Home » Public Forums » GMCnet » I hate my furnace II, the sequel
| I hate my furnace II, the sequel [message #223342] |
Sat, 21 September 2013 23:08  |
lance
Messages: 190
Registered: December 2004
Location: Vancouver, WA
Karma: 0
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Senior Member |
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Some of you may remember my earlier furnace fiasco that turned out to be a corroded plug that connected my brand new furnace to the main wire loom.
With summer, I haven't needed the furnace for the past few weeks but now the night has a chill so I set the thermostat and the furnace kicks in. It runs and takes the chill off but when the night air draws the temperature down again the furnace does not seem to take notice. I have to move te thermostat down below the ambient temperature and back up and the dang furnace comes to life. It runs, I get warm and then it seems to forget again and goes into hibernation or something. I'm considering putting in a fireplace but space is at a premium, as you all know.
Does anyone know how I can get my brand new furnace to cooperate with the brand new thermostat? Thank goodness my a/c units both have the heat option but they will just take the chill off. Next month will be a different story.
I want to thank all you guys once again that help us all keep our coaches alive and well.
1974 Palm Beach
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| Re: [GMCnet] I hate my furnace II, the sequel [message #223348 is a reply to message #223342] |
Sat, 21 September 2013 23:50  |
mickeysss
Messages: 1476
Registered: January 2012
Karma: 0
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Senior Member |
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If you want a very small and very good design, the best possible wood stove for the gmc.
Mark Blankely makes the best in the world, he also has water heaters attached to the flu and possible radiator
type heating attached to the stove. They are very thin and can be put in a very small place he sells a lot for boats.
here is how to get to them and his email ask him to send pictures of all his inventions. Mickey 77 palm beach anaheim ca.
you could put one that slides into the rear trailer hitch for out doors? They also call them charlie chaplin stoves.
If you type in stovemark on google search follow that link or type on gypsy stove on eBay
mark blankley <blancouk@hotmail.com>
On Sep 21, 2013, at 9:08 PM, Lance wrote:
>
>
> Some of you may remember my earlier furnace fiasco that turned out to be a corroded plug that connected my brand new furnace to the main wire loom.
>
> With summer, I haven't needed the furnace for the past few weeks but now the night has a chill so I set the thermostat and the furnace kicks in. It runs and takes the chill off but when the night air draws the temperature down again the furnace does not seem to take notice. I have to move te thermostat down below the ambient temperature and back up and the dang furnace comes to life. It runs, I get warm and then it seems to forget again and goes into hibernation or something. I'm considering putting in a fireplace but space is at a premium, as you all know.
>
> Does anyone know how I can get my brand new furnace to cooperate with the brand new thermostat? Thank goodness my a/c units both have the heat option but they will just take the chill off. Next month will be a different story.
>
> I want to thank all you guys once again that help us all keep our coaches alive and well.
> --
> 1976 Palm Beach
> _______________________________________________
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| Re: I hate my furnace II, the sequel [message #223356 is a reply to message #223342] |
Sun, 22 September 2013 07:27 |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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Senior Member |
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Thermostat only shorts the 2 wires together. Sounds like furnace ignition has timed out and cycling the stat restarts the furnace cycle. Then it shuts down due safety issue related to draft detection, flame detection or overtemp shutdown from restricted air flow.
John Lebetski
Woodstock, IL
77 Eleganza II
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| Re: I hate my furnace II, the sequel [message #223363 is a reply to message #223342] |
Sun, 22 September 2013 09:50 |
Carl S.
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma: 13
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Senior Member |
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| lance wrote on Sat, 21 September 2013 21:08 |
Some of you may remember my earlier furnace fiasco that turned out to be a corroded plug that connected my brand new furnace to the main wire loom.
With summer, I haven't needed the furnace for the past few weeks but now the night has a chill so I set the thermostat and the furnace kicks in. It runs and takes the chill off but when the night air draws the temperature down again the furnace does not seem to take notice. I have to move te thermostat down below the ambient temperature and back up and the dang furnace comes to life. It runs, I get warm and then it seems to forget again and goes into hibernation or something. I'm considering putting in a fireplace but space is at a premium, as you all know.
Does anyone know how I can get my brand new furnace to cooperate with the brand new thermostat? Thank goodness my a/c units both have the heat option but they will just take the chill off. Next month will be a different story.
I want to thank all you guys once again that help us all keep our coaches alive and well.
|
I don't really know enough about furnaces to make an intelligent suggestion on this, but I did replace my thermostat a few years ago after breaking the old one while removing the mattress. As I recall, it was cheap and easy, but there was an internal (to the t-stat) setting that had to be adjusted in order for it to work right. It was a few years ago, and I don't remember the details, but it was covered in the installation instructions. I'm not trying to suggest that the t-stat is definitely the problem, but it might be worth a try.
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
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| Re: [GMCnet] I hate my furnace II, the sequel [message #223366 is a reply to message #223363] |
Sun, 22 September 2013 10:10 |
emerystora
Messages: 4442
Registered: January 2004
Karma: 13
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Senior Member |
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That internal adjustment is not critical. It is just to set the amount of time that the blower continues to blow after the thermostat reaches the set position. You can get quite a bit of heat after the flame shuts off due to the hot metal inside the heater.
Emery Stora
On Sep 22, 2013, at 9:50 AM, Carl Stouffer wrote:
>
>
> lance wrote on Sat, 21 September 2013 21:08
>> Some of you may remember my earlier furnace fiasco that turned out to be a corroded plug that connected my brand new furnace to the main wire loom.
>>
>> With summer, I haven't needed the furnace for the past few weeks but now the night has a chill so I set the thermostat and the furnace kicks in. It runs and takes the chill off but when the night air draws the temperature down again the furnace does not seem to take notice. I have to move te thermostat down below the ambient temperature and back up and the dang furnace comes to life. It runs, I get warm and then it seems to forget again and goes into hibernation or something. I'm considering putting in a fireplace but space is at a premium, as you all know.
>>
>> Does anyone know how I can get my brand new furnace to cooperate with the brand new thermostat? Thank goodness my a/c units both have the heat option but they will just take the chill off. Next month will be a different story.
>>
>> I want to thank all you guys once again that help us all keep our coaches alive and well.
>
>
>
> I don't really know enough about furnaces to make an intelligent suggestion on this, but I did replace my thermostat a few years ago after breaking the old one while removing the mattress. As I recall, it was cheap and easy, but there was an internal (to the t-stat) setting that had to be adjusted in order for it to work right. It was a few years ago, and I don't remember the details, but it was covered in the installation instructions. I'm not trying to suggest that the t-stat is definitely the problem, but it might be worth a try.
> --
> Carl S.
> '75 ex Palm Beach
> Tucson, AZ.
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] I hate my furnace II, the sequel [message #223368 is a reply to message #223348] |
Sun, 22 September 2013 00:08 |
k2gkk
Messages: 4452
Registered: November 2009
Karma: -8
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Senior Member |
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I think you may be talking about Charlie Noble stoves, Mickey.
Mac (at Branson)
Sent from my iPhone
On Sep 21, 2013, at 23:49, "Mickey Space Ship Shuttle" <mickeysss@me.com> wrote:
If you want a very small and very good design, the best possible wood stove for the gmc.
Mark Blankely makes the best in the world, he also has water heaters attached to the flu and possible radiator
type heating attached to the stove. They are very thin and can be put in a very small place he sells a lot for boats.
here is how to get to them and his email ask him to send pictures of all his inventions. Mickey 77 palm beach anaheim ca.
you could put one that slides into the rear trailer hitch for out doors? They also call them charlie chaplin stoves.
If you type in stovemark on google search follow that link or type on gypsy stove on eBay
mark blankley <blancouk@hotmail.com>
> On Sep 21, 2013, at 9:08 PM, Lance wrote:
>
>
>
> Some of you may remember my earlier furnace fiasco that turned out to be a corroded plug that connected my brand new furnace to the main wire loom.
>
> With summer, I haven't needed the furnace for the past few weeks but now the night has a chill so I set the thermostat and the furnace kicks in. It runs and takes the chill off but when the night air draws the temperature down again the furnace does not seem to take notice. I have to move te thermostat down below the ambient temperature and back up and the dang furnace comes to life. It runs, I get warm and then it seems to forget again and goes into hibernation or something. I'm considering putting in a fireplace but space is at a premium, as you all know.
>
> Does anyone know how I can get my brand new furnace to cooperate with the brand new thermostat? Thank goodness my a/c units both have the heat option but they will just take the chill off. Next month will be a different story.
>
> I want to thank all you guys once again that help us all keep our coaches alive and well.
> --
> 1976 Palm Beach
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
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| Re: [GMCnet] I hate my furnace II, the sequel [message #223369 is a reply to message #223366] |
Sun, 22 September 2013 10:50 |
Carl S.
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma: 13
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Senior Member |
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| emerystora wrote on Sun, 22 September 2013 08:10 |
That internal adjustment is not critical. It is just to set the amount of time that the blower continues to blow after the thermostat reaches the set position. You can get quite a bit of heat after the flame shuts off due to the hot metal inside the heater.
Emery Stora
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Thanks for clearing that up, Emery. Now that you mention it, that kind of joged my memory. I didn't know how critical that adjustment was, but it didn't seem all that important at the time.
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
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| Re: I hate my furnace II, the sequel [message #223372 is a reply to message #223342] |
Sun, 22 September 2013 12:34 |
lance
Messages: 190
Registered: December 2004
Location: Vancouver, WA
Karma: 0
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Senior Member |
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A little update on my situation. I've noticed that if I lower the thermostat then raise it again to get the furnace to run, it may run two or three times before it quits and will not run again until I lower and raise the thermostat again. I'll try cleaning the pints on the thermostat to see if that helps.
1974 Palm Beach
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| Re: [GMCnet] I hate my furnace II, the sequel [message #223373 is a reply to message #223342] |
Sun, 22 September 2013 12:39 |
Jim Miller
Messages: 501
Registered: March 2008
Karma: 10
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Senior Member |
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On Sep 22, 2013, at 12:08 AM, Lance wrote:
> It runs and takes the chill off but when the night air draws the temperature down again the furnace does not seem to take notice. I have to move te thermostat down below the ambient temperature and back up and the dang furnace comes to life. It runs, I get warm and then it seems to forget again and goes into hibernation or something.
It is possible that your thermostat's differential setting is set far too wide. On the old mechanical ones there is an adjustment inside the stat that sets the temperature span between cut-in and cut-out. There's an analogous setting in the electronic ones. Try decreasing the setting and see if it behaves any better.
As others have mentioned you may have an overtemp condition inside the furnace's heat exchanger and the safety circuit is cutting it off early. If the latter you may have obstructed ducts or an obstructed return air path.
--Jim Miller
1977 Eleganza II
1977 Royale
Hamilton, OH
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Jim Miller
1977 Eleganza II
1977 Royale
Hamilton, OH
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| Re: [GMCnet] I hate my furnace II, the sequel [message #223386 is a reply to message #223378] |
Sun, 22 September 2013 19:53 |
captjack
Messages: 271
Registered: February 2010
Location: Sebastopol, California
Karma: 1
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Senior Member |
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The adjustment inside the thermostat is sometimes called a heat anticipator. It's basically an adjustable resistor that is heated by the current from the heater when the thermostat turns the heater on. The heat generated by the resistor slightly warms the thermostat to prevent the temperature in the room from overshooting your set temperature. Sometimes heater manufacturers suggest a setting. I'm not sure how that would cause your problem but if set improperly can cause the room temp to vary uncomfortably.
Jack Christensen - K6ROW,
'76 Glenbrook/Clasco - "The Silver Bullet",
Sebastopol, CA
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| Re: I hate my furnace II, the sequel [message #223389 is a reply to message #223342] |
Sun, 22 September 2013 20:33 |
roy1
Messages: 2126
Registered: July 2004
Location: Minden nevada
Karma: 6
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Senior Member |
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The correct way to set the internal heat anticipator in the thermostat is to measure the current being drawn thru the thermostat and adjust the lever to that amount . In home units it is easy you just observe the.current rating stamped on the gas valve and set it to that. In RV's the thermostat very often is powering more then the gas valve. Most mechanical type thermostats have about 3 or 4 degrees differential in them. If that is the type thermostat you have I would suggest you go to Walmart or similar place and get a digital thermostat that is battery powered (doesn't get power from a transformer) it can be a/c and heat you just use the heat side. They are generally about only 1 degree differential and they have a digital temperature thermometer on them and they light up when you touch them. I haven 't had to change my AA batteries in 3 years.
Roy Keen
Minden,NV
76 X Glenbrook
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| Re: I hate my furnace II, the sequel [message #223488 is a reply to message #223342] |
Mon, 23 September 2013 22:05 |
RadioActiveGMC
Messages: 1020
Registered: November 2010
Location: Hot AZ desert
Karma: 0
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Senior Member |
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I rebuilt my furnace then tossed it in the trash. Mr. Heater Big Buddy solved all my heating needs! No noise. no power consumption, and with all my crazy insulation I can leave a chicken on the counter and have it cooked by morning!
***"Gettin There"-1973 23' Sequoia-
Michael, Onans smell, "Go solar/wind power!"
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