Johnson JR8 Serie Guide D'utilisation page 116

2. The external power cables are inserted into the wiring
holes of the chassis and the electric control box, and
the power cables "L1, L2, L3, N" and earth wire are
connected to the power wiring board marked with "L1,
L2, L3, N" and the grounding screw next to the power
wiring board correspondingly.
Power supply
L1 L2 L3 N
L1 L2 L3 N
WARNING
Terminals must be used for connection. Use
round-type terminals
specifications to connect the power cables.
Do not directly connect the cable ends. Use
the correct terminal, or it may cause heating
and fire.
3. Fasten and fix the cables with wire clips to avoid stress
on the terminals.
wire card
4. Press the plastic board of the power line terminal back
and confirm that the power phase sequence is correct
again.
plastic board
WARNING
Select a proper torque according to the screw
size.
Too small torque may cause poor contact,
resulting in heating of the terminals and fire.
Too large torque may damage the screws
and power supply terminals.
The size of the screws and recommended torque are as
follows:
Table 5.9
Screw specification Standard value (kgf.cm)/(Nm)
M4
M8
Fig 5.49
of the correct
Fig 5.50
Fig 5.51
12.2/1.2
61.2/6.0
37
CAUTION
During installation, the earth line shall be
longer than the current carrying conductor to
ensure that when the fixing device is loose,
the earth line is still not stressed and can be
reliably grounded.
When inserting the strong-current cables and
communication lines into the wiring holes,
they must be equipped with wiring across
rings. Otherwise, they may be worn out by
the sheet mental and cause electric leakage
or short circuit.
Outdoor unit wiring diagram
Circuit Circuit
breaker1 breaker2
Outdoor unit1 Outdoor unit2
WARNING
Do not connect the earth line of the lightning
rod to the unit shell. The earth lines of the
lightning rod and the power cable must be
configured separately.
Each unit shall be equipped with a circuit
breaker for short circuits and abnormal
overload protection. In addition, the indoor
and ODUs shall be equipped with a main
circuit breaker respectively to connect or
disconnect the main power supply of the
indoor and ODUs.
Circuit
breaker0
Circuit
breaker3
Outdoor unit3
Fig 5.52
V.1