Thor Motor Coach CLASS B, Owner'S Manual

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10
WA T E R S Y S T E M
T H O R M O T O R C O A C H | M A D E T O F I T
Water System
Fresh Water System
Potable (drinking) water is supplied throughout your motorhome
from either the fresh water holding tank or from a connection
to an outside water source. When using the fresh water holding
tank, water is pressurized and travels through the water lines
by means of the water pump. When utilizing an external water
source, such as a campsite water spigot, the water pump is not
needed (it is bypassed by check valves), as the campsite water
source provides pressurized water to the motorhome.
Potable Water Hose
To supply safe potable water to your motorhome, purchase
and keep separate a sanitized water hose, whose sole function
is for use with your potable water delivery and storage. Use a
different water hose for other water-related activities, such as
cleaning outdoor furniture, washing the motorhome, main-
tenance, or sewer system cleanup.
Filters may be purchased and installed in-line with the hose to
provide filtered water to the motorhome.
Connecting to an External Water Source
When an external fresh water source is available, con-
necting to it will help conserve the water supply on
board, while eliminating the need to use your on-board
water pump (water pressure is provided by the external
source).
1. Set your water heater bypass valves (if installed)
to the correct position listed on your water system
label. DO NOT OPERATE THE WATER HEATER
When connected to an external water source, it is
strongly recommended that a water pressure regulator
is used in-line with the water supply delivery hose.
Water pressure regulators are designed to reduce high
external water supply pressures to a level that is safe for
your motorhome’s water system; preventing potential
damage. RV water pressure regulators can be obtained
at RV suppliers or dealers.
NOTICE NOTICE
Some external water sources develop high water pressure,
particularly in mountainous regions. These campgrounds
or hook-up locations may not have regulated water
pressure, which could be considered excessive.
High water pressure is anything over 55 psi. Excessive
pressure may cause leaks or damage to your
motorhome's water system.
CAUTION CAUTION
IF ITS WATER
SUPPLY IS
BYPASSED.
2. Remove the cap from
the fresh water inlet,
located on the left
side of the motor-
home. The city water
hook-up is the top
port. The lower port
is the fresh water
tank fill.
3. Attach one end of
your potable (drink-
ing) water hose to the
external water source
spigot.
4. Connect the other
end of the hose to
the motorhome's city
water inlet.
5. Turn ON the external water source spigot. Gradually
open the hot and cold water at the sinks and tub to clear
air from the lines. Close the faucets when the water is
flowing freely.
NOTE: The use of in-line water filters and pressure
regulators (not supplied by TMC) is recommended
whenever potable water is being delivered by an ex-
ternal source. Ask your dealer for details.
Disconnecting From an External Water Source
1. Turn OFF the external water source spigot valve.
2. Disconnect your potable water hose from the supply
spigot and the fresh water inlet of the motorhome.
3. Remove the water hose and store it in an appropriate
place.
4. Reinstall the cap on the fresh water inlet.
NOTE: If you will be away from your motorhome for a
few hours or more, it is a good practice to disconnect
or turn off the spigot valve from the city water source.
This will prevent or reduce any damage that could
be caused by a pressure-induced leak in the motor-
home’s water system pipes or fittings.
City water fill connection, along with a
storage chamber for the sewer hose.
This image for reference only. The
water ports on Class B motorhomes
vary in type and location due to floor
plans and features.