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atwood water heater install thermostat

When installing this add on feature (thermostat), where is it installed? Can I do this from outside the U270 (2004)? Or from inside through one of the cabinets? What tools were needed? And what electrical connections were made?
As for the new drain plug (on the Atwood water heater) I installed, made the transition from the  atwood's aluminum to galvanised pipe via heat resistant plastic coupler. Of course wrapping all with Teflon tape.
r.schwab
2004 U270 36'

Re: atwood water heater install thermostat

Reply #1 –
The thermostat is installed from the outside.  It's covered by a piece thin black foam (adhesive on one side) with just the spade terminals sticking through.  Both the ECO (Emergency Cut Off) and thermostat are under this foam and both parts look nearly identical.  The foam has printing on it that indicates which is which.  Remove the wires (2) and peel back (or tear off) the foam to get the the thermostat.  It held in with a metal ring and spring.  You have to manipulate both to get it free.  It's difficult to describe.  Installation is just the reverse but it is important to make sure that head of the thermostat is resting against the tank - that's what that spring is for.  It doesn't matter which terminal goes to which wire.  New thermostats typically come with a new foam piece. 
Hope this helps,
John Fitzgerald
1991 U300 (SAI) Side Aisle Island Bed 40'
Detroit 6V92 with Allison Retarder
Meridian (Boise), Idaho

Re: atwood water heater install thermostat

Reply #2 –
Quote from: r.schwab –
When installing this add on feature (thermostat), where is it installed?
When you work on the electrical components on an Atwood water heater, remove any source of power to the circuits. 120VAC can hurt or kill a person. If 12VDC is on, it is very easy to blow fuses.

I am puzzled regarding "add on feature (thermostat)." I thought the thermostat was an integral part of an Atwood water heater.

I recommend this document to help understand the Atwood water heaters. http://manuals.adventurerv.net/Atwood-Water-Heater-Service.pdf
J D Stevens
1997 U295 CAI 36' Build #5085
2002 Subaru Outback
Motorcade 16869
Bellville, TX

Re: atwood water heater install thermostat

Reply #3 –
Quote from: r.schwab –
When installing this add on feature (thermostat), where is it installed? Can I do this from outside the U270 (2004)? Or from inside through one of the cabinets? What tools were needed? And what electrical connections were made?
As for the new drain plug (on the Atwood water heater) I installed, made the transition from the  atwood's aluminum to galvanised pipe via heat resistant plastic coupler. Of course wrapping all with Teflon tape.

Are you talking about the Atwood 93105 adjustable thermostat, if so it will replace the pre set stat, the kit comes with complete instructions.
The selected media item is not currently available.Bill&Doris 97 U270 36'
University of Parris Island Class of 66
Semper Fi  Build# 5174 MC#17094

Re: atwood water heater install thermostat

Reply #4 –
And its about a 4 minute install... Really cuts down on the cycle times for the propane heat.
The selected media item is not currently available. Dave Head & Megan Westbrook
Titusville, FL - The Great Outdoors
'98 270 buying this month
Toad is a 2018 F150 XLT