Your motorhome is designed with a fresh water,
grey water, black water systems and associated
plumbing to handle all of the water and waste
requirements. Review this section carefully to
understand each system and how they function
There are two sources for fresh
1. A water tank located within
2. By connecting to “city water”
by means of a water hose.
Both can supply water to the
sink, shower, bathroom, toilet
The water system built into your
motorhome provides full service
similar to the system used in
your home. A 12-volt self-prim-
ing pump draws pressurized
water from the fresh water stor-
age tank to all cold faucets and
the water heater. An automatic
pressure switch, located in the
water pump maintains a positive
The utility compartment located on the drivers side
of the vehicle contains, the water pump, the pota-
ble/city water fi ll selector valve, and the water tank
COMMANDER / EMBASSY
The water system of the vehicle is contained in
the utility module on the road side of the coach.
The water pump and fi lter are located in the utility
module. The water tank is either installed under
the rear bed or under the fl oor depending on the
The utility compartment located on the drivers
side of the vehicle contains, the water pump, the
potable/city water fi ll selector valve, winterization
Fig. 12-1 DRIVERS SIDE UTILITY MODULE (COMMANDER ONLY)