Water Systems --- Section 6
The Executive 2005
293
COLD WEATHER CONDITIONS
A motorhome is not designed for extended use in below freezing (32° F/0° C) weather. However,
you may not experience any problems as long as the temperature does not drop too low. Interior water
lines, fixtures, water storage tanks and pumps are normally protected from moderate freezing tempera-
tures, as long as the Aqua-Hot is operating. Exposed drains may freeze quickly. If in doubt about what
temperature the motorhome will tolerate, winterize with potable antifreeze.
Cold Weather Storage
If the motorhome is stored where freezing temperatures may occur, drain the domestic fresh water
loop. Drain the fresh water tank by opening the fresh tank drain valve in the plumbing service center.
NOTE:
Icemakers, water filters, water purifiers and the Aqua-Hot all use domestic water
and should be drained and stored in accordance with the manufacturer’s recommen-
dation for winterization.
WINTERIZATION
The fresh and waste water systems require winterization when the motorhome is placed in storage.
Two separate methods that may be used, or combined, to winterize are use of compressed air to evac-
uate all liquids and/or antifreeze to replace all liquids.
The recommended method of winterizing is using air pressure to remove liquids that may freeze and
cause damage to the various systems and appliances. The lines can then be left empty, or filled with an
FDA approved RV antifreeze. When plumbing lines are drained, antifreeze is not necessary, and the
decision to use antifreeze is left to the motorhome operator.
NOTE:
ONLY FDA approved RV antifreeze should be used to winterize the water systems in
the motorhome.
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