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Old 10-15-2015, 02:40 PM   #1
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2016 25' Flying Cloud
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Water heater bypass

Haven't even looked yet, but maybe someone can save me time and much cursing. 2015 rear twin FC 25'...where is the hotwater bypass located in this baby? Seems like every model year is different. Winterizing right around the corner. Appreciate the tip. regards/steve
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Old 10-15-2015, 08:16 PM   #2
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Welcome sandrade. Congratulations on your 2015 Airstream. There are a lot of people who own the Flying Cloud 25 in it's many configurations.

I'm surprised your owner's manual doesn't point you to the bypass circuit and valves. But none the less, I'm sure someone with a similar model will reveal the location for you.

Yep, winterizing is coming up. I need to get mine done also.

David
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Old 10-16-2015, 06:27 PM   #3
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My 13 has only one valve to turn,,,
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Old 10-16-2015, 06:43 PM   #4
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We have a 2012 FC rear queen bed and I suspect the setup is the same. It's one valve located under the foot of your streetside twin bed, there is an interior access door and it is inboard toward the center of the trailer, in front of the water heater.

I've only used it once, since then we have been snowbirding south before freeze up. With the exception of tonight, we are enroute visiting my son's family farm in Minnesota, 25 degrees forecast tonight. I drained the low point water lines and tanks, and will use the furnace to get us through.
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Old 10-16-2015, 07:25 PM   #5
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Just looked again, the bypass valve has a yellow T-shaped handle on a water line going into the water heater, hard to miss. The handle is turned parallel to the water line for normal operation, perpendicular to the water line for bypass.
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Old 10-17-2015, 05:25 PM   #6
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Interesting to read how far Airstream plumbing has progressed compared to my oldies but goodies. My system needs three valves to bypass the water heater. All of the valves are hard to get to.

I wonder what the plumbing circuit or valve design looks like with just one easy to access valve to bypass the water heater?

I'll have to "google it!"

David
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Old 10-17-2015, 06:04 PM   #7
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Simple; they put a check valve on the hot water side of the water heater and a three way valve in the cold water line. When in bypass mode the check valve prevents the anti freeze from going back into the WH. A$ is not the only coach to use this method.


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Old 10-18-2015, 06:59 AM   #8
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Thanks TG Twinkie. Now I understand how it is done.

David
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