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14.3
Guidelines when knocking out
knockout holes
▪ To punch a knockout hole in a front panel, hit on it with a hammer.
▪ To punch a knockout hole in the bottom panel, drill holes where
indicated.
▪ After knocking out the holes, we recommend removing any burrs
and paint the edges and areas around the holes using repair paint
to prevent rusting.
▪ When passing electrical wiring through the knockout holes.
prevent damage to the wires by wrapping the wiring with
protective tape, putting the wires through field supplied protective
wire conduits at that location, or install suitable field supplied wire
nipples or rubber bushings into the knockout holes.
a
c
d
e
a
Outdoor unit
b
Capacity up unit
Knockout holes for:
c
Piping (refrigeration)
d
High voltage wiring
e
Low voltage wiring
f
Piping (air conditioning)
g
Remove burrs
WARNING
Provide adequate measures to prevent that the unit can be
used as a shelter by small animals. Small animals that
make contact with electrical parts can cause malfunctions,
smoke or fire.
LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit and capacity up unit
4P605461-1B – 2020.08
b
f
c
d
e
g
14 Electrical installation
14.4
Guidelines when connecting the
electrical wiring
Tightening torques
a
X4M
X1M (A1P)
X5M
X1M
PE
a
Terminals on outdoor unit
b
Terminals on capacity up unit
Terminal
Screw size
X1M: Power supply
PE: Protective earth
(screw)
X2M, X4M: Output
signals
X3M, X5M: Remote
switches
X1M (A1P): DIII
transmission wiring
14.5
Specifications of standard wiring
components
Power supply
NOTICE
When using residual current operated circuit breakers, be
sure to use a high-speed type 300 mA rated residual
operating current.
The power supply must be protected with the required safety
devices, i.e. a main switch, a slow blow fuse on each phase and an
earth leakage protector in accordance with the applicable legislation.
Selection and sizing of the wiring should be done in accordance with
the applicable legislation based on the information mentioned in the
table below.
Make sure that a separate power supply circuit is provided for this
unit and that all electrical work is carried out by qualified personnel
according to local laws and regulations and this manual. An
insufficient power supply capacity or improper electrical construction
may lead to electric shocks or fire.
Model
Minimum
circuit ampacity
LRYEN10A7Y1
33 A
LRNUN5A7Y1
16 A
DIII transmission wiring
Transmission wiring specification and limits
Vinyl cords with 0.75 to 1.25 mm² sheath or cables (2‑core wires)
b
X1M (A1P)
X2M
X3M
X1M
PE
Tightening torque
(N•m)
M8
5.5~7.3
M8
M4
1.18~1.44
M3.5
0.79~0.97
M3.5
0.80~0.96
Recommended
Power supply
fuses
45 A
3N~ 50 Hz
380-415 V
25 A
3N~ 50 Hz
380-415 V
(a)
Installation and operation manual
27
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Troubleshooting
