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Switches and connectors on the circuit board
Remove the 4 screws to detach the cover.
* Refer to "Advanced system" for how to set the switch.
(VNK type only)
127-EN
Changeover switch for
pulse / static
ON
SW701 (No.1)
Pulse: ON
Static: OFF
OFF
SW701
Connectors for the external input
Connect the remote ON/OFF adapter
(NRB-1HE: sold separately)
CN705(5P)
No voltage a-contact input
(Operation remote controller
valid / invalid, fan speed High
/ Low)
CN706(2P)
Voltage of DC12 V or 24 V
(ON/OFF)
Wiring connection
NOTE
• When performing transition wiring for the remote controllers, polarity is not needed to be considered when connecting
wires to the terminal A and B on the indoor unit terminal block.
• Leave an extra length of 100 mm for each wiring so that servicing can be performed more easily.
• Low voltage circuit is applied for the remote controller.
Perform wiring so that each wire corresponds with the proper terminal number; otherwise, an electrical fault may
occur.
Wiring in the electrical control box of the indoor unit
Fix the wires using a cord clamp. Do not stretch them tight for wiring.
Wiring the indoor unit
Connect the wire matching the terminal numbers.
Incorrect connection causes a trouble.
R
S
(L)
(N)
Earth wire
Power supply
wire
– 64 –
Communication wire terminal block
Wiring between indoor and outdoor unit (U1, U2)
Wiring for the remote controller (A, B)
External output terminal block
Operation output
Common
External damper output (3-4)
Abnormal / Bypass mode output (3-5)
Humidistat terminal block (VNK type only)
Earth screw
Power supply terminal block (R (L), S (N))
Cord clamp
Wiring for the
remote controller
Wiring between
indoor and outdoor
unit
Earth Screw
128-EN
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