13
installation manual
CAUTION
Please beware when install connective pipe, do not let any air,
dust or other foreign substance invading into system.
Pipes connection could be conducted after the indoor and
outdoor unit are be fixed.
Connective pipe must keep in dry when installation, do not let
water invade in it.
Connective copper pipe must be wrapped insulation layer (at
least 9 mm thickness).
The temperature of refrigerant circuit will be high, please keep
the interconnection cable away from the copper tube
6.5 Air expels
Apply vacuum pump expels air from refrigerant charging vent of
air side in outdoor unit.
It is forbidden to apply the refrigerant inside of indoor unit for
vacuum air.
6.6 Open valve
Employ a 5 mm hexagon spanner to open the valve spool of
indoor and outdoor unit.
6.7 Leak detection
Use soap water to check whether gas leakage exists at the
adapters
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.
Fig.6-6
Unit body
Subsidiary belt of thermal
insulation pump
Field piping side
Cut it from up to down
7. 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) an all-pole disconnection device which has at least 3mm
separation distance in all pole and a residual current
device(RCD)with the rating of above 10mA shall be incorpo-
rated in the fixed wiring according to the national rule.
8) All electric wiring is finished, you could input power as long
as confirm that all wires connect are correct and fix tightly.
7.1 Electrical wiring
Item
Model:MDV-D
2800W～15500W
Power supply of indoor part
Power supply:
Power supply:
Signal-phase
220
-
240V
~,
50Hz
Signal-phase
208
-
230V~,
60Hz
Power switch
Capacity
Safety
fuse
15A
15A
Power cable
Below 20m Below 50m
2X4.0mm
2
2X4.0mm
2
2X2.5mm
2
2X2.5mm
2
Connect wiring
Signal wire of indoor
and outdoor unit
Wire diameter
Ground Line
Signal line
2.0mm
2
Shielded wire
3X0.75mm
2
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.
15A
15A
Signal line
2.0mm
2
Shielded wire
3X0.75mm
2
Table 7-1