Warning:
•
Be sure to use specified wires for connections and ensure no external force is imparted to terminal connections. If connections are not fixed firmly, heat-
ing or fire may result.
•
Be sure to use the appropriate type of overcurrent protection switch. Note that generated overcurrent may include some amount of direct current.
Caution:
•
Some installation sites may require attachment of an earth leakage breaker for the inverter. If no earth leakage breaker is installed, there is a danger of
electric shock.
•
Do not use anything other than the correct capacity breaker and fuse. Using fuse, wire or copper wire with too large capacity may cause a risk of malfunc-
tion or fire.
Notes:
•
This device is intended for the connection to a power supply system with a maximum permissible system impedance (Refer to IEC61000-3-3.) at the inter-
face point (power service box) of the user's supply.
•
The user must ensure that this device is connected only to a power supply system which fulfils the requirement above.
If necessary, the user can ask the public power supply company for the system impedance at the interface point.
•
Backup operation
Even when the electrical work has not been completed, the fan and the drain pump can be operated by connecting the jumper (SWE) on the control board to the ON-
side and energizing the terminal block.
SWE
SWE
OFF
ON
OFF
ON
Reconnect the SWE on the control board to the OFF-side upon completion of all work.
9.2. Connecting remote controller, indoor
and outdoor transmission cables
(Remote contoroller is optionally available.)
•
Connect indoor unit TB5 and outdoor unit TB3. (Non-polarized 2-wire)
The "S" on indoor unit TB5 is a shielding wire connection. For �������
about the connecting cables, refer to the outdoor unit installation manual.
•
Install a remote controller following the manual supplied with the remote con-
troller.
•
Connect the "1" and "2" on indoor unit TB15 to a MA remote controller. (Non-
polarized 2-wire)
•
Connect the "M1" and "M2" on indoor unit TB5 to a M-NET remote controller.
(Non-polarized 2-wire)
•
Connect the remote controller's transmission cable within 10 m [32 ft] using a
0.75 mm
2
[AWG18] core cable. If the distance is more than 10 m [32 ft], use
a 1.25 mm
[AWG16] junction cable.
2
[Fig. 9.2.1] (P.5) MA Remote controller
[Fig. 9.2.2] (P.5) M-NET Remote controller
A Terminal block for indoor transmission cable
B Terminal block for outdoor transmission cable
C Remote controller
•
DC 10 to 13 V between 1 and 2 (MA remote controller)
•
DC 24 to 30 V between M1 and M2 (M-NET remote controller)
[Fig. 9.2.3] (P.5) MA Remote controller
[Fig. 9.2.4] (P.5) M-NET Remote controller
A Non-polarized
C Remote Controller
•
Wind the transmission and remote controller wires around the clamp once to
keep them from being pulled out.
•
The MA remote controller and the M-NET remote controller cannot be used
at the same time or interchangeably.
Note:
Ensure that the wiring is not pinched when fitting the terminal box cover.
Pinching the wiring may cut it.
Caution:
Install wiring so that it is not tight and under tension. Wiring under tension
may break, or overheat and burn.
•
Fix power source wiring to control box by using buffer bushing for tensile
force. (PG connection or the like.) Connect transmission wiring to transmis-
sion terminal block through the knockout hole of control box using ordinary
bushing.
•
After wiring is complete, make sure again that there is no slack on the con-
nections, and attach the cover onto the control box in the reverse order re-
moval.
B Upper level (TB15)
D Lower level (TB5)
9.3. Connecting electrical connections
Verify that the model name on the operating instructions on the cover of the con-
trol box is the same as the model name on the nameplate.
1. Remove the screws holding the terminal box cover in place.
[Fig. 9.3.1] (P.5)
A Screws (2 screws)
C Control box cover
2. Open knockout holes
Caution:
Install wiring so that it is not tight and under tension. Wiring under tension
may break, or overheat and burn.
3. Fix power source wiring to control box by using buffer bushing for
tensile force. (PG connection or the like.) Connect transmission wiring to
transmission terminal block through the knockout hole of control box using
ordinary bushing.
[Fig. 9.3.2] (P.5)
A Knockout hole
B To prevent external tensile force from applying to the wiring connection sec-
tion of power source terminal block use buffer bushing like PG connection or
the like.
C Power source wiring
E Use ordinary bushing
G Conduit
4. Connect the power source, Earth, transmission and remote controller wiring.
[Shield wire connection]
[Fig. 9.3.3] (P.5)
A Terminal block
C Shield wire
D The earth wire from two cables is connected together to the S terminal.
(Dead-end connection)
E Insulation tape (To keep the earth wire of the shielded cable from coming in
contact with the transmission terminal)
5. After wiring is complete, make sure again that there is no slack on the
connections, and attach the cover onto the control box in the reverse order
removal.
Caution:
Wire the power supply so that no tension is imparted. Otherwise discon-
nection, heating or fire result.
Notes:
•
Do not pinch the cables or wires when attaching the terminal bed box
cover. Doing so may cause a risk of disconnection.
•
When accommodating the terminal bed box, make sure that the con-
nectors on the box side are not removed. If removed, it cannot operate
normally.
B Terminal box cover
D Tensile force
F Transmission wiring
B Round terminal
13