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Open Roads Forum  >  Truck Campers

 > Antifreeze NOT Bypassing Water Heater

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Mike Tassinari

Peabody Mass..

Senior Member

Joined: 02/27/2003

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Good Sam RV Club Member


Posted: 11/19/21 06:02pm Link  |  Quote  |  Print  |  Notify Moderator

Evening Dan.

So here is what is happening.
If I read your post correctly,
1- You have the by/pass valve open that switches the water pump suction side from its normal operation of taking water from your fresh water tank, and now suction anti-freeze thru a hose stuck in a bottle of Anti-Freeze
2 - You have the second by/pass valve close to stop anti/freeze from entering the cold water inlet side of your water heater, and when in that position allows anti/freeze to enter the hot water piping of your R/V
3 - What most people do not know, is what the heck is stopping the anti/freeze from entering the hot water outlet in your water heater

That because to save money - instead of putting a third valve to stop the anti/freeze from entering the hot water outlet of your water heater--------There is a check valve and I am guessing your check valve is junk and letting anti/freeze into the water heater via the hot water outlet pipe.

FYI - Looking at that outlet nipple that threaded into the hot water side of your water heater - it looks just like a 2" or so nipple - NOPE, there is a check valve inside that puppy.
Lastly go with a brass check valve instead of the plastic one.

Mike Tassinari


2002 Ford-4x4-Extended Cab-Dually-Lariet-Powerstroke Diesel--4.10 gears--Ranchero Adjustable Shocks-55 Gallon Extended Fuel Tank--4 Extra Main Leaf Springs-1 Extra Helper Spring..Independant Second Altinator(100AMP)to Charge MY Twin 275 AH. Deep Cycle Battery Bank tucked under the truck bed....

2001 Lance-11&1/2 Ft.-Model 1121/slide/out with all the Toys&2000 Watt Inverter

stevenal

Newport, OR, USA

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Joined: 03/16/2004

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Posted: 11/19/21 07:42pm Link  |  Quote  |  Print  |  Notify Moderator

My camper has a two way and a three way valve to route around the WH. I found the three way was installed backward from the factory. I turned it around, and all works as it should now.


'18 Bigfoot 1500
Torklifts and Fastguns
'17 F350 Powerstroke Supercab SRW LB 4X4

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