Winnebago Sunova Operator's Manual page 88

SECTION 7 –
PLUMBING
Ice Maker Water Filter Assembly
(Located below galley sink)
• Twist the filter cartridge "counter-
clockwise" about a quarter-turn and pull it
down and out of the filter socket.
NOTE: The water filter head has a built-in
bypass. No separate diverter plug is
needed.
5. Open Faucets. Turn on the water pump and
open all sink faucets and shower head knobs.
Leave open after water stops flowing.
6. Drain Toilet. Press the toilet flush pedal and
hold until water stops flowing in the toilet.
Then turn water pump switch off.
7. Drain Optional Appliances. At this time, if
your coach is equipped with an optional
refrigerator ice maker, the waterlines for that
must also be drained.
(See "Winterizing Optional Appliances"
instructions at the end of this section.)
If not, proceed to the next numbered step.
8. 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).
7-12
Water Heater Drain Plug
(Remove with socket)
C AU T I O N
Hot water can escape from tank causing
injury. Operate relief valve or remove
drain plug only when the tank water is
cold.
• Also, open the Pressure-Temperature Relief
valve at the top right portion of the tank to
prevent air locking in the tank while
draining.
Pressure-Temperature Relief Valve
(Lift handle only when water heater is cold)
9. Connect Air Pressure. After water has
stopped draining at all faucets and drain
valves, leave faucets open and connect a
"blow-out" plug to the city water connection
on the coach. Then use a compressed air hose
regulated to 30 psi or less to force air through
the system. A blow-out plug can be purchased
at any Winnebago Industries
®
dealer.