Home » Public Forums » GMCnet » Re: [GMCnet] Tankless hot water heater"
Re: [GMCnet] Tankless hot water heater" [message #326512] |
Wed, 29 November 2017 21:50 |
Thomas Pryor
Messages: 143 Registered: January 2011
Karma: 1
|
Senior Member |
|
|
I watched this subject being discussed over the Past several years and
wondered why folks don't use the engine driven hot water feature in many of
our OEM style hot water tanks. in other words use 180-210 hot water from
engine coolant to heat water in the hot water tank fitted with a HEAT
EXCHANGER. My Wife and our family sailed on the Great Lakes for about 18
years and had no lack of Hot water. Sailors are conservative bunch so we
became accustomed to dealing with "dry camping" life style. Would always
run the Diesel engine for 30 minutes each day and always had hot water for
dishes and showers. (Navy Showers)
If your hot water tank is not fitted with the heat exchanger option you owe
it to your self to check it out!
See:
https://www.walmart.com/ip/Kuuma-120V-Front-Mount-Water-
Heater-with-Heat-Exchange/33982683?wmlspartner=wlpa&
selectedSellerId=2132&adid=22222222227022531264&wl0=&wl1=
s&wl2=c&wl3=40970775992&wl4=pla-78913532192&wl5=9012200&
wl6=&wl7=&wl8=&wl9=pla&wl10=113146354&wl11=online&wl12=
33982683&wl13=&veh=sem
FROM APPLIED GMC SEE: http://www.appliedgmc.com/prod.itml/icOid/518
--
Regards,
Tom Pryor
4188 Limerick Dr
Lake Wales, Fl 33859
Cell 248 470 9186
Living on a waterfront is not a matter of life or death. Its more
important than that.
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
|
|
|
Re: [GMCnet] Tankless hot water heater" [message #326513 is a reply to message #326512] |
Wed, 29 November 2017 22:25 |
Burt and Faye curtis
Messages: 256 Registered: June 2012
Karma: 4
|
Senior Member |
|
|
Tom,
To answer why not, sometimes I dry camp for several says without moving
coach, so engine heat is not good option. Same for electric only water
heater.
Also don't want to run engine or sometimes generator just to heat water,
especially when already have propane on board. Hence when came time to
replace water heater, seemed liked the best was to replace with tankless
heater.
Fay Curtis
Kneeland, .ca
76 Glenbrook
On Wednesday, November 29, 2017, Thomas Pryor wrote:
> I watched this subject being discussed over the Past several years and
> wondered why folks don't use the engine driven hot water feature in many of
> our OEM style hot water tanks. in other words use 180-210 hot water from
> engine coolant to heat water in the hot water tank fitted with a HEAT
> EXCHANGER. My Wife and our family sailed on the Great Lakes for about 18
> years and had no lack of Hot water. Sailors are conservative bunch so we
> became accustomed to dealing with "dry camping" life style. Would always
> run the Diesel engine for 30 minutes each day and always had hot water for
> dishes and showers. (Navy Showers)
>
> If your hot water tank is not fitted with the heat exchanger option you owe
> it to your self to check it out!
> See:
>
> https://www.walmart.com/ip/Kuuma-120V-Front-Mount-Water-
> Heater-with-Heat-Exchange/33982683?wmlspartner=wlpa&
> selectedSellerId=2132&adid=22222222227022531264&wl0=&wl1=
> s&wl2=c&wl3=40970775992&wl4=pla-78913532192&wl5=9012200&
> wl6=&wl7=&wl8=&wl9=pla&wl10=113146354&wl11=online&wl12=
> 33982683&wl13=&veh=sem
>
> FROM APPLIED GMC SEE: http://www.appliedgmc.com/prod.itml/icOid/518
> --
> Regards,
>
> Tom Pryor
> 4188 Limerick Dr
> Lake Wales, Fl 33859
> Cell 248 470 9186
>
> Living on a waterfront is not a matter of life or death. Its more
> important than that.
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
|
|
|
|
Re: [GMCnet] Tankless hot water heater" [message #326521 is a reply to message #326515] |
Thu, 30 November 2017 03:22 |
Olly Schmidt
Messages: 1265 Registered: February 2014 Location: Germany and Scottsville, ...
Karma: 8
|
Senior Member |
|
|
Sammy Williams schrieb/wrote
> That is good information, however my usage of a GMC will be off the grid
> and the unit still for up to a week or so. The hot water heater will have
> the duty to run without engine assistance.b
Instead of LPG, I'll be using gasoline utilizing Eberspächer Hydronic
B5WS connected to the coolant circuitry in my 23' - heats the engine
with a coolant to air heat exchanger, and the water with the original
coolant to water exchanger.
--
Best regards
Peer Oliver Schmidt
PGP Key ID: 0x83E1C2EA
'76a Eleganza II 26', VA
'73 Sequoia 23', Germany, SH
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
Best regards
Olly Schmidt
PGP Key ID: 0x18a9 3a1f 4196 bf22
'76a Eleganza II, VA
'73 Sequoia, SH, Germany
|
|
|
Re: [GMCnet] Tankless hot water heater" [message #326525 is a reply to message #326521] |
Thu, 30 November 2017 07:12 |
tphipps
Messages: 3005 Registered: August 2004 Location: Spanish Fort, AL
Karma: 9
|
Senior Member |
|
|
While the engine coolant heated hot water is nice, remember that it is much hotter than typical house hot water. Also, if you have one, pay attention to those long hoses. A break will cost you an engine. Don't learn the hard way like I did. If you are not using this function, install cut-off valves in both lines and turn them off. Better yet, replace those 40 year old hoses.
Tom
2012 Phoenix Cruiser model 2552
KA4CSG
|
|
|
Re: [GMCnet] Tankless hot water heater" [message #326531 is a reply to message #326525] |
Thu, 30 November 2017 09:15 |
Ray Erspamer
Messages: 1707 Registered: May 2007 Location: Milwaukee Wisconsin
Karma: -3
|
Senior Member |
|
|
One way to think about this is that the tankless water heater is only using propane when the water is running.....and really, how often is that?? Not very much.
Just another thing I've done, we do mostly boon-docking. So I built what I call a "water wagon". We go and fill it at the pump or water station, wheel it back and connect it to the city water connection and I have a plug on the side of the coach for the 12vdc power for the pump. I host a primitive campground every summer for 5 weeks and this makes my resupplying of water a piece of cake.
Water Wagon.....
http://www.gmcmhphotos.com/photos/g6747-water-wagon.html
Ray Erspamer
78 GMC Royale Center Kitchen
403, 3.70 Final Drive
Holley Sniper Quadrajet EFI System,
Holley Hyperspark Ignition System
414-484-9431
|
|
|
Re: [GMCnet] Tankless hot water heater" [message #326534 is a reply to message #326531] |
Thu, 30 November 2017 09:34 |
|
USAussie
Messages: 15912 Registered: July 2007 Location: Sydney, Australia
Karma: 6
|
Senior Member |
|
|
Ray,
You are one CLEVER BUGGER as we say Downunder!
Regards,
Rob M.
The Pedantic Mechanic
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
USA '77 Kingsley - TZE 267V100808
-----Original Message-----
From: Gmclist [mailto:gmclist-bounces@list.gmcnet.org] On Behalf Of Ray Erspamer
Sent: Thursday, November 30, 2017 9:16 AM
To: gmclist@list.gmcnet.org
Subject: Re: [GMCnet] Tankless hot water heater"
One way to think about this is that the tankless water heater is only using propane when the water is running.....and really, how
often is that?? Not
very much.
Just another thing I've done, we do mostly boon-docking. So I built what I call a "water wagon". We go and fill it at the pump or
water station, wheel it back and connect it to the city water connection and I have a plug on the side of the coach for the 12vdc
power for the pump. I host a primitive campground every summer for 5 weeks and this makes my resupplying of water a piece of cake.
Water Wagon.....
http://www.gmcmhphotos.com/photos/g6747-water-wagon.html
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
|
|
|
Re: [GMCnet] Tankless hot water heater" [message #326537 is a reply to message #326525] |
Thu, 30 November 2017 09:40 |
Olly Schmidt
Messages: 1265 Registered: February 2014 Location: Germany and Scottsville, ...
Karma: 8
|
Senior Member |
|
|
Thanks for the cautious words. The coolant hoses are all new, and all I add to the original install is the gas powered heater up front and the water to air on the coolants way back to coolant to water heater near the bath.
--
Best regards
Peer Oliver Schmidt
'76a Eleganza II, VA
'73 Sequoia, Germany
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
Best regards
Olly Schmidt
PGP Key ID: 0x18a9 3a1f 4196 bf22
'76a Eleganza II, VA
'73 Sequoia, SH, Germany
|
|
|
|
Re: [GMCnet] Tankless hot water heater" [message #326665 is a reply to message #326608] |
Sun, 03 December 2017 00:53 |
Hal StClair
Messages: 971 Registered: March 2013 Location: Rio Rancho NM
Karma: -12
|
Senior Member |
|
|
Oliver, how many BTU's is that unit? You have room for it up front under the hatch? Shift the batteries to the drivers side I'd guess?
Hal
"I enjoy talking to you. Your mind appeals to me. It resembles my own mind, except you happen to be insane."
1977 Royale 101348,
1977 Royale 101586, Diesel powered,
1974 Eagle Bus 45',w/slideout,
Rio Rancho, NM
|
|
|
Re: [GMCnet] Tankless hot water heater" [message #326680 is a reply to message #326665] |
Sun, 03 December 2017 11:04 |
Ray Erspamer
Messages: 1707 Registered: May 2007 Location: Milwaukee Wisconsin
Karma: -3
|
Senior Member |
|
|
On the standard GMC layouts, there's plenty of room behind the refrigerator for it and then there is the roof vent for the water heater venting.
Our model 6L is approx. 40,000 btu.
Ray Erspamer
78 GMC Royale Center Kitchen
403, 3.70 Final Drive
Holley Sniper Quadrajet EFI System,
Holley Hyperspark Ignition System
414-484-9431
[Updated on: Sun, 03 December 2017 11:05] Report message to a moderator
|
|
|
Re: [GMCnet] Tankless hot water heater" [message #326692 is a reply to message #326665] |
Sun, 03 December 2017 15:55 |
Olly Schmidt
Messages: 1265 Registered: February 2014 Location: Germany and Scottsville, ...
Karma: 8
|
Senior Member |
|
|
Hal StClair schrieb/wrote
> Oliver, how many BTU's is that unit? You have room for it up front under the hatch? Shift the batteries to the drivers side I'd guess?
It is a 5kW unit, whatever that is in BTU.
I just looked at the heater. It is soo small, that it will be mounted at
the back of the step to the cockpit.
--
Best regards
Peer Oliver Schmidt
PGP Key ID: 0x83E1C2EA
'76a Eleganza II 26', VA
'73 Sequoia 23', Germany, SH
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
Best regards
Olly Schmidt
PGP Key ID: 0x18a9 3a1f 4196 bf22
'76a Eleganza II, VA
'73 Sequoia, SH, Germany
|
|
|
Re: [GMCnet] Tankless hot water heater" [message #326702 is a reply to message #326692] |
Sun, 03 December 2017 17:38 |
Emery Stora
Messages: 959 Registered: January 2011
Karma: 4
|
Senior Member |
|
|
That is about 17000 btu.
Emery Stora
> On Dec 3, 2017, at 2:55 PM, Peer Oliver Schmidt GMC wrote:
>
> Hal StClair schrieb/wrote
>> Oliver, how many BTU's is that unit? You have room for it up front under the hatch? Shift the batteries to the drivers side I'd guess?
>
> It is a 5kW unit, whatever that is in BTU.
>
> I just looked at the heater. It is soo small, that it will be mounted at
> the back of the step to the cockpit.
>
> --
> Best regards
>
> Peer Oliver Schmidt
> PGP Key ID: 0x83E1C2EA
>
> '76a Eleganza II 26', VA
> '73 Sequoia 23', Germany, SH
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
|
|
|
Re: [GMCnet] Tankless hot water heater" [message #326713 is a reply to message #326702] |
Sun, 03 December 2017 23:50 |
Olly Schmidt
Messages: 1265 Registered: February 2014 Location: Germany and Scottsville, ...
Karma: 8
|
Senior Member |
|
|
Emery Stora schrieb/wrote
> That is about 17000 btu.
Is that considered good enough for a 23' in an area that is temperature
wise comparable to say Seattle?
--
Best regards
Peer Oliver Schmidt
PGP Key ID: 0x83E1C2EA
'76a Eleganza II 26', VA
'73 Sequoia 23', Germany, SH
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
Best regards
Olly Schmidt
PGP Key ID: 0x18a9 3a1f 4196 bf22
'76a Eleganza II, VA
'73 Sequoia, SH, Germany
|
|
|
Re: [GMCnet] Tankless hot water heater" [message #326719 is a reply to message #326713] |
Mon, 04 December 2017 08:34 |
Ray Erspamer
Messages: 1707 Registered: May 2007 Location: Milwaukee Wisconsin
Karma: -3
|
Senior Member |
|
|
We live in Wisconsin and have camped in Northern Wisconsin when there's been snow on the ground and outside temps of 25. Our Aqua 6L worked fine.
And although it's right next to the refrigerator side wall exterior vent, there's enough interior coach heat in that area to prevent any chance of freezing.
https://aquahstore.com/catalog/
Ray Erspamer
78 GMC Royale Center Kitchen
403, 3.70 Final Drive
Holley Sniper Quadrajet EFI System,
Holley Hyperspark Ignition System
414-484-9431
[Updated on: Mon, 04 December 2017 08:35] Report message to a moderator
|
|
|
Re: [GMCnet] Tankless hot water heater" [message #326726 is a reply to message #326719] |
Mon, 04 December 2017 11:05 |
Hal StClair
Messages: 971 Registered: March 2013 Location: Rio Rancho NM
Karma: -12
|
Senior Member |
|
|
Ray Erspamer wrote on Mon, 04 December 2017 07:34We live in Wisconsin and have camped in Northern Wisconsin when there's been snow on the ground and outside temps of 25. Our Aqua 6L worked fine.
And although it's right next to the refrigerator side wall exterior vent, there's enough interior coach heat in that area to prevent any chance of freezing.
https://aquahstore.com/catalog/
There seems to be a misunderstanding here on the heaters.
Oliver is discussing a gas fired boiler to heat water with a hydronic system to heat the coach. The tank less heaters being discussed pertain to domestic water heating.
Oliver, the 17,000 BTU will 'probably' work but it will be marginal with the original insulation I'd guess. Didn't the coach come with a 24 or 30,000 BTU heater from the factory?
Hal
"I enjoy talking to you. Your mind appeals to me. It resembles my own mind, except you happen to be insane."
1977 Royale 101348,
1977 Royale 101586, Diesel powered,
1974 Eagle Bus 45',w/slideout,
Rio Rancho, NM
[Updated on: Mon, 04 December 2017 11:06] Report message to a moderator
|
|
|
Re: [GMCnet] Tankless hot water heater" [message #326733 is a reply to message #326680] |
Mon, 04 December 2017 13:23 |
rjw
Messages: 697 Registered: September 2005
Karma: 4
|
Senior Member |
|
|
Ray Erspamer wrote on Sun, 03 December 2017 12:04On the standard GMC layouts, there's plenty of room behind the refrigerator for it and then there is the roof vent for the water heater venting.
Our model 6L is approx. 40,000 btu.
Ray,
I used your setup as a guide when I decided to install a tankless water heater about 7 years ago. I had to modify your approach since you, as I recall, don't have a standard GMC layout.
I wanted to keep the original (actually had upgraded it to stainless steel a few years earlier) water heater with electric and the engine coolant loop. I wanted to be able to use the OEM when plugged in and the tankless when dry camping.
I plumbed it so that I could isolate the tankless heater from the plumbing when in potentially freezing weather (i.e. winterize it separate) on the way to or on the way back from warmer weather. We seldom dry camp in freezing weather.
The tankless water heater is installed behind my 3-way gas reefer.
I am very happy with having a tankless water heater.
I did a presentation at the Goshen 2011 GMCMI rally about my install and have included a link here to that presentation. It is a long presentation (70 slides) and I go into detail about what I did.
http://www.palmbeachgmc.com/PDF/tankless-heater.pdf
The only downside to my current setup is that the water temperature can fluctuate during "navy showers". Happens when the water is shut off to soap up, and then turned back on to rinse. At that time you can get hit with a shot of cold water which is annoying if you don't know its coming. I plan on adding a mixing valve to modulate the temperature if I ever get around to it.
Richard
76 Palm Beach
SE Michigan
www.PalmBeachGMC.com
Roller Cam 455, TBI+EBL, 3.42 FD, 4 Bag, Macerator, Lenzi (brakes, vacuum system, front end stuff), Manny Tranny, vacuum step, Tankless + OEM water heaters.
|
|
|
|
|
Re: [GMCnet] Tankless hot water heater" [message #328274 is a reply to message #328272] |
Tue, 16 January 2018 05:21 |
|
USAussie
Messages: 15912 Registered: July 2007 Location: Sydney, Australia
Karma: 6
|
Senior Member |
|
|
Emery,
The storage unit for the Kingsley in Houston has a 120 VAC / 50 amp service included in the monthly cost, I would like to have one
of the heaters you have for when I work on it when it's cold.
Where did you get the 5000 watt heater?
Regards,
Rob M.
The Pedantic Mechanic
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
USA '77 Kingsley - TZE 267V100808
-----Original Message-----
From: Gmclist [mailto:gmclist-bounces@list.gmcnet.org] On Behalf Of Emery Stora
Sent: Tuesday, January 16, 2018 3:22 PM
To: gmclist@list.gmcnet.org
Subject: Re: [GMCnet] Tankless hot water heater"
I would think so. 17,000 BTU is equivalent to 5000 watts.
The little electric heaters some use in their motor homes are usually 1500 watts and draw about 12 to 13 amp at 120 volts.
I use a 5000 watt electric heater in my workshop in the winter here in Colorado and I have to keep shutting it off because it gets
too hot in the 20ft x 30ft shop.
Emery Stora
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
|
|
|
Goto Forum:
Current Time: Fri Mar 29 07:27:06 CDT 2024
Total time taken to generate the page: 0.01992 seconds
|