Daikin LCBKQ3AV1, Installation Manual, Page: 12 / 14

10 English
• Block the gap (shaded area shown in the figure below) with seal-
ing material such as putty if an intrusion by small creatures is pos-
sible.
6-3 Wiring Connection
High voltage wiring (Power supply wiring, Refrigeration opera-
tion output wiring, and earth wire)
• 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).
Power circuit, safety device, and cable requirements
• A power circuit (see the following table) must be provided for con-
nection 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.
• 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.
Refrigeration operation output wire specifications
CAUTION
• Refer to the “ 6-1 Example of Wiring Entire System ” by all
means when connecting the operation output wiring.
A compressor failure may result if the operating output wiring is
not connected.
Low voltage wiring (transmission wire, refrigeration operation
input wiring and remote switch wire)
Connect low voltage wiring between the booster unit and the outdoor
unit, the booster unit and the integrated heat control board and the
remote switch by referring to the figure below.
<Precautions for low voltage wiring>
• Never connect the 220-240V power supply to the terminal block of
low voltage wiring. The entire system could be damaged.
• Isolate low voltage wiring from high voltage wiring (power supply
wire, refrigeration operation output wiring and earth wire) by at
least 50 mm.
• Always install low voltage wiring using vinyl cord with a 0.75-1.25
mm
2
sheath or cable (duplex).
• Install low voltage wiring within the limit described below. Exceed-
ing the limit can cause transmission problems.
Distance between the booster unit and the outdoor unit: 100 m
<Connection for transmission wire and refrigeration operation
input wiring>
<Connection for remote switch wire>
• Set the operation switch to “Remote” as shown in the figure below
to remotely start up and shut down.
• Use a remote switch that has a contact assuring the minimum
applicable load of DC12V/1mA.
6-4 Checking of Device and Installation Conditions
Be sure to check the followings.
<For those doing electrical work>
See “ 6-2 Procedure for Incoming Wiring ”.
1.
Make sure there is no faulty power wiring or loosing of a nut.
See “
6-3 Wiring Connection ”.
2.
Has the insulation of the main power circuit deteriorated?
Measure the insulation and check the insulation is above regular
value in accordance with relevant local and national regulations.
<For those doing pipe work>
1.
Make sure piping size is correct.
See “
5-1 Selection of Piping Material ”.
2.
Make sure insulation work is done.
See “
5-6 Thermal Insulation for Piping ”.
3.
Make sure there is no faulty refrigerant piping.
See “
5. REFRIGERANT PIPING ”.
7. CHECKS AFTER WORK COMPLETION
• Make sure the following works are complete in accordance with
the installation manual.
„
Piping work
„
Wiring work
„
Air tight test/Vacuum drying
„
Installation work for indoor unit (Refrigeration unit cooler,
refrigeration showcase, freezer showcase, air-conditioner)
„
Installation work for outdoor unit
„
Drainage water
Phase and
frequency
Voltage
Minimum
circuit
amp.
Recom-
mended
fuses
LCBKQ3AV1
φ
1, 50Hz 220-240V 15A 20A
Electric wire thickness
0.75~1.25mm
2
Max. wiring length 130m
Do not touch the high pressure
piping in the shaded area
during wiring.
Gap
(Block with sealing
material.)
Power supply
(1 phase 220~240V)
Earth wire
Power supply
terminal block
Earth wire
Attach the
insulation sleeve
Power supply wire
Earth terminal
X1M
X1M
Overcurrent
circuit breaker
(Earth leakage
circuit breaker)
Refrigeration operation
output wiring
Fix refrigeration operation
output wiring (S1, S2) with
the attached clamp.
Fix power supply wiring
(L/N phases) with the
attached clamp
L N
Terminal block Crip style terminal
Wire: narrow
Clamp (1)
Wire: thick
Resin hook
High voltage wiring
Low voltage wiring Transmission wire
Refrigeration operation
input wiring
Refrigeration operation input wiring
<Outdoor unit>
F1F2 F1F2 F1F2 T1T2 F1F2 1 2
In-Out Out-Out Out-Multi In-Out
<Booster unit>
50mm or more
Transmission
wire
Never connect the power supply wire
Fix low voltage wiring
with the attached clamp
REMOTE ON OFF
REMOTE ON
Remote switch
(between 1 and 2)
Ú
Constant a-contact input
OFF