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Unity Motorhome
De-Winterizing the Water Systems
NOTE: Flush entire water system before filling the hot water tank.
1.
Refill the water tank with fresh city water.
2.
Turn the bypass valve, located in the utility center to the "NORMAL FLOW" position.
3.
Turn the bypass valve, located in the water heater to the "NORMAL FLOW" position.
4.
Turn on the water pump switch located on the system monitor panel.
5.
Open the water faucet furthest away from the water tank. Run the water until clear water appears. Shut off the faucet,
and do this to all faucets and shower head in turn.
6.
Open the hot water line until clear water appears.
Spring Startup
Following a storage period, reactivate your Motorhome by hooking up the water pump. Pressurize the water system
and make sure it is not leaking. A visual check is all that is needed. (Monitor the water system for 15 minutes.)
Clean all your appliances and have the propane line purged by a reputable dealer. Make certain everything in the
Motorhome works correctly. Consult the chassis manual for any chassis maintenance recommendations. Now you are
ready to hit the road.
Cold Temperature Operation
Although your Motorhome is designed to withstand colder temperatures, we cannot guarantee the vehicle not to
freeze. Certain precautions should be taken in preparing for sub-zero temperature travelling.
Do not use the fresh water system in cold weather temperatures. Use only a carry-on water supply in these
conditions.
Chassis
Check engine coolant level and add antifreeze, if required, to protect against lowest expected temperature. Change
engine oil to the recommended viscosity to aid cold weather starting. See the chassis manual in the information kit for
further recommendations.
LP Gas
When travelling in winter, propane is recommended, as it will vaporize in extreme cold (above -42 °C). Butane is not
recommended due to its high vaporization temperature (0 °C). Use of butane in cold temperatures may block the
system and cause components to malfunction. Add approximately .25 liters of methyl alcohol to your LP gas container
to prevent freeze-up.
Waste System
To prevent winter freeze-up, add regular RV antifreeze through the toilet and kitchen drains, directly into the holding
tanks. Be sure to add sufficient amounts in order to protect the total volume of the holding tanks.
NOTE: Do not use alcohol-based antifreeze or other petroleum products.
Storage & Winterization
1-83
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