Leisure Unity 2020 - Blowing out the Air Lines; Winterizing the Water Systems

UNITY MOTORHOME MOTORHOME MAINTENANCE
135
fresh water before reinstalling both components
on the water pump.
4.
Go outside and remove the screen from the city
water fill connection, depress the center stem
until no more fluid drains out (you may or may not
see any fluid) and replace the screen in the city
water fill connection. Turn the winterize valve to
normal flow and place the suction hose in the utility
compartment.
5.
Remove the water filter canister from under the sink,
empty the antifreeze from the canister and reinstall
the water filter canister (making sure it is tight.)
6.
Remove the cap from the black tank San-TFlush
connection in the utility compartment and attach the
blowout plug to the San-TFlush connection. Blow
compressed air through the San-TFlush connection
for about 15 seconds, remove the blowout plug
and replace the cap on the SanTFlush connection.
7. Drain the black and grey waste holding tanks (pull
the black waste tank lever first and wait for it to
empty then pull the grey waste tank lever.) Make
sure tanks are empty and put one cup of antifreeze
down each sink drain, shower drain and toilet. If
equipped with a macerator pump, put ½ gal. of
plumbing antifreeze down the bathroom vanity sink
and run the macerator pump until the antifreeze can
be seen running through the hose.
BLOWING OUT THE AIR LINES
1. Attach the blow out plug to the city water hookup
in the utility center.
2.
Connect a compressed air line to the blow out plug.
3. Open all hot and cold water faucets, including the
exterior shower, and blow out all water.
NOTE: Place filter/screen in a secure location during
the storage period.
NOTE: Unity U24TB and U24IB models only - Flush
macerator toilet. DO NOT FLUSH NONMACERATOR
TOILETS AT THIS TIME.
 ᘐ NOTICE
Do NOT depress the toilet flush pedal if there is
air pressure in the system or damage to the toilet
flush valve could result.
4.
Disconnect the compressed air line and remove
the blow out plug. Release air pressure by opening
all faucets.
5.
For Unity U24TB and U24IB models only: After
releasing all air pressure from the lines, depress
the toilet flush lever while an assistant applies
compressed air into the blow out plug. Disconnect
the compressed air line and remove the blow out
plug. Release air pressure by opening all faucets.
6.
Remove the water filter canister, empty any
remaining water and reinstall the water filter
canister.
7. Drain the black and grey waste holding tanks.
8.
Add approximately 1 cup of non-toxic plumbing
antifreeze to the kitchen sink, bathroom sink, shower
drain and toilet bowl.
9.
For Unity U24TB and U24IB models only: With
the termination valves closed, run the macerator
(if equipped) for 10 seconds or until the pump is
completely empty.
DEWINTERIZING THE WATER
SYSTEMS
NOTE: Flush entire water system before filling the hot
water tank.
1. Refill the water tank with fresh city water.
2. Turn the bypass valve, located in the utility center,
to the “NORMAL FLOW’ position.
3.
Turn the hot water heater bypass valve to the
“NORMAL FLOW” position.
4.
Turn on the water pump switch located on the
system monitor panel in the cabinet above the
coach door.
5.
Open the water faucet furthest away from the water
tank. Run the water until clear water appears then
shut off the faucet. Repeat this procedure for all
remaining faucets including the shower and exterior
faucets.
6. Open the hot water line until clear water appears.