Where are the water heater inlet and outlet valves?

[budh9534]

2002 Fleetwood Jamboree 29V

Bypass valve is under the kitchen sink for the water heater. But unlike the very easy to see YouTube videos on winterizing where the water heater inlet and outlet valves are in plain view near the bypass valve, not so in my case!

Picture attached, and the picture should be rotated 90 degrees clockwise, with the bypass valve in the normal position (for now).

Any idea where I'd find the water heater inlet and outlet valves without removing all the panels in this motor home?

[l1v3fr33ord1]

Bud-

With that kind of bypass valve, there usually are no inlet or outlet valves- just a check valve on the outlet. Throw the bypass valve to bypass position, and if the outlet check valve is working correctly the inlet and outlet piping are connected.

If the outlet check valve is not working correctly, then antifreeze will go into the water heater with the valve in the bypass position.

I took a similar bypass valve out of my coach, replacing it with a three-valve system. I wanted to eliminate the check valve(s), a common failure item. I had the room to do that, though.

[Old-Biscuit]

Originally Posted by l1v3fr33ord1

Bud-

With that kind of bypass valve, there usually are no inlet or outlet valves- just a check valve on the outlet. Throw the bypass valve to bypass position, and if the outlet check valve is working correctly the inlet and outlet piping are connected.

If the outlet check valve is not working correctly, then antifreeze will go into the water heater with the valve in the bypass position.

I took a similar bypass valve out of my coach, replacing it with a three-valve system. I wanted to eliminate the check valve(s), a common failure item. I had the room to do that, though.

YEP^^^^
That Bypass Valve shuts off COLD to WH Tank and connects COLD to HOT ---Hot Outlet on WH Tank would have a 'Check Valve' to prevent backflow into WH Tank via Hot line
**Check Valve...CHEAP plastic plunger/spring/O-ring assembly IE: JUNK
RV MFGs install them....NOT Water Heater MFG OEM