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Subject:Re: Truma heater, like propex, for cheap but...
From:Alistair Bell
Date:Mon, 21 Jul 2014 19:40:53 -0700

http://www.amazon.com/Converter-Regulator-12v-Step-24v/dp/B0085T97PW

There

Alistair

> On Jul 21, 2014, at 7:40 PM, Rocket J Squirrel <camping.elliott@gmail.com> wrote:
> 
> Show me one.
> 
> -- 
> Jack "Rocket j Squirrel" Elliott
> 1984 Westfalia, auto trans,
> Bend, Ore.
> 
>> On 07/21/2014 07:39 PM, Alistair Bell wrote:
>> Just stick in a 12v to 24 v converter.
>> 
>> Alistair
>> 
>> 
>> 
>>> On Jul 21, 2014, at 7:37 PM, Rocket J Squirrel <camping.elliott@gmail.com> wrote:
>>> 
>>> There are plenty mornings while camping that I wake up in my Westy and see the thermometer in the teens (F), but I've always been able to warm up with a combination of hot tea, a nice sweater, and my Mr. Heater Buddy.
>>> 
>>> I'm sure that having a nice furnace to blow hot air into the cabin would be swell, and the price of this unit is attractive.
>>> 
>>> But the 24V thing is a dealbreaker for me. I have two 6-volt golf cart batteries under the bench seat, giving me something like 100 amp-hours at 12 volts. I am not going to put in another 12V battery (or two more 6V batteries) to bump me up to 24V.
>>> 
>>> Plus there's the charging. The alternator in the van is set for 12V batteries. As is my solar rig, and my at-home charger.
>>> 
>>> Charging a 24-volt setup can be done, but it would require some switching to put the supplemental (furnace) battery in parallel with the other batteries so a 12V charging source could do it.
>>> 
>>> So -- put a couple 12V batteries in series (stacked) to operate the furnace; then put them in parallel (side by side) for charging.
>>> 
>>> Unless the blower motor in the furnace can be swapped out for a 12V motor, and the circuit board can be made to be happy with the lower voltage, and control units can be found that work at 12V.
>>> 
>>> --
>>> Jack "Rocket j Squirrel" Elliott
>>> 1984 Westfalia, auto trans,
>>> Bend, Ore.
>>> 
>>>> On 07/21/2014 07:08 PM, Alistair Bell wrote:
>>>> Man that's a good deal. I'd jump on it of they shipped to Canada. I kick myself for not grabbing an older truma from a vanagon in the scrapyard some years ago.
>>>> 
>>>> Alistair
>>>> 
>>>> 
>>>> 
>>>>> On Jul 21, 2014, at 3:46 PM, Edward Maglott <emaglott3@GMAIL.COM> wrote:
>>>>> 
>>>>> Hey I picked up one of
>>>>> these:
>>>>> http://www.ebay.com/itm/Truma-HEIZG-E24-24V-30-OBT-Propane-Heater-Kit-Bus-Boat-RV-/251564290213?pt=Boat_Parts_Accessories_Gear&hash=item3a926670a5&vxp=mtr
>>>>> 
>>>>> or:  http://goo.gl/BXLVQ4
>>>>> 
>>>>> I offered $50 and it was accepted immediately.  There are 2 left as of now.
>>>>> 
>>>>> It does appear to be brand new stock in it's original box with
>>>>> multilingual original manual.  The biggest but is that it is 24V.  So
>>>>> you will need to do some electrical contortions to power the device
>>>>> if you want to put it in your Vanagon.  It states electric draw of
>>>>> .4A on low and .7A on high.  Also, there is no control device.  The
>>>>> manual shows 2 different basic controls and mentions a bunch of
>>>>> others that can operate it.  The circuit board has empty connectors
>>>>> that  they plug into.  I need to find or figure out the pin outs for
>>>>> these before I can test it.  It seems to be capable of low and high
>>>>> heat output and fan only.  There is no exhaust pipe included.  So if
>>>>> any of you are up to a challenge this might be a good opportunity.
>>>>> Edward