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Old 03-26-2016, 01:32 AM   #11
onemanvan
 
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Default Re: Mod Idea--Electric MiniTank Hot Water

Just remove three screws - accessible from inside the clothes closet. Might have to remove some of the door hardware - stricker plate & upper catch. Before reinstalling had to ream out the holes a little bit in the channel that holds the bottom of the mirror. The screws were very difficult to get in/out. It's a tight fit - you have to wiggle and finagle the glass to get it into the upper channel. I also was unsure how tight to crank down on the lower screws. At last I decided to go with minimal torque. It's really the foam rubber that holds the mirror in place. The channels are just there to press the glass against the foam rubber.
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Old 03-26-2016, 07:40 AM   #12
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Default Re: Mod Idea--Electric MiniTank Hot Water

On boats the hot water heater has a heat loop from the engine so hot engine coolant heats the water with 120 VAC backup. A clever person might be able to tie into the Espar engine coolant heater and use it to heat the water when the engine is not running!

http://www.westmarine.com/buy/west-m...unts--13915103

Rob
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Old 11-14-2016, 06:38 AM   #13
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Default Re: Mod Idea--Electric MiniTank Hot Water

Note: If permanently remove coach air conditioner, look into whether existing 12 volt and 120 volt cables for the air conditioner can be reused for an electric hot water heater. The 12 volt might be thick enough for a 12 v heating element--and would run off engine alternator.

120.v cables tie back to the circuit breaker so would operate off shorepower or generator. Alternatively, could be used as wiring for an inverter output.
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Old 11-14-2016, 06:48 AM   #14
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Default Re: Mod Idea--Electric MiniTank Hot Water

OneManVan's photos of where Jamees Cook Truma boiler was located--presumably, the boiler was installed either through that small opening or through the exterior vent opening on fiberglass.

The space might be big enough for a small minitank hot water heater but may not fit through that small opening behind mirror.

Suburban hot water location might be easiest for retrofit as plumbing hookups already there. Even if close off exterior van body like Discus did, the bottom door would probably be big enough to install a minitank.

Under the van body might be possible too.
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Old 11-14-2016, 06:53 AM   #15
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Default Re: Mod Idea--Electric MiniTank Hot Water

If eliminated all propane (generator, hot water heater and cooktop), would open up space where propane tank is located. Former propane tank space could be used for hot water heater, extra water tank, extra air heater, combo air and water heater, etc.

Would need an induction cooktop off inverter (or diesel cooktop) and electric or diesel hot water heater.
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Old 12-03-2016, 04:01 AM   #16
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Default Re: Mod Idea--Electric MiniTank Hot Water

Aha! The James Cook version has a bigger opening (and space?) behind mirror for the Truma water boiler.
See photos on this thread and James Cook Friends forum.

http://forum.james-cook-freunde.de/v...hp?f=16&t=5082.
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Old 08-06-2017, 05:56 PM   #17
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Default Re: Mod Idea--Electric MiniTank Hot Water

Getting closer to someone coming up with a mini hot water heater for mod idea--VanWurks sells a tiny water heater which heats off 12v and 240v. Really too tiiny unless never use shower.

If one did not want and removed the Kerstner AC, one could use the 12v AC cables from the engine battery (identified by other posters) and the AC 120v cables. The cables are in the right place for a replacement electric water heater. But note that other posters found the AC cables did not utiize house batteries so 12v would only be available if engine alternator is running.

Note: No hookup to house batteries also means no solar panel diversion load could be set up.

So would need a 12v and 120v mini hot water heater. Here is a dual heating element from eMarine for a 12v 300 watt and 120v 500 watt setup.

https://www.emarineinc.com/Water-Hea...ement-12V-300W

And here is the complete package but with wrong 240v voltage:

http://www.vanwurks.co.uk/campervan-...th-mixer-valve

Vanwurks 12/240V Mini 6 Litre Water Heater with Mixer Valve
299.95

The Vanwurks 12/240V mini 6 litre water heater is ideal for any small VW Camper, motorhome or caravan. It runs off 12v/240volts and has a thermostatic mixer valve is fitted as standard for the safety of those on board and also increases the volume of water available.
Vanwurks water heaters are made of the finest quality materials, which guarantee the ultimate performance and reliability.
Using the water heater on 12v;
Hot water is produced when driving the vehicle from the 12-volt leisure/vehicle battery system. It can be used when the vehicle is stationary in order to top up the heat as water is used. However it should not be left on or used for longer than 30 minutes without recharging the leisure battery as the current draw is approximately 25 amps.
Using the water heater on 240v;
When you arrive at your destination, simply connect the heater to your 240v hook up system for continuous on board hot water.
Construction:
The boiler is made of 100% copper; this gives both performance and health benefits. Copper has excellent anti-bacterial qualities. On test, after seven days of immersion in water, 80% of stainless steel and plastics were coated in a bio film, while copper showed little to no bio film. Bio films are harbingers of E-coli 0157 and other micro biological organisms and pose a significant threat to human health.
Vanwurks water heater are completely assembled ready for quick and easy installation. Every heater is individually bench tested ensuring quality and reliability every time.

Last edited by OldWest; 08-06-2017 at 07:40 PM. Reason: Add info.
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Old 08-06-2017, 08:27 PM   #18
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Default Re: Mod Idea--Electric MiniTank Hot Water

Whale 3 gallon 12v water heater. May be too big to fit through door.

http://www.whalepumps.com/marine/pro...-Electric-Only
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Old 03-26-2019, 10:40 PM   #19
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Default Re: Mod Idea--Electric MiniTank Hot Water

Other 12v possibilities. These are much smaller capacities (original James Cook Truma boiler was 10 liters) and have relatively low wattages. These could use the leftover energy from solar panels. If Kerstner air conditioning has been removed, these could be hooked up using the 12v air conditioning cables from alternator. The smaller units might even fit behind mirror where the James Cook Truma boiler is located.

Australian

Aqueous 5 Liters, 12V, 180 Watts
Aqueous 6 Liters, 12V, 180 Watts
Duoette 10 Liters, 12V, 300 Watts

https://ausj.com.au/product-category/water-heaters/

European

Elgena KB3, 3 Liters, 12V, 200 Watts
Elgena KB6, 6 Liters, 12V, 200 Watts

Available in the USA through TotalComposites.com

https://totalcomposites.com/product-...ating-cooling/

VanWurks and others using C.A.K. Mini XT all copper tanks in 6 Liters and 10 Liters sizes, with combination 12V and 240V. Limited information available.

https://www.vanwurks.co.uk/product/w...th-mixer-valve

https://leisurelines.net/water-heating-30-c.asp

Last edited by OldWest; 03-26-2019 at 10:48 PM. Reason: Add links
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Old 03-28-2019, 11:44 PM   #20
OldWest
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Default Re: Mod Idea--Electric MiniTank Hot Water

The hot water heater plywood laminate compartment door opening with the Airstream installed GFCI outlet is about 11.25 inches wide and 19.25 inches tall (rounded corners).

The depth of the compartment is about 17 inches deep (less if include the GFCI outlet.on door).

The hot water.compartment space is larger than the compartment door opening (after removing the Kerstner air conditioning and Suburban hot water heater items.)

Some of the 12v water heaters should fit.
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