7-3
SECTION 7
PLUMBING SYSTEMS
connect in-line between the supply hose
and the city water input on the coach.
We recommend a regulator that controls
water pressure to
40 psi maximum
.
To disconnect from the external source:
1. Turn the external source off.
2. Open a faucet inside the vehicle to relieve
line pressure.
3. Disconnect the hose from the vehicle and
replace the cap on the connection.
SHOWER VALVE PRESSURE BLEED-OFF
After using the shower, you may notice water
dripping from the shower faucet assembly. The
dripping results when vacuum in the shower hose
(after closing the shower faucet) slowly releases
and allows water remaining in the hose to drain
down. This is a normal function of the shower
valve assembly and is not a leak or defect.
The International Association of Plumbing
and Mechanical Officials Standard TSC 21-85
(PAR. 4.3) states:
“Shower heads which incorporate shutoff
valves, shall have a minimum “drip rate” of one
(1) quart in thirty (30) minutes.”
WASTE WATER SYS-
TEM
(HOLDING TANKS)
The drainage system is self-contained and
uses two separate holding tanks to contain the
waste water until it can be dumped at an appro-
priate waste water disposal site. This means you
can use the toilet, sinks and shower even in areas
where utility hookups are not available.
The main holding tank contains the sewage
from the toilet, and is commonly called the
black
water
tank. The second holding tank contains the
waste water from the galley sink, bathroom lava-
tory and shower, and is commonly called the
gray water
tank.
The two holding tanks are both dumped
through a common outlet located on the left side
of the vehicle, near the rear wheels.
DUMPING HOLDING TANKS
1. Remove drain hose from rear bumper or
exterior storage compartment.
2. Remove dust cap from drain and connect
drain hose. Be sure it is firmly attached.
3. Place the other end of sewer hose into dis-
posal opening.
4. Open the (large) black water tank valve with
a quick pull. OPEN ONE VALVE AT A
TIME. Move hose gently about to dislodge
any waste and to ensure complete drainage.
5. Close sewage valve and open (small) grey
water valve with a quick pull. Make sure
there are no sags in the hose during drainage.
CAUTION
If items are placed into the shower
tub before shower valve vacuum
release is complete, they may become
wet.
Pull to drain black tank
Pull to drain gray tank
Pull to drain grey tank
