9
！
危
险
！
·
Seal all wiring holes to protect from moisture, insects, etc.
·
Tightly
secure
the
power
source
wiring using
the
cord
clamp
inside
the
unit
.
Note: Secure
the
rubber
bushing
with
adhesive
when conduit
tubes
to
the
outdoor
unit
are
not
used
.
General
check
(
1) Make
sure
that
the
field
-
selected
electrical components
(
main
power
switches
,
circuit breakers
,
wires
,
conduit
connectors
and
wire
terminals
)
have
been
properly selected
according
to
the
electrical
data and that they all
comply with
National
Electrical
Code
(
NEC
).
(2) Ensure
that
the
voltage
of
power supply
is
within
+
10
%
of
nominal
voltage and
earth/ground wire is connected at that power
supply. Failing to do so will damage electrical components.
(3) Ensure
that
the
power supply
is
adequately sized.
Failure to properly size the power supply may cause compressor malfunction or failure.
(4) Ensure
that
the
earth/ground
wire
is connected
.
(5) Install
a
main
switch. Multi-pole
main
switch
with
a
space
of
0.14 in. (3.5mm)
or
more, single phase
main
switch
with
a
space
of 0.12 in. (3.0mm) or
more
between
each
phase
.
(6) Ensure
that
the
electrical resistance
is
more
than
2
M
Ω,
by measuring
the
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
.
·
Turn
OFF
the
main
power
switch
to
the
indoor
unit
and
the
outdoor
unit
and
wait
for a minimum of 3
minutes
before
performing electrical
wiring work
or
a
periodical
check
.
·
Make sure that the indoor and outdoor fans have stopped completely before performing electrical work or a periodical
check.
·
Protect
the
wires
,
electrical
parts
,
etc
.
from rats
or
other
small
animals
.
If
not
protected
,
fire could occur.
·
Prevent the
wiring
from
touching
refrigerant
pipes
,
plate
edges
,
and
electrical parts
inside
the
unit
.
·
Install
an
ELB
(Electric Leakage Break)in
the
power
source
.
If
ELB
is
not
used
,
it
can
cause
electric
shock
or fire
.
·
This
unit
uses
an
inverter
,
which
means
that
it
must
be
used
an
earth
leak
detector
capable
handing
harmonics
in
order
to
prevent
malfunctioning
of
the
earth
leak
detector
itself.
·
The use of intermediate connection wires, stranded wires(see
<Attentions
when
Connect the power supply wiring>
),
extension cables or control line connection, is prohibited. The use of such connections may cause electric shock or fire.
·
The
tightening
torque
of
each
screw
shall
be
as
follows
.
M4
:
.0
lb
ft
(1
.
0
to
1
.
3
N
·
m)
0.7
to 1
f
· .
M5
:
1.5 to 1.8 lb
(2
.
0
to
2
.
5
N
·
m)
f
·
ft
.
M6
:
3.0 to 3.7 lb
(4
.
0
to
5
.
0
N
·
m)
f
·
ft
.
M8
:
6.6 to 8.1 lb
(9
.
0
to
11
.
0
N
·
m)
f
·
ft
.
M10
:
13.3 to 217 lb
(18
.
0
to
23
.
0
N
·
m)
f
·
ft
.
Keep
the
above
tightening
torque
when
wiring
work
.
WARNING
CAUTION
Installation instructions
Wiring