hot water tank tube fittings

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getakey

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I posted on another thread that I needed to replace switch and thermostat assembly on Atwood hot water heater due to corrosion/short.
Went to replace earlier today and only partly successful. Due to corrossion on heating element I was not able to reconnect wires. Debating on how to deal with that issue, but in the meantime I can replumb the tubing so that I get hot water from the second tank. (I have 2 tanks stacked and plumbed in serial.) Unfortunately, tank with problem is downstream of good tank and it would have to empty before getting hot wter from upstream tank. So, I am wanting to bypass the downstream tank. I tried disconnecting the tubing at the fittings, but did not come apart. Did not want to force and possibly break it until I understood if there is a "technique".
Hoping Vic is around!
 
I'm curious why 2 hotwater heaters more capacity, extended showers? What size is your current Atwood and the secondary? I have an Atwood it's about 6 seasons old and still going strong (knock on wood). I can't help with the fittings because mine isn't showing any signs of age yet and I haven't done anything but installed it in 2005 and waxed the cover to keep it clean and shiny.
Bill
 
there are 2x20 gallon tanks stacked. Its not a huge boat (Cruisers 4450, 45 ft), but it has a jacuzzi tub in Master. I think they wanted to ensure enough hot water for that.
 
Thats pretty cool I have a jacuzzi in my home the heater alone draws 40 amps at 220VAC. I wish I never made a workout/jacuzzi room in my current home. Now the jacuzzi sits empty with the cover on it. Far to expenive to run 12 months a year. Not as bad as my last house that had a 16X36 inground pool built into it. That room was over 2200 square feet alone. It was fun to swim while it was snowing outsideand our children (they were children at that time) really loved it. But lile the jacuzzi was far to expensive to use 24/7/365. Also both rooms required special construction and ventalization to keep them from being rain forest rooms.
Bill
 
thanks, but not PEX
It is clear (semi clear) plastic tubing, 5/8" I think
The fittings are white plastic. The male portion of the fitting goes into the tube (feels like it is barbed) and a collar screws over the top
 
The fittings I used were called Quest, think they have been upgraded and renamed. (PEX ?) They used O rings and a barbed rings.
 
No o rings on these fittings.
My question is: is it possible to get the tubing off the connector, or is this the situation to just cut tubing and replace.

From what I can tell searching web, its a "flared" fitting
 
I found more info
The fittings are "Flair-it". They are supposed to come apart by creating an angle between fitting and tubing.
Will try this week.
 
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