Installation and Maintenance
9.5 Electrical Installation
●
Use an ELB (Electric Leakage Breaker). If not used, it MAY cause an electric shock or a fire.
●
Do
not
operate
the
system
until
all
the
check
points
have
been
cleared
.
resistance
between
ground
and
the
terminal
of
the
electrical
parts
.
If
not
,
do
not
operate
the
system
until
the
electrical
leakage
is
found
and
repaired
.
(
B
)
Check
to
ensure
that
the
stop
valves
of
the
outdoor
unit
are
fully
opened
and
then
start
the system
.
●
Do
not
touch
any
of
the
parts
by
hand
at
the
discharge
gas
side
,
since
the
compressor
chamber
and
the
pipes
at
the
discharge
side
are
heated
higher
than
90
℃
.
16
NOTES
:
1
)
Follow
local
codes
and regulations when selecting field wires.
2
)
The wire sizes marked in the table are selected at the maximum current of the unit according to the
European Standard , EN60335-1.Use the wires which are not lighter than the ordinary polychloroprene
sheathed flexible cord (code designation H07RN-F) .
When
connecting
the terminal block using flexible cord, make sure to use the round crimp-style terminal
for connection to the power supply terminal block.
Place the round crimp-style terminals on the wires up to the covered
part and secure in place.
When
connecting
the terminal block using a single core
wire, be sure to perform curing.
3
)
When transmitting cable length is more than 15 meters, a larger wire size should be selected.
4
)
Use a shielded cable for the transmitting circuit and connect it to ground .
Flexible cord
covered part
Round
crimp
-
style
terminal
Terminal
Single
core
wire
5
)
In
the
case
that
power
cables
are
connected
in
series
,
add
each
unit
maximum
current
and
select
wires
below
.
*
In
the
case
that
current
exceeds
63A
,
do
not
connect
cables
in
series
.
Model
Capacity(Btu/h)
Power
Supply
ELB
Power Source
Cable Size
Transmitting Cable
Size
Nominal
Current(A)
Nominal
Sensitive
Current (mA)
EN60335-1
EN60335-1
9K
220-240~, 50Hz
20
30
2
3
×
1
.
5mm
2
4
×
1
.
5mm
12K
220-240~, 50Hz
20
30
2
3
×
1
.
5mm
2
4
×
1
.
5mm
18K
220-240~, 50Hz
20
30
2
3
×
2
.
5mm
2
4
×
1
.
5mm
24K
220-240~, 50Hz
32
30
2
3
×
2
.
5mm
2
4
×
1
.
5mm
36K
220-240~, 50Hz
40
30
2
3
×
4
.
0mm
2
4
×
1
.
5mm
42K/48K/55K
380-415V 3N~, 50Hz
32
30
2
5
×
2
.
5mm
2
4
×
1
.
5mm
Max. Running Current(A):REFER TO NAMEPLATE
Current i(A)
2
Wire Size(mm)
i
≤
6
0
.
75
6
＜
i
≤
10
1
10
＜
i
≤
16
1
.
5
16
＜
i
≤
25
2
.
5
25
＜
i
≤
32
4
32
＜
i
≤
40
6
40
＜
i
≤
63
10
63
＜
i
*
Selection According to EN60335-1
(A) Check to ensure that the insulation resistance is more than 2 M
Ω
, by measuring the
