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Old 05-29-2017, 05:26 PM   #57
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Kings Park , New York
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Had to do the valve on and off in my BC on our first night out. Thank goodness for this thread.

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Old 10-08-2017, 02:17 PM   #58
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Superior , Colorado
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Originally Posted by YardDog View Post
Working with Airstream now on troubleshooting my system. I was provided an updated plumbing drawing, I figured I would share so others can see how the bypass valve is tied into the system.
Hi YardDog. I'm trying to winterize my Basecamp and I'm unsure as to where the Truma bypass valve is located. I'm looking at the schematic you provided, and "#7 Truma Bypass Valve" is named, but there's nothing labeled with a 7 on the schematic picture itself! Do you (or anyone else) know which one is the Truma bypass on the picture? Thanks.

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Old 10-09-2017, 07:08 PM   #59
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If you look in the middle of the drawing you will see an unlabeled valve in what appears as a square loop connecting the white line to the red or cold water to hot water line. That would be the one. Keep in mind though, some of the first models did not have this bypass. This is reflected in the first drawing I posted. My BaseCamp was delivered without the bypass valve so don't be surprised if its not there. I spoke with an engineer from Airstream who was on the phone with a Truma engineer and their words were its not needed. Hope this helps.
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Old 11-16-2017, 05:17 PM   #60
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Chandler , Arizona
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Thumbs up Thanks for the answer!!

We just picked up our 2018 BC and we had that hot water issue. I went in and found that valve and behold! Wonderful hot water! Thank you SO much!
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Old 02-03-2018, 01:01 PM   #61
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Las Cruces , New Mexico
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Smile Big Thank You! Your post was super!

Originally Posted by AT34 View Post
Yes, you were right, there was another valve in play. Patrick at Colonial Airstream helped us out.

The by pass valve (number 7 in the picture) was open when we picked up the B.C. We closed it after reading the thread. This does appear to be a valve that should be open during winterizing, but closed during normal use, or only cold water flows. We closed it, but then there was no water from hot faucet.

We then opened the valve labeled 8 in the attached picture. And hot water flowed like a dream! This valve is near the back under the triangle shaped cover in the seat next to the furnance.

Thanks everyone. I hope this helps.

Also, we only had the BC for one night..
We referred to your pictures, plumbing schematic & description to solve our problem of minimal hot water during our first trial trip. Back home now & after fix we have plenty of very hot water. Thanks so much!

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Old 03-27-2018, 07:55 AM   #62
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how much hot water

How much hot water can one expect from the unit? I have all of the valves set properly but tried a long shower as a test and did run out of hot water.

Is the unit like an on demand heater with unlimited hot water or is there an actual hot water tank that wil empty then need to be reheated.

Thanks for all of the good answers and questions
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Old 03-27-2018, 10:56 PM   #63
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My experience has been about 2 minutes of continuous hot water at full throttle on the handheld, 3 minutes if I throttle back 50% on the handheld flow valve.
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Old 03-27-2018, 10:57 PM   #64
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(Thatís based on a 2.5 gallon capacity of the tank)

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