Test Run; Common; Field Minimum Wire Sizes For Power Supply - Hitachi RPK-0.8HNBUSQ Manual

Common

● ELB must be connected to the power circuit. If not,
it may lead to dangers.
● Apply the specified screw for terminal board (M4 for
TB2 and M3.5 for TB1) and fasten the screw firmly.
Wired and wireless remote control switches can
not be used simultaneously. If wired remote control
switch is connected, please disconnect the wire of
signal receptor in the electrical box.
Fig. Connection description for signal receptor

19. Test Run

Test run should be performed according to "Installation &
Maintenance Manual" of the outdoor unit.
● Do not operate the system until all the check points
have been cleared.
(A) Check to ensure that the electrical resistance is more
than 1 MΩ by measuring the resistance between
ground and the terminal of the electrical parts. If not,
do not operate the system until the electric leakage is
located and repaired.
(B) Check to ensure that the stop valves of the outdoor
unit are fully opened, and then start the system.
(C) Check to ensure that the switch on the main power
source has been ON for more than 12 hours to warm
up the compressor oil by the crankcase heater.
● Pay attention to the following items while the system is
running.
(A) Do not touch any of the parts by hand at the discharge
gas side, since the compressor chamber and the
pipes at the discharge side are heated higher than
90°C.
(B) DO NOT PUSH THE BUTTON OF THE MAGNETIC
SWITCH(ES). It will cause a serious accident.
NOTE
Disconnect the wire
of signal receptor
20. Common
20.1 Field Minimum Wire Sizes for Power
Supply
● Use an ELB (Electric Leakage Breaker). If not used, it
will cause an electric shock or a fire.
Model Power
(HP) Source
0.8
1.0
1.3
1.5 220-240V~
50/60Hz
1.8
2.0
2.3
2.5
Total Current (A)
I ≤ 6
6 < I ≤ 10
10 < I ≤ 16
16 < I ≤ 25
25 < I ≤ 32
32 < I ≤ 40
40 < I ≤ 63
63 < I
Note:
(1) Field wiring shall be in conformity to local laws and
regulations, and all wiring operations must be performed
by qualified professionals.
(2) Refer to relevant standards for above-noted power cord
size.
(3) Where power cord is connected through junction box,
be sure to determine the total current and choose wires
based on the table below.
(4) As a minimum, the chosen power cord shall be
compliant with requirements on neoprene sheathed
wire #57 as stated in IEC 60245-1, while the power cord
shall be made from copper conductor.
(5) The wiring specifications for weak-current
communication circuit shall not be lower than that for
RVV(S)P shielded wires or equivalent, and the shielding
layer shall be grounded.
(6) A switch that can ensure all-pole disconnection shall be
installed between power supply and air conditioning unit
in such a manner that the contact spacing shall not be
less than 3mm.
(7) Once the power cord is damaged, the dealer or the
professionals from designated maintenance department
must be contacted in a timely manner for repair and
replacement.
(8) For the installation of power cord, the ground wire must
be longer than the current-carrying conductor.
28
Rated Power Source Transmitting
Current Cable Size *1 Cable Size *1
0.36A
0.36A
0.43A
0.38A
1.5mm 2
0.51A
0.45A
0.58A
0.75A
2
Wire(mm )
2.5
※1
2.5
DO NOT
2.5
connect wires
4
in series when
6
the current
10
exceeds 63A.
16
※1
0.75mm 2