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04-30-2008, 01:30 PM
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#1
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Senior Member
Join Date: Feb 2008
Location: Minnesota
Posts: 211
SUN #527
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Hot Water Heater Bypass
I got my 1988 Sunny this winter and the only thing I have left to test is the Hot Water Heater. It is currently bypassed, so I am not optimistic that it works, even though I was told it does.
It was bypassed by removing the input and output hoses and threading them together with a piece of threaded pipe. My question is should I just reconnect them to the tank or is it worth it for me to create a bypass system with valves etc. It doesn't seem like I would really ever want to bypass it but I see that newer h20 heaters come that way on newer models, but I'm not sure why exactly. Perhaps for winterizing purposes?
Let me know what you think!
Thanks!
__________________
__________________
1988 Saturn T-1550 (sold 6/10)
2004 Solaris T-1950 (sold 5/14)
2007 Solaris T-276SR (sold 3/20)
2020 Forest River - No Boundaries 19.8
2013 Toyota Tundra Crewmax (sold 7/21)
2021 Ford F-250 CrewCab
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04-30-2008, 01:46 PM
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#2
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Moderator
Join Date: Nov 2006
Location: New York
Posts: 1,920
SUN #98
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ScottK,
I would put bypass values in. Living in Minnesota it will come in handy when winterizing the trailer.
When you winterize the trailer next year, blow the water lines out, without the hot water tank bypassed. This will get all the water out of the HW tank. Then bypass the HW tank and add antifreeze. This way you’re not filling up your HW tank with antifreeze. Plus if your HW Tank has an anode rod, antifreeze will prematurely corrode the anode rod.
Hope this helps.
Hutch
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__________________
Mary & Tom (aka Hutch)
2015 Jayco Eagle Premier 361REQS
2014 GMC Sierra 3500HD 4x4 CC D/A
Sunlines: 2005 Solaris T-280SR; 1999 Solaris T-2670; 1998 Saturn T-24A
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05-01-2008, 09:20 AM
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#3
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Senior Member
Join Date: Feb 2008
Location: Minnesota
Posts: 211
SUN #527
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Thanks Hutch. That will be easy enough to do. Do I need to have check valves or anything other than 4 valves in a bypass configuration?
__________________
1988 Saturn T-1550 (sold 6/10)
2004 Solaris T-1950 (sold 5/14)
2007 Solaris T-276SR (sold 3/20)
2020 Forest River - No Boundaries 19.8
2013 Toyota Tundra Crewmax (sold 7/21)
2021 Ford F-250 CrewCab
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05-01-2008, 09:33 AM
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#4
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Senior Member
Join Date: Feb 2008
Location: Minnesota
Posts: 211
SUN #527
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Now I just found this picture in another post. I was under the impression that I will need 2 bypass setups. The pictured tank only has one, which seems simpler. My HWH is set up differently with a Tee at each both tank connection. I guess I need to look closer at where these lines go. I can post a picture of mine, tonight, if needed.
Also, my tank doesn't have any insulation. Can this be purchased or should I just make my own little HWH blanket?
__________________
1988 Saturn T-1550 (sold 6/10)
2004 Solaris T-1950 (sold 5/14)
2007 Solaris T-276SR (sold 3/20)
2020 Forest River - No Boundaries 19.8
2013 Toyota Tundra Crewmax (sold 7/21)
2021 Ford F-250 CrewCab
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05-01-2008, 01:55 PM
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#5
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Moderator
Join Date: Nov 2006
Location: New York
Posts: 1,920
SUN #98
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ScottK
The picture you posted is a perfect model to follow. The older Sunlines had 2 valves, one at the top and one at the bottom of the bypass pipe. The picture looks like it’s from a newer Sunline model that has only 1 bypass valve. I’m not sure on how specifically the single bypass valve works. If I were doing what you’re planning on doing, I would go the simple way with 2 bypass valves. Then set each valve so they direct water through the bypass pipe for winterizing or set each to direct water flow into / out of the HW Tank for camping.
Wrt HW Tank insulation, I’m not sure if you can purchase that, Sunline Fan should know. However, I’m sure someone here can provide you suggestions on a do-it-yourself method for insulating the HW Tank
Hutch
__________________
Mary & Tom (aka Hutch)
2015 Jayco Eagle Premier 361REQS
2014 GMC Sierra 3500HD 4x4 CC D/A
Sunlines: 2005 Solaris T-280SR; 1999 Solaris T-2670; 1998 Saturn T-24A
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05-01-2008, 03:38 PM
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#6
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Senior Member
Join Date: Mar 2008
Posts: 351
SUN #549
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Quote:
Originally Posted by PTHutch
ScottK
The picture you posted is a perfect model to follow. The older Sunlines had 2 valves, one at the top and one at the bottom of the bypass pipe. The picture looks like it’s from a newer Sunline model that has only 1 bypass valve. I’m not sure on how specifically the single bypass valve works.
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With the single valve setup, a check valve (backflow preventer, one-way valve - lots of names) is installed on the HOT side of the heater. This allows liquid to only flow OUT of that connection, thereby stopping antifreeze from making it's way into the heater.
- Frank
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05-01-2008, 09:56 PM
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#7
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Moderator
Join Date: Nov 2006
Location: Ohio
Posts: 12,658
SUN #89
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Scott
That pic is off my 2004 T2499 camper. Glad it helped
If you are buying parts, I would buy qty 2, 3 ways bypass valves. Yes Mine has the check as was described in the top line but it also leaks antifreeze into the HW heater until it would set the check. About 1 quart leaks in.
The check works and is cheaper, but for the money I would by the 2 valves.
Good luck.
John
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Current Sunlines: 2004 T310SR, 2004 T1950, 2004 T2475, 2007 T2499, 2004 T317SR
Prior Sunlines: 2004 T2499 - Fern Blue
2005 Ford F350 Lariat, 6.8L V10 W/ 4.10 rear axle, CC, Short Bed, SRW. Reese HP trunnion bar hitch W/ HP DC
Google Custom Search For Sunline Owners Club
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05-07-2008, 06:28 AM
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#8
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Senior Member
Join Date: Feb 2008
Location: Minnesota
Posts: 211
SUN #527
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Thanks for the tips everyone. I came across a bypass kit like this at my local rv dealer for $20. It worked great...until...
http://www.rvsurplussalvage.com/cata...product_id=671
...my HWH started leaking from the tank. That was the last appliance to test since buying the camper in late winter - everything else worked. I found an exact new replacement on eBay for $200 shipped. Local dealer wanted $350!
I also had a bad valve in the toilet, but I guess these things are to be expected in a 20 year old camper! The valve was a fairly easy $25 fix. I was surprised to find a part for a 20 year old toilet! At least I know what I have now and can maintain things to last.
Thanks!
__________________
__________________
1988 Saturn T-1550 (sold 6/10)
2004 Solaris T-1950 (sold 5/14)
2007 Solaris T-276SR (sold 3/20)
2020 Forest River - No Boundaries 19.8
2013 Toyota Tundra Crewmax (sold 7/21)
2021 Ford F-250 CrewCab
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