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Instructions for Winterization
1� Level the touring coach from side to side and from
front to rear�
2� Turn the water pump OFF and disconnect the city
water�
3� OPEN all the water faucets and shower heads, hot
and cold, internal and external�
Water Heater Bypass Valve Shown in Normal Use Position
4� Turn the water heater bypass valve from its normal
use position a quarter-turn to the BYPASS position
and OPEN the water heater drain valve;
Heater Winterizing on page
leave a note as a reminder near the multiplex panel
that the drain valve is open and the bypass valve
needs to be reset to its normal use position before
operation�
5� OPEN the low-point drain valves�
6� OPEN the fresh water tank drain valve�
7� Allow all water to stop draining and proceed to the
next step�
8� For this step, you will need someone to operate
the toilet foot pedal/flush valve. Using the air
compressor, apply at MAX 50 lbs� of air pressure
at the city water inlet until no water remains in the
system� Operate the foot pedal on the toilet� You
may need to depress the pedal a few times to work
out all the water by allowing some air pressure to
build up between flushing. Once all the water has
been blown from the system, disconnect the air
and continue to the next step�
9� For this step, have a catch pan or a towel ready
to place under the water pump outlet to prevent
water from running out into the touring coach�
Remove the quick-connect outlet fitting from the
water pump. Turn the pump ON briefly to remove
any remaining water from the pump head and lines
running from the tank�
2024 Tommy Bahama Interstate 19
see Water
9-12. Best practice:
The water pump is mounted near wiring and
electrical components. Exercise caution to avoid
electric shock or inadvertently disconnecting
touring coach wiring when accessing the pump.
Turn off all power using the battery disconnect and
ensure all circuits in the vicinity of the pump are
de-energized before accessing the pump.
10� Check the water pump strainer to be sure no water
remains�
11� If you plan to add RV antifreeze using the optional
steps below, RECONNECT the water pump�
Otherwise, leave the fittings from the pump
disconnected until the system is ready to be used
again� Best practice: leave a note as a reminder
near the multiplex panel that the water pump is
disconnected�
12� If you plan to add RV antifreeze using the optional
procedure below, save this step for the end�
Otherwise, proceed to the Volta System Storage
section in this manual and complete the steps
for short or long term storage;
Storage on page
9-13�
The furnace/water heater manufacturer does not
recommend blowing air through the water heater or
adding antifreeze to the water heater. Air pressure
and antifreeze will cause damage to internal
components. Refer to the manufacturer's user
manual for additional winterization instructions.
Optional-Additional Steps for Winterization
An additional step to winterization is to consider adding
a non-toxic RV antifreeze (approved for drinking water
systems) to the water lines using the pre-installed
Winterization Kit�
Before beginning, read the RV antifreeze
manufacturer's label for instructions specific to the
antifreeze you plan to use� It may take a few gallons
to fill the entire system so prepare accordingly. As you
follow these steps, it will be helpful to have another
person watching and operating the faucets, shower
heads and toilet valve�
1� RECONNECT all lines and CLOSE all drain valves�
2� OPEN the sink and shower drains if they are
closed�
Maintenance
WARNING
see Volta System
WARNING
9-11
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