Owner`s manual

137
2008 KNIGHT
WATER SYSTEMS — 6
WINTERIZATION
Water, plumbing and sewer systems require
winterization when the motorhome is placed
in storage. The recommended method of
winterizing the motorhome 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 lled 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.
Using Air Pressure
Access to an air compressor and an adapter to
connect the air line regulator to the water system
is necessary. Air adapters used for winterization
are available at RV supply locations. Air
pressure SHOULD NOT exceed 40 PSI.
Higher pressure can damage the lines.
WARNING
It is recommended that a qualified
RV service technician familiar with
motorhomes, such as an authorized
dealer, perform the winterization
procedure.
NOTE
Freeze damage is not covered under
warranty.
1. Empty and ush the holding tanks.
2. Disconnect the water line connections
on either side of the water lter bowl
head. Connect the bypass hose to
the water lines. Unscrew lter bowl,
remove old cartridge and empty any
remaining water in the bowl. DO NOT
screw lter bowl back onto lter head
(see “Water Filter.”).
3. Drain the fresh water tank by opening
the fresh water tank drain valve located
in the roadside water service center.
4. Open fresh water tank low point drain
valve. Open winterization valve. Open
hot and cold water low-point drain
valves. Open water pump shut-off
valve. All are located in the roadside
water service center.
5. If equipped, open the secondary ice
maker drain valve.
CAUTION
Some appliances such as the washer/
dryer and ice maker require special
winterizing instructions not covered
in this section. Refer to the specific
appliance OEM manual for instructions
and recommendations.
6. Turn the water pump on for 30 - 60
seconds and allow it to run so that all
the water is cleared out of the pump
and water tank.
7. Turn the pump off.
8. If applicable, disconnect water line to
ice maker.
9. Close water pump shut-off valve. Close
winterization valve.
10. Leave open hot and cold water low-
point drain valves, fresh water tank low
point drain valve, and fresh water tank
drain valve.
11. If equipped, leave open the secondary
ice maker drain valve.
12. Open the water
heater exterior access
door. Open the high
temperature/pressure
relief valve to vent water
heater. Remove water
heater drain plug and
allow water heater to
drain.
13. Locate bypass
valve at back of
water heater and
move valve to
BYPASS position.
14. Connect an
air hose with
regulator to
the City Water/
Fresh Tank Fill
connection. Position the
City /Fresh Water control
lever to the “City Water”
position. Set regulator
to 40 PSI and turn on air
compressor. DO NOT
exceed 40 PSI in the
water lines and faucets.
15. When water stops owing from low
point drain valves, open all faucets
- including outside faucet and shower
- one at a time until air comes out. Do
not forget to drain the shower faucet.
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