Hitachi SET FREE Serie Manual De Instalación Y Funcionamiento página 76

Electrical wiring
Shielded twist
pair cable for
indoor unit to
outdoor unit
Fix by cord
clamp
Holes for power
source cable
at front and back of
unit (∅52)
C A U T I O N
Be sure to note the following points to run the cables under the
unit using conduit tube. (The pipe cover needs to be removed
before performing piping and wiring works.)
N O T E
• Do not run the power supply wiring and transmission wiring
through the same conduit tube. Moreover, keep at least 5cm
between the power supply wiring and transmission wiring.
• Pull out each wiring from each corresponding knockout hole.
Cut can "X" in rubber bush (accessory) and securely attach it
to the knockout hole for cable protection. Check that the rub-
ber bush is surely attached.
• Attach the pipe cover to prevent rats or other small animals
from entering the unit.
• Prevent the wirings from touching or rub against the refriger-
ant pipes, plate edges and electrical parts inside the unit.
• When the power source cable (cabtyre cable) whose size ex-
ceeds 38mm2 is used, peel the sheath part of the cable put
into the unit and run it. At this time, do not damage the coated
insulating coated part.
• Completely seal the end of conduit tube with sealing materials
to prevent the rain from entering the conduit tube.
• Make a drain hole at the lowest part of the conduit tube.
62
PMML0294A_rev.2_02-2014.indb 62
PCB1
for IU to OU for OU to OU
TB2
1 2 3 4
Harness lifter
Earth wire
Shielded twist pair cable
between outdoor units
transmission
PCB1
TB2
TB1
Holes for power source cable at
front and back of unit (∅52)
Cord clamp (for fixing
Holes for control cable at front and
power source cable)
back of unit (∅52)
PMML0294A rev.2 - 07/2014
Terminal board for power source cable (TB1)
R S T Mp
L1 L2 L3 N
Earth terminal
TB1
(connect securely
cable)
Electrical box
Earth wire
Hardness lifter
Fix 2 portions of
control cable
Terminal board for power
source cable (TB1)
Power source cable
Cord clamp (accessory)
Fix by accessory screw
Control cable
C A U T I O N
Tightly secure the power source wiring using a cord clamp inside
the unit.
N O T E
Fix the rubber bushes with adhesive when conduit tubes to the
outdoor unit are not used.
Liquid piping
Gas piping
(high/low pressure)
Gas piping
(low pressure)
Packing
Pipe cover
400V/50Hz
R S T Mp
L1 L2 L3 N
Attach insulation
sleeve
Cord band
For power source cable (∅52)
(knockout hole)
N O T E
Seal hermetically the entry of
conduit pipe by using putty,
etc. (for water protection)
For control cable (∅26)
(knockout hole)
For power source cable (∅65)
(knockout hole)
N O T E
Seal hermetically the entry
of conduit pipe by using
putty, etc. (for water
protection)
For control cable (∅33)
(knockout hole)
Transmission wiring
Power supply wiring
Seal
Rubber bush
Seal Conduit tube
Seal
Rubber bush
14/07/2014 12:28:35