Un-winterizing with tankless water heater

[WisconsinCougar]

Can anyone tell me what steps to take to un-winterize my Couger 5th wheel that has a tankless water heater?

 

[NH_Bulldog]

There is no special process for the tankless water heater.

To offer specific advice would require quite a bit more information, like how did you winterize it in the first place?

That being said, it gets (and often stays) sub-zero where I am, so when I winterize, I blow out the lines using compressed air, and then pump antifreeze into the entire system. When I de-winterize, I use compressed air and recapture a good amount of antifreeze in a bucket under the low point drains. Once I do that, I connect a hose to the city water connection and flush the entire system out until there is no odor, foamy water, or bad taste. After letting the system stay pressurized for a few hours or overnight, I flush it all out again to make sure it is fresh and clear.

 

[workinonit]

How did you winterize? If you used that nasty anti-freeze all you can do is flush, flush, flush. Eventually you'll get that crap out. If you used air like me, hook up the water and go.

 

[Dodge_Boy]

Yep, if you have that pink junk in your lines, open the low point drain lines and either use compressed air set at 35 psi or hook up to city water and flush the heck out of it. I never put anti-freeze in my water lines, just use compressed air, open all the faucets hot and cold, shower and hold the flush valve open on the toilet, until nothing but air comes out. Turn off the air, now open the L.P.D. lines and turn air back on and finish flushing the water out. Now add the pink antifreeze to all of your sink traps and don't forget the shower. I also add a gallon to the black tank.