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Old 10-02-2014, 11:25 PM   #1
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Hot Water Heater Question

Hello everyone, I winterized my TT today and when I went to drain the hot water heater, I was surprised that no water drained out of it. It appears empty! We just got back from our last camping trip of the season and used the water heater everyday with dishes, showers etc.

I was expecting it to be full since we haven't used it since we got back from our trip two weeks ago. Does this sound normal, and if so where did the water that was in it when we were camping go to???? This one has me stumped so any help would be great. Thanks!
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Old 10-03-2014, 05:21 AM   #2
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what were your steps?

maybe the plug was leaking

or sludge in tank but unlikely as it is so new

should have one of these




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Old 10-03-2014, 06:42 AM   #3
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Did you possibly open the pressure relief valve to drain it? Or did you remove the drain plug at the bottom?
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Old 10-03-2014, 08:10 AM   #4
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Old 10-03-2014, 09:16 AM   #5
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Even if you don't open the pressure relief valve, it should still gurgle out. It's REALLY slow, but it comes out. You could stick your finger into the drain hole (or some other "device") to see if there's something obstructing the drain. Obviously, make sure the WH is off and cooled down. It's not uncommon for construction debris to be found in holding tanks and what not, but it doesn't seem like anything big enough to block the drain could get into the WH... But you never know I guess...

Interesting issue, I wonder where the water went too...
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Old 10-03-2014, 10:29 AM   #6
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Thanks for the replies. I did check for obstruction when nothing came out and it appears its all clear. Laying awake last night trying to figure out the steps I took and where the water could have gone, it dawned on me, ( no pun intended) I drained the two Low Point drains that sit just to the right of the hot water heater before I pulled the hot water heater drain.

Would one of those drains, drain the hot water heater as well???
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Old 10-03-2014, 10:31 AM   #7
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Quote:
Originally Posted by WCT View Post
Thanks for the replies. I did check for obstruction when nothing came out and it appears its all clear. Laying awake last night trying to figure out the steps I took and where the water could have gone, it dawned on me, ( no pun intended) I drained the two Low Point drains that sit just to the right of the hot water heater before I pulled the hot water heater drain.

Would one of those drains, drain the hot water heater as well???
unlikely as the cold side should have a check valve so hot water doesn't bleed into the lines and the hot water output is at the top of the tank
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Old 10-03-2014, 11:00 AM   #8
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Quote:
Originally Posted by WCT View Post
Thanks for the replies. I did check for obstruction when nothing came out and it appears its all clear. Laying awake last night trying to figure out the steps I took and where the water could have gone, it dawned on me, ( no pun intended) I drained the two Low Point drains that sit just to the right of the hot water heater before I pulled the hot water heater drain.

Would one of those drains, drain the hot water heater as well???
Your low point drains should drain nearly all of the water out of your system - including the hot water tank.
- shut your water heater bypass valve
- open your water heater inlet and outlet valves.
- open both hot and cold low point drain valves.
- open all faucet valves, including outside shower (I remove the hose on mine)
- cycle the toliet valve to drain that line.

go inside and enjoy a cup of coffee while gravity does the work.
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Old 10-03-2014, 11:09 AM   #9
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Originally Posted by tjpolsin View Post
Your low point drains should drain nearly all of the water out of your system - including the hot water tank.
- shut your water heater bypass valve
- open your water heater inlet and outlet valves.
- open both hot and cold low point drain valves.
- open all faucet valves, including outside shower (I remove the hose on mine)
- cycle the toliet valve to drain that line.

go inside and enjoy a cup of coffee while gravity does the work.
I disagree as stated above
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Old 10-03-2014, 11:11 AM   #10
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Originally Posted by tjpolsin View Post
Your low point drains should drain nearly all of the water out of your system - including the hot water tank.
- shut your water heater bypass valve
- open your water heater inlet and outlet valves.
- open both hot and cold low point drain valves.
- open all faucet valves, including outside shower (I remove the hose on mine)
- cycle the toliet valve to drain that line.

go inside and enjoy a cup of coffee while gravity does the work.
That's how I drain my system. Because of where I live, I blow my system down with compressed air (vice antifreeze) to winterize it.

Blowdown involves:
- shut all faucets and low point drains.
- pressurize the system with 50# of compressed air (compressor or tire pump).
- open the water heater bypass valve. (allows compressed air from the water heater to blow the cold water lines).
- starting with the low point drains and working up, open one valve at a time until only air comes out.
- repressurize system to 50# as needed until all faucets and drains are just blowing air.

Tim
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