Unity Motorhome
94
Water and Plumbing System
Water and Plumbing System
Water Supply
Your motorhome is designed with fresh water,
grey water, and black water systems, and the
associated plumbing to handle all of the water
and waste water requirements. Review this
section carefully to understand each system
and how they function together.
Fresh Water System
The following two sources or fresh water
supply your motorhome’s sink, shower, toilet,
and water heater:
● A fresh water tank located inside your
motorhome.
● A “city water” connection that supplies
water through a hose.
The water system built into your motorhome
provides full service similar to the system used
in your home. A 12 volt DC self-priming pump
draws water from the fresh water storage tank
to all the cold-water faucets and the water
heater. An automatic pressure switch, located
inside the water pump, maintains positive line
pressure.
The city water connection (1) and water ll
selector valve (2) are located in the rear utility
center.
The water ll selector valve (2) has the following
two positions:
● Water tank ll (i)
● City water (ii)
External Water Supply
The external water source supplies your
motorhome’s water system with water at city
pressure when the water pump is switched off.
Connecting the External Water Supply
1. Press the bottom of the water pump switch
(3) to turn off the water pump. The switch is
located on the system monitor panel in the
cabinet above the coach entrance doorway.
3
2. Attach a potable water hose to the city water
connection (1). Turn the water ll selector
valve (2) to the city water position (B).
3. Turn on the city water supply.
4. Make sure water heater valves are set as
shown above: C, D and G should be open,
E and F should be closed.
B
A
2
1
D
F
C
E
G
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