Winterizing - Tiffin Motorhomes Allegro Bus 2016 Owner's Manual

WINTERIZING

To store your vehicle for the winter months, it is necessary to winterize the water system to help pre-
vent freezing of this system. To do this, follow these instructions:
1. Drain all the water from the water system including the holding tank(s), the hot water
heater, and freshwater tank. Also drain the water filter. For the holding tank(s), open the
gate valve(s) to drain the tanks. Turn off water heater before draining to
prevent burning element out. (NOTE: This procedure is to be performed only at a waste
water pumping station to prevent dumping of contaminated water elsewhere). For the hot
water heater, remove the outside cover and then remove the drain plug. When this tank is
drained, replace the drain plug and then replace the cover. For the water tank, open the
red-handled valve to drain the tank; then close the valve. Remove the filter cartridge from
the water filter and store it in a clean environment. Empty any excess water from the filter
housing and replace the housing.
2. Turn the by-pass valve located in the exterior sanitation compartment to the "by-pass"
position to prevent filling the water heater tank with antifreeze.
3. Disconnect the inlet connection to the water pump located in the sanitary service compart
ment under the motorhome. Attach the supplied, vinyl hose (via the plastic coupling on the
hose) to the inlet connection and hand-tighten that connection. Do not over-tighten.
4. Place the other end of the hose into a gallon of freshwater system antifreeze (one can refer
to the local Tiffin Motorhomes dealer or representative for the freshwater antifreeze formu
lation for your specific area). NOTE: Do not use automotive antifreeze; use only antifreeze
approved for RV applications. Otherwise, damage to the systems being protected may re-
sult.
5. Turn "on" the water pump to start the flow of antifreeze. Turn "on" each faucet, one at a
time and allow pure antifreeze to run through that piping. Let about one cup drop into the
drains to protect the traps.
6. When all the antifreeze is withdrawn from the bottle, disconnect the clear vinyl hose from
the water-pump inlet connection and reconnect the inlet line to the water pump. (This may
require more than one gallon of antifreeze).
7. When the winterizing process is completed, turn the water pump "off " and then reconnect
the water line. Store the vinyl hose for future use.
8. Open the water supply valve that controls flow from the pump to the tank to help prevent
freezing on that water line.
Note: Remember, the motorhome also has an exterior shower; therefore, this system must be winter-
ized, as well.
ROUTINE MAINTENANCE
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