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4.13
Thennal insulation
ofpipe
l)
Apply thermal insulation
to the pipes
at
the
gas
side
and
the
liquid
side
respectively;
2)
Useclosed-cellthermatinsulationmaterials,withtheflameretardant$adeofBlandhightemperatureresistanceofl20C;
3)
Outerdjameterof
copperpipe<0
12,7
and
thickness
of
thermal
insulationcotton> l5mm; outerdiameterof
copperpipe>
015.88
and
thi
ckness
of
thennal insulation
cotton
2
20mm,
4)
The
nutjoints ofthe
indoor unit
shall
be
performed
thermal
insulation
The power supplies
for
the
indoor
and
outdoor
units
shall be separately designed.
The
power
supply must be designed
with
a
sub-circuit,
and equipped
with
a
current leakage protector and
a
manual
switch.
All
indoor units
in
the
same system
shall be ananged on the
same
power
circuit,
and shall be tumed on/off the power simultaneously.
It
is not
allowed to equip each indoor
unit
with
a
power
switch.
The connecting
wire
system
and
the
refrigerant pipe
system
ofthe
indoor unit
shall be incorporated
into
the
same
system.
To
reduce
the
interference,
the indoor
and
outdoor communication
cables
shall
use
two-core or
three-core shielded
twisted-pair
cables instead
of
ordinary multi-core
cables.
Conform
to related
national
electrical standards.
Electrical
wiring
shall be done
by
a
professionai
electricim.
5
Electrical
Wiring
5.1
0utdoor unit
wiring
Ifneeded,
t11e
user can purchase
a
centralized
controller,
as
shown
in the dashed
box.
For the
specific
method
ofinstallation,
please contact
your local
supplicr
Fig.5-1 Wiring
and
Control
Fig.
5-2 Electrical
Wiring
of
Single-phase
Outdoor
Units
Table 5-1
Outdoor
Unit
Wiring
Signal
Wire oflndoor/Outdoor
Units (mm) (Signal Wirc
of
three-core
shielded cable
3x1.0 (two-core shielded
cable
2x1.0)
5/14/16/1
10
Fig.
5-3
Electrical
Wiring
of Three-phase Outdoor
Units
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