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14. Turn the water pump OFF. Turn siphon valve OFF. Remove the clear hose from the
container of RV antifreeze. Leave the water tank shuto valve closed to keep antifreeze
out of the fresh water tank. See Water Heater Bypass Diagram.
15. Pour 1 cup of RV antifreeze into the sink drain P-trap.
16. To prevent staining, wipe RV antifreeze out of the sinks, shower (or tub) and toilet us-
ing a soft, dry cloth.
This method uses compressed air to blow out any remaining water in the system after ini-
tially draining water using drain valves. Tools required would be an air compressor and a
blowout plug.
1. Turn o the water heater gas valve typically located outside the RV. Water heater
power should be OFF.
2. When possible, park the RV on level ground and drain the fresh water plumbing sys-
tem. See Draining the Fresh Water System.
3. Water heater bypass should be set to . This allows air to ow through the
water heater.
4. RV water lter cartridge should be removed for winterizing. Refer to Water Purica-
tion System section.
5. Open the fresh water tank drain valve to avoid pressure build up in the fresh water tank.
6. Run the pump until it is dry (approximately 15 to 20 seconds). Operating the pump
longer than that with no water can damage the pump.
7. Open the fresh water tank drain valve to avoid pressure build up in the fresh water tank.
8. Open all faucets in the RV Including the shower.
9. Attach a blowout plug to the city water inlet on the outside of the RV. Refer to Fresh
Water Connections.
10. Attach the air hose to the blowout plug. Set compressor to .
11. Blow air into the water lines through the blowout plug and the City Water Inlet to
evacuate all water from the lines.
12. Continue blowing out the water lines for approximately 5 to 10 minutes.
13. Pour one cup of RV antifreeze in all the drain P-traps (sinks and shower).
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.
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