Wiring Instructions - Technibel MCAV127C5VAB Technical Data & Service Manual

6-3. Wiring instructions

WARNING
Before starting installation of the multi-split system,
disconnect the gray tripolar cable of 2 meter length
joined at the indoor units' terminal base in positions
L, N and Ground mark. Be sure to refer to the Wiring
System Diagram on the outdoor unit for proper
installation of the multi-split system. Incorrect wiring
can cause system damage or personal injury.
General precautions on Wiring
Check the rated voltage on the unit's name plate before
wiring according to the wiring diagram.
Provide a power outlet to be used exclusively for each
unit, with a power supply disconnect and a circuit
breaker for overcurrent protection provided in the
exclusive line.
To prevent possible hazards due to insulation failure,
the unit must be grounded.
Each wire must be connected firmly.
No wire should be allowed to touch refrigerant tubing, the
compressor or any moving parts of fan motors.
Regulations on wire diameters differ according to national and
local requirements. For field wiring regulations, please refer to the
LOCAL ELECTRICAL CODES before starting, and carefully follow
the regulations as you do the installation.
WARNING
Do not supply power to the system until all wiring and
refrigerant tubing connections are completed and checked.
Wiring should only be done by an experienced, qualified
electrician.
Table 2 lists recommended wire lengths and diameters for power
supply systems. Refer to the Wiring System Diagram above for
the meaning of "A" and "B" in Table 2.
Table.2
Cross-Sectional Area
220-240 V
(A)Power Supply Wiring Length (m) (B)Power Line Length(m)
2
2.5mm
13
This appliance must be grounded.
Wiring System Diagram
Disconnect
switch
(Field supply)
L
N
B
Unit
1
A
2
4
L
N
Unit
1
B
2
4
Indoor unit
2
2.5mm
20
17
WARNING
A
1
2
1
2
3
Ground
4
1
2
3
Ground
4
Outdoor unit
220–240V
~ 50Hz
Ground