En-17
WARNING
Use ring terminals and tighten the terminal screws to the
specified torques, otherwise, abnormal overheating may be
produced and possibly cause heavy damage inside the unit.
Table 1
Tightening torque
M4 screw
1.2 to 1.8 N·m (11 to 16 lbf·in)
9.1. INDOOR UNIT SIDE
(1) Remove the control box cover from the control box.
Screw
Control box cover
Remove the 4 screws
and remove the control
box cover from the
control box.
(2) Cable connection
• Connect the connection cable to the terminal board.
• Connect the remote controller cable to the terminal board.
• Fix the remote controller cable to the control box cover
with a nylon clamp.
Binder (Medium)
(Accessories)
Remote control cable
Power supply cable
Conduit
(Field supply)
(3) Wiring system diagram
INDOOR UNIT SIDE
INDOOR UNIT
DISCONNECT
SWITCH
(Field supply)
OUTDOOR UNIT
or BRANCH BOX
TERMINAL
Grounding
line
14AWG
(Inter-unit)
Power lines
208/230 V
208/230 V
208/230 V
Remote controller line
Disconnect Switch - Field supplied if required by local code.
Select the correct capacity of disconnect switch according to
the load.
CAUTION
Tighten the indoor unit connection cable and power
supply indoor and outdoor unit, branch box terminal
board connections firmly with the terminal board screws.
Faulty connection may cause a fire.
If the indoor unit connection cable and power supply are
wired incorrectly, the air conditioner may be damaged.
Connect the indoor unit connection cable by matching
the numbers of the outdoor, branch box and indoor units
terminal board numbers as shown in terminal label.
Ground both the indoor and outdoor, branch box units by
attaching a ground cable.
Unit shall be grounded in compliance with the applicable
local and national rules.
WARNING
Disconnect switch for over current protection given in
the system diagram is to be installed between the indoor
unit and the outdoor unit, branch box.
CAUTION
Be sure to refer to the above diagram for do correct field
wiring. Wrong wiring causes malfunction of the unit.
Check local electrical rules and also any specific wiring
instructions or limitation.
Remote control cable
1: Red
2: White
3: Black
GND
Conduit
(Field supply)
φ22.2 mm
(7/8 in.)
Conduit
(Field supply)
Binder (Medium)
(Accessories)
Power supply cable