Home » Public Forums » GMCnet » [GMCnet] Furnace Access
| [GMCnet] Furnace Access [message #220817] |
Sun, 01 September 2013 22:24  |
Jeff Marten
Messages: 199
Registered: August 2013
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Well, I checked the furnace operation tonight since we may be using the coach next weekend. Nada. No activity or noises when the thermostat is turned up. There is a Suburban furnace installed, couldn't see a model number. Gas inlet valve is open.
What is the best way to test/troubleshoot?
Jeff Marten
Colorado Springs, Co
1978 Royale
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1985 Gulf Stream 34' Sun Stream
1964 Falcon 'Vert
1980 Bradley GTE
1999 Chevy Tahoe
2005 Saab 93 Aero
1987 Suzuki Intruder 1400
1978 Glastron/Carlson CV23
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| Re: [GMCnet] Furnace Access [message #220884 is a reply to message #220865] |
Mon, 02 September 2013 13:31  |
Jeff Marten
Messages: 199
Registered: August 2013
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It's good to have uber-anal POs; found the furnace model and serial numbers on a page in the log book I received with the coach (along with model and serial numbers for just about everything else). It's a Suburban NT-30M. The manual I located online says it has to be removed in order to be serviced. I need to verify it is getting power. Manual says the blower should come on, then assuming the sail switch closes, the burner should ignite; says it is electronic ignition, pilot-less.
>
> Did you ignite the pilot light?
> --
> '73 23' Sequoia For Camping
> '73 23' CanyonLands For Sale
> UA (Upper Alabama)
> "Time is money. If you use YOUR time, you get to keep YOUR money."
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1985 Gulf Stream 34' Sun Stream
1964 Falcon 'Vert
1980 Bradley GTE
1999 Chevy Tahoe
2005 Saab 93 Aero
1987 Suzuki Intruder 1400
1978 Glastron/Carlson CV23
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| Re: [GMCnet] Furnace Access [message #220926 is a reply to message #220884] |
Mon, 02 September 2013 19:14 |
A Hamilto
Messages: 4508
Registered: April 2011
Karma: 39
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| Jeff Marten wrote on Mon, 02 September 2013 13:31 |
It's good to have uber-anal POs; found the furnace model and serial numbers on a page in the log book I received with the coach (along with model and serial numbers for just about everything else). It's a Suburban NT-30M. The manual I located online says it has to be removed in order to be serviced. I need to verify it is getting power. Manual says the blower should come on, then assuming the sail switch closes, the burner should ignite; says it is electronic ignition, pilot-less.
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Another thing that changed during production I guess. My Operating Manual says you have to light it manually.
LIGHTING FURNACE
NOTE: Be sure manual control valve at LP gas tank is fully open.
1 . Set thermostat, located in rear of Motor Home living area to "OFF" position.
2 . Open furnace manual valve fully, located under sink near the sink trap. Do not attempt to operate furnace with valve partly opened as proper operation depends on valve being fully open.
NOTE: If relighting furnace, close furnace manual valve for 5 minutes, then open manual valve and proceed to next step.
3. Remove lighter cap. Depress reset button and hold in. Pump igniter until pilot lights .
4. Continue to hold in reset button for 30 seconds after pilot is lighted.
5. Install lighter cap.
6. Set thermostat to desired temperature.
NOTE: Furnace pilot may be lit by match if desired, through lighter cap opening.
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| Re: [GMCnet] Furnace Access [message #220928 is a reply to message #220926] |
Mon, 02 September 2013 19:26 |
tphipps
Messages: 3005
Registered: August 2004
Location: Spanish Fort, AL
Karma: 9
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Turn on the stove top and verify gas flow. Sometimes gas lines are full of air because you turned the feed into the lie of at he tank. May take a bit before gas actually gets to burner. Mine initially took about 30 seconds, as I recall. Is there a reset button? Mine needed to be reset before it would fire up.
Tom, MS II
2012 Phoenix Cruiser model 2552
KA4CSG
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| Re: [GMCnet] Furnace Access [message #220941 is a reply to message #220926] |
Mon, 02 September 2013 20:26 |
Jeff Marten
Messages: 199
Registered: August 2013
Karma: 1
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Senior Member |
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Where would it be lit? There is no exterior access door. The unit is under the sink and has a removable cover, which just accesses the blower chamber containing the heat exchanger. There is only an inspection window, and what appears to be wires going to the ignitor on the exchanger.
Here's the manual I found for the NT30-M:
http://www.bdub.net/manuals/SuburbanDynaTrail.pdf
The blower should run first, closing the sail switch, then firing the burner. I get nothing. It does have 13+v going into it.
I don't know what should be coming from the thermostat wire to check it: +, ground, etc?
> To: gmclist@temp.gmcnet.org
> From: markbb1@netzero.com
> Date: Mon, 2 Sep 2013 19:14:12 -0500
> Subject: Re: [GMCnet] Furnace Access
>
>
>
> Jeff Marten wrote on Mon, 02 September 2013 13:31
> > It's good to have uber-anal POs; found the furnace model and serial numbers on a page in the log book I received with the coach (along with model and serial numbers for just about everything else). It's a Suburban NT-30M. The manual I located online says it has to be removed in order to be serviced. I need to verify it is getting power. Manual says the blower should come on, then assuming the sail switch closes, the burner should ignite; says it is electronic ignition, pilot-less.
> Another thing that changed during production I guess. My Operating Manual says you have to light it manually.
>
> LIGHTING FURNACE
> NOTE: Be sure manual control valve at LP gas tank is fully open.
> 1 . Set thermostat, located in rear of Motor Home living area to "OFF" position.
> 2 . Open furnace manual valve fully, located under sink near the sink trap. Do not attempt to operate furnace with valve partly opened as proper operation depends on valve being fully open.
> NOTE: If relighting furnace, close furnace manual valve for 5 minutes, then open manual valve and proceed to next step.
> 3. Remove lighter cap. Depress reset button and hold in. Pump igniter until pilot lights .
> 4. Continue to hold in reset button for 30 seconds after pilot is lighted.
> 5. Install lighter cap.
> 6. Set thermostat to desired temperature.
> NOTE: Furnace pilot may be lit by match if desired, through lighter cap opening.
> --
> '73 23' Sequoia For Camping
> '73 23' CanyonLands For Sale
> UA (Upper Alabama)
> "Time is money. If you use YOUR time, you get to keep YOUR money."
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
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1985 Gulf Stream 34' Sun Stream
1964 Falcon 'Vert
1980 Bradley GTE
1999 Chevy Tahoe
2005 Saab 93 Aero
1987 Suzuki Intruder 1400
1978 Glastron/Carlson CV23
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| Re: [GMCnet] Furnace Access [message #220942 is a reply to message #220928] |
Mon, 02 September 2013 20:28 |
Jeff Marten
Messages: 199
Registered: August 2013
Karma: 1
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Senior Member |
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I have no stove ..... but will soon. The fridge works fine on gas. The furnace should start the blower first, but does nothing.
> To: gmclist@temp.gmcnet.org
> From: tph1pp5@yahoo.com
> Date: Mon, 2 Sep 2013 19:26:09 -0500
> Subject: Re: [GMCnet] Furnace Access
>
>
>
> Turn on the stove top and verify gas flow. Sometimes gas lines are full of air because you turned the feed into the lie of at he tank. May take a bit before gas actually gets to burner. Mine initially took about 30 seconds, as I recall. Is there a reset button? Mine needed to be reset before it would fire up.
> Tom, MS II
> --
> 1975 GMC Avion, under forever re-construction
> Vicksburg, MS. 3.7 miles from I-20
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1985 Gulf Stream 34' Sun Stream
1964 Falcon 'Vert
1980 Bradley GTE
1999 Chevy Tahoe
2005 Saab 93 Aero
1987 Suzuki Intruder 1400
1978 Glastron/Carlson CV23
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| Re: [GMCnet] Furnace Access [message #220982 is a reply to message #220949] |
Tue, 03 September 2013 05:20 |
Bruce Hart
Messages: 1501
Registered: October 2011
Location: La Grange, Wyoming
Karma: 5
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Senior Member |
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Jeff,
I have a newer Suburban furnace. Can you access the side of the furnace
next to the couch. I have an off/on switch on that side of the unit.
On Mon, Sep 2, 2013 at 7:56 PM, A. <markbb1@netzero.com> wrote:
>
>
> Jeff Marten wrote on Mon, 02 September 2013 20:26
> > Where would it be lit? There is no exterior access door. The unit is
> under the sink and has a removable cover, which just accesses the blower
> chamber containing the heat exchanger. There is only an inspection window,
> and what appears to be wires going to the ignitor on the exchanger. ...
> Yours is a newer model. I just cut and pasted the gobbledygook from my
> manual for those that have furnaces with a manually ignited pilot light.
> --
> '73 23' Sequoia For Camping
> '73 23' CanyonLands For Sale
> UA (Upper Alabama)
> "Time is money. If you use YOUR time, you get to keep YOUR money."
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Bruce Hart
1976 Palm Beach
Milliken, Co
GMC=Got More Class
51st State? Northern Colorado!
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Bruce Hart
1976 Palm Beach
1977 28' Kingsley
La Grange, Wyoming
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| Re: [GMCnet] Furnace Access [message #220983 is a reply to message #220982] |
Tue, 03 September 2013 05:27 |
Jeff Marten
Messages: 199
Registered: August 2013
Karma: 1
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Senior Member |
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Is it near the wiring harness connector? I'll have to feel around, see if there is a switch.
> Date: Tue, 3 Sep 2013 04:20:47 -0600
> From: hartsgmc@gmail.com
> To: gmclist@temp.gmcnet.org
> Subject: Re: [GMCnet] Furnace Access
>
> Jeff,
> I have a newer Suburban furnace. Can you access the side of the furnace
> next to the couch. I have an off/on switch on that side of the unit.
>
>
> On Mon, Sep 2, 2013 at 7:56 PM, A. <markbb1@netzero.com> wrote:
>
> >
> >
> > Jeff Marten wrote on Mon, 02 September 2013 20:26
> > > Where would it be lit? There is no exterior access door. The unit is
> > under the sink and has a removable cover, which just accesses the blower
> > chamber containing the heat exchanger. There is only an inspection window,
> > and what appears to be wires going to the ignitor on the exchanger. ...
> > Yours is a newer model. I just cut and pasted the gobbledygook from my
> > manual for those that have furnaces with a manually ignited pilot light.
> > --
> > '73 23' Sequoia For Camping
> > '73 23' CanyonLands For Sale
> > UA (Upper Alabama)
> > "Time is money. If you use YOUR time, you get to keep YOUR money."
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
> >
>
>
>
> --
> Bruce Hart
> 1976 Palm Beach
> Milliken, Co
> GMC=Got More Class
> 51st State? Northern Colorado!
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
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1985 Gulf Stream 34' Sun Stream
1964 Falcon 'Vert
1980 Bradley GTE
1999 Chevy Tahoe
2005 Saab 93 Aero
1987 Suzuki Intruder 1400
1978 Glastron/Carlson CV23
|
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|
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| Re: [GMCnet] Furnace Access [message #220984 is a reply to message #220983] |
Tue, 03 September 2013 05:35 |
Bruce Hart
Messages: 1501
Registered: October 2011
Location: La Grange, Wyoming
Karma: 5
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Senior Member |
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It is a small rocker switch. The size of your small finger from the tip to
the first joint.
On Tue, Sep 3, 2013 at 4:27 AM, Jeff Marten <jtmarten@msn.com> wrote:
> Is it near the wiring harness connector? I'll have to feel around, see if
> there is a switch.
>
> > Date: Tue, 3 Sep 2013 04:20:47 -0600
> > From: hartsgmc@gmail.com
> > To: gmclist@temp.gmcnet.org
> > Subject: Re: [GMCnet] Furnace Access
> >
> > Jeff,
> > I have a newer Suburban furnace. Can you access the side of the furnace
> > next to the couch. I have an off/on switch on that side of the unit.
> >
> >
> > On Mon, Sep 2, 2013 at 7:56 PM, A. <markbb1@netzero.com> wrote:
> >
> > >
> > >
> > > Jeff Marten wrote on Mon, 02 September 2013 20:26
> > > > Where would it be lit? There is no exterior access door. The unit
> is
> > > under the sink and has a removable cover, which just accesses the
> blower
> > > chamber containing the heat exchanger. There is only an inspection
> window,
> > > and what appears to be wires going to the ignitor on the exchanger. ...
> > > Yours is a newer model. I just cut and pasted the gobbledygook from my
> > > manual for those that have furnaces with a manually ignited pilot
> light.
> > > --
> > > '73 23' Sequoia For Camping
> > > '73 23' CanyonLands For Sale
> > > UA (Upper Alabama)
> > > "Time is money. If you use YOUR time, you get to keep YOUR money."
> > > _______________________________________________
> > > GMCnet mailing list
> > > Unsubscribe or Change List Options:
> > > http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
> > >
> >
> >
> >
> > --
> > Bruce Hart
> > 1976 Palm Beach
> > Milliken, Co
> > GMC=Got More Class
> > 51st State? Northern Colorado!
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Bruce Hart
1976 Palm Beach
Milliken, Co
GMC=Got More Class
51st State? Northern Colorado!
_______________________________________________
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Bruce Hart
1976 Palm Beach
1977 28' Kingsley
La Grange, Wyoming
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