Electrical Installation; Test Run - Hitachi RPFC-3.0UFE1NH Installation & Maintenance Manual

INSTALLATION AND MAINTENANCE

8 Electrical installation

• Use an ELB (Electric Leakage Breaker). If not used, it may cause an electric shock or a fire.
• Do not operate the system until all the check points have been cleared.
a Ensure that the insulation resistance is more than 2MΩ, 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.
b Ensure that the stop valves of the outdoor unit are fully opened and then start the system.
NOTES:
1 Follow local codes and regulations when selecting field wires, and all the above are the minimum size.
2 The wire sizes marked in the table are selected at the maximum current of the unit according to the European Standard,
EN60335-1. Use the wires which are not lighter than the ordinary polychloroprene sheathed flexible cord (code designation
H07RN-F).
When connecting the terminal block with flexible cord, make
sure to use the round crimp-style terminal for connection to the
power supply terminal block.
Place the round crimp-style terminals on the wires up to the
covered part and secure in place.
When connecting the terminal block with a single core wire, be
sure to perform curing.
3 When transmission cable length is more than 15 meters, a larger wire size should be selected.
4 Use a shielded cable for the transmitting circuit and connect it to ground.
5 If power cables are connected in series, add each unit maximum current and select wires below.

9 Test Run

Please perform test run according to installation manual of outdoor unit.
20 HO2019291HA
!
WARNING
Model Capacity
3.0/3.5/4.0/5.0/6.0/6.5HP
Selection According to EN60335-1
Current i (A)
i≤6
6<i≤10
10<i≤16
16<i≤25
25<i≤32
32<i≤40
40<i≤63
63<i
*If current exceeds 63A, do not connect cables in series.
Transmission cable size
EN60335-1
4x1.5mm
2
Covered part
Round crimp-style terminal
Terminal
Single core wire
Wire Size (mm )
2
0.75
1
1.5
2.5
4
6
10
*
Flexible cord