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Old 09-06-2016, 06:22 AM   #11
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Originally Posted by Herk7769 View Post
This is the "Two Valve" system. There is no check valve in a 2 valve system.

Thank you for a GREAT photo of a 2 valve winterizing setup.

To winterize:

Rotate the bottom valve to vertical so it is pointed up. Then close the outlet valve (rotate so the arm is pointing away from the Styrofoam body).

Then DRAIN (and NOT before you close those valves!) from the outside drain outlet. Draining the hot water heater using the low point drains will draw sediment and calcium/anode bits into your cold water pipes causing all kinds of headaches next spring.
Thanks Herk,

I read your post earlier in the day in the mod section about making sure to close the valves before you drain the water heater. That is what led me to look at my valve setup and ultimately this thread
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Old 09-06-2016, 06:32 AM   #12
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Your valves don't select ON-OFF, but instead, select the route the water will take. In one position, water goes straight through and into (or out of) the water heater, in the other position, water turns 90 degrees and goes down the tube that bypasses the water heater.

Look at the handle on the valve, thats the patch the water will take.

NOTE. HOW I WINTERIZE MY WATER HEATER

I place the water heater valves in bypass.

Drain the water heater, remove the drain plug and open the over pressure valve. Leave the drain plug removed and store it in a baggie or something inside the water heater compartment.

After I've pumped antifreeze through the rest of the plumbing, my final step is to momentary open one of the bypass valves on the water heater so a little antifreeze will go into the water heater.

This will prevent any water pockets from freezing and also acts as a preservative and anti corrosion agent inside the water heater.

(Note, I'm not filling the water heater with antifreeze, just a little in the bottom to displace the water
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Old 09-06-2016, 07:52 AM   #13
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The small amount of water in your WH won't hurt anything as it has lots of room to expand. Also, be aware that Suburban WHs have an anode attached to the drain plug.
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Old 09-06-2016, 07:54 AM   #14
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Quote:
Originally Posted by Herk7769 View Post
This is the "Two Valve" system. There is no check valve in a 2 valve system.

Thank you for a GREAT photo of a 2 valve winterizing setup.

To winterize:

Rotate the bottom valve to vertical so it is pointed up. Then close the outlet valve (rotate so the arm is pointing away from the Styrofoam body).

Then DRAIN (and NOT before you close those valves!) from the outside drain outlet. Draining the hot water heater using the low point drains will draw sediment and calcium/anode bits into your cold water pipes causing all kinds of headaches next spring.
Herk,

I forgot to ask. The box I have in the one picture. Is that a control box for the water heater? I'm assuming it shouldn't be lying in the floor?

Thanks again
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Old 09-06-2016, 08:02 AM   #15
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Originally Posted by kantonburg View Post
Herk,

I forgot to ask. The box I have in the one picture. Is that a control box for the water heater? I'm assuming it shouldn't be lying in the floor?

Thanks again
Correct, that is your 12 volt DC module board. It can kinda be anywhere you like it for ease of access.

Let me find you some pics.



Edit: Here are the instructions from the Suburban installation manual concerning the module board
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Old 09-06-2016, 09:39 AM   #16
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Correct, that is your 12 volt DC module board. It can kinda be anywhere you like it for ease of access.

Let me find you some pics.



Edit: Here are the instructions from the Suburban installation manual concerning the module board
Well aside moisture it sounds like it's not mounted properly

I'll fix that soon.

I'll also need to do something about that flimsy wall partition that is supposed to protect the water heater from anything in storage. Not sure what I'm going to do about that yet.
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Old 09-06-2016, 03:44 PM   #17
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Here's a functional diagram of how the three way valves work. As said, on some systems they have a check (one way) valve in the hot water outlet to stop the water from backing into the tank instead of the second valve .

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Old 09-06-2016, 05:57 PM   #18
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Here's a functional diagram of how the three way valves work. As said, on some systems they have a check (one way) valve in the hot water outlet to stop the water from backing into the tank instead of the second valve .

Thanks for the diagram. My hot water line has a regular valve but I can see where a check valve would work there too.

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