Forums | Home Repair | Home Improvement | Painting | Interior Decorating | Remodeling | Landscaping


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > HVAC

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 02-19-2009, 06:24 PM   #1
Mechanically Inclined
 
Join Date: Feb 2009
Location: Southern Wisconsin
Posts: 39
Share |
Default

Heil furnace inducer vibrating, capcitor handling question


We have a Heil natural gas furnace about 18 years old (Model #NUGK075DG07 - 867.769426). The exhauset inducer was replaced about 10 years ago. I had the natural gas shut off to the whole house Saturday while I replaced my water heater, re-routed it's gas line and added a gas shut-off valve. The furnace ran fine when I turned the gas back on. But Sunday morning I noticed the inducer was vibrating and rumbling through the duct work.

I checked the exhaust vent line - no clogs, but I did wipe up some moisture/water build up at the inducer body exhaust port. It seems a little bit quieter today. I'm beginning to think a lot of condensation built up in the inducer while the furnace was shut down (I'm in Wisconsin). I'll open it up and clean it out to see if that helps. There are two brown wires leading from the inducer motor to an oval capacitor (picture).... I would think I need to discharge the capacitor before I handle it or open the inducer to clean it out?
Will disconnecting power at the breaker box discharge the capacitor and how long does it take?
Attached Thumbnails
Heil furnace inducer vibrating, capcitor handling question-img_0422.jpg  
diggerdave is offline   Reply With Quote
Old 02-19-2009, 08:07 PM   #2
Hvac Pro
 
Join Date: Nov 2008
Location: Winnipeg, Canada
Posts: 8,333
Default

Heil furnace inducer vibrating, capcitor handling question


Put on some leather work gloves, loosen the screw on the capacitor clamp and slide it out and then put it in a thick ziploc bag with the wires attached temporary and you are safe. I would first run it for a few more days. Those ventors can safely sling some water out and it may clear up on its own. When you disturb/break the mounting gaskets/coupling you may end up with an even bigger problem and that unit is EXPENSIVE.
yuri is offline   Reply With Quote
Old 02-20-2009, 10:15 AM   #3
Member
 
Join Date: Jul 2008
Location: NW of D.C.
Posts: 5,990
Default

Heil furnace inducer vibrating, capcitor handling question


Quote:
Originally Posted by diggerdave View Post
the inducer was vibrating and rumbling through the duct work.
One of the impeller blade balancing clips has fallen off?

Grainger's capacitor discharge resistor is 15k, 2W. With a 100uF capacitor it would take ~2 seconds to lose 99% of its original voltage (it never goes totally to zero).

Last edited by Yoyizit; 02-20-2009 at 10:50 AM.
Yoyizit is offline   Reply With Quote
Old 02-20-2009, 01:06 PM   #4
Member
 
hvaclover's Avatar
 
Join Date: Oct 2008
Location: Suburbs of Detroit Mi
Posts: 3,704
Default

Heil furnace inducer vibrating, capcitor handling question


Quote:
Originally Posted by Yoyizit View Post
One of the impeller blade balancing clips has fallen off?

Grainger's capacitor discharge resistor is 15k, 2W. With a 100uF capacitor it would take ~2 seconds to lose 99% of its original voltage (it never goes totally to zero).
Nailed that one Yowzit. Probably gonna need a new one.

But I discharge caps on my tongue, no kidding, but that is just me and i don't recommend it to any one else.

Guess that accounts for my electrifying personality
__________________
Just slow, not stupid.

Last edited by hvaclover; 02-20-2009 at 04:20 PM.
hvaclover is offline   Reply With Quote
Old 02-20-2009, 04:19 PM   #5
Member
 
Join Date: Jul 2008
Location: NW of D.C.
Posts: 5,990
Default

Heil furnace inducer vibrating, capcitor handling question


Quote:
Originally Posted by hvaclover View Post
.

Guess that accounts for my electrifying personality
Yowsa, yowsa. . .
Yoyizit is offline   Reply With Quote
Old 02-25-2009, 01:04 AM   #6
Mechanically Inclined
 
Join Date: Feb 2009
Location: Southern Wisconsin
Posts: 39
Default

Heil furnace inducer vibrating, capcitor handling question


The inducer didn't get much better over the week, so I'd like to open it up and take a look at the impeller balancing clips. If I remove the housing body clips on the outside, will I be able to split this in half without cutting along the seam or doing a lot of prying, and possibly break the housing?
diggerdave is offline   Reply With Quote
Old 02-25-2009, 09:34 AM   #7
Member
 
hvaclover's Avatar
 
Join Date: Oct 2008
Location: Suburbs of Detroit Mi
Posts: 3,704
Default

Heil furnace inducer vibrating, capcitor handling question


nope.
__________________
Just slow, not stupid.
hvaclover is offline   Reply With Quote
Old 02-25-2009, 12:26 PM   #8
Hvac Pro
 
Join Date: Nov 2008
Location: Winnipeg, Canada
Posts: 8,333
Default

Heil furnace inducer vibrating, capcitor handling question


Even if you could look at the impeller you cannot put those clips on, so you need a new unit anyway. I have had to replace a few of those furnaces as some of them the burners are rotting away/flames coming out the sides and the burners are obsolete. May be a $$ pit in the future.
yuri is offline   Reply With Quote
Old 02-25-2009, 12:59 PM   #9
Member
 
Join Date: Jul 2008
Location: NW of D.C.
Posts: 5,990
Default

Heil furnace inducer vibrating, capcitor handling question


Quote:
Originally Posted by yuri View Post
Even if you could look at the impeller you cannot put those clips on, so you need a new unit anyway. I have had to replace a few of those furnaces as some of them the burners are rotting away/flames coming out the sides and the burners are obsolete. May be a $$ pit in the future.
Speakina' "money pits", you might want to Google your furnace along with
"class action" or
"recall" or
"technical service bulletin" along with your part name.

Probably the price of a new balanced impeller is half the cost of a whole new unit. This pricing strategy may annoy you but it is designed to put you on the Repair/Replace Fence, and it usually works.

And,
all I needed was a starter solenoid and I knew this to a high level of certainty.
A solenoid with starter motor was $70.
I think they wanted $50 for just the solenoid.
I guess I wasn't so certain after all, so I paid the $70.
http://www.made-in-china.com/image/2...otor-Ford-.jpg
The solenoid is the little guy on top.

I'm sure MBAs have a name for this-it's not Slippery Slope. It doesn't seem to be supply and demand either. It might be the cost of inventorying smaller assemblies vs. larger assemblies that forces them to do this.

BTW, you might be able to repair the blower housing with fiberglass mesh and that gooey stuff that goes with it.

Last edited by Yoyizit; 02-25-2009 at 01:06 PM.
Yoyizit is offline   Reply With Quote
Old 02-25-2009, 04:43 PM   #10
Hvac Pro
 
Join Date: Nov 2008
Location: Winnipeg, Canada
Posts: 8,333
Default

Heil furnace inducer vibrating, capcitor handling question


The impeller is heat expanded/pressed formed device onto the motor shaft as a normal set screw would corrode/fall off. If you break the housing, moisture and fumes will leak out. It is glued together with high grade silicone plus those clips.
yuri is offline   Reply With Quote
Old 02-25-2009, 05:03 PM   #11
Member
 
Join Date: Jul 2008
Location: NW of D.C.
Posts: 5,990
Default

Heil furnace inducer vibrating, capcitor handling question


Quote:
Originally Posted by yuri View Post
The impeller is heat expanded/pressed formed device onto the motor shaft as a normal set screw would corrode/fall off. If you break the housing, moisture and fumes will leak out. It is glued together with high grade silicone plus those clips.
I'm losing hope, here. . .

OK, I'm forced to use my secret weapon.

If the blower costs 100 pieces of silver (or pesos, or yen, or Euros), and a service call costs 200 pieces of silver and the tech decides that a new blower (110 pieces of silver is your price, he had to fetch the part) will fix the problem, then you should do the DIY if the likelihood that it is only the blower is at least
100/(110+200) = ~32%.
From what I'm hearing, the likelihood is almost 100% and there is no root cause outside of the blower that caused the blower to fail.

Looks like a DIY replacement is the rational decision of an informed HO.

Last edited by Yoyizit; 02-25-2009 at 07:05 PM.
Yoyizit is offline   Reply With Quote
Old 02-25-2009, 06:11 PM   #12
Hvac Pro
 
Join Date: Nov 2008
Location: Winnipeg, Canada
Posts: 8,333
Default

Heil furnace inducer vibrating, capcitor handling question


Disco was popular when I graduated high school and I had a shaggin wagon so don't ask me to resurrect my Maths courses. I haven't a clue what silver is worth. LOL
yuri is offline   Reply With Quote
Old 02-25-2009, 06:16 PM   #13
Member
 
hvaclover's Avatar
 
Join Date: Oct 2008
Location: Suburbs of Detroit Mi
Posts: 3,704
Default

Heil furnace inducer vibrating, capcitor handling question


Quote:
Originally Posted by yuri View Post
Disco was popular when I graduated high school and I had a shaggin wagon so don't ask me to resurrect my Maths courses. I haven't a clue what silver is worth. LOL
I bet my 1960s VW "Lonely Love Wagon " bus beat your shaggin wagon all to heck
__________________
Just slow, not stupid.
hvaclover is offline   Reply With Quote
Old 02-25-2009, 06:54 PM   #14
Hvac Pro
 
Join Date: Nov 2008
Location: Winnipeg, Canada
Posts: 8,333
Default

Heil furnace inducer vibrating, capcitor handling question


I wasn't "lonely" in my Chevy Van.
yuri is offline   Reply With Quote
Old 02-25-2009, 07:10 PM   #15
Member
 
hvaclover's Avatar
 
Join Date: Oct 2008
Location: Suburbs of Detroit Mi
Posts: 3,704
Default

Heil furnace inducer vibrating, capcitor handling question


Neither was I. i was in the army in Germany and had that name scrawled on each side of the van.

Guys laughed at it. Chicks wanted to find out why this poor American soldier

was all alone.



GERMAN CHICKS ROCK!!
__________________
Just slow, not stupid.
hvaclover is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Heil Furnace Burner Problem timothyr HVAC 79 02-12-2014 07:01 PM
Replacement impeller and clip for Heil exhaust inducer blower iixeb HVAC 2 01-09-2009 08:36 PM
Problems with new furnace..Overheating, having to reset. Furnace too big? Tommy2 HVAC 41 12-01-2008 01:55 PM
New Cased Coil - Install to Furnace - PICTURES!! hartkem HVAC 39 11-18-2008 01:45 AM
One furnace question and one thermostat question lh0628 HVAC 4 10-11-2007 10:17 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.