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6.8 Thermal insulation
To process the thermal insulation for air side and liquid side
piping. Please insulted the air side and liquid side piping
completely, in the reason of during operate cooling mode the
ambient temperature is very low.
1) Thermal insulation at least 120 °C material shall be apply for air
side piping.
2) Apply attached thermal insulation material to wrap the
connective part of indoor piping tightly without gap.
Unit body
Subsidiary belt of thermal
insulation pump
7. WIRING
7.1 Electrical wiring
CAUTION
1) Special power shall be applied within rated voltage range.
External circuit of this air conditioner must be grounded that
means power cable of outdoor unit shall be jointed with external
grounding wire reliable.
2) Electric wiring must be done by professionals, and wiring
according to the wiring label.
3) Fixing circuit must be wired with an a11-poledisconnection
device at least 3mm switching distance of contact.
4) Setting the electrical leakage device according to national
regulation.
5) Power cables and signal wires shall be arranged orderly and
be wired rational without mutual interfere, and connective pipes
and body of valves without mutual contact among them.
6) The attached connective wire is 10m, provided that the
length were not long enough, you must replace it by an
appropriate length connective wire in the same specification. In
a normal circumstance, it is not allowed to overlapping the two
wires, but welded fix and wrapped by insulation adhesive band
is except.
7) All electric wiring is finished, you could input power as long
as confirm that all wires connect are correct and fix tightly.
Table 7-1
Item
Model:MDV-D
2200W～7100W(N1)
2200W～7100W(DN1)
installation manual
10
Cut it from up to down
Field piping side
Fig.6-6
Power supply of indoor part
Power switch
Power supply
Safety
Capacity
fuse
Signal-phase
220-240V ~ ，
15A
15A
1PH，50Hz
7.2 Power specification
The power cable specifications are as follows. In case power
capacity is too low may result in over-heating of piping that
would be burned out the unit (refers to Table 7-1).
7.3 Indoor and outdoor unit communication wire
1) The controlling wire has to use shielding line. Use other wires
may produce signal disturb and cause malfunction.
2) Inter-connect all the shielding nets of shielding line, and at last
be together connect to the metal plate grounding "
Fig.7-1).
3) Prohibit tying up controlling wire and refrigerant pipe, power
line etc. together. When the power line and the controlling wire
are parallel lain, their distance should be at least 300mm, for
avoiding the signal source will be disturbed.
4) The controlling wire can not be closed loop.
5) The controlling wire has polarity, and pay attention while wiring
and wire correctly.
6) The indoor and outdoor units please use three-core shielding
wire (greater than or equal to 0.75mm²), and the shielding wire
has polarity, and need to be wired correctly; The indoor and
outdoor unit signal wires can only be led out and connect from
the outdoor main unit.
7.4 Indoor unit power supply
1) The indoor unit power source should not be shared with
outdoor unit.
2) The indoor units that connect to the same outdoor unit should
use the same power source, creepage protector and main
switch.
7.5 Dispose of the wiring connector
Use attached heat-insulating materials to seal up the wiring
connector, and if sealing failure it will cause condensation.
7.6 The wiring of the panel
Connect the swinging motor wire holder according to the Panel
Installation Instruction.
7.7 Terminal board setup diagram
Wiring refers to the every indoor unit connecting diagram.
Connect wiring
Signal wire of indoor
Power cable
and outdoor unit
Below 20m Below 50m
Qty.
2×2.5mm
2
2×6mm
2
1
2×6mm
2
2×4mm
2
"(refers to
Ground Line
Wire diameter
Single-line
Three-core
2.5mm
2
shielding wire
0.75mm
2
Single-line
3.0mm
2
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