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5.
Installing
the
refrigerant
piping
®
Freon
cylinder
® Scale
©
Valve
©
3-way
joint
©
Vacuum
pump
©
System
analyzer
©
Lo-knob
®
Hi-knob
©
To
branch
box
@
Outdoor
unit
®
Stop
valve
©
Liquid pipe
or
high-pressure
pipe
@
Gas
pipe
or
low-pressure
pipe
®
Service
port
Fig.
5-11
6.
Drainage
piping
work
The
figure
to
the
left
is
an
example
only.
The
stop
vaive
shape,
service
port
po-
sition,
etc.,
may
vary
according
to
the
model.
Turn
section
®
only.
(Do
not
further
tighten
sections
©
and
together.)
©
Charge
hose
®
Service
port
@®
Evacuation
(Fig.
5-11)
Evacuation
should
be
made
from
the
service
port
provided
on
the
outdoor
unit's
stop
valve
to
the
vacuum
pump
commonly
used
for
both
liquid
or
high-pressure
pipe
and
gas
or
low-pressure
pipe.
(Make
evacuation
from
both
liquid
or
high-pressure
pipe
and gas
or
low-pressure
pipe
with
the
stop
valve
closed.)
Remember:
Never
carry
out
air
purge
by
refrigerant.
ZA\warning:
When
installing
or
moving
a
unit
to
another
place,
do
not
mix
anything
other
than
specified
refrigerant
into
the
refrigeration
cycle.
If
air
is
mixed,
the
re-
frigeration
cycle
may
obtain
abnormally
high
pressure,
resulting
in
a
burst
pipe.
*
A
high-precision
gravimeter
measurable
up
to
0.1
kg
[3.5
0z]
should
be
used.
If
you
are
unable
to
prepare
such
a
high-precision
gravimeter,
you
may
use
a
charging
cylinder.
Note:
«Use
a
gauge
manifold,
changing
hose,
and
other
parts
for
the
refrigerant
indicated
on
the
unit.
«
Use
a
gravimeter.
(One
that
can
measure
down
to
0.1
kg
[3.5
0z])
Precautions
when
using
the
charge
vaive
(Fig.
5-12)
Do
_
not
tighten
the
service
port
too
much when
installing
it,
otherwise,
the
valve
core
could
be
deformed
and
become
loose,
causing
a
gas
leak.
After
positioning
section
®
in
the
desired
direction,
turn
section
®
only
and
tighten
it.
Do
not
further
tighten
sections
®
and
©
together
after
tightening
section
@.
Outdoor
unit
drainage
pipe
connection
When
drain
piping
is
necessary,
use
the
drain
socket
or
the
drain
pan
(option).
Drain
socket
PAC-SG61DS-E
Drain
pan
PAC-SG64DP-E
7.
Electrical
work
[1]
Basic
systems
OC
OC:
Outdoor
unit
BC:
Branch
box
IC:
Indoor
unit
RC;
Remote
controller
>
|
BC
(5-branch
type)
A
B
Cc
a”
i
~
Oo
5
5
|
RC.
|R
3 |
aS
lay)
5
Ho
es
5
be
fox
S|
5
4”
:
R
Cc
Note:
The
indoor
units
can
be
connected
to
any
of
the
5
connectors
(5-branch
type)
or
3
connectors
(3-branch
type)
of
the
branch
box.
LV
|
OC
BC
(5-branch
type)
BC
(8-branch
type)
A
B
Cc
D
E|
JA
B
Cc
Ic
Ic IC Ic
Ic
ye
[oz]
lots
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