Installing The Duct; Electric Wiring Work - Daikin VRV SYSTEM FXNQ20A2VEB Installation Manual

9.

INSTALLING THE DUCT

Air outlet side
Insulation material
(Field supply)
Flange
Main unit
• Connect the duct according to the air inside of the outlet-side
flange.
• Wrap the outlet-side flange and the duct connection area
with aluminum tape or something similar to prevent air
escaping.
CAUTION
• Be sure to insulate the duct to prevent condensation from
forming. (Material: glass wool or polyethylene foam, 25 mm
thick)
• Use electric insulation between the duct and the wall when
using metal ducts to pass metal laths of the net or fence
shape or metal plating into wooden buildings.
• Be sure to explain about the way of maintaining and cleaning
local procurements (air filter, grille (both air outlet and suction
grille), etc.) to your customer.

10. ELECTRIC WIRING WORK

10-1 GENERAL INSTRUCTIONS
• Shut off the power before doing any work.
• All field supplied parts and materials, electric works must
conform to local codes.
• Use copper wire only.
• See also the "Wiring Diagram plate" attached to the control
box lid when laying electrical wiring.
• For details on hooking up the remote controller, refer to the
"REMOTE CONTROLLER INSTALLATION MANUAL".
• All wiring must be performed by an authorized electrician.
• This system consists of multiple indoor units. Mark each
indoor unit as unit A, unit B . . . , and be sure the terminal board
wiring to the outdoor unit and BS unit are properly matched. If
wiring and piping between the outdoor unit and an indoor unit
are mismatched, the system may cause a malfunction.
• A circuit breaker capable of shutting down power supply to
the entire system must be installed.
• Refer to the installation manual attached to the outdoor unit
for the size of power supply wiring connected to the outdoor
unit, the capacity of the circuit breaker and switch, and wiring
instructions.
• Be sure to ground the air conditioner.
• Do not allow the earth wire to come in contact with gas pipes,
water pipes, lightning rods, or telephone earth wires.
• Gas pipes: gas leaks can cause explosions and fire.
• Water pipes: they cannot be grounded if hard vinyl pipes
are used.
• Telephone earth wire and lightning rods: the ground
potential when struck by lightning gets extremely high.
8
Aluminum tape
(Field supply)
Outlet side
Air inlet side
• To avoid short circuiting the power supply wire, be sure to
use insulated terminals.
• Do not turn on the power supply (circuit breaker or earth leak-
age breaker) until all other work is done.
10-2 SPECIFICATIONS FOR FIELD SUPPLIED FUSES
AND WIRE
Power-related
Power supply wiring (including earth wire)
Model
Number
of units
20 · 25 · 32 type
40 · 50 type 1
63 type
Model
20 · 25 · 32 type
Sheathed vinyl cord
40 · 50 type
or cable (2 wires) (NOTE 2)
63 type
NOTES
1. Shows only in case of protected pipes. Use H07RN-F in
case of no protection.
2. Insulated thickness : 1mm or more.
3. If the wiring is in a place where there are people it can be
easily touched by people, install an earth leakage breaker to
prevent electric shock.
4. When using an earth leakage breaker, make sure to select
one useful also for protection against overcurrent and short-
circuit.
When using an earth leakage breaker only for earth device,
make sure to use a wiring interrupter together.
• The length of the transmission wiring and remote controller
wiring are as follows.
Length of the transmission wiring and remote controller wiring
Outdoor unit – Indoor unit
Indoor unit – Remote controller
10-3 ELECTRICAL CHARACTERISTICS
Units
Model
Hz Volts
20 · 25 · 32
40
220-
50
240
50
63
20 · 25 · 32
40
60 220
50
63
MCA: Minimum Circuit Amps (A) MFA:Max. Fuse Amps (A)
KW: Fan motor output (kW)
Field
fuses
Wire
Size must
H05VV-U3G
16 A comply with
(NOTE 1)
local codes.
Transmission wiring
Remote controller wiring
Wire
Size (mm
0.75 - 1.25
Max. 1000m
(Total wiring length: 2000m)
Max. 500m
Power supply Fan motor
Voltage
MCA MFA KW
range
0.4 0.068
Min.
0.5 0.075
198
16
Max.
0.5 0.096
264
0.6 0.107
0.5 0.068
Min.
0.6 0.075
198
16
Max.
0.6 0.096
242
0.7 0.107
FLA:Full Load Amps (A)
Size
2 )
FLA
0.3
0.4
0.4
0.5
0.4
0.5
0.5
0.6
English