FXZQ20~50M8V1B
VRV System air conditioners
4PW25085-1C
Installation and operation manual
5
2.
After piping work is finished, check if drainage flows
smoothly.
■
Open the water inlet lid, add approximately 2 l of water
gradually and check the drainage flow.
Method of adding water. See
When electric wiring work is finished
Check drainage flow during COOL running, explained in the chapter
When electric wiring work is not finished
■
Remove the switch box lid and connect the power supply and
remote controller to the terminals.
■
Next, press the inspection/test operation button
on the
remote controller. The unit will engage the test operation
mode. Press the operation mode selector button
until
selecting fan operation
. Then, press the on/off button
. The indoor unit fan and drain pump will start up. Check
that the water has drained from the unit. Press
to go
back to the first mode.
■
Note that the fan also starts rotating.
■
Attach the switch box lid as before.
E
LECTRIC
WIRING
WORK
General instructions
■
All field supplied parts and materials and electric works must
conform to local codes.
■
Use copper wire only.
■
Follow the "Wiring diagram" attached to the unit body to wire the
outdoor unit, indoor units and the remote controller. For details
on hooking up the remote controller, refer to the "Installation
manual of the remote controller".
■
All wiring must be performed by an authorized electrician.
■
A circuit breaker capable of shutting down power supply to the
entire system must be installed.
Note that the operation will restart automatically if the main
power supply is turned off and then turned back on again.
■
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.
■
Refer to the installation manual attached to the outdoor unit for
the size of power supply electric wire 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 connect the ground wire to gas pipes, water pipes,
lightning rods, or telephone ground wires.
•
Gas pipes: might cause explosions or fire if gas leaks.
•
Water pipes: no grounding effect if hard vinyl piping is used.
•
Telephone ground wires or lightning rods: might cause
abnormally high electric potential in the ground during lightning
storms.
Electrical characteristics
MCA: Min. circuit Amps (A)
MFA: Max. Fuse Amps (A)
kW: Fan Motor Rated Output (kW)
FLA: Full Load Amps (A)
Specifications for field supplied fuses and wire
1
Drain pipe
2
Service drain outlet with rubber plug. Use this outlet to drain
water from the drain pan.
3
Plastic container for pouring
■
Drain piping connections
Do not connect the drain piping directly to sewage
pipes that smell of ammonia. The ammonia in the
sewage might enter the indoor unit through the drain
pipes and corrode the heat exchanger.
■
Keep in mind that it will become the cause of getting
drain pipe blocked if water collects on drain pipe.
1
Switch box lid
2
Remove the switch box lid (take off 2 screws)
3
Power supply terminal block
4
Remote controller terminal block
5
Remote controller wiring
TEST
TEST
Units
Power
supply
Fan motor
Model
Hz
Volts
Voltage
range
MCA
MFA
kW
FLA
FXZQ20
50
220-240
≤
264
≥
198
0.8
15
0.055
0.6
FXZQ25
0.8
15
0.055
0.6
FXZQ32
0.8
15
0.055
0.6
FXZQ40
0.8
15
0.055
0.6
FXZQ50
0.9
15
0.055
0.7
NOTE
For details, refer to "Electrical data".
Power supply wiring
Remote controller wiring
and Transmission wiring
Model
Field
fuses
Wire
Size,
length
Wire
Size
FXZQ20
15 A
H05VV-U3G
Wire size
and length
must
comply with
local
codes.
Sheathed
wire
(2 wire)
0.75~1.25 mm
2
FXZQ25
FXZQ32
FXZQ40
FXZQ50
NOTE
■
For details, refer to the chapter
"Wiring example"
on page 7
.
■
Allowable length of transmission wiring between
indoor and outdoor units, and between the indoor
unit and the remote controller is as follows:
•
Outdoor unit - indoor unit:
≤
1000 m
(total wiring length: 2000 m)
•
Indoor unit - remote controller:
≤
500 m
