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Old 10-21-2018, 10:40 PM   #1
Junior Member
Brand: Thor Motor Coach
State: New Hampshire
Posts: 4
THOR #12622
help a newbie with heater bypass? (with pics)

OK, my first question on this forum although I have been lurking for a few months...

I bought a 1988 Thor Citation 20 foot trailer about 3 months ago. The previous owners neglected it badly, and I am gradually repairing and replacing things. I am currently at the point where I am going to replace the water pump (the original leaks like a sieve), add a "pump converter winterizing kit", and install a heater bypass set-up to avoid filling the heater with anti-freeze. Once that is done, I will be winterizing it and continuing repairs in the Spring.

I am ready to do the first two projects, and am a pretty confident DIY-er...but the heater bypass has me stumped. I understand the the antifreeze past the heater...but I look at my pipe arrangement and simply can't seem to wrap my head around what part goes where. Nothing seems to match up with all the diagrams and YouTube videos I have looked at.

Before I start cutting it really all that horrible to just fill the heater with anti-freeze? Yes, I know it will cost more money, but I would prefer that to rolling around on that cold floor with my arms jammed in the cabinet. Its not an easy location, and worse coming at it from the outside.

Below (hopefully) are pictures of the pipes. One pic is labeled, and the other is the same area from a different angle which might help more experienced eyes confirm what I think I am seeing. Can someone tell me where I should cut, and what part of a bypass kit goes where, in this lay out?

Please excuse the cobwebs...haven't cleaned this area yet. I hope these pictures come thru...

Thank you!
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