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Section 8: Plumbing System
Preparing your motor home for colder weather or storage is very important for most states
and Canada. Failure to prepare your motor home may cause water supply lines and the water
heater to freeze.
The motor home should be winterized at the end of the camping season or when the motor
home will be exposed to temperatures that will fall at or below 32°F (0°C). Repairs due to
freezing are not covered by warranty.
No commodity or product should be added to the fresh water system to ensure freeze
protection other than RV antifreeze.
The preferred method is to winterize the plumbing system with RV antifreeze. Please read,
understand and follow all instructions before beginning to winterize you motor home.
Your motor home may be equipped with a utility center. The winterizing process is different
for units with a utility center than it is for units without one. The following sections will
address both applications. It may be easier to winterize the motor home with another person
to assist you.
Winterizing with Antifreeze method (with utility center)
1. Level the motor home and drain the fresh water plumbing system.
2.
Turn the water valves OFF on each side of the water filter canister. The canister is
located behind the utility center. Unscrew the canister and remove the filter. Re-
attach the empty canister and turn the water valves ON (refer to the
Water Purification
section).
3. Water heater power switches (12V gas & 120V electric at the command center) should
be turned OFF. Gas valve at the water heater should be turned OFF. The tankless water
power switch is located outside the RV.
4. Turn the water heater bypass valves (if so equipped) to the BYPASS position. Tankless
water heater will not have bypass valves.
5. Move the valves to the “Sanitize/Winterize Lines” position. The low point drains must
be closed for the antifreeze to siphon through the lines.
6. Attach the short hose supplied with the motor home to the fresh water connection inlet
and insert the other end of the hose into a gallon container of RV antifreeze (1 gallon
should be enough to winterize the motor home). To assist the siphoning process, put the
container on a surface approximately two feet above ground level.
7. Turn the water pump ON. If the water pump fails to self-prime, temporarily open the
low point drains. Close the low point drains as soon as the water pump primes (RV
antifreeze will begin draining out)] and before continuing to the next step.
8. Open the hot water line on all the faucets (kitchen, lavatory, shower and outside shower)
until RV antifreeze begins to flow continuously.
9. Appliances should also be winterized.
NOTE: Appliances (refrigerator, dishwasher or clothes washer)
must be winterized. Refer to the appliance owner's manual for ad-
ditional information or contact your Dealer or Customer Service for
assistance.
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