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Old 09-20-2011, 06:39 PM   #1
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Location: New England
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No bypass

Noticed my water heater only has one valve on the cold water intake side.
there is a cross over hose that goes up to the hot water exit -but no valve on the exit side.. Seems antifreeze would flow into the top of the tank when winterizing.
Any imput would be appreciated.

Rich + Lori -2006 salem 27BHSS/2004 Avalanche
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Old 09-20-2011, 10:33 PM   #2
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Location: Winston-Salem, NC
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If you only have one valve on the bottom of the water heater, (cold water inlet pipe). then you should have a check valve on the outlet that will only let water out. If the valve handle is "In Line" with the cold inlet, then you are in summer mode, all normal. When you turn the handle to line it up straight, the you have closed the water heater inlt, and opened the bypass portion of the valve. As long as the check valve is working on the outlet of the water heater, no problems.

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Old 09-21-2011, 07:04 AM   #3
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Location: Louisville, KY
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My previous trailer had only one valve on the HWH.
It also had a crossover pipe as yours does.

I switched the valve (then drained the HWH tank)
and pumped in pink antifreeze via the on-board water pump each fall.
It never froze and cracked anything so I guess it worked!

You must have the same setup.

You can test it by switching the valve to the other (bypass) position
then drain the HWH tank and then either turn on your water pump
or connect to a city water hose and see if you get water into your
HWH tank. If you don't, you're golden!!

My main issue with the one valve setup was it wasn't obvious which
way it needed to be turned for normal vs bypass.
I had to write myself a note and attach to the valve to remind myself
whether it was in bypass or not.

Good Luck!
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Old 09-21-2011, 08:42 AM   #4
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HowTo Winterize an RV The Basics

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