Hitachi SET FREE Serie Manual De Instrucciones página 61

ELECTRIC WIRING
Electrical box
(1) Terminal block
for power source
(5) Power source wiring
outlet (rubber bush)
Fix the control
wiring using a
clamp
Control wiring
Power source
wiring
Cord clamp (for
fixing power
source wiring)
Cord clamp (accessory)
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Fix by accessory screw (for fixing
control wiring)
(3) Details of bottom base wiring outlet
For power source wiring
(Ø65 knockout hole)
For transmission wiring
(Ø55 knockout hole)
For control wiring
(Ø33 knockout hole)
(4) Details of wiring outlets inside the electrical box (rubber bush section)
Rubber bush (wiring outlet)
Correct
Rubber bush
Electrical box
(metal)
Connect the three-phase power cables on terminals L1, L2, L3 and N of the TB1 terminal board and connect the earth wire to the
screw-in terminal. Use insulated terminals or heat-shrink covers.
Connect the communication cables on the terminals of the TB2 -C- of the PCB1:
• From the indoor units to the outdoor unit: terminals 1 and 2.
• From the outdoor unit to the next outdoor unit in the same refrigerant cycle: terminals 3 and 4:
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Completely seal the entrance to the duct using sealant, etc. to prevent water from entering.
51 PMML0479 rev.2 - 02/2018
(5) Transmission wiring
outlet (rubber bush)
Printed circuit board
(PCB1)
(2) Terminal block
for control circuit
(2) Detail of terminal block for control circuit
(5) Control wiring outlet
(rubber bush)
Ground connection for
"shielded twist pair cable"
(*) This terminal is used only for combination of outdoor units
(FSXNSE: 26-96HP, FSXNPE: 20-72HP) and not used for single units
(FSXNSE: 8-24HP, FSXNPE: 5-18HP.)
(Unit: mm)
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• Install accessory rubber
bushes to the wiring outlets.
• Seal hermetically the end of
conduit pipe by using putty,
etc. (for water protection)
(*) Using a cutter knife, cut an X in the
rubber bush on site as shown below
Incorrect
Make sure that the rubber bush is
in place
(1) Detail of electrical box terminal
Screw (M5 or M6)
Attach insulation
sleeve
Rubber bush
Screw (M3.5) PCB1
Make sure that the power source wiring passes through the
center of the rubber bush
Correct
(*)
Rubber bush
Rubber bush
If the power source wiring does not pass through properly, snow or
water may enter in the unit
400 V / 50 Hz
Terminal block for power
source (TB1)
Earth terminal
(connect securely
cable)
Earth wire
Cable clamp
(accessory)
Terminal block for control circuit
Outdoor to outdoor terminal (*)
(Communication wiring between
outdoor units used in combination)
H-LINK terminal (Communication wiring
between the outdoor unit and indoor
unit, or between the outdoor unit and
outdoor unit of other refrigerant system)
Incorrect
Snow or water
may enter