7-9
SECTION 7 –
PLUMBING
WINTERIZING PROCEDURE
You can winterize the water and plumbing
system of your coach using the following
method.
Blow Out Procedure
(Drain and purge waterlines using
compressed air)
1. Level the Motorhome. If the coach is not
level, there may be “low points” in waterlines
that can trap water in the lines and prevent it
from draining properly.
2. Drain Fresh Water Tank and Waterlines.
Open all waterline drain valves and drain
fresh water tank. (See “Water System Drain
Valve Locations” chart at the end of this
section for locations of drain valves on your
model).
3. Open Faucets. Turn on the water pump and
open all sink faucets and shower head knobs.
Leave open after water stops flowing.
4. Drain Toilet. Press the toilet flush pedal and
hold until water stops flowing in the toilet.
Then turn water pump switch off.
5. Drain Water Heater. Turn off the water
heater power switch before draining the water
heater tank to avoid damage to the heating
element. Drain the water heater by removing
the plug from the base of the water heater tank,
accessible from the outside of the coach.
(Requires socket and ratchet).
• Also, open the Pressure-Temperature Relief
valve at the top right portion of the tank to
prevent air locking in the tank while
draining.
Leave bypass valve handle in NORMAL
FLOW position if draining water and
blowing out waterlines. Place in BYPASS
position ONLY when using antifreeze
solution in waterlines.
Hot water can escape from tank causing
injury. Operate relief valve or remove
drain plug only when the tank water is
cold.
Water Heater Drain Plug
(Remove with socket)
Pressure-Temperature Relief Valve
(Lift handle only when water heater is cold)
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