' Clear Vinyl Tubing
Tubing is manufactured from non-toxic FDA listed material.
Tensile Strength 2,550 PSI and can handle a pressure range of 85 to 165 PSI.
Brittle Point neg 42 degrees F
Maximum operating temperature 125 degrees F

I have shut down the furnace earlier on, and inserted a soft wire from inducer to inside, the wire is dry.
Thanks for all comments!
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Old 02-13-2010, 04:02 PM   #33
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Heil GNE075B12 Water in teh tube between combustion blower and pressure switch


You can use automotive vacuum hose.
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Old 02-14-2010, 10:19 PM   #34
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Heil GNE075B12 Water in teh tube between combustion blower and pressure switch


Thanks, will try.
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Old 02-16-2010, 12:07 AM   #35
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Heil GNE075B12 Water in teh tube between combustion blower and pressure switch


The temp on the housing of the draft inducer is 100 degree C (212 F) at the end of a run (The house temp setting is 22C / 71.6F). The supply temp should be 20C / 60F.

Is this normal? How much chance can the motor become "a water wheel" inside ? (Thanks Plummen's comment) Although right now it seems ok, I'm not sure if it will last for a whole winter or several winters.

The droplets don't seem accumulated very much at the static tap after three days. This is really good, and I no longer need to release the droplets every 4/5 days.


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Originally Posted by beenthere View Post
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 02-16-2010, 12:12 AM   #36
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Heil GNE075B12 Water in teh tube between combustion blower and pressure switch


I think you mean a 60F temp rise across the heat exchanger.

So at the supply registers, it should be 120 to 130F. is it?
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Old 02-16-2010, 12:18 AM   #37
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Heil GNE075B12 Water in teh tube between combustion blower and pressure switch


"The supply temp should be 20C / 60F." is the basement room temperature, I assume this is the supply temp? not sure. This is the IN-taking, and the temp at housing is the OUT. correct?
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Old 02-16-2010, 01:09 AM   #38
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Heil GNE075B12 Water in teh tube between combustion blower and pressure switch


No.

Supply temp is the temp of the air blowing out of the registers.
The return temp is teh air that is being drawn into the furnace.
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Old 02-16-2010, 08:19 PM   #39
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Heil GNE075B12 Water in teh tube between combustion blower and pressure switch


Ok, the temps are
(1) Supply temp is 100 degree C (212 F) at Max
(2) The return temp is 20C / 60F.

Thanks
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Old 02-16-2010, 08:27 PM   #40
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Heil GNE075B12 Water in teh tube between combustion blower and pressure switch


Quote:
Originally Posted by Quin View Post
Ok, the temps are
(1) Supply temp is 100 degree C (212 F) at Max
(2) The return temp is 20C / 60F.

Thanks
Did you actually measure a 212F temp at a supply register?

If so. Your furnace is operating in an unsafe condition, shut it off.
It would only be moving about 460 CFM. Or the manifold pressure is at 7".
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Old 02-16-2010, 09:49 PM   #41
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Heil GNE075B12 Water in teh tube between combustion blower and pressure switch


Correction, just moniter the moter runs again, I have noticed the temperature on the outside of the moter housing is about 167F max while the motor is still running at the end of a cycle. After the motor is off, then the temp goes up to 212F, then it cools down.

Thanks BeenThere.
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Old 02-16-2010, 10:18 PM   #42
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Heil GNE075B12 Water in teh tube between combustion blower and pressure switch


Measure the supply air temp quin, not the flue gas temp. Poke a hole in the air duct and measure there. DON'T poke a hole in the flue pipe! If you're not positive what that means just ask.

Last edited by Marty S.; 02-16-2010 at 10:28 PM.
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Old 02-16-2010, 11:13 PM   #43
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Heil GNE075B12 Water in teh tube between combustion blower and pressure switch


Its the big ducts that you want to measure.
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Old 02-19-2010, 11:45 PM   #44
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Heil GNE075B12 Water in teh tube between combustion blower and pressure switch


Thanks, will try!
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Old 02-14-2012, 10:38 AM   #45
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Heil GNE075B12 Water in teh tube between combustion blower and pressure switch


I know this is an old thread.. But I have the same EXACT problem after replacing the combustion blower. Old blower needed replacing b/c of bearing noise and did not have any problem with condensate before. New one is producing condensate at the motor side of the tube appearing seconds after the motor starts up. Eventually a drop appears and blocks the vacuum, cycling the pressure switch/burners. If anyone could provide how or if this problem is corrected I'd really appreciate it. All the techs and installation company is clueless after contacting them, and I'm not interested in replacing the furnace as some have suggested. TIA.

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