THOR CLASS A - Water System Operations

WATER SYSTEM
THOR MOTOR COACH | MADE TO FIT
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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, pur-
chase and keep separate a sanitized water hose, whose sole
function is for use with your potable water delivery and
storage. Use a dierent water hose for other water-related
activities, such as cleaning outdoor furniture, washing the
motorhome, maintenance, or sewer system cleanup.
Connecting to a Fresh Water Source
Typical city water fill connection
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 IF ITS
WATER SUPPLY IS BYPASSED.
2. Remove the cap from the fresh water inlet on the side
of the motorhome.
3. Attach one end of your potable (drinking) water hose
to the external water source spigot.
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.
NOTICENOTICE
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.
CAUTIONCAUTION
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
shower to clear
air from the
lines. Close the
faucets when
the water is
owing freely.
Disconnecting from a Fresh Water Source
1. Turn OFF the external water source spigot.
2. Disconnect your potable water hose from the supply
valve and the fresh water inlet.
3. Remove the water hose and store it in an appropriate
place.
4. Reinstall the cap on the fresh water inlet.
NOTE:
• The use of in-line water filters and pressure reg-
ulators (not supplied by TMC) is recommended
whenever potable water is being delivered by an
external source. Ask your dealer for details.
• 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 valve from the city water source.
This will prevent or reduce any damage that could
be caused by a pressure-induced leak in the moto-
rhome’s water system pipes or fittings.