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Old 06-07-2012, 06:13 PM   #1
2 Rivet Member
1983 31' Airstream310
Brighton , sussex
Join Date: Oct 2011
Posts: 80
Water heater/ heater matrix repair

Last one I promise.......As I have joined the heater take off togerth can i still use the Atwood water heater? There are two pipes teed off the dashboard heater pipes which run all the way back to the Atwood water heater. This is the motor assist option. When I fill the fresh water tank and use the heater is the a danger of the water coming out of the disconnected ends in the engine bay? Will I loose all of the water in the water heater? I mean can I actually use it in this state? I plan to oul the heater core out and get a new one made.


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Old 06-07-2012, 07:20 PM   #2
Rivet Master
1974 Argosy 20
2014 20' Flying Cloud
Kooskia , Idaho
Join Date: Jul 2009
Posts: 4,592
You can use the heater without any problems. The engine assist is a coil of pipe around the tank in the heater, on the outside. It is in no way connected to the water inside. This is a code and safety issue. You would never want the engine coolant to mix with the domestic water.

You can leave it disconnected and even buy a replacement water heater without the feature if you would like. Those water heaters with the engine assist are more expensive and a whole less available than the normal ones. I do like the extra coach cabin heater under the seat, which operates from the same lines as the water heater. BTW, that heater will eventually need to be re-cored. When I had mine done it was a stock variety that my radiator repair shop found in a catalog, but I have no idea if it is still available and if you could locate one in England.

(ex '83, 310 owner)

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Old 06-08-2012, 06:00 AM   #3
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1984 34.5' Airstream 345
Foothill Ranch , California
Join Date: Mar 2010
Posts: 3,374
Images: 1
If you have to get into the Aux heater, read this... been there done that!
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