20
Multi Type Ceiling Duct Air Conditioner
Checking the Drainage and Forming the Piping
2) Connection of the cable
1. Remove the cover control from the unit by
loosening the screw.
Connect the wires to the terminals on the
control board individually as the following.
2. Secure the cable onto the control board with
the holder (clamper).
3. Reflix the cover control to the original position
with the screw.
4. Use a recongnized circuit breaker between the
power source and the unit. A disconnection
device to a adequately disconnect all supply
lines must be fitted.
CAUTION: The power cord connected to the outdoor unit
should be complied with the following specifications
(Rubber insulation, type H05RN-F approved by HAR or SAA).
The connecting cable connected to the indoor and outdoor
unit should be complied with the following specifications
(Rubber insulation, type H07RN-F approved by HAR or SAA).
Control terminal
Control terminal
board
Control terminal
board
Main terminal
Main terminal
board
Main terminal
board
Cover control
Outdoor Unit
NORMAL
CROSS-SECTIONAL
AREA 2.5mm
2
ø
8.5mm
GN/YL
20mm
NORMAL
CROSS-SECTIONAL
AREA 0.75mm
2
ø
7.5mm
GN/YL
20mm
NORMAL
CROSS-SECTIONAL AREA
18K: 1.5mm
2
L2-C366**
OTHER MODELS
ø
7.5mm
GN/YL
20mm
Terminal on the OUTDOOR UNIT
Terminal on the OUTDOOR UNIT
1(L) 2(N) 3(N)
Power cord
1(L)
2(N)
Terminal on the INDOOR UNIT
A-UNIT
3(L) 4(N)
5
6
7
Terminal on the INDOOR UNIT
B-UNIT
3(L) 4(N)
5
6
7
4(N)
5(A)
5(B)
Terminal on the INDOOR UNIT
A-UNIT
3(L) 4(N)
5
6
7
Terminal on the INDOOR UNIT
B-UNIT
3(L) 4(N)
5
6
7
3(L) 4(N)
5
3(L) 4(N)
5
Power cord
■
36K Btu/h
■
48K Btu/h
CAUTION: After the confirmation of the above conditions, prepare the wiring as follows:
1) Never fail to have an individual power specialized for the air conditioner. As for the method of wiring,
be guided by the circuit diagram pasted on the inside of control box cover.
2) Provide a circuit breaker switch between power source and the unit.
3) The screw which fasten the wiring in the casing of electrical fittings are liable to come loose from
vibrations to which the unit is subjected during the course of transportation. Check them and make
sure that they are all tightly fastened. (If they are loose, it could give rise to burn-out of the wires.)
4) Specification of power source
5) Confirm that electrical capacity is sufficient.
6) Be sure that the starting voltage is maintained at more than 90 percent of the rated voltage marked
on the name plate.
7) Confirm that the cable thickness is as specified in the power sources specification.
(Particularly note the relation between cable length and thickness.)
8) Never fail to equip a leakage breaker where it is wet or moist.
9) The following troubles would be caused by voltage drop-down.
• Vibration of a magnetic switch, damage on the contact point there of, fuse breaking, disturbance to the
normal function of a overload protection device.
• Proper starting power is not given to the compressor.
