THOR CLASS A Owner'S Manual Download

Page: 98 / 124

WAT E R S Y S T E M

C U S T O M E R C A R E | 8 7 7 . 8 5 5 . 2 8 6 7

De-winterizing Your Motorhome

1. Drain the holding tanks (fresh water, waste water, and

sewage).

2. Attach a garden hose to the fresh water fill, and fill the

fresh water tank.

3. Turn ON the water pump switch and open the cold

water side of all faucets and shower fixtures. Shut OFF

the faucet and shower fixtures after the water runs clear

(no pink residue), and repeat for the hot water side.

4. Flush the toilet until clear water runs into bowl.

5. Dump the holding tanks again.

6. Sanitize the water system (refer to Sanitizing the Fresh

Water System).

7. If a potable (drinking) water filter has been installed:

drain the water lines, remove the assembly, clean and

reinstall using a new potable (drinking) water filter.

8. When ready to use the water heater, open the bypass

valve allow water to enter and fill the water heater tank

(remember to shut OFF the water heater bypass mixer

valve, if equipped).

NOTE: For information concerning your particular
motorhome’s water system and installed equipment,
contact TMC Customer Care or refer to the TMC
Water System Guide, available from the TMC web-
site.

Cold Weather Use of the Water System

Many owners choose to use their motorhomes throughout

the entire year or encounter freezing temperatures during

travel. Due to the risk of severe damage, prolonged use of

the water system in severely cold weather is not recom-

mended. However, winter traveling can be safe for your

motorhome’s water system if you follow a few precautions.

• To avoid damage caused by freezing, the water system

and storage tanks of your motorhome are dependent on

the ambient temperature of the motorhome remaining

above 32° F (0° C). When fully functioning and the

temperature is set properly, the furnace will provide

enough heat to protect the water system. In severe cold

however, it is wise to monitor the water temperature in

the tank, and take appropriate steps to drain and win-

terize if necessary. In weather below freezing, it may

also be necessary to open the lower cabinet doors at

night in both the bath and kitchen areas to keep warmer

air circulating around the water pipes, drain pipes, and

fixtures. Always ensure you have an adequate supply of

LP fuel to keep the furnace operational and regularly

test your LP/CO detector to ensure breathable air

inside the motorhome remains safe.

• If you are going to leave the motorhome unheated for

any length of time in severe cold conditions, you must

drain all water from the system. This includes draining

the water heater and water supply lines. Also protect

drain P-traps with antifreeze. Refer to the system win-

terizing procedures outlined in this manual.

• In cold weather conditions, it may work best to carry

cooking and drinking water with you in plastic bot-

tles or jugs instead of using the on-board fresh water

system. If you decide to use bottled water, be cautious

of water being placed down drains or being flushed

through the toilet. Water that remains in P-traps and

holding tanks is susceptible to freezing. If available,

use campground bathhouse facilities.

HOLDING TANK HEATERS (IF EQUIPPED)

Some TMC motorhomes are equipped with water holding

tank heaters. These devices are heat-pads installed under-

neath the tanks and are manually activated by a switch,

usually located on the main monitor panel or multiplex

main touch-panel. Activate holding tank heaters whenever

encountering sub-freezing temperatures. Other TMC

motorhomes may be designed with furnace heating duct-

ing directed to the water storage bays, which is designed

to effectively prevent freeze damage to the water storage

tanks. Ask your dealer if your motorhome is equipped with

supplemental water storage tank freeze protection.

NOTE: For additional information on your motor-
home’s water system, refer to the Winterizing Quick
Start Guide and the TMC Water Systems Guide
available through the TMC Owners Resource on-line
document service.

Temperatures below freezing (32°F; 0°C)

can damage

water system components. Damage caused by freezing

temperatures may not be covered by warranties.

Always ensure the water system of your motorhome is

protected from freeze damage.

NOTICE