Daikin LRNUN-AY1, Installation And Operation Manual

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14 Electrical installation
Installation and operation manual
29
LRYELRNUN5A7Y1
CO
₂ Conveni-Pack outdoor unit and capacity up unit
4P605461-1B – 2020.08
Low noise switch Mode
OFF Normal mode
ON Low noise mode
Wiring low noise switch:
Wiring Sheathed cable (2 wires)
Vinyl cords
0.75~1.25 mm²
Maximum wiring length 130 m
14.6.2 High voltage wiring – Outdoor unit
Connections/routing/fixing
3N~ 50 Hz
380-415 V
L1 L2 L3
L1 L2 L3 N
N
X1M PE
c
b
a
d
a d/e/f/g
e f
X4M
g
C C1 W1 R P1 P2
X4M
X1M
PE
1
2
X1M Power supply:
a: Power supply cable
b: Overcurrent fuse
c: Earth leakage circuit breaker
PE Protective earth (screw)
X4M Output signals:
d: Caution
e: Warning
f: Run
g: Operation
X4M
X1M
PE
1 2
h
h Wiring intake (knockout hole) for high voltage. See
"14.3 Guidelines when knocking out knockout
holes"
[ 4 27].
Details – Output signals
NOTICE
Output signals . The outdoor unit is provided with a
terminal (X4M) that can output 4 different signals. The
signal is 220~240 V AC. The maximum load for all signals
is 0.5 A. The unit outputs a signal in the following
situations:
▪ C/C1: caution signal – connection recommended –
when an error occurs that does not stop unit operation.
▪ C/W1: warning signal – connection recommended –
when an error occurs that causes unit operation to
stop.
▪ R/P2: run signal – connection optional – when the
compressor is running.
▪ P1/P2: operation signal – connection mandatory –
when the expansion valves of the connected
showcases and blower coils are being controlled.
NOTICE
The operation output P1/P2 of the outdoor unit must be
connected to all expansion valves of the connected
showcases and blower coils. This connection is required
because the outdoor unit must be able to control the
expansion valves during startup (to prevent liquid
refrigerant from entering the compressor) and to prevent
opening of safety valve at the low pressure side of the
refrigeration cabinet.
Check on site that the expansion valve of the showcase or
blower coil can ONLY open when P1/P2 signal is ON.
Wiring output signals:
Wiring Sheathed cable (2 wires)
Vinyl cords
0.75~1.25 mm²
Maximum wiring length 130 m
Details – Power supply
See "14.5 Specifications of standard wiring components" [
4
27].
14.7 Connections to the capacity up
unit
NOTICE
▪ Be sure to keep the power line and transmission line
apart from each other (≥50 mm). Transmission wiring
and power supply wiring may cross, but may not run
parallel.
▪ Transmission wiring and power supply wiring may not
touch internal piping in order to avoid wire damage due
to high temperature piping.
▪ Firmly close the lid and arrange the electrical wires so
as to prevent the lid or other parts from coming loose.
Low voltage wiring ▪ DIII transmission wiring
▪ Remote switches (operation, low
noise)
High voltage wiring ▪ Output signals (caution, warning,
run)
▪ Power supply (including earth)