5
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.
•
A circuit breaker capable of shutting down power supply to the
entire system must be installed.
•
This system consists of multiple indoor units. Mark each
indoor unit as unit A, unit B..., and be sure the terminal board
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.
Electrical characteristics
Model
Hz
Volts
Voltage range
FXYCP20~125
50
230
min.198-max.264
power supply
Fan motor
MCA
MFA
KW
FLA
FXYCP20
0.5
16A
0.010
0.4
FXYCP25•32
0.5
16A
0.015
0.4
FXYCP40•50
0.8
16A
0.020
0.6
FXYCP63
0.9
16A
0.030
0.7
FXYCP80
1.1
16A
0.050
0.9
FXYCP125
1.3
16A
0.085
1.0
MCA: Min. circuit Amps (A)
MFA: Max. Fuse Amps (A)
KW: Fan Motor Rated Output (kW)
FLA: Full Load Amps (A)
NOTE
•
For details, refer to "Electrical data".
Specifications for field supplied fuses and wire
Power supply wiring
Model
Field fuses
Wire
Size
FXYCP20~125
16A
H05VV-U3G
Local codes
Transmission wire
Model
Wire
Size
FXYCP20~125
Sheathed wire (2)
0.75-1.25mm
2
NOTE
•
For details, refer to the chapter "Wiring example".
•
Allowable length of transmission wiring between indoor
and outdoor units, and between the indoor unit and the
remote controller is as follows:
1 Outdoor unit - indoor unit: max. 1000m
(total wiring length: 2000m)
2 Indoor unit - remote controller: max 500m
WIRING EXAMPLE AND HOW TO SET THE
REMOTE CONTROLLER
How to connect wiring (see figure 11)
•
Power supply wiring
Remove the switch box lid (1) and connect the wires to the
power supply terminal board inside. While doing this, pull the
wires inside through the rubber bush A and clamp the wires
along with other wires using clamp A, untightening the clip of
clamp A by pressing. After the connection, tighten clamp A as
before.
•
Unit wiring and remote controller wiring
Remove the switch box lid (2) and pull the wires inside
through the rubber bush B and connect to the terminal board
for unit transmission wiring.
PRECAUTIONS (see figure 13)
1
Terminal board for unit transmission wirings
2
Clamp
3
Transmission wiring between units
4
Remote controller wiring
5
Power supply wiring
6
Field supplied wires
7
Power supply terminal board
8
Earth terminal (supplied with the unit)
1 Observe the notes mentioned below when wiring to the power
supply terminal board.
•
Do not connect wires of different gauge to the same power
supply terminal. (Looseness in the connection may cause
overheating.)
•
When connecting wires of the same gauge, connect them
according to the figure.
2 Keep total current of crossover wiring between indoor units
less than 12A. Branch the line outside the terminal board of
the unit in accordance with electrical equipment standards,
when using two power wiring of a gauge greater than 2mm
2
(Ø1.6).
The branch must be sheathed in order to provide an equal or
greater degree of insulation as power supply wiring itself.
3 Do not connect wires of different gauge to the same
grounding terminal. Looseness in the connection may
deteriorate the protection.
4 Remote controller cords and wires connecting the units
should be located at least 50mm away from power supply
wiring. Not following this guideline may result in malfunction
due to electrical noise.
5 For the remote controller wiring, refer to the "Installation
manual of the remote controller" supplied with the remote
controller.
6 Never connect the power supply wiring to the terminal board
for transmission wiring. This mistake could damage the entire
system.
7 Use only specified wires and tightly connect wires to the
terminals. Be careful that wires do not place external stress
on the terminals. Keep wiring in neat order so that they do not
obstruct other equipment such as popping open the service
cover. Make sure the cover closes tight. Incomplete
connections could result in overheating, and in the worse
case, electric shock or fire.
