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Old 12-29-2020, 08:32 AM   #1
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No bypass valve

I have a 2018 Rockwood 2509 TT I just bought. I went to winterize it and noticed there was only 2 valves on the back side of the water heater. 1 cold 1 hot. No bypass. How do you winterize without a bypass vavle.
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Old 12-29-2020, 08:40 AM   #2
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I have a 2018 Rockwood 2509 TT I just bought. I went to winterize it and noticed there was only 2 valves on the back side of the water heater. 1 cold 1 hot. No bypass. How do you winterize without a bypass vavle.

You have a bypass capability even with 2 valves assuming at least one of them is a 3-way valve. Click that 4 right down there ==> to see what I assume to be your set-up. #4
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Old 12-29-2020, 08:41 AM   #3
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Can you post a picture of the valve arrangement?
As Mr Dan said, A lot of systems use a 3-way valve on one of the valves so you don't need three valves to bypass the water heater.
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Old 12-29-2020, 08:51 AM   #4
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My wildwood has two valves (neither is 3 way). I can bypass the water heater.

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Old 12-29-2020, 08:58 AM   #5
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If it looks like the one below, simply turn each valve handle to point toward the short bypass line.
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Old 12-29-2020, 09:58 AM   #6
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Same situation

Ď21 26DBH

How can I really bypass the water heater when you have to go thru it to get to the hot line side

Note: I am a newbie and of a plumber
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Old 12-29-2020, 10:34 AM   #7
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Thanks Mr Dan my tank is like the 1 in pic #4. Not sure how this bypasses the tank with valves in line with the gray line but I will give it a try. Thanks
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Old 12-29-2020, 10:40 AM   #8
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Thanks Mr Dan my tank is like the 1 in pic #4. Not sure how this bypasses the tank with valves in line with the gray line but I will give it a try. Thanks
Setting those valves 'correctly' forces the water through the gray loop instead of through the water heater. "Water Heater Bypass"
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Old 12-29-2020, 10:41 AM   #9
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Quote:
Originally Posted by lizARdman15 View Post
Same situation

Ď21 26DBH

How can I really bypass the water heater when you have to go thru it to get to the hot line side

Note: I am a newbie and of a plumber
Setting those valves 'correctly' forces the water through the blue loop on the right instead of through the water heater. "Water Heater Bypass"



You are "of a plumber"?
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Old 12-29-2020, 10:51 AM   #10
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Thank you again for your help
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Old 12-29-2020, 03:12 PM   #11
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Setting those valves 'correctly' forces the water through the blue loop on the right instead of through the water heater. "Water Heater Bypass"



You are "of a plumber"?
Although we are all here via plumbing(pipe laying), my iPhone autocorrected me from ďnotĒ to what you read.

What is the correct way to turn them?

By the time I crawl my big ole self all the way across the storage space with a flashlight and bifocals, I canít see squat.

Forest riverís online manual is about worthless and I have crappy internet and cell service to watch one of their how to videos.

Every tutorial I have to JD has had the 3 valve system
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Old 12-29-2020, 03:25 PM   #12
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Thumbs up

Here's how those two three way valve bypasses work.
The left drawing is normal setting, and the right is in bypass.

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Name:	RV Water Heater 2 Valve Bypass.jpg
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Here's also a cutaway of the valve. The circle with the "T" part is the plug and it's what turns.

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Name:	3-Way Valve Cross Section.jpg
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Old 12-29-2020, 06:24 PM   #13
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Bama, does the valve in your schematic only turn 90 degrees?

Both the top and bottom valves only turn 90.

If I see it correctly, in the open position, it looks to allow water to both go thru the valve and into/out of the HW tank. In the closed, it lets water go thru the pipe but not into the tank.
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Old 12-29-2020, 06:49 PM   #14
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Originally Posted by lizARdman15 View Post
Bama, does the valve in your schematic only turn 90 degrees?

Both the top and bottom valves only turn 90.

If I see it correctly, in the open position, it looks to allow water to both go thru the valve and into/out of the HW tank. In the closed, it lets water go thru the pipe but not into the tank.
Correct on all accounts.
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Old 12-29-2020, 06:52 PM   #15
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That is correct. There are stops on the valve that allow them to only turn 90ļ.

Yes, in the normal position water makes a 90ļ turn through the valve and in the bypass position it goes straight through the valve, but is blocked from going into or out of the heater by the back side of the plug. The cutaway shown would turn CCW (Counter clock wise) for bypass position.
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Old 12-29-2020, 07:28 PM   #16
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Ok, so it is stupidly simple!!!

Must be my Germanic roots from centuries ago that want to make things more difficult than it has to be.

I will turn the valves and hook up to my air compressor to see if I get anything else out of the lines.

I bet that the air going thru the tank was what was making the humming sound.

Check this box for RV knowledge off my list!!
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Old 12-29-2020, 10:15 PM   #17
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If you are are using an air compressor to blow water out of your water lines, make sure that you don't use high pressure. You can break things easily. I cut my pressure to 40 psi and it blows out the water very quickly. Just trying to save you some headaches.
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