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Follow the steps outlined in Draining the Fresh Water System with one exception, do not
drain the water heater. , close valves A&B and
open valve C. Do not remove the water heater drain plug. For the water
lter: Remove the canister, take out the lter, and reattach the empty canister.
1. Water heater power should be OFF. (both switches: electric and LP gas) Water heater
bypass valves (if applicable): A&B should be closed, valve C open.
2. Put the vinegar solution into the fresh water tank. Pour the vinegar solution into the
gravity ll using a hose (or funnel).
3. Continue lling the fresh water tank with of clean (potable) water. Pour fresh water into
the gravity ll inlet using a hose (or funnel).
4. Run water through all faucets (hot and cold, including outside shower) until chlorine
smell is gone. Turn the pump ON to send water through the lines.
5. Close all faucets including outside shower. Turn pump OFF.
6. Drain the system again, but don’t drain the water heater.
: leave valves A&B closed and valve C open. Do not remove water
heater drain plug.
7. Close low point drains and fresh water tank drain.
8. Rell the fresh water tank with clean potable water. Use the gravity ll, pour water
directly into the gravity ll inlet on the outside of the trailer.
9. Open faucets and check that the chlorine taste is gone.
10. Drain the system one more time (See Draining the Fresh Water System).
11. Remove full system canister, insert the lter, and reattach canister to the mount. For
: Open valves A&B, close valve C.
12. Rell the fresh water system with clean water. When the water heater is full of water,
turn the water heater power ON.
Automotive antifreeze (ethylene glycol) and windshield washer antifreeze
(methanol) are poisonous. Never use these products in your fresh water
system. These products are harmful and may be fatal if swallowed
Never apply air pressure to the water system with any of the valves in
the closed position. Air pressure applied to a closed valve, faucet or low
point drain could potentially damage the seals and cause water leaks. If
you have questions, consult with your RV dealer. Using RV antifreeze is
the preferred method of winterization.
If a chlorine taste lingers in the water, ush the water sys-
tem with a solution consisting of one-quart vinegar to ve gallons of
clean water. Re-ush as necessary. The vinegar solution may dam-
age the water heater or the water lter, so both must be bypassed
again before performing this operation.
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