Winterizing first time using Nautilus P1 system

[jriddle31]

First Post, First time winterizing my Rockwood Signature 8290BS 5th wheel. I printed and followed the Nautilus P1 instructions, when I got to the step of switching it to Winterize mode then proceeded with pumping in the RV Antifreeze it came out the hot water heater plug. I was under the impression (as I helped a friend winterize his GD Reflection) that the "winterize" settings on NP1 would bypass the HOT water heater? I had to put the plug back in the HOT Water heater proceeded with finishing the winterization on the fixtures inside the RV, then I took the plug out of the HOT water heater and about 2-3 quarts of RV Antifreeze came out. Did I miss a HW heater bypass switch somewhere? The GD Reflection did not push any Antifreeze to the HOT water heater... either I missed a Hot water bypass or the unit is plumbed wrong. Any thoughts?

[Flybob]

This may help
https://www.dropbox.com/s/h1luyitgh2...grams.pdf?dl=0

[jriddle31]

I contacted Rockwood support, seems my NP1 system does NOT bypass the Hot water tank. Therefore I will have to figure out how to remove some panels in my storage space to find the bypass values. Learning more every day with this unit.

[rockfordroo]

Looking at pics of your unit, the WH appears to be under the floor just outside the bathroom door. I suspect the two steps are able to be popped up to give you access behind the WH.

Alternatively, open the pass-thru just forward of the WH and look for a way to access the WH through the rear wall of the pass-thru. May need to unscrew a panel.

For something you need to access at least once per year, they never seem to make it simple.

[itat]

I also have an 8290BS but mine was built very early in the 2019 production run and doesn’t have the Nautilus. I’m able to reach the bypass valves on the back of the water heater without removing the panel across the back of the pass through. I just put my head in and reach over the panel and down to the valves.