15 Commissioning
Installation and operation manual
20
FXMA-A
VRV system air conditioner
3P680922-1A – 2022.01
Component
Recommended field fuse
6 A
Residual current device
Must comply with applicable legislation
(a)
MCA=Minimum circuit ampacity. Stated values are maximum
values (see electrical data of indoor unit for exact values).
14‒1 Minimum circuit ampacity
Class
50
63
80
100
125
1.8 A
2 A
2.4 A
3 A
3.2 A
14.2
To connect the electrical wiring to
the indoor unit
NOTICE
▪ Follow the wiring diagram (delivered with the unit,
located at the inside of the service cover).
▪ For instructions on how to connect the optional
equipment, see the installation manual delivered with
the optional equipment.
▪ Make sure the electrical wiring does NOT obstruct
proper reattachment of the service cover.
It is important to keep the power supply and the transmission wiring
separated from each other. In order to avoid any electrical
interference the distance between both wirings should ALWAYS be
at least 50 mm.
NOTICE
Be sure to keep the power line and transmission line apart
from each other. Transmission wiring and power supply
wiring may cross, but may NOT run parallel.
1
Remove the service cover.
2
User interface cable
: Route the cable through the frame,
connect the cable to the terminal block (symbols P1, P2).
3
Transmission cable
: Route the cable through the frame,
connect the cable to the terminal block (make sure the symbols
F1, F2 match with the symbols on the outdoor unit). Bundle the
transmission cable with the user interface cable and fix them
with a tie wrap on the wiring fixture.
4
Power supply cable
: Route the cable through the frame and
connect the cable to the terminal block (L, N, earth). Fix the
cable with a tie wrap on the wiring fixture.
a
b
a
Circuit breaker
b
Residual current device
10~15
70~90
7
P1P2 F1 F2
b
L N
10~15
70~90
10~20
c
a
a
Power supply cable
b
Service cover with wiring diagram
c
User interface cable and transmission cable
5
Plastic clamp for tie wrap:
Pass tie wraps through the plastic
clamps and fasten to fix the cables.
6
Reattach the service cover.
Complete system example
1 user interface controls 1 indoor unit.
L
N
L
N
L
N
P
1
P
2
P
1
P
2
P
1
P
2
P
1
P
2
P
1
P
2
F
1
F
2
T
1
T
2
P
1
P
2
F
1
F
2
T
1
T
2
P
1
P
2
F
1
F
2
T
1
T
2
P
1
P
2
F
1
F
2
T
1
T
2
N L
d
c
b
L
N
N L
N L
N L
TO OUT/D
TO IN/D
a
a
Outdoor unit
b
Indoor unit
c
User interface
d
Most downstream indoor unit
NOTICE
Group control connection is NOT allowed.
CAUTION
▪ Each indoor unit has to be connected to a separate
user interface. Only a safety system compatible remote
controller can be used as the user interface. See
technical data sheet for remote controller compatibility
(e.g. BRC1H52/82*).
▪ The user interface has to be put in the same room as
the indoor unit. For details, please refer to the
installation and operation manual of the user interface.
CAUTION
In case shielded wire is used, connect the shielding to the
outdoor unit side only.
15
Commissioning
NOTICE
General
commissioning
checklist.
Next
to
the
commissioning instructions in this chapter, a general
commissioning checklist is also available on the Daikin
Business Portal (authentication required).
The general commissioning checklist is complementary to
the instructions in this chapter and can be used as a
guideline and reporting template during the commissioning
and hand-over to the user.
NOTICE
ALWAYS operate the unit with thermistors and/or pressure
sensors/switches. If NOT, burning of the compressor might
be the result.
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