Hitachi YUTAKI Serie Manual De Instrucciones página 26

COMMISSIONING
10.3.2 Wire size and Main switch protection
Recommended minimum sizes for field provided wires and select the main switches according to the next table:
Model
Power supply
RAS-2WHVRP
RAS-2.5WHVRP
1~ 230V 50Hz
RAS-3WHVRP
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N O T E
• ELB: Earth switch; CB: Circuit breaker
• 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 60245 IEC 57).
11 COMMISSIONINg
When installation is completed, perform test run according to the
Indoor Unit Installation and Operation Manual, and hand over
the system to the customer.
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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:
12 MAIN SAFETY DEvICES

Compressor Protection
High pressure switch:
This switch cuts out the operation of the compressor when the
discharge pressure exceeds the setting.

Fan Motor Protection
When the fan motor current is reached to the setting, motor
output is decreased.
The other way, when the fan motor current becomes lower,
limitation is cancelled.
14 PMML0509 rev.0 - 02/2019
Power source cable size
EN60 335-1
2.5 mm
2
2.5 mm
2
4.0 mm
2
Transmitting cable size
EN60 335-1
0.75 mm
2
• 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 properly.
Model
For Compressor
Pressure Switches
High Cut-Out
Cut-In
Low Cut-Out
for control Cut-In
Fuse
1~ 230V 50Hz
CCP Timer
Setting Time
For Condenser Fan Motor
Internal Thermostat
For Control Circuit
Fuse on PCB
MC CB ElB
(A) (A) (nº poles/A/mA)
13 16
13 16
2/40/30
17 20
RAS-2whvRP
RAS-2.5whvRP
RAS-3whvRP
Automatic Reset, Non-
- Adjustable (each one for each
compressor)
MPa 4.15
MPa 3.20
MPa 0.30
MPa 0.20
-
A 40
- Non-Adjustable
min. 3
Automatic Reset, Non-
- Adjustable (each one for each
motor)
A 5