Monaco 2008 Knight, Owner'S Manual

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160
2008 knight
elecTrical sysTems - house — 8
DIStrIBUtIon panel (50 amp)
House 120/240 Volt AC Panel
The AC distribution panels are located in a
bedroom cabinet. The main 240 Volt AC panel
receives power from the transfer switch, which is
supplied by either shore power or the generator.
The AC power is supplied to the 50 Amp main
breaker first. Then the power is supplied to the
individual branch circuit breakers. The panel
label describes the breaker layout and the item,
outlet or appliance to which they pertain.
NOTE
This panel will vary with options or
changes to the motorhome.
WARNING
The 120/240 Volt AC panel contains high
voltage which can cause serious injury
or death. Before beginning any work or
testing procedures involving the electric
panels, or any of the branch circuits,
be sure the motorhome is unplugged
from shore power and the generator is
not running and the inverter is in the
off position. Certain testing procedures
can require the AC power to be on. Only
qualified personnel or personnel with
electrical backgrounds should attempt
any testing procedures.
Energy Management System
The Energy Management System is easily
identified by the remote display panel located
inside motorhome.
The 50 Amp Smart EMS consists of two
elements: the display panel and the bedroom
distribution panel. The distribution panel,
located in the bedroom, is a completely self-
contained 120/240 Volt power distribution and
energy management system intended to be used
in recreational vehicles. It is housed in a sheet
metal enclosure with removable front panel.
It provides circuit protection for all the 120
Volt AC loads in the motorhome and a system
of energy management to minimize the over-
loading and tripping of circuit breakers.
Circuit Breakers:
The distribution panel offers slots for eight
single or dual, standard 120 Volt circuit breakers.
Two of these breakers, located in the two center
positions, must be a 50 Amp unit that act as
a main input protection for each of the lines
supplying the remainder of the branch breakers
(up to 12).
Energy Management:
The 50 Amp Smart EMS automatically
senses the available power to the motorhome,
determining whether it is connected to a 120 Volt
AC - 30 Amp shore power source, 50 Amp shore
power source or generator source. Depending
upon available power, the EMS controls the
operation of 6 possible loads as indicated on the
distribution panel. These may be any type load,
but are typically heavier loads; those whose use
can be “postponed until a time when current is
available for use. If the available power source
is 120 Volt AC - 30 Amp shore power, the EMS
attempts to keep the total 120 Volt current draw
to less than 30 Amps.
Operation:
If 120 Volt AC is not available at the
distribution panel, L1 or L2 outputs, the
system shuts itself off. This feature is intended
to prevent the system from drawing current
from the +12 Volt DC battery supply when
not in operation. When 120 Volt AC power is
applied, the system automatically powers up and
determines the nature of the power source.
If the generator is running, 120 Volt AC will
be present at the distribution panel L1 and L2
inputs. In this mode the energy management
feature is disabled and all control relay contacts
are closed, energizing all of the controlled loads.
The control module sends a signal to the display
panel causing the load meter to display actual
load current, the GEN SET service indicator to
light and all power status indicators to light.
If 120 Volt AC is present at the distribution
panel L1 and L2 inputs the system will assume
that 120 Volt AC, 30 Amp shore power is
available and the energy management feature
will be enabled. If only 20 Amp service is
available the user must select the 20 AMP
service mode by momentarily pressing the 20/30
Amp select switch on the Control Panel. Initially,
all relay contacts are closed and the total current
is monitored. If the total current should exceed
the service limit the system will turn off the first
load in the shedding table, turning the loads off
and calculating the amount of current that was
removed, which is the value for that load. This
value is placed in memory.
060286q