7-5
SECTION 7
PLUMBING SYSTEMS
Holding Tanks
The black water tank holds waste
water from the toilet, lavatory, and
shower.
Black (Sewage) Tank.......... 13 gals.
The gray water tank holds waste
water drained from the galley sink.
Gray (Waste Water) Tank
Model 22QD ......................... 9 gals.
Models 22FD ........................ 6 gals.
Model 22HD ........................ 7 gals.
HOLDING TANK LEVEL INDICATORS
You can check the levels of the waste water-
holding tanks and the fresh water tank using the
monitor panel.
Press the button labeled “Gray Tank” or
“Black Tank” to show the level in each tank.
See Section 8 - Appliances for more informa-
tion on the monitor panel.
DUMPING HOLDING TANKS
The holding tanks are dumped through a
common outlet located on the left side of the
vehicle, near the rear wheels. The sewer drain
hose is stored in a compartment inside the gener-
ator door on the right side toward the rear of the
vehicle.
1. Remove drain hose from hose 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 sewage 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 waste water
valve with a quick pull. Make sure there are
no sags in the hose during drainage. Close
valve handle as soon as tank is empty.
6. After both tanks have been drained, run sev-
eral gallons of water into the sewage tank
through the toilet. Then open sewage dump
valve and drain the tank again. Close valve
and replace dust cap securely.
7. It is advisable to add an odor control chemi-
cal to the sewage holding tank. These chemi-
cals are available at most R.V. stores.
8. Rinse sewer hose thoroughly with water and
stow.
NOTE: We recommend that you dump all hold-
ing tanks before traveling to avoid carry-
ing unnecessary weight.
Aux.
Genera
tor
Sewage
Drain Hose
Pull to drain black tank
Pull to drain gray tank