FCQ35~14 FCQH71~140C7VEB
Split System air conditioners
4PW31577-1B
Installation manual
6
-
Confirm the drain operation looking at the drain socket.
-
After checking the drainage flow, turn off power, remove
the control box lid and disconnect the single phase power
supply from the inter unit wiring terminal block again.
Attach the control box lid as before.
E
LECTRIC
WIRING
WORK
General instructions
■
All field supplied parts and materials and electric works must
conform to local codes.
■
Use copper wire only.
■
Follow the 'Wiring diagram' attached to the unit body to wire the
outdoor unit, indoor units and the remote controller. For details
on hooking up the remote controller, refer to the "Installation
manual of the remote controller".
■
All wiring must be performed by an authorized electrician.
■
A main switch or other means for disconnection, having a
contact separation in all poles, must be incorporated in the fixed
wiring in accordance with relevant local and national legislation.
Note that the operation will restart automatically if the main
power supply is turned off and then turned back on again.
■
Refer to the installation manual attached to the outdoor unit for
the size of power supply electric wire connected to the outdoor
unit, the capacity of the earth leakage circuit breaker and fuse,
and wiring instructions.
■
Be sure to ground the air conditioner.
■
Do not connect the ground wire to:
-
gas pipes: might cause explosions or fire if gas leaks.
-
telephone ground wires or lightning rods: might cause
abnormally high electric potential in the ground during
lightning storms.
-
plumbing pipes: no grounding effect if hard vinyl piping is
used.
Electrical characteristics
Specifications for field wire
W
IRING
EXAMPLE
AND
HOW
TO
SET
THE
REMOTE
CONTROLLER
How to connect wiring
(See figure 10)
■
Inter unit wiring
Remove the control box lid (1) and connect the inter unit wiring
terminal block inside with the matching numbers and connect
the ground wire to the grounding terminal. While doing this, pull
the wires inside through the hole in the casing and clamp the
wires along with other wires using a clamp as indicated in the
figure.
■
Remote controller wiring
Remove the control box lid (1) and pull the wires inside through
the hole in the casing and connect to the remote controller
wiring terminal block. Securely fix the wiring using a clamp as
indicated in the figure.
■
After connection
Attach the small sealing (supplied with the unit) around the
cables to prevent infiltrating of water from the outside into the
unit. If two or more cables are used, divide the small sealing into
the required number of pieces and wrap them around all the
cables.
■
Attach the control box lid
Precautions
1
Observe the notes mentioned below when wiring to the power
supply terminal board.
-
Use a round crimp-style terminal for insulation sleeve for
connection to the terminal block for wiring the units. When
none are available, follow the instructions below.
-
Do not connect wires of different gauge to the same power
supply terminal. (Looseness in the connection may cause
overheating.)
-
When clamping wiring, use the clamps (delivered with the
unit) to prevent outside pressure being exerted on the wiring
connections. Tie up firmly. When doing the wiring, make sure
the wiring is neat and does not cause the control box to stick
up. Close the cover firmly.
1
Control box lid
2
Inter unit wiring
3
Earth cable
4
Inter unit wiring terminal block
5
Clamp
6
Transmission wiring
7
Terminal board for transmission wiring
8
Opening for cables
9
Wiring diagram label
(on the back side of the control box lid)
10
Remote controller wiring
Inter unit wiring terminal block (4)
NOTE
For details, refer to "Electrical data".
1
2
Wire
Size (mm
2
)
Length
Between
indoor units
H05VV-U4G
(1),(2)
(1) Shows only in case of protected pipes. Use H07RN-F in case of no protection.
(2) Run transmission wiring between the indoor and outdoor units through a conduit
to protect against external forces, and feed the conduit through the wall together
with refrigerant piping.
2,5
—
Unit-Remote
controller
Sheathed wire
(2 wire)
(3)
(3) Use double insulation wire for remote controller (sheath thickness:
≥
1 mm) or run
wires through a wall or conduit so that the user cannot come in contact with them.
0.75-1.25
≤
500 m
(4)
(4) This length is the total maximum extended length in the system in case of group
control.
1
Control box lid
2
Inter unit wiring
3
Earth cable
4
Inter unit wiring terminal block
5
Clamp (field supply)
6
Remote controller wiring
7
Remote controller wiring terminal block
8
Opening for cables
9
Wiring diagram label (on the back side of the control box lid)
1
2
3
1
Round crimp-style terminal
2
Attach insulation sleeve
3
Wiring
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