6
6. Electrical work
Fig. 5-1
Fig. 6-1
5. Drainage piping work
A
B
C
5.1. Drainage piping work (Fig. 5-1)
• Drain pipes should have an inclination of 1/100 or more.
• For extension of the drain pipe, use a soft hose (inner dia. 15 mm) available on the
market or hard vinyl chloride pipe (VP-20). Make sure that there is no water leak-
age from the connections.
• If the drain pipe passes indoors it must be covered with insulating material (foamed
polyethylene: specific gravity: 0.03, thickness: 9 mm or more) available on the market.
• Do not put the drain piping directly in a drainage ditch where sulphuric gas may be
generated.
• When piping has been completed, check that water flows from the end of the drain
pipe.
A
Drain connection socket
C
Indoor unit’s drain hose
B
On site drain pipe (VP-20)
Caution:
The drain pipe should be installed according to this Installation Manual to en-
sure correct drainage. Thermal insulation of the drain pipes is necessary to
prevent condensation. If the drain pipes are not properly installed and insu-
lated, condensation may drip on the ceiling, floor or other possessions.
Preparing left and left rear piping (Fig. 5-2)
1
Remove the drain cap.
• Remove the drain cap by holding the bit that sticks out at the end of the pipe and
pulling.
A
Drain cap
2
Remove the drain hose.
• Remove the drain hose by holding on to the base of the hose
a
(shown by arrow)
and pulling towards yourself
b
.
3
Insert the drain cap.
• Insert a screwdriver etc into the hole at the end of the pipe and be sure to push to
the base of the drain cap.
4
Insert the drain hose.
• Push the drain hose until it is at the base of the drain box connection outlet.
• Please make sure the drain hose hook is fastened properly over the extruding drain
box connection outlet.
B
Hooks
Remove the side panel of the indoor unit on the drain side. Pour water in the drain
pan and check that it comes out the drain pipe end. After confirmation, reinstall the
side panel.
A
a
b
A
A
B
1
3
2
4
Fig. 5-2
6.1. Indoor unit (Fig. 6-1)
1. Remove the corner box.
2. Install each wire into the unit.
3. Open the front grill, remove 1 tapping screw and remove the terminal block cover.
A
Terminal block cover
4. Connect each wire properly to the terminal block.
• In consideration of future servicing, please leave some leeway for the wiring length.
5. Put all the parts back the way they were.
6. Use a clamp from the bottom of the electric parts box to fasten each wire.
B
Terminal block for Indoor/outdoor connecting
C
Terminal block for heater (PKH models)
D
Earth point
E
Clamp
B
C
D
E
N
L
S2
S3
S1
A
Indoor unit model
Indoor unit power supply (Heater)
Indoor unit input capacity (Heater)
*1
Main switch (Breaker)
Indoor unit power supply (Heater)
Indoor unit power supply (Heater) earth
Indoor unit-Outdoor unit
Indoor unit-Outdoor unit earth
Remote controller-Indoor unit
*2
Indoor unit (Heater) L-N
*3
Indoor unit-Outdoor unit S1-S2
*3
Indoor unit-Outdoor unit S2-S3
*3
Remote controller-Indoor unit
*3
Wir
ing
Wire No
.
×
siz
e
(mm
2
)
Circuit
rating
PKA
PKH
–
~/N (single), 50Hz, 220-230-240V
16A
–
–
2
×
Min. 1.5
–
1
×
Min. 1.5
3
×
2.5 (Polar)
3
×
2.5 (Polar)
1
×
Min. 2.5
1
×
Min. 2.5
–
–
–
AC 220-230-240V
AC 220-230-240V
AC 220-230-240V
DC24V
DC24V
–
–
*1. A breaker with at least 3 mm contact separation in each pole shall be provided. Use non-fuse breaker (NF) or earth leakage breaker (NV).
*2. A 10 m wire is attached in the remote controller accessory.
*3. The figures are NOT always against the ground.
S3 terminal has DC 24 V against S2 terminal. However between S3 and S1, these terminals are not electrically insulataed by the transformer or other device.
Notes: 1. Wiring size must comply with the applicable local and national code.
2. Power supply cords and Indoor unit/Outdoor unit connecting cords shall not be lighter than polychloroprene sheathed flexible cord. (Design 245 IEC 57)
3. Install an earth longer and thicker than other cables.
