13
English
7-3 Leading wire Procedure
•
The power wiring and ground wiring are passed out from the
power wiring hole on the sides, the front (knock hole) or the bot-
tom frame (knock hole) .
•
The transmission wiring is passed out from the wiring hole (knock
hole) on the front of the unit or from a piping hole.
(Refer to figure 21)
1.
Outdoor unit
2.
Function unit
3.
Electric wiring diagram (Rear side of EL.COMPO.BOX
lid)
4.
Power wring and ground wiring
5.
Conduit
6.
Piping outlet
7.
Transmission wiring
8.
To Indoor unit and function unit
9.
Wiring inlet (front)
10.
Through cover
11.
Cut off the hatching parts.
12.
Power wiring and ground wiring
13.
Inside conduit
14.
To outdoor unit
15.
Knock hole
16.
For transmission wring
17.
For power wiring and ground wiring
18.
Burr
Note
•
Open the knock holes with a hammer or the like.
•
After knocking out the holes, we recommend you remove any
burrs and paint them using the repair paint to prevent rusting.
(Refer to figure 21)
•
When passing wiring through the knock holes, remove burrs
around the knock holes and protect the wiring with conduit or pro-
tective tape.
•
If small animals might enter the unit, block off any gaps (hatching
parts in figure 21) with material (field supply).
7-4 Transmission Wiring Connection Procedure
•
Referring to figure 22 connect the transmission wiring between
outdoor unit and function unit, outdoor unit and outdoor unit of
same system (Only in case multi outdoor unit system), outdoor
unit and indoor unit, outdoor unit and outdoor unit of other system.
(Refer to figure 22)
1.
For single outdoor unit system
2.
For multi outdoor unit system
3.
Outdoor unit
4.
Function unit
5.
Master outdoor unit A (*)
6.
Slave outdoor unit B (*)
7.
To outdoor unit in other refrigerant system
8.
Indoor unit
9.
Use 2-core cable (with no polarity).
10.
Never connect power wiring.
(*) In the case of the multi outdoor unit system, the outdoor
unit connecting the transmission wiring to the indoor unit
(outdoor unit A in figure 22) is the master and the other
outdoor unit is the slave. Operate the control PCB (A1P)
of the master for commissioning at the time of installation
or local settings at the time of servicing.
Note
•
Do not connect the power wiring to terminals for the transmission
wiring. Doing so would destroy the entire system.
•
When connecting wires to the terminal block on the PC-board, too
much heat or tightening could damage the PC-board. Attach with
care.
See the table below for the tightening torque of the transmission
wiring terminals.
•
All transmission wiring should use sheathed vinyl cord
0.75-1.25 mm
2
or cable (duplex).
•
Transmission wiring should be done within the following limita-
tions.
If they are exceeded, transmission problems may occur.
Between outdoor unit and indoor unit
Between outdoor unit and outdoor unit of other systems
Max. wiring length
:1,000 m
Max. total wiring length
:2,000 m
Max. no. of branches
:16
[Note]
No branch is allowed after branch (
See figure 23
)
Max. no. of outdoor units of other system
that can be connected
: 10
Between outdoor unit and function unit
Between outdoor unit and outdoor unit of same system
Max.wiring length
:30 m
(Refer to figure 23)
1.
Branch
2.
Branch after branch
•
The transmission wiring inside the EL.COMPO.BOX should be
secured using the clamp (1) as shown in figure 24.
(Refer to figure 24)
1.
Outdoor unit
2.
Function unit
3.
Inside EL.COMPO.BOX
4.
Fix two portions in the EL.COMPO.BOX with the
included clamp (1).
5.
Fix a single portion in the EL.COMPO.BOX with the
included clamp (1).
6.
Never connect power wiring.
•
Outside the units, the transmission wiring must be finished simul-
taneously with the local refrigerant piping, and wound with tape
(field supply) as shown in figure 25.
(Refer to figure 25)
1.
Gas pipe
2.
Liquid pipe
3.
Transmission wiring
4.
Insulation material
5.
Finishing tape
•
Wiring to other systems should be connected to terminals F1 and
F2 (TO OUT/D UNIT) on the PC-board of the unit. Connecting the
wires to the Q1, Q2 (TO MULTI UNIT) terminals results in mal-
function.
7-5 Power Wiring Connection Procedure
•
Be sure to connect the power supply wiring to the power supply
terminal block and hold it in place using the included clamp (1) as
shown in the figure 26.
•
The ground wiring should be bound to the power wiring using the
included clamp (1) to prevent outside force from being applied to
the terminal.
(Refer to figure 26)
1.
Power supply (3N ~ 50 Hz, 380 - 415 V)
2.
Earth leakage circuit breaker
3.
Fuse
4.
Ground wiring
5.
Outdoor unit
6.
Function unit
7.
Power supply terminal block
8.
Ground terminal
9.
Clamp (1) (accessories)
10.
Power wiring and ground wiring (to power supply)
11.
Attach the insulating sleeve.
12.
Lay and connect from the upper side
Warning
Be sure to install an earth leakage circuit breaker.
The installation of an earth leakage circuit breaker is a must in
order to prevent electric shock or fire prevention.
Screw size
Tightening torque (N · m)
M3.5 (A1P)
0.80 - 0.96
01_EN_3P201178-10P.fm Page 13 Wednesday, September 2, 2009 11:10 AM
