Hitachi UTOPIA ES Serie Bedienungsanleitung Seite 26

COMMISSIONING
10.3.2 Wire size and Main switch protection
Recomended minimum sizes for field provided wires and select the main switches in according to the next table:
Model
Indoor Units 2.0~6.0HP
Indoor Units 8.0/10.0HP
RAS-8HRNSE
RAS-10HRNSE
?
N O T E
Follow local codes and regulations when selecting field wires, Circuit breakers and Earth Leakage breakers
Use the wires which are not lighter than the ordinary polychloroprene sheathed flexible cord (code designation H05RN-F)
!
C A U T I O N
Install a multi-pole main switch with a space of 3.5mm or more between each phase
11 COMMISSIONING
When installation is completed, perform test run according to the following procedure, and hand over the system to the customer.
Perform test run regarding indoor units one by one in order, and confirm that the electrical wiring and the refrigerant piping are
correctly connected.
Test run should be performed according to the
!
C A U T I O N
Do not operate the system until all the check points have been cleared:
• 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 electrical
leakage is found and repaired. Do not impress the voltage on the
terminals for transmission 1 and 2.
• Check to ensure that the stop valves of the outdoor unit are fully
opened, and then start the system.
• Check to ensure that the switch on the main power source has been
ON for more than 12 hours, to warm the compressor oil by the oil
heater
Pay attention to the following items while the system is running:
• 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.
• DO NOT PUSH THE BUTTON OF THE MAGNETIC SWITCH(ES), it
will cause a serious accident.
• Do not touch any electrical components for more than three minutes
after turning OFF the main switch
• Confirm that the gas line stop valve and the liquid line stop valve are
fully open.
• Confirm that the leakage of the refrigerant does not exist. The flare
nuts are sometimes loosened by vibration during transportation.
• Check that the refrigerant piping and the electrical wiring conform to
the same system.
• Confirm that the dip switch setting on the printed circuit board of the
indoor units and the outdoor units are correct.
• Check whether or not the electrical wiring of the indoor units
and the outdoor units are connected as shown in the chapter
"10 Electrical wiring".
16 PMML0396B rev.0 - 11/2015
Max. current
Power supply
(A)
1~ 230V/50Hz 5.0
26.0
3N~ 400V/50Hz 26.0
13.0
"11.1 Test Run procedure by Remote Control Switch"
Power source Transmitting
cable size cable size
EN60 335-1 EN60 335-1
0.75 mm²
1.0 mm²
0.75 mm²
6.0 mm²
6.0 mm²
!
C A U T I O N
Confirm that field-supplied electrical components (main switch fuse, fuse-
free breaker, earth leakage breakers, wires, conduit connectors and wire
terminals) have been properly selected according to the electrical data
given in the Technical Catalog of the unit and ensure that the components
comply with national and local codes.
CB ELB
(A) (no. poles/A/mA)
6A 2/40/30
10A
40A 4/40/30
40A
on next page.