i
‐
SHWAK
V4
Inverter
air/water
chillers
and
heat
pumps
with
floor
‐
standing
and
remote
condensing
units
29
Remove
the
mounting
screws.
Remove
the
cover
plate
of
the
electric
box.
Connect
the
cable
to
the
terminals
inside
the
electric
box.
Please
refer
to
the
wiring
diagrams
given
in
the
manual
of
wiring
diagrams
of
the
unit.
(A)
Power
cable
hole
(B)
Auxiliary
connections
WARNING:
For
allowing
the
power
supply
and
communication
cables
to
cross
easily,
it
is
recommended
to
remove
the
side
panels.
Prepare
then
all
the
connections
before
any
concealed
installation.
Note:
All
the
pictures
in
this
manual
are
for
explanation
purpose
only.
They
may
be
slightly
different
from
the
unit
you
purchased.
The
actual
shape
shall
prevail.
8.7.1.1
Connection
terminals
For
getting
information
on
the
legend
and
location
of
the
terminal
blocks
in
the
electric
box,
please
see
the
wiring
diagrams
in
the
Chapter
27.
Power
supply
terminal
block
Single
phase
system
1
‐
Ph_230Vac
+
N
+PE
Power
supply
board
Three
‐
phase
system
3
‐
Ph
_230Vac
+
N
+PE
Terminal
block
Terminal
Description
Terminal
block
Terminal
Description
M1
PE
Grounding
conductor
M1
PE
Grounding
conductor
L
Phase
conductor
L1
Phase
conductor
1
N
Neutral
conductor
L2
Phase
conductor
2
L3
Phase
conductor
3
N
Neutral
conductor
Terminal
blocks
Terminals
Description
M2
L1
‐
1
Phase
conductor
(230Vac)
L1
‐
2
Phase
conductor
(230Vac)
L1
‐
3
Phase
conductor
for
auxiliary
systems
(230Vac)
N
‐
1
Neutral
conductor
N
‐
2
Neutral
conductor
for
double
setpoint
valve
N
‐
R1
Neutral
conductor
for
electric
heater
PE
Grounding
conductor
M3
12V
‐
Input
12Vac
12V+
Input
12Vac
E
‐
Modbus
for
connection
with
outdoor
unit
E+
R
‐
Modbus
for
communication
with
PC
or
Hi
‐
T
control
panel
accessory
R+
I
‐
Modbus
for
connection
with
outdoor
unit
I+
GNDR
GND
reference
signals
and
for
connection
with
outdoor
unit
M4
ACS
DHW
sensor
SW
Double
set
‐
point
digital
input
ON/OFF
Remote
on/off
digital
input
IMP
Plant
circuit
remote
sensor
D01
Phase
conductor
for
DHW
recirculation
circulator
D01N
Neutral
conductor
for
DH
recirculation
circulator
D02
Phase
conductor
for
DHW
valve
(230Vac)
D02N
Neutral
conductor
for
DHW
valve
D03
Phase
conductor
for
auxiliary
plant
system
electric
heater
(230Vac)
DO3N
Neutral
conductor
for
plant
system
auxiliary
electric
heater