22
English
‹Connecting methods of wiring between indoor and outdoor units, earth wiring, and remote controller
wiring›
• Detach the control box lid and pipe retainer as shown in the
Fig. 29
and connect the wires of matching
numbers to the terminal block (X2M: 3P) on the right side of the unit. Connect the earth wire to the earth
terminal. In doing this, draw the wiring into the unit through the hole for wiring, and fix it together with the
earth wire using the clamp (8).
• Connect the remote controller wiring (field supply) to the terminals P
1
and P
2
(no polarity) of the terminal
block (X1M: 4P), and guide the wiring to the outside of the unit using the route shown in the
Fig. 31
.
•
Pass the remote controller wiring inside the piping retainer plate.
•
Route the low voltage wires (remote controller wiring) 50mm or more away from the high voltage wires
(interconnecting wires between the indoor and outdoor units) and earth wire so that they may not pass
through the same place.
(Refer to Fig. 31)
• During the wiring work, lay the electric wiring neatly so that the wires may not push the control box lid up.
Also, fix the lid without sandwiching the wires between the box and the lid.
(Sandwiching electric wires and/or having the lid float up may result in electric shock or fire.)
• Pass the interconnecting wires and the earth wires inside of the pipe pressing plate. Wires connecting the
units and the earth wire to the pipe retainer. Keep the extra wires neatly at a location shown in the
Fig. 30
.
The wires may come in contact with other parts such as the fan, and the indoor unit may be damaged.
• In order to prevent small creatures getting into the unit, seal the wiring outlet with putty or heat insulating
material (field supply) leaving no clearance. (If small creatures, such as insects, get into the unit, the
creatures may cause short circuiting in the control box.)
CAUTION
Use a round crimp-style terminal for connection to the power supply terminal block.
(Refer to Fig. 32)
In case it cannot be used due to unavoidable reasons, be sure to observe the following instructions.
•
Do not connect wires of different gauge to the same power supply terminal.
(Looseness in the connection may cause overheating.)
(Refer to Fig. 33)
•
In wiring, make certain that prescribed wires are used. Also, fix the wires so that external force may not
be applied to the terminals.
•
Use an appropriate screwdriver to tighten the terminal screws. Small screwdrivers damage the head of
the screws and they cannot tighten the screws appropriately.
Terminal block
(X1M : 4P)
Terminal block
(X2M : 3P)
Route the low voltage wires through the right side of the
piping to the upper hole on the right (left) side plate.
Route the high voltage wires and earth wire through the left
side of the piping to the lower hole on the right (left) side
plate while installing the provided bushing (4).
Low voltage wires
High voltage wires
and earth wire
Fig. 31
3PEN486970-1D.book Page 22 Monday, July 24, 2017 8:54 AM
