Jayco 28BHS filling hot water tank & lines took 24 gallons?
Hi all, prepping for our first trip of the year. I like to sanitize my tank / lines after fully draining water for the winter (hot water and low points are fully drained).
Because I am at home and don't have a place to dump a full fresh tank (~75 gallons) I wanted to add just enough chlorinated water to fill the hot water heater and flush the lines a bit. Plan is to let that sit, then flush out with some additional non-chlorinated water, and dump it all at our first campground.
So... I didn't want to pull around a bunch of water. I figured 6 gallons for the hot water heater, maybe 2-3 gallons for the lines to fill up, etc. I started with 8 gallons of chlorinated water... hot water tank still gurgled, air in lines. I added another 4 gallons chlorinated, same thing. I kept adding 4 gallons at a time and ended up putting in 24 gallons before kitchen sink, bathroom sink, and shower stopped spitting air and the pump stopped running.
I'm floored by how much water it took to "refill" the system to minimum -- I don't have any water to "use" without adding more. It seems unreasonable to me. I am parked level (within 1-2 degrees).
I figured if I have 40 feet of PEX (guessing for all the lines) at 0.5" diameter, that's 240 cubic inches of water, or only about a gallon. That plus 6 gallon hot water and I should need less than ten gallons, right?
What am I missing here? Anyone else have experience with this?