Volt System City Power Overview; Energy Management System (Ems) Overview - Airstream INTERSTATE 24 TommyBahama Owner's Manual

120 volt System
City Power Overview
When plugged into shore power, the Volta Power
System Flex Pack samples incoming power for a few
seconds to ensure uniformity requirements exist� If
incoming power meets the requirements, the Volta
System begins charging the Flex Pack battery (house
battery)� If the Volta System is on when establishing
a shoreline connection, the Battery Power On/Off
Pushbutton (battery disconnect) LED will remain
solid green� If the System is off when establishing a
shoreline connection, the Pushbutton LED will flash
green� For more information,
Flash Codes on page 5-12
Shoreline Connection on page 5-15�
120 VAC shoreline power (city power) enters the coach
through the SmartPlug Cordset shoreline connection,
Smartplug inlet, and distribution panel, where it is
distributed to each appliance or receptacle� The 120
VAC electrical system provides power to operate the
A/C, converter, and 120 VAC receptacles for portable
appliances�
The inverter/charger converts shoreline 120 volt
alternating current (120 VAC) to direct current (DC)
power to charge the battery pack and diverts 120 VAC
shore power to 120 VAC systems�
All wire, components, and wiring methods meet federal
and state requirements� The wiring is protected by
circuit breakers when connected to external AC power�
The circuit breaker panel for the 120 volt system is
inside the Power Center;
5-7�
If an outlet or appliance is not working, check your
touring coach circuit breakers and the breaker at the
shoreline connection� If a breaker continues to trip after
you have reset it several times, your circuit may be
overloaded with devices/appliances, or there may be
a short in the circuit� The Energy Management System
(EMS) should shed loads to prevent breakers from
tripping� Ensure the Power Source on the electrical
screen matches your incoming power source� If all else
fails, try lessening the load on the circuit by turning off
devices while using external appliances like vacuum
cleaners� If that does not solve the problem, consult an
Airstream Service Center�
Do not connect the Volta System to a 240 VAC
outlet. Connecting to a 240 VAC outlet may result
in permanent damage not covered by warranty.
2023 Tommy Bahama Interstate 24
see Pushbutton LED
and see Charging via
see Power Center on page
WARNING
Energy Management System (EMS)
Overview
NO SHORE
AUTO
Screen images may vary slightly with continuous
improvements/firmware updates
The Energy Management System (EMS) is a function
of the Firefly Multiplex system� The electrical screen of
the central Multiplex panel (example above) displays
EMS data�
The system monitors the total current draw of the
coach's 120 VAC power system� When running multiple
appliances or turning on devices like coffee makers
and vacuums, the system will temporarily shed other
loads (reduce/remove power from certain devices)
like the heating/hot water electric element to prevent
nuisance breaker tripping�
Upon decreasing the additional demand, and
approximately 2-3 minutes pass, the system will
automatically power up appliances and components in
reverse sequence�
Load shedding occurs in the following sequence
depending on the demand:
1� Heating/Hot Water System Electric Element
2� Air Conditioner Compressor
3� Cooktop
4� Microwave
The number of appliances and devices the system can
run simultaneously depends upon available power�
With a 15A shore connection, you may be limited to
one or two appliances before the EMS will begin to
shed loads�
Power Source selections for the EMS range from 15A
to 30A, depending on your current power source�
Navigate to the electrical screen on the central
multiplex touchscreen panel to see the current
selection next to the block titled Power Source;
Multiplex System on page
Interior
see
5-18�
5-9