8
English
9. INSTALLING THE DUCT
Air outlet side
•
Connect the duct according to the air inside of the outlet-side
flange.
•
Wrap the outlet-side flange and the duct connection area
with aluminum tape or something similar to prevent air
escaping.
CAUTION
•
Be sure to insulate the duct to prevent condensation from
forming. (Material: glass wool or polyethylene foam, 25 mm
thick)
•
Use electric insulation between the duct and the wall when
using metal ducts to pass metal laths of the net or fence
shape or metal plating into wooden buildings.
•
Be sure to explain about the way of maintaining and cleaning
local procurements (air filter, grille (both air outlet and suction
grille), etc.) to your customer.
10. ELECTRIC WIRING WORK
10-1 GENERAL INSTRUCTIONS
•
Shut off the power before doing any work.
•
All field supplied parts and materials, electric works must
conform to local codes.
•
Use copper wire only.
•
See also the “Wiring Diagram plate” attached to the control
box lid when laying electrical wiring.
•
For details on hooking up the remote controller, refer to the
“REMOTE CONTROLLER INSTALLATION MANUAL”.
•
All wiring must be performed by an authorized electrician.
•
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.
•
A circuit breaker capable of shutting down power supply to
the entire system must be installed.
•
Refer to the installation manual attached to the outdoor unit
for the size of power supply wiring connected to the outdoor
unit, the capacity of the circuit breaker and switch, and wiring
instructions.
•
Be sure to ground the air conditioner.
•
Do not allow the earth wire to come in contact with gas pipes,
water pipes, lightning rods, or telephone earth wires.
•
Gas pipes: gas leaks can cause explosions and fire.
•
Water pipes: they cannot be grounded if hard vinyl pipes
are used.
•
Telephone earth wire and lightning rods: the ground
potential when struck by lightning gets extremely high.
•
To avoid short circuiting the power supply wire, be sure to
use insulated terminals.
•
Do not turn on the power supply (circuit breaker or earth leak-
age breaker) until all other work is done.
10-2 SPECIFICATIONS FOR FIELD SUPPLIED FUSES
AND WIRE
Power-related
NOTES
1. Shows only in case of protected pipes. Use H07RN-F in
case of no protection.
2. Insulated thickness : 1mm or more.
3. If the wiring is in a place where there are people it can be
easily touched by people, install an earth leakage breaker to
prevent electric shock.
4. When using an earth leakage breaker, make sure to select
one useful also for protection against overcurrent and short-
circuit.
When using an earth leakage breaker only for earth device,
make sure to use a wiring interrupter together.
•
The length of the transmission wiring and remote controller
wiring are as follows.
Length of the transmission wiring and remote controller wiring
10-3 ELECTRICAL CHARACTERISTICS
MCA: Minimum Circuit Amps (A) MFA:Max. Fuse Amps (A)
KW: Fan motor output (kW)
FLA:Full Load Amps (A)
Insulation material
Aluminum tape
Flange
(Field supply)
(Field supply)
Outlet side
Air inlet side
Main unit
Model
Power supply wiring (including earth wire)
Number
of units
Field
fuses
Wire
Size
20 · 25 · 32 type
1
16 A
H05VV-U3G
(NOTE 1)
Size must
comply with
local codes.
40 · 50 type
63 type
Model
Transmission wiring
Remote controller wiring
Wire
Size (mm
2
)
20 · 25 · 32 type
Sheathed vinyl cord
or cable (2 wires) (NOTE 2)
0.75 - 1.25
40 · 50 type
63 type
Outdoor unit – Indoor unit
Max. 1000m
(Total wiring length: 2000m)
Indoor unit – Remote controller
Max. 500m
Units
Power supply
Fan motor
Model
Hz Volts
Voltage
range
MCA
MFA
KW
FLA
20 · 25 · 32
50
220-
240
Min.
198
Max.
264
0.4
16
0.068
0.3
40
0.5
0.075
0.4
50
0.5
0.096
0.4
63
0.6
0.107
0.5
20 · 25 · 32
60
220
Min.
198
Max.
242
0.5
16
0.068
0.4
40
0.6
0.075
0.5
50
0.6
0.096
0.5
63
0.7
0.107
0.6
