8
English
8. INSTALLING THE DUCT
Connect the duct supplied in the field.
Air inlet side
•
Attach the duct and intake-side flange (field supply).
•
Connect the flange to the main unit with accessory screws (in
20 or 24 positions).
•
Wrap the intake-side flange and duct connection area with
aluminum tape or something similar to prevent air escaping.
CAUTION
When attaching a duct to the intake side, be sure to attach an air filter
inside the air passage on the intake side. (Use an air filter whose dust
collecting efficiency is at least 50% in a gravimetric technique.)
The included filter is not used when the intake duct is attached.
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.
9. ELECTRIC WIRING WORK
9-1 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.
•
Install a wiring interrupter or ground-fault circuit interrupter
for the power wiring.
•
Make sure the earth resistance is no greater than 100
Ù
.
•
Do not the earth wire should 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 (wiring interrupter or ground-
fault circuit interrupter) until all other work is done.
9-2 LIST OF STANDARD WIRING EQUIPMENT
Power-related
NOTES
1. If the wiring is in a place where people it can be easily
touched by people, install a ground-fault circuit interrupter to
prevent electric shock.
2. When using a ground-fault circuit interrupter, make sure to
select one useful also to protection against overcurrent and
short-circuit.
When using a ground-fault circuit interrupter 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
9-3 ELECTRICAL CHARACTERISTICS
MCA: Minimum Circuit Amps (A) MFA:Max. Fuse Amps (A)
KW: Fan motor output (kW)
FLA:Full Load Amps (A)
Connection screw (7)
(accessory)
(Field supply)
(Field supply)
(Field supply)
(Field supply)
Flange
Flange
Aluminum tape
Aluminum tape
Main unit
Insulation
material
Air inlet side
Air outlet side
Model
Power supply wiring (including earth wire)
Number
of units
Field
fuses
Wire
Size
20 · 25 · 32 · 40 type
1
15A
H05VV-U3G
Follow local
standards.
50 type
63 type
Model
Transmission wiring
Remote controller wiring
Wire
Size (mm
2
)
20 · 25 · 32 · 40 type
Sheathed vinyl cord
or cable
0.75 - 1.25
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 type
50
220-
240
Min.
198
Max.
264
0.9
15
0.062
0.7
40 type
1.0
0.062
0.8
50 type
1.0
0.13
0.8
63 type
1.1
0.13
0.9
20 · 25 · 32 type
60
220
Min.
198
Max.
242
1.0
15
0.062
0.8
40 type
1.1
0.062
0.9
50 type
1.3
0.13
1.0
63 type
1.4
0.13
1.1
01_EN_3PN06588-2C.fm Page 8 Tuesday, November 29, 2005 2:25 PM
