WATER AND PLUMBING OPERATION REGENCY ULTRA MOTORHOME
W a t e r a n d P l u m b i n g O p e r a t i o n | 55
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 of fresh water supply your
motorhome’s sink, shower, toilet and water heater:
o A fresh water tank located inside your
motorhome.
o 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 and water fill selector
valve are located in the rear utility center.
The water fill selector valve has two positions:
o Water Tank Fill
o City Water
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
• Press the bottom of the water pump
switch to turn off the water pump. The
switch is located on the system monitor
panel in the cabinet above the coach
entrance doorway.
• Attached a potable water hose to the city
water connection.
• Turn the water fill selector valve to the
city water position.
• Turn on the city water supply.
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