Installation and operation manual
7
Electric 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.
Attach the earth leakage circuit breaker and fuse to the power supply
line.
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.
This system consists of multiple indoor units. Mark each indoor unit as
unit A, unit B..., and be sure the terminal block wiring to the outdoor unit
and BS unit are properly matched. If wiring and piping between the
outdoor unit and an indoor unit are mismatched, the system may cause
a malfunction.
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
MCA: Min. circuit Amps (A)
MFA: Max. Fuse Amps (A)
KW: Fan Motor Rated Output (kW)
FLA: Full Load Amps (A)
Specifications for field supplied fuses and wire
Wiring example and how to set the remote
controller
How to connect wiring
(See figure 10)
Power supply wiring
Remove the control box lid (1) and connect the wires to the power
supply terminal block inside (L, N) 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.
Unit transmission wiring and remote controller wiring
Remove the control box lid (1) and pull the wires inside through the hole
in the casing and connect to the terminal block for unit transmission
wiring (F1, F2) and remote controller wiring (P1, P2). 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 block.
-
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.
-
When connecting wires of the same gauge, connect them according
to the figure.
Use the specified electric wire. Connect the wire securely to the terminal.
Lock the wire down without applying excessive force to the terminal. Use
torques according to the table below.
-
When attaching the control box lid, make sure not to pinch any
wires.
-
After all wiring connections are done, fill in any gaps in the casing
wiring holes with putty or insulation material (field supply) thus to
prevent small animals or dirt from entering the unit from outside and
causing short circuits in the control box.
Model
Hz
Volts
Voltage range
FXFQ20~125
50 / 60
220-240 / 220
min. 198-max. 264 /
min. 198-max. 242
power supply
Fan motor
Model
MCA
MFA
KW
FLA
FXFQ20~32
0.4
16 A
0.056
0.3
FXFQ40
0.5
16 A
0.056
0.4
FXFQ50
0.6
16 A
0.056
0.5
FXFQ63
0.9
16 A
0.056
0.7
FXFQ80
0.9
16 A
0.120
0.7
FXFQ100
1.4
16 A
0.120
1.1
FXFQ125
1.9
16 A
0.120
1.5
NOTE
For details, refer to "Electrical data".
Power supply wiring
Model
Field fuses
Wire
Size
FXFQ20~125
16 A
H05VV-U3G
Local codes
Transmission wiring
Model
Wire
Size
FXFQ20~125
Sheathed wire (2)
0.75-1.25 mm
2
NOTE
For details, refer to
"Wiring example" on page 8
.
Allowable length of transmission wiring between
indoor and outdoor units, and between the indoor
unit and the remote controller is as follows:
•
Outdoor unit - indoor unit: max. 1000 m
(total wiring length: 2000 m)
•
Indoor unit - remote controller: max 500 m
Tightening torque (N•m)
Terminal block for unit transmission and
remote controller
0.79~0.97
Terminal block for power supply
1.18~1.44
1
2
3
1
Round crimp-style terminal
2
Attach insulation sleeve
3
Wiring
EN3P320142-1F.book Page 7 Tuesday, October 3, 2017 2:46 PM
