Electric Wiring - Hitachi SET FREE Series Instruction Manual

ELECTRIC WIRING

9.1.1 Installation position of the optional
drainage kit DBS-TP10A
Installation position (example: RAS-10FSXNPE, lower and side
views).
a Drain pipe
B Optional drain plug
10 eleCtriC WirinG
10.1 General information
!
C a U t i o n
• Before any work to the electrical wiring or regular inspections, switch
off the mains power supply of the indoor and outdoor units. Wait three
minutes before starting installation or maintenance work.
• Make sure that the interior and exterior fans have come to a complete
standstill before starting work on the electrical wiring or regular
inspections.
• Protect cables, the drainage pipe, electrical components, etc. from
rodents and insects; otherwise these might damage unprotected
components and this could result in fire.
• Do not allow cables to come into contact with the refrigerant pipes,
metal edges, printed circuit boards (PCB) or the electric components
inside the unit; the cables may be damaged and this could result in fire.
10.2 General VerifiCations
1 Make sure the electric components in the installation (earth
leakage breaker, circuit breaker, cables, connectors, cable
terminals and main power switches) have been selected
correctly in line with the electrical data given in this Manual.
Also make sure that these components are compliant with
national and local codes.
a. The electricity supply to the unit should be via an
exclusive power control switch and protective circuit
breaker, certified and installed in accordance with local or
national safety regulations.
b. Connect the power supply wiring for each group of indoor
units to its outdoor unit group (maximum capacity for each
47 PMML0479 rev.2 - 02/2018
C Drain pipes (field-supplied)
D Base of unit
Drain kit components
material/
model Description
colour
Drain boss PP/black
DBS-
Drain cap PP/black
TP10A
Rubber cap CR/black
Quantity
model standard type
8-18
20-36
38-40
42-48
50-54
56 - 60
62 - 66
DBS-TP10A
68 - 72
74 - 78
80 - 84
86 - 90
92 - 96
• Connecting the operating line cables incorrectly may lead to faults in
the PCB.
• Firmly secure the cables inside the indoor unit with plastic flanges.
!
D a n G e r
• Use an earth leakage breaker with medium sensitivity, and an
activation speed of 0.1 or less. If this is not fitted, there is a risk of
electric shock and/or fire.
• Install an earth leakage breaker, fuse and circuit breaker for each
outdoor unit power line. Not fitting it may cause an electric shock
or fire.
group of indoor units: 26 HP). Do not mix units of different
groups.
c. For heat recovery systems, the CH unit and the indoor
unit of the same refrigerant cycle can be supplied from the
same mains power switch.
2 Check that the supply voltage is between 90 and 110% of the
rated voltage. Where the voltage capacity is too low, it will not
be possible to start the system due to the drop in voltage.
3 Sometimes, the refrigeration/heating system is not able to
operate correctly in the following cases:
• When the system is supplied from the same supply line as
other major consumers (heavy machinery, power inverter
Qty application
Connecting for Drain
2
Piping
Embolization for Drain
2
Hole
Sealing for Boss and
4
Cap
High efficiency
Q´ty
type
5-14 1
16-24 2
26-32 3
34/36 4
38-42 3
44/46 4
48/50 5
52/54 6
56/ 58 5
60 6
62 7
64 - 72 8