8
English
•
Use the duct applicable to the model of unit used (Refer to
the installation drawing.)
•
Install the two outdoor ducts with down slope (slope of 1/30
or more) to prevent entry of rain water. Also, provide insula-
tion for three ducts (Outdoor ducts and Indoor supply air
duct) to prevent dew condensation.
(Material : Glass wool of 25 mm thick)
(Refer to Fig. 16)
•
If the level of temperature and humidity inside the ceiling
is always high, install a ventilation equipment inside the
ceiling.
•
Insulate the duct and the wall electrically when a metal duct
is to be penetrated through the metal lattice and wire lattice
or metal lining of a wooden structure wall.
•
Using flexible or silent ducts can be effective in reducing the
air discharge sound of the supply air to room (SA). Select
materials keeping in mind the fan strength and operating
sound of the unit. Consult your Daikin dealer for selection.
•
Set the pitch between the exhaust air outlet (EA) and the out-
side air intake (OA) to 3 times the duct diameter.
•
Do not use a bent cap or a round hood as the outdoor hood
if they might get rained on directly. (We recommend using a
deep hood (optional accessory).)
•
When using a deep hood, make sure the duct from the deep
hood (outer wall) to the unit is at least 1m long.
•
The change of air discharge grill's location should be exam-
ined when the cold draft from air discharge grill is feared.
The fan is driving while defrost operation, and the cold air is
often blowing.
•
When connecting the indoor unit directly to the duct, always
use the same system on the indoor unit as with the outdoor
unit, perform group-linked operation, and make the direct
duct connection settings from the remote controller (Mode
No. “17 (27)” – FIRST CODE NO. “5” – SECOND CODE NO.
“06”) Also, do not connect to the outlet side of the indoor unit.
Depending on the fan strength and static pressure, the unit
might back up.
9
ELECTRIC WIRING WORK
•
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.
•
All wiring must be performed by an authorized electrician.
•
See also the “Electrical Wiring Diagram label” attached to the
electric parts box lid when laying electrical wiring.
•
Wire the outdoor unit and remote controller as shown in the
electric wiring diagram label. See the “Remote Controller
Installation Manual” for details on how to install and lay the
wiring for the remote controller.
•
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.
•
Install a wiring interrupter or ground-fault circuit interrupter
for the power wiring.
•
Make sure the ground resistance is no greater than 100
Ω
.
This value can be as high as 500
Ω
when using a ground fault
circuit interrupter since the protective ground resistance can
be applied.
•
Do not let the ground wire should come in contact with gas
pipes, water pipes, lighting rods, or telephone ground wires.
•
Gas pipes: gas leaks can cause explosions and fire.
•
Water pipes: cannot be grounded if hard vinyl pipes are used.
•
Telephone ground and lightning rods: the ground poten-
tial when struck by lightning gets extremely high.
•
Do not turn on the power supply (switch, wiring interrupter or
ground fault circuit interrupter) until all other works are done.
SPECIFICATIONS FOR FIELD SUPPLIED FUSES
AND WIRE
NOTE
•
If the wiring is in a place where people it can be easily
touched by people, install a leak interrupter to prevent
electric shock.
•
When using a ground-fault circuit interrupter, make sure
to select one useful also to protection against overcurrent
and short-circuit.
If you use a leak interrupter which is designed for protect-
ing again ground faults, be sure to combine it with a wir-
ing interrupter or an load switch that has a fuse.
•
The length of the transmission wiring and remote control-
ler wiring are as follows.
ELECTRICAL CHARACTERISTICS
MCA: Min. Circuit Amps (A);
MFA: Max. Fuse Amps (A)
kW: Fan Motor Rated Output (kW); FLA: Full Load Amps (A)
Fig. 16
Aluminum tape
(Locally procured)
Aluminum tape
(Locally procured)
Insulation material
(Locally procured)
Slope:
Over 1/30
Outdoor duct
Make sure there
is no slack in the duct.
Duct connecting
flange
Model
Power supply wiring
Remote controller wiring
Transmission wiring
Field
fuses
Wire
Size
Wire
Size
VKM50GMV1,
VKM50GV1
15A
H05VV-
U3G
Follow
local
standards
Sheathed
wire
(2 wire)
0.75-1.25
mm
2
VKM80GMV1,
VKM80GV1
VKM100GMV1,
VKM100GV1
Length of outdoor-indoor transmission
wiring … max 1000m (total wiring length 2000m)
Length of remote controller wiring between indoor
unit and remote controller … max 500m
Units
Power supply
Fan motor
Model
Hz
Volts
Voltage
range
MCA
MFA
kW
FLA
VKM50GMV1,
VKM50GV1
50
220-
240V
Max.
264V
Min.
198V
4.3
15
0.28×2
1.9×2
VKM80GMV1,
VKM80GV1
4.3
15
0.28×2
1.9×2
VKM50GMV1,
VKM50GV1
4.3
15
0.28×2
1.9×2
01_3P130768-1A_En.fm Page 8 Wednesday, March 23, 2005 7:00 PM
