15
6.6.1.3
OUTDOOR
UNIT
The
electrical
connections
have
to
be
realized
by
qualified
personnel.
L2
N
NO
NC
R+
R-
L2
NO
NC
R+
R-
N
GND
GND
CO
CO
L1
L1
L3
L3
FU
SE
GND:
grounding
wire;
N1:
power
supply
neutral
wire;
L1:
power
supply
live
wire;
L2:
If
it
exists,
connect
the
live
wire
coming
from
the
system
L3:
If
it
exists,
connect
the
live
cable
coming
from
the
system
NO:
generic
alarm
output
(closed
when
the
alarm
is
not
activated);
CO:
generic
alarm
output
common
terminal;
NC:
NO
terminal
generic
alarm
output
(closed
when
the
alarm
is
activated);
R+:
modbus
+
signal
for
connection
with
indoor
unit;
R
‐
:
modbus
‐
signal
for
connection
with
indoor
unit;
WARNING:
The
grounding
of
the
signal
cable
must
not
be
connected
and
must
be
protected
from
accidental
contact
with
the
sheet:
cut
it
or
isolate
it
with
tape.
7
START
UP
Before
start
‐
up
•
Ensure
the
availability
of
diagrams
and
manuals
of
the
installed
appliance.
•
Check
the
availability
of
diagrams
electrical
and
hydraulic
diagrams
of
the
plant
where
the
appliance
is
connected.
•
Check
if
the
anti
‐
vibration
couplings
exists
on
hydraulic
pipes.
•
Check
if
the
shut
‐
off
valves
of
the
hydraulic
circuits
are
opened.
•
Check
that
the
hydraulic
circuit
has
been
loaded
into
required
pressure
and
vented
from
air.
•
Check
that
all
the
hydraulic
connections
are
carried
out
correctly
and
that
all
information
on
the
labels
are
respected.
•
Ensure
that
arrangements
have
been
provided
to
drain
condensate.
•
Ensoure
that
power
cables
and
all
terminals
anre
well
connected.
•
Check
that
the
electrical
connections
have
been
made
according
to
applicable
regulations
including
grounding.
•
The
voltage
must
be
specified
on
the
nameplate
of
the
unit.
•
Ensure
that
the
voltage
is
within
the
tolerance
limits
of
(±10%).
•
Check
that
the
heating
elements
of
the
compressor
are
powered
properly.
•
Ensure
that
there
are
no
gas
leaks.
•
Before
the
start
up,
check
that
all
shutting
panels
are
positioned
and
fixed
with
proper
screws.
The
crankcase
heaters
have
to
be
powered
at
least
12
hours
before
start
up
by
switching
off
the
main
switch
(the
heaters
are
automatically
powered
when
the
main
switch
is
switched
off).
The
crankcase
heaters
are
working
properly
if,
after
some
minutes,
the
temperature
of
crankcase’s
compressor
is
about
10°C
÷
15°C
higher
than
ambient
temperature.
Never
switch
off
the
unit
(for
a
temporary
stop)
by
switching
off
the
main
switch:
this
component
should
be
used
to
disconnect
the
unit
from
the
power
supply
only
for
lengthy
stoppages
(e.g.
seasonal
stoppages).
Besides,
failing
the
power
supply,
the
crankcase’s
resistances
are
not
supplied
thus
resulting
in
a
possible
breakdown
of
the
compressors
once
the
unit
is
switched
on.
WARNING
Do
not
modify
the
internal
wiring
of
the
unit
otherwise
the
warranty
will
terminate
immediately.
WARNING:
As
for
the
heat
pump
models,
the
summer/winter
operating
mode
have
to
be
selected
at
the
beginning
of
the
related
season.
Frequent
changes
of
this
seasonal
operating
mode
have
to
be
avoided
in
order
to
prevent
severe
damages
to
compressors.
For
the
models
PACK DUE
7
and
PACK DUE
9,
the
terminal
block
is
located
under
the
plastic
cover
on
the
right
side
of
the
the
terminal
block
has
to
be
realized
in
accordance
to
the
below
notes.
outdoor
unit
(for
the
PACK DUE 12
and
PACK DUE
16
models,
it
is
necessary
to
remove
the
protective
carter).
The
wiring
to
Summary of Contents for PACK DUE 12
Page 1: ......
Page 39: ...38 22 2 OUTDOOR UNITS 22 2 1 Wiring diagram of PACK DUE 9...
Page 40: ...39 22 2 2 Wiring diagram of PACK DUE 12...
Page 41: ...40 22 2 3 Wiring diagram of PACK DUE 16...
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