Hitachi Set Free mini-HNRQ1 Series, Service Manual

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34
INSTALLATION
WARNING
!
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The ELB (Earth leakage breaker), FUSE and S (Main switch) must be installed to each power source of
outdoor unit and indoor units. If not, it may cause of an electrical shock or fire.
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Perform the electrical work according to the regulations of each region and this installation and maintenance
manual. A separate, dedicated electrical circuit must be used. If the electrical wiring work is performed
incorrectly or there is a capacity shortage of the power circuit, it will cause an electric shock or fire.
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Check that the ground wire is securely connected. Otherwise, it may lead to an electrical shock. Do not
connect the ground wiring to gas piping, water piping, lightning conductor, or telephone ground wirings.
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In the electrical wiring connection for RAS-7.0~12HNBRMQ1, do not connect the live wires (L1/L2/L3) to the
terminals N of the terminal block TB1. Otherwise, printed circuit board may be damaged.
4.3 Electrical Wiring for Outdoor Unit
Avoid the wirings touching the refrigerant pipes, plate edges and electrical parts inside the unit. If not, the
wires will be damaged and at the worst, a fire will occur.
Figure 4.3 Electrical Wiring for RAS-3.0~6.5HNBRKQ1