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 Pump
• Do not turn the water pump ON if the fresh water
tank is empty. Doing so could cause damage to the
water pump.
• Do not turn the water pump ON when using water
from an external source. Only operate the water
pump if using potable water stored in your fresh
water tank.
• The water pump should be turned OFF when the
motorhome is left unattended for any amount of
time. This may help limit potential damage should
something fail within the water system.
NOTICE NOTICE
The water pump is used to draw fresh water from the fresh
water tank whenever the motorhome is not connected to city
water (e.g., campsite water). To operate the water pump,
12 volts DC power must be available (turn ON the main bat-
tery switch).
Once turned ON at the monitor or multiplex or panel, the
water pump (also known as an on-demand pump) will self-
prime, pressurize the water lines, and provide water to the
faucets, shower, and toilet. As long as the water pump switch
is ON, and there is water in the fresh water holding tank, the
pump will automatically cycle on and off as water demand
requires.
OPERATING THE WATER PUMP
The water pump is designed to operate automatically on an
as-needed basis. Using the water pump continuously, such as
leaving a faucet open for an excessive time period, or operating
the water pump without water in the fresh water holding tank,
will shorten its operational life and is not covered by warranty.
The water pump has a check valve that prevents water from
back-flowing out the city water fill.
DO NOT OPERATE THE WATER PUMP IF THE FRESH
WATER HOLDING TANK IS EMPTY OR THE MOTOR-
HOME IS CONNECTED TO AN EXTERNAL WATER
SOURCE.
1. Make sure there is adequate supply of water in the fresh
water holding tank.
2. Be sure the water heater bypass valves are set correctly
according to your water system label.
DO NOT
OPERATE THE WATER HEATER IF ITS WATER
SUPPLY IS BYPASSED.
3. Open all the faucets (first hot, then cold) including your
interior and exterior shower faucets.
4. Turn the pump switch ON, and allow the water pump to
fill the water lines and hot water heater tank (if installed).
After water is flowing in a steady stream from all your
faucets, turn the faucets OFF. The water pump should
stop operation automatically when all faucets are closed.
The pump should now run 'on-demand' when a faucet is
opened, and stop when the faucet is closed.
5. The water pump switch must be ON to provide water to
the toilet.
The switch for the water pump is usually located on the Monitor
Panel or Multiplex Main Panel (if equipped). Refer to Electrical
System Section. Some installations provide a water pump switch
on the bathroom wall or other convenient locations.
For additional information on the care and operation of
the water pump, refer to the water pump manufacturer’s
information.
Water Pump Strainer
If equipped, periodically check the in-line water pump strain-
er for accumulated debris. The strainer is usually located on
the inlet to the water pump. To clean the water pump strainer
shut OFF the water pump, unscrew the clear cap, remove the
reusable strainer cartridge, clear any debris, rinse with clean
water, and reinstall the strainer and cap.
Fresh Water Filter
Your motorhome may be equipped with a cartridge-type
fresh water filter. Periodically, the filter cartridge will need to
be replaced. Also, when sanitizing or winterizing the water
system, be sure to follow the guidelines specified for the water
filter. Water system diagrams are included as part of the sche-
matic set for your motorhome, available through your TMC
Owners Resource account.
Rear Convenience Panel
Located inside the
rear door of some
floor plans is a
convenience panel
and storage area.
Included on this
panel:
• 120 volt AC
receptacle
• 12 volt DC
receptacle
• Water pump
switch
• Convenience light switch
• Quick disconnect water hose with spray nozzle
The storage area provides a convenient place to stow the shore
power cord and the coiled water hose, along with ample room
for the potable fresh water hose.
Convenience panel