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Old 10-06-2014, 11:31 AM   #1
Flyboy446
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Hot Water Heater Bypass - 2014 Cougar 28RBS TT

I am trying to locate the hot water heater bypass valve on my new 2014 Cougar 28RBS travel trailer. Any help is appreciated.
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Old 10-06-2014, 12:34 PM   #2
chuckster57
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It should be in-line at the back of the water heater. Depending on how it's configured there may be a single valve or up to three.
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Old 10-06-2014, 06:31 PM   #3
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Generally you just remove the panel inside where the tank is located. Probably need a square head screw driver. If you are not sure look outside for it to figure out if it is under the stove, the fridge, maybe a bed or bunk. Once you remove the panel you will see the pipes going to and from the tank. Good luck.
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Old 10-06-2014, 10:06 PM   #4
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Working On Locating It

Thanks for the input, I am headed out to the trailer tomorrow to get started on pre-trip prep and will be working to find the HW tank and the by-pass valve. Need to sanitize the FW system as the rig has been sitting for a few months.

I will follow up with my findings.


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Old 10-07-2014, 04:03 PM   #5
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Post Final Follow-Up with Pictures for Inquiring Minds

Here is my follow up with narrative and pictures. Hope this helps anyone else out there looking for these items.

Locating the Hot Water Heater (HW) by-pass valve on a 2014 Keystone Cougar 28RBS Travel Trailer.

1. Locate your hot water heater exterior combustion chamber. This is where the gas heats up your HWH and exhausts it outside the trailer. It looks like this on my rig.



2. Open the panel to see the burner, igniter, HWH relief valve (top) and verify drain plug (below gold burner tube).



3. Close up view of burner tube, HWH drain plug on the right and exterior electrical shut-off switch on the left.



4. Ok so now that we know where the HWH Drain Plug is, we can go inside the trailer and locate where the access panel is to the HWH and hopefully the HWH by-pass valve.

On my trailer it was easy to see that an access panel was located next to the refrigerator which was approximately the location inside, where the HWH drain plug was found on the outside of the trailer. The two screws on the access panel also helped point the away. 



5. Unscrew the screws and gently pull the panel away to reveal the HWH and plumbing.



6. Upon closer inspection I could see that Keystone factory had indeed installed a By-Pass Valve for the HWH. The valve as shown is in the normal operating position, not in By-Pass mode.



7. I talked to the Service Manager at the Keystone Dealer where I purchased this trailer regarding the potential need to install another valve up at the top, between the HWH and the the By-Pass tubing to completely isolate the HWH from any potential liquid, such as antifreeze, from getting back into the tank through the hot water line when the valve is in By-Pass mode and he stated that it was not possible. He said that all modern RV hot water heaters have been designed with a one-way valve on the hot water side so there is no chance of antifreeze getting into the HWH through that path.


So now I am ready to sanitize the Fresh Water (FW) system of my trailer and in a month or so Winterize the system. Hope this helps those out there with inquiring minds.


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Old 10-12-2014, 04:40 PM   #6
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Unfortunately with the single valve bypass with the one way valve, you get the spray of cold water while taking a Navy shower. I hated it. So I replaced the crappy one way valve and single bypass valve with 3 Sharkbite shutoff valves. Now I can take a nice warm shower without the shot of cold water when you turn the shower head back on.
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Old 10-17-2014, 07:36 AM   #7
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Quote:
Originally Posted by Sherwood View Post
Unfortunately with the single valve bypass with the one way valve, you get the spray of cold water while taking a Navy shower. I hated it. So I replaced the crappy one way valve and single bypass valve with 3 Sharkbite shutoff valves. Now I can take a nice warm shower without the shot of cold water when you turn the shower head back on.
Is that the cause of it? Huh!
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Old 10-17-2014, 08:21 AM   #8
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Yeah. The one way valve pretty much shuts off the hot water while its trickling during a Navy shower thus getting the cold water treatment. Taking that out and installing the 3 quarter turn valves fixes that.
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Old 10-17-2014, 08:22 AM   #9
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Oh, and welcome to the forum!
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Old 10-17-2014, 09:12 AM   #10
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Good Info - Thanks.

Thanks so much for the good info.

Ya I hate that initial cold blast of water during the shower. I think I will be adding in the SharkBite valves to my rig for this same reason.
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Old 10-17-2014, 12:26 PM   #11
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thanks from myself and DW

Great tip!!!
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