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Section 8: Plumbing System
1.
Turn water heater power OFF. Turn water heater gas valve (if so equipped) OFF (out-
side of the RV).
Water heater bypass valves should be set to BYPASS. Water is prevented from entering
2.
the water heater.
3.
Level the RV and drain the fresh water plumbing system. See Draining the Fresh Water
System.
4.
Water heater should be empty after performing Step 2. Water heater bypass valves set
to BYPASS.
Cartridge water filter (if so equipped) should be removed and replaced with the bypass
5.
hose included with your RV.
6.
Make sure the "fresh water tank drain" and "low point drains" are closed.
Close the fresh water tank shutoff Valve E. Valve should be located near the water
7.
pump. Open siphon valve (Valve D) at the water pump with the clear hose attached.
Valve handle points toward the clear hose and insert the opposite end of the clear hose
into a container of RV antifreeze solution. Valve should be located near the water
pump.
Turn the water pump ON. Antifreeze will be drawn into the water lines. In order to
8.
create a suction all low point drains must be closed.
9.
Open the hot water faucets, including outside shower (if so equipped) until RV anti-
freeze begins to flow continuously.
10. Close the hot water line faucets and outside shower and repeat with the cold water line
faucets. Hold open the lever on the toilet until antifreeze runs into the bowl.
Water can accumulate in the flexible hose and dump connector of the macera-
tor system. When winterizing the RV, antifreeze must be added to the macera-
tor system.
When you are done adding RV antifreeze:
1.
Turn the water pump OFF. Turn siphon valve OFF. Remove the clear hose from the
container of RV antifreeze. Leave the water tank shutoff valve (Valve E) closed to keep
antifreeze out of the fresh water tank.
2.
Pour 1 cup of RV antifreeze into the sink drain P-trap.
3.
To prevent staining, wipe the RV antifreeze out of the sinks, shower (or tub) and toilet
using a soft, dry cloth.
In the spring when flushing antifreeze out of the water lines, make sure to turn the water tank
shutoff valve back ON. After flushing out water lines the water filter should be re-installed.
Air Pressure Method
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.
100
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