Hitachi ECO COMPACT Manual De Instrucciones página 11

Electrical Wiring
• When Using Junction Box
i. Prepare the optional field-supplied Implanted
Junction Box.
ii. Feed the cable through the conduit tubing in the wall.
iii. Connect the accessory cable to the field-supplied
cable by soldering. Insulate the connecting part with
tape.
(G)
3 ELECTRICAL WIRING
!
D A N G E R
Always make sure to turn off the power of the indoor unit when performing electrical wiring work. Performing electrical wiring work with the
power turned on can damage the circuit boards of the indoor unit and the remote control switch.
Wiring Example:
Controller
CN1
?
N O T E
• Communication cabling must be a minimum 0.75 mm
and routing in areas of high electronic interference (EMI) and other sources of potentially excessive electrical noise to reduce the potential
for communication errors. When shielded cabling is applied, proper bonding and termination of the cable shield is required as per Johnson
Controls-Hitachi Air Conditioning guidelines. Plenum and riser ratings for communication cables must be considered per application and local code
requirements. The use of any other grade of cable other than that specified above can result in damage from EMI.
• Keep a clearance of more than 30 cm between the transmission line (remote control switch cable and transmission wires) and the power source of
indoor units. Otherwise, the air-conditioner may not operate properly or malfunction may occur due to the effect of power source noise.
• Refer to the documentation provided with each unit when performing electrical wiring work between the remote control switch and indoor units, for
the proper setting of refrigerant cycle number and indoor unit address.
• No gap shall exist between the remote control switch cable and the hole of the remote control switch case. If there is a gap, cover the gap with vinyl
tape. Otherwise, malfunction may occur due to the entrance of water droplets or insects.
• In case of operating with two remote control switches (Primary and Secondary), set the primary and secondary remote control switches by selecting
the appropriate function with the remote control switches following the contents of Function selection and setting chapter. Upon completion of
settings, turn off the power supply of all the indoor unit connected to the remote control switches.
9 PMML0526 rev.0 - 06/2022 - A12109690A
(vii)
Max. 16 Indoor units
Electrical box of indoor unit
Terminal board
A
B
M3.5
screws
Use 0.75mm cable, 2-Conductor, Stranded Copper
2
, 2-Conductor, Stranded Copper. Shielded cable must be considered for applications
2
iv. Secure the holding bracket to the junction box with
M4 screws.
3 Attach the controller body to the mounted holding bracket.
Be careful not to pinch the cable when attaching it.
4 After installation, peel away the protective film from the LCD
screen. (viii)
Electrical box of indoor unit
Terminal board
A
B
M3.5
screws
Controller
(Secondary)
CN1