SECTION 7 –
PLUMBING
7-8
appropriate waste water disposal site. This means
you can use the toilet, sinks, and shower even in
areas where utility hookups are not available.
The black water holding tank contains the
sewage from the toilet and may include bathroom
lavatory on some models. The gray water holding
tank contains the waste water from the galley
sink and shower, and may include bathroom
lavatory.
See “Specifications” in
Section 1 -
Introduction
for tank capacities for your model.
Dumping Holding Tanks
1. Remove sewage drain hose from water
service center.
2. Remove dust cap from sewage drain outlet
and connect sewage drain hose. Be sure it is
firmly attached.
NOTE: Black and Gray Waste Tank Drain valve
positions may be reversed, depending on
floorplan and tank location.
3. Place the outlet end of sewage drain hose into
disposal opening.
4. Open the Black Waste Tank Drain valve with
a quick pull and make sure there are no sags in
the hose. Move the hose gently about to
dislodge any waste and ensure complete
drainage. Close Black Waste Tank Drain
valve as soon as tank is empty.
NOTE: DO NOT OPEN BOTH VALVES AT
ONCE. Do not open the Gray Waste Tank
Drain valve until the black tank is
drained and dump valve closed to avoid
sewage back-up into gray tank. Gray
water also rinses any black water solids
from the sewage drain hose.
5. Open the Gray Waste Tank Drain valve. Be
sure there are no sags in the hose to ensure
complete drainage. Close Gray Waste Tank
Drain valve as soon as tank is empty.
6. Add an odor control chemical to the sewage
holding tank through the toilet. These
chemicals are available at most RV stores.
7. Rinse sewage drain hose thoroughly with
water before stowing.
NOTE: We recommend that you dump all
holding tanks before traveling to avoid
carrying unnecessary weight.
Sewage Drain Hose
(Located in water service center)
Holding Tank Drain Valves
(Located in water service center)
Sewage
Drain Outlet
Gray Waste
Tank Drain
Valve
Black Waste
Tank Drain
Valve
•
1st
- Pull Black
Waste Tank Drain
valve to drain black
water (sewage)
tank, then close.
•
2nd
- Pull Gray
Waste Tank Drain
valve to drain gray
water (sink/shower),
then close.
