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4 Remote switch (See Note 2)
5 Caution output
6 Warning output
7 Alarm panel
8 Run output
9 Panel
10 Earth
11 OFF: Normal mode
ON: Low noise mode
12 Indoor unit
13 Multi transmission (Q1, Q2)
Note
• Use conduit for power supply wiring.
• Make sure the weak electric wiring (i.e. for the remote controller,
between units, etc.) and the power wiring do not pass near each
other, keeping them at least 50 mm apart.
Proximity may cause electrical interference, malfunctions, and
breakage.
• Be sure to connect the power wiring to the power wiring terminal
block and secure it as described in
wiring" on page
14.
• Do not connect the power supply to the terminal block for the
transmission wiring for warning, alarm, operation output, and
remote operation switch. Otherwise the entire system will be
damaged.
• Transmission wiring should be secured as described
in
"7-3 Procedure for power supply wiring" on page
• Secure wiring with clamp such as insulation lock ties to avoid
contact with piping.
• Shape the wires to prevent the structure such as the control box lid
deforming. And close the cover firmly.
7-2 Procedure for incoming wiring
• Route high-voltage wiring (power supply wiring, earth wires, and
warning/alarm/operation wiring) through wiring openings located
on the side or front of the unit (knock holes) or on the bottom frame
(knock holes).
• Route low-voltage wiring (for remote operating switches) through
wiring openings (knock holes) located on the front of the unit or
through wiring intakes.
Through-hole cover
Cut the shaded area
High-voltage wiring
Conduit
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.
• When passing electrical wiring through the knock holes, protect the
wiring with a conduit or bushings, making sure not to damage the
wiring.
• If small animals might enter the unit, block off any gaps (hatching
parts) with material (field supply).
Knockout hole
(For low-voltage wiring)
Knockout hole
(For high-voltage wiring)
Burr
LREQ15+20B7Y1R
Air cooled refrigeration condensing unit
4P360438-1B – 2014.01
"7-2 Procedure for incoming
14.
Electric wiring label
(Rear side of control
box lid)
Piping outlet
Low-voltage wiring
7-3 Procedure for power supply wiring
Procedure for Power Supply Wiring
4
2
3
4
1
4
5
L1
L2
6
1
Power supply (3 phase 50 Hz 380~415)
2
Overcurrent circuit breaker (earth leakage circuit breaker) all pole
disconnection switch
3
Earth wire
4
Power supply terminal block
5
Mount insulation sleeves
6
Fix the power supply wiring for phases L1, L2, L3, and N,
respectively, with the provided clamp (1) to the resin clamp.
7
Fix the earth wire to the power supply wire (phase N) with the
provided clamp (1).
8
Earth wire
Perform wiring so that the earth wire will not come in contact with
lead wires of the compressor. Otherwise, noise generated may
have a bad influence on other equipment.
9
Earth terminal
10 • When two wires are connected to a single terminal, connect
them so that the rear sides of the crimp contacts face each
other.
• Also, make sure the thinner wire is on top, securing the two wires
simultaneously to the resin hook using the accessory clamp (1).
Terminal block
Crip style terminal
Power circuit, safety device, and cable requirements
• A power circuit (see the following table) must be provided for
connection of the unit. This circuit must be protected with the
required safety devices, i.e. a main switch, a slow blow fuse on
each phase and an earth leakage circuit breaker.
• When using residual current operated circuit breakers, be sure to
use a high-speed type (1 second or less) 200 mA rated residual
operating current.
• Use copper conductors only.
• Use insulated wire for the power cord.
• Select the power supply cable type and size in accordance with
relevant local and national regulations.
• Specifications for local wiring are in compliance with IEC60245.
• Use wire type H05VV when protected pipes are used.
• Use wire type H07RN-F when protected pipes are not used.
Phase and
frequency
LREQ15
3~ 50Hz
LREQ20
3~ 50Hz
L3
N
10
X1M
9
8
7
Clamp (1)
Wire: narrow
Wire: thick
Resin hook
Minimum circuit
Recommended
Voltage
amp.
380-415V
62.8A
380-415V
70.0A
Installation manual
fuses
70A
80A
14
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