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Old 05-04-2014, 07:11 AM   #1
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Water Heater Bypass.. 2008 Designer 35RLSA

Kind of stuck, and could use some advice/information from you good people. We traded in our older fiver late last year for a 2008 Designer, 35RLSA. While I have always winterized my own rigs, this time I let the dealer do it as it came with the deal. So yesterday was the day (finally) to un-winterize (can I hear ya' say "Hallelujah"!) Anyway, search as I could, I could not find any water heater bypass valves. The utility center has no description for any of the five or six valves there, and the plumbing, pump, and hot water heater are all hidden and inaccessible without pulling out panels. Is there a water heater bypass on this rig (the manual implies that there is), and if 'yes', where the heck is it? Any ideas or information would be greatly appreciated.
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Old 05-04-2014, 07:24 AM   #2
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Get a online drawing of the utility panel valves. That is where it happens. Someone must have removed the combination key. It may be like mine if you can't get it.
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Old 05-04-2014, 07:33 AM   #3
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Quote:
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Get a online drawing of the utility panel valves. That is where it happens. Someone must have removed the combination key. It may be like mine if you can't get it.
I've been searching for just that, but can't find a drawing anywhere. May not be using the correct search terms, though. Can you point me in the right direction? Would much appreciate it.
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Old 05-04-2014, 08:05 AM   #4
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So here's another bit of information gained this morning. On another forum, a fellow advised that on his Designer, he needed to pull a small panel adjacent to the utility center to access the HWH bypass valve(s). If true, I'd not be wild about the idea of having to crawl into the basement, especially since I recently installed a reel for the 50 amp 'anaconda' cord that I'd have to work around. Anyone have any thoughts on this tidbit?
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Old 05-04-2014, 09:08 AM   #5
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Go to Jayco.com and you can download a owners manual for your year. In section 7 they have a label of the valve positions for bypass ect.
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Old 05-04-2014, 09:51 AM   #6
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Go to Jayco.com and you can download a owners manual for your year. In section 7 they have a label of the valve positions for bypass ect.
Out of curiosity I looked at this manual. As is typically with these owners manuals it describes the obvious but gives no indication whatsoever as to where anything is located. That is what Itching2go wants to know.
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Old 05-04-2014, 01:15 PM   #7
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Yep. The manual does say to turn the bypass valve, but gives no indication as to where it's at.

So, I just got back from the rig, and here's an update, now with a different problem.

Got into the basement and found the panel that I heard about on the 'other' forum. Got it off and sure enough, there was the elusive bypass valve which, as expected was not turned, meaning it hadn't been bypassed when the dealer put in the pink stuff. Purged the tank (again) to get as much of it out as possible, refilled it, and fired it up on propane. (No AC available at that point.) This is an Atwood heater, by the way. Had a Suburban in my old rig, so Atwood is new to me.

Must have taken a half-hour for the burner to light, but eventually it did with no intervention on my part. Waited a good half hour to an hour until it shut off, then ran the hot water at the kitchen sink. While the water got warm, it never did get hot. Same for the shower and bathroom sink Must have run it for a half-hour before the heater fired up again. So, with all that, I'm thinking I have either a faulty thermostat, or the mixer on the back of the heater is adding too much cold to not enough hot.

Has anyone else run into this and have some ideas to share? I'll take all the advice I can get.

Thanks..
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Old 05-04-2014, 01:19 PM   #8
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...and in case you're wondering, the water heater bypass is NOT one of the valves on the utility center. It's behind a small panel that is adjacent to the utility center that is held on by two screws. No label, so no indication that there's something behind it that one needs to care about.
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Old 05-04-2014, 01:22 PM   #9
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There is no mixer. The middle valve on mine bypasses the heater. (See 3 valves on right)
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Old 05-04-2014, 02:31 PM   #10
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Did you leave the bypass valve turned on (center valve in image below)? If so it will mix cold water with hot and the water will never get very hot. Here are the normal and bypassed valve illustrations.


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