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Engine Preheat Switch
02-18-2010, 09:20
Post: #11
Engine Preheat Switch
Mike

The two systems are independent of each other, no connection. I don't really
know the route for the plumbing at the engine, but it is the same path as the
water heater system that heats the water from the engine heat. I'll send you a
PDF, look at the last four they are for the hydronic heat.

In Marble Falls until 4/1 with a trip home to the cold to work for two weeks on
Saturday.

Steve Quandt
1993 PT-40
Iron Mountain MI
now in Marble Falls, TX




--- In WanderlodgeForum@yahoogroups.com, Michael Bulriss <mbulriss@...> wrote:
>
> Thanks for the input Steve! So I guess what you are saying is that when you
use the engine preheat the engine cooling system and the house hydronic heating
system are hooked together and share common fluid when the engine preheat is
used? Correct? Guess I should have flushed the house heating system when I
flushed the engine and put in new diesel antifreeze. Never thought about that
when I flushed the cooling system when we installed the new engine water pump
this summer. Good thing I have not used the Primus, so the new antifreeze
should not have mixed with the old green stuff in the hydronic system, correct?
>
> How long are you in Marble Falls for?
>
> Thanks,
>
> Mike Bulriss
> 1991 WB40 "Texas Minivan"
> San Antonio, TX
>
> --- On Thu, 2/18/10, SteveQ wrote:
>
> From: SteveQ
> Subject: [WanderlodgeForum] Re: Engine Preheat Switch
> To: WanderlodgeForum@yahoogroups.com
> Date: Thursday, February 18, 2010, 9:28 AM
>
>
>
>
>
>
>
> Â
>
>
>
>
>
>
>
>
>
> Rick
>
>
>
> I converted to a Webasto Scholastic unit so I only have one zone. The preheat
pump will work regardless if there is heat or not.
>
>
>
> Steve Quandt
>
> 1993 PT-40
>
> Iron Mountain MI
>
> now in Marble Falls, TX
>
>
>
> --- In WanderlodgeForum@ yahoogroups. com, Rick Davis wrote:
>
> >
>
> > Steve, your Primus has to be turned on for that upper dash switch to
circulate fluid to the engine, right? And if so, my coach as two boilers for
two zones, so which zone needs to be activated for that engine preheat to work?
>
> >
>
> > Rick Davis
>
> > 1993 WBSA
>
> > Loudon, TN
>
> > (in New Orleans)
>
> >
>
> >
>
> >
>
> >
>
> > ____________ _________ _________ __
>
> > From: SteveQ
>
> > To: WanderlodgeForum@ yahoogroups. com
>
> > Sent: Wed, February 17, 2010 7:01:05 PM
>
> > Subject: [WanderlodgeForum] Re: Engine Preheat Switch
>
> >
>
> > ÂÂ
>
> > Mike
>
> >
>
> > On to the left, off to the right on my 93. There is a pump, I think it is
twelve volts that is behind my house battery trays. It circulates warm hot water
/ antifrezze mix to the engine and I think the hot water heater from you Primus
or Webasto unit. I found mine this summer when I turned on the switch and heard
it.
>
> >
>
> > Enjoying the weather in the Texas Hill country, above zero and no snow to
shovel
>
> >
>
> > Steve Quandt
>
> > 1993 PT-40
>
> > Iron Mountain MI
>
> > now in Marble Falls, TX
>
> >
>
> > --- In WanderlodgeForum@ yahoogroups. com, "mbulriss" <mbulriss@ .> wrote:
>
> > >
>
> > > OK, I have one of those how-to questions that is not answered in 'the
book'. On my 91 on the far left topmost driver overhead dash panel, there is a
black two position toggle switch labeled "Engine Preheat" - that's it, no "on"
or "off" indication, no light. My question is: Is "on" when the switch is
toggled in to the left side or the right side of the switch? What kind of
electrical draw should I see on any of the gauges when it is on - *if* it is
working?
>
> > >
>
> > > Normally, we try to stay out of such climates where I would actually need
said switch, until this past weekend in the Texas hills where it got well below
freezing. ;^)
>
> > >
>
> > > Thanks,
>
> > >
>
> > > Mike Bulriss
>
> > > 1991 WB40 "Texas Minivan"
>
> > > San Antonio, TX
>
> > >
>
> >
>
Quote this message in a reply
02-18-2010, 09:26
Post: #12
Engine Preheat Switch
Rick

The heat is from the boilers, but the pump that circulates the fluid will work
regardless if there is heat or not. If you run the pump while you are driving
the engine is supposed to heat the fluid and allow you the heat the coach using
the engine not the boilers as the heat source. That is accoring to my owners
manual. I have never tried it.

Steve Quandt
1993 PT-40
Iron Mountain MI
now in Marble Falls, TX




--- In WanderlodgeForum@yahoogroups.com, Rick Davis wrote:
>
> Steve, if not the hydronic boiler, then where does your dash Preheat switch
gets its heat source from to heat the hydronic coolant fluid to heat the
engine?
>
> Rick Davis
> 1993 WBSA
> Loudon, TN
> (in New Orleans)
>
>
>
> ________________________________
> From: Michael Bulriss <mbulriss@...>
> To: WanderlodgeForum@yahoogroups.com
> Sent: Thu, February 18, 2010 12:03:47 PM
> Subject: Re: [WanderlodgeForum] Re: Engine Preheat Switch
>
> Â
> Thanks for the input Steve! So I guess what you are saying is that when you
use the engine preheat the engine cooling system and the house hydronic heating
system are hooked together and share common fluid when the engine preheat is
used? Correct? Guess I should have flushed the house heating system when I
flushed the engine and put in new diesel antifreeze. Never thought about that
when I flushed the cooling system when we installed the new engine water pump
this summer. Good thing I have not used the Primus, so the new antifreeze
should not have mixed with the old green stuff in the hydronic system, correct?
>
> How long are you in Marble Falls for?
>
> Thanks,
>
> Mike Bulriss
> 1991 WB40 "Texas Minivan"
> San Antonio, TX
>
> --- On Thu, 2/18/10, SteveQ wrote:
>
>
> >From: SteveQ
> >Subject: [WanderlodgeForum] Re: Engine Preheat Switch
> >To: WanderlodgeForum@ yahoogroups. com
> >Date: Thursday, February 18, 2010, 9:28 AM
> >
> >
> >Â
> >Rick
> >
> >I converted to a Webasto Scholastic unit so I only have one zone. The preheat
pump will work regardless if there is heat or not.
> >
> >Steve Quandt
> >1993 PT-40
> >Iron Mountain MI
> >now in Marble Falls, TX
> >
> >--- In WanderlodgeForum@ yahoogroups. com, Rick Davis wrote:
> >>
> >> Steve, your Primus has to be turned on for that upper dash switch to
circulate fluid to the engine, right? And if so, my coach as two boilers for
two zones, so which zone needs to be activated for that engine preheat to work?
> >>
> >> Rick Davis
> >> 1993 WBSA
> >> Loudon, TN
> >> (in New Orleans)
> >>
> >>
> >>
> >>
> >> ____________ _________ _________ __
> >> From: SteveQ
> >> To: WanderlodgeForum@ yahoogroups. com
> >> Sent: Wed, February 17, 2010 7:01:05 PM
> >> Subject: [WanderlodgeForum] Re: Engine Preheat Switch
> >>
> >> ÂÂ
> >> Mike
> >>
> >> On to the left, off to the right on my 93. There is a pump, I think it is
twelve volts that is behind my house battery trays. It circulates warm hot water
/ antifrezze mix to the engine and I think the hot water heater from you Primus
or Webasto unit. I found mine this summer when I turned on the switch and heard
it.
> >>
> >> Enjoying the weather in the Texas Hill country, above zero and no snow to
shovel
> >>
> >> Steve Quandt
> >> 1993 PT-40
> >> Iron Mountain MI
> >> now in Marble Falls, TX
> >>
> >> --- In WanderlodgeForum@ yahoogroups. com, "mbulriss" <mbulriss@ .> wrote:
> >> >
> >> > OK, I have one of those how-to questions that is not answered in 'the
book'. On my 91 on the far left topmost driver overhead dash panel, there is a
black two position toggle switch labeled "Engine Preheat" - that's it, no "on"
or "off" indication, no light. My question is: Is "on" when the switch is
toggled in to the left side or the right side of the switch? What kind of
electrical draw should I see on any of the gauges when it is on - *if* it is
working?
> >> >
> >> > Normally, we try to stay out of such climates where I would actually need
said switch, until this past weekend in the Texas hills where it got well below
freezing. ;^)
> >> >
> >> > Thanks,
> >> >
> >> > Mike Bulriss
> >> > 1991 WB40 "Texas Minivan"
> >> > San Antonio, TX
> >> >
> >>
> >
> >
>
Quote this message in a reply
02-18-2010, 10:01
Post: #13
Engine Preheat Switch
The AquaHot (and presumably the earlier systems) use heat exchangers to keep the AH (or furnace) hydronic heating fluid separate from the engine coolant -- and the domestic hot water. On the road, the engine warms the domestic hot water.
Pete Masterson
(former) '95 Blue Bird Wanderlodge WBDA 42
El Sobrante CA
"aeonix1@mac.com"



On Feb 18, 2010, at 1:20 PM, smquandt wrote:

Mike

The two systems are independent of each other, no connection. I don't really know the route for the plumbing at the engine, but it is the same path as the water heater system that heats the water from the engine heat. I'll send you a PDF, look at the last four they are for the hydronic heat.

In Marble Falls until 4/1 with a trip home to the cold to work for two weeks on Saturday.

Steve Quandt
1993 PT-40
Iron Mountain MI
now in Marble Falls, TX




--- In "WanderlodgeForum@yahoogroups.com", Michael Bulriss <mbulriss@...> wrote:
Thanks for the input Steve! So I guess what you are saying is that when you use the engine preheat the engine cooling system and the house hydronic heating system are hooked together and share common fluid when the engine preheat is used? Correct? Guess I should have flushed the house heating system when I flushed the engine and put in new diesel antifreeze. Never thought about that when I flushed the cooling system when we installed the new engine water pump this summer. Good thing I have not used the Primus, so the new antifreeze should not have mixed with the old green stuff in the hydronic system, correct?
How long are you in Marble Falls for?
Thanks,
Mike Bulriss
1991 WB40 "Texas Minivan"
San Antonio, TX
--- On Thu, 2/18/10, SteveQ wrote:
From: SteveQ
Subject: [WanderlodgeForum] Re: Engine Preheat Switch
To: "WanderlodgeForum@yahoogroups.com"
Date: Thursday, February 18, 2010, 9:28 AM
Â
Rick
I converted to a Webasto Scholastic unit so I only have one zone. The preheat pump will work regardless if there is heat or not.
Steve Quandt
1993 PT-40
Iron Mountain MI
now in Marble Falls, TX
--- In WanderlodgeForum@ yahoogroups. com, Rick Davis wrote:
Steve, your Primus has to be turned on for that upper dashÂÂswitch to circulate fluid to the engine, right? And if so, my coach as two boilers for two zones, so which zone needs to be activated for that engine preheat to work?
Rick Davis
1993 WBSA
Loudon, TN
(in New Orleans)
____________ _________ _________ __
From: SteveQ
To: WanderlodgeForum@ yahoogroups. com
Sent: Wed, February 17, 2010 7:01:05 PM
Subject: [WanderlodgeForum] Re: Engine Preheat Switch
ÂÂ
Mike
On to the left, off to the right on my 93. There is a pump, I think it is twelve volts that is behind my house battery trays. It circulates warm hot water / antifrezze mix to the engine and I think the hot water heater from you Primus or Webasto unit. I found mine this summer when I turned on the switch and heard it.
Enjoying the weather in the Texas Hill country, above zero and no snow to shovel
Steve Quandt
1993 PT-40
Iron Mountain MI
now in Marble Falls, TX
--- In WanderlodgeForum@ yahoogroups. com, "mbulriss" <mbulriss@ .> wrote:
OK, I have one of those how-to questions that is not answered in 'the book'. On my 91 on the far left topmost driver overhead dash panel, there is a black two position toggle switch labeled "Engine Preheat" - that's it, no "on" or "off" indication, no light. My question is: Is "on" when the switch is toggled in to the left side or the right side of the switch? What kind of electrical draw should I see on any of the gauges when it is on - *if* it is working?
Normally, we try to stay out of such climates where I would actually need said switch, until this past weekend in the Texas hills where it got well below freezing. ;^)
Thanks,
Mike Bulriss
1991 WB40 "Texas Minivan"
San Antonio, TX



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Quote this message in a reply
02-18-2010, 11:15
Post: #14
Engine Preheat Switch
George, you pretty much have to get south of Corpus Christi to miss most of the bad weather. We winter on South Padre Island and the temps are usually in the 60's+, although not true this winter. There are more parks in the Reo Grand valley than you can imagine, and there all types and quality. It is necessary to make a full inquiry for long term camping. This park is KOA and is not cheap; there are many other parks, you just have to look.
Hope this helps.
Wallace Craig
95 WLWB 42
Azle, Texas

--- On Thu, 2/18/10, George Burke wrote:

From: George Burke
Subject: Re: [WanderlodgeForum] Re: Engine Preheat Switch
To: WanderlodgeForum@yahoogroups.com
Date: Thursday, February 18, 2010, 2:25 PM





Wallace, I said when I left the USAF in Feb.1971, that I wouldn't be caught north of the Mason-Dixon ever again in the winter. That was after spending 3 winters in Ma., and myfinal onein Alaska. Has worked well until this winter, now this warming thing that folks keep talking about has moved partly to Canada, and left N.C. in the deep freeze. Think I might have to move tomid Fl. or southern Tx. I have lived here all my life, and am getting to old to put up with extended cold spells. Is Livingston a good place to spend the winter? I have heard that a lot of full timers winter there. My daughter lives in San Antonio, but will be vacating there in a couple yrs. at most, so we would have no reason to be there after that. I know that you folks in Tx.,Ok., etc.have been putting up with cold weather as well. I just want to know , who is holding up thewarming spell? George Burke 1977 FC31 Charlotte

On Thu, Feb 18, 2010 at 2:57 PM, Wallace Craig <wallacecraig1@...> wrote:

Mike, I have two engine heating sources. One is a block heater which is turned on under the kitchen sink. The switch above the drivers left side is for the AH system. This is as I understand it from Ralph; I claim no personal expertise whatsoever. Nothing was said to me about doing anything other than turningon the overhead switch;i.e., no need to otherwise activate the AH.Best solution, stay south of the Mason-Dixon line as much as possible.


Wallace Craig
95 WLWB 42
Azle, Texas

--- On Thu, 2/18/10, Michael Bulriss <mbulriss@...> wrote:

From: Michael Bulriss <mbulriss@...>
Subject: Re: [WanderlodgeForum] Re: Engine Preheat Switch
To: WanderlodgeForum@yahoogroups.com
Date: Thursday, February 18, 2010, 12:03 PM




Thanks for the input Steve! So I guess what you are saying is that when you use the engine preheat the engine cooling system and the house hydronic heating system are hooked together and share common fluid when the engine preheat is used? Correct? Guess I should have flushed the house heating system when I flushed the engine and put in new diesel antifreeze. Never thought about that when I flushed the cooling system when we installed the new engine water pump this summer. Good thing I have not used the Primus, so the new antifreeze should not have mixed with the old green stuff in the hydronic system, correct?

How long are you in Marble Falls for?

Thanks,

Mike Bulriss
1991 WB40 "Texas Minivan"
San Antonio, TX

--- On Thu, 2/18/10, SteveQ <smquandt@...> wrote:

From: SteveQ <smquandt@...>
Subject: [WanderlodgeForum] Re: Engine Preheat Switch
To: WanderlodgeForum@yahoogroups.com
Date: Thursday, February 18, 2010, 9:28 AM


Rick

I converted to a Webasto Scholastic unit so I only have one zone. The preheat pump will work regardless if there is heat or not.

Steve Quandt
1993 PT-40
Iron Mountain MI
now in Marble Falls, TX

--- In WanderlodgeForum@ yahoogroups. com, Rick Davis wrote:
>
> Steve, your Primus has to be turned on for that upper dashÂswitch to circulate fluid to the engine, right? And if so, my coach as two boilers for two zones, so which zone needs to be activated for that engine preheat to work?
>
> Rick Davis
> 1993 WBSA
> Loudon, TN
> (in New Orleans)
>
>
>
>
> ____________ _________ _________ __
> From: SteveQ
> To: WanderlodgeForum@ yahoogroups. com
> Sent: Wed, February 17, 2010 7:01:05 PM
> Subject: [WanderlodgeForum] Re: Engine
Preheat Switch
>
> Â
> Mike
>
> On to the left, off to the right on my 93. There is a pump, I think it is twelve volts that is behind my house battery trays. It circulates warm hot water / antifrezze mix to the engine and I think the hot water heater from you Primus or Webasto unit. I found mine this summer when I turned on the switch and heard it.
>
> Enjoying the weather in the Texas Hill country, above zero and no snow to shovel
>
> Steve Quandt
> 1993 PT-40
> Iron Mountain MI
> now in Marble Falls, TX
>
> --- In WanderlodgeForum@ yahoogroups. com, "mbulriss" <mbulriss@ .> wrote:
> >
> > OK, I have one of those how-to questions that is not answered in 'the book'. On my 91 on the far left topmost driver overhead dash panel, there is a black two position toggle switch labeled "Engine Preheat" - that's it, no "on" or "off" indication,
no light. My question is: Is "on" when the switch is toggled in to the left side or the right side of the switch? What kind of electrical draw should I see on any of the gauges when it is on - *if* it is working?
> >
> > Normally, we try to stay out of such climates where I would actually need said switch, until this past weekend in the Texas hills where it got well below freezing. ;^)
> >
> > Thanks,
> >
> > Mike Bulriss
> > 1991 WB40 "Texas Minivan"
> > San Antonio, TX
> >
>







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