18 Technical data
Installation and operation manual
23
FHA-A(9)
Split system air conditioner
3P668115-4E – 2022.11
If you want an interval of…
(air contamination)
ThenFN
M
SW
—
±2500 h (light)
10 (20)
0
01
±1250 h (heavy)
02
Notification ON
3
01
Notification OFF
02
Setting: Number of the connected indoor units as simultaneous
operation system
For simultaneous operation system mode made following field
setting:
If the system mode is…
Then
(1)
M
SW
—
Pair (1 unit)
11 (21)
0
01
Twin (2 units)
02
Triple (3 units)
03
Double twin (4 units)
04
When using in
simultaneous operation
system mode, refer to
“simultaneous operation system individual setting” section to set
master and slave units separately.
Setting: Simultaneous operation system individual setting
Perform the following procedure when setting the master and slave
unit separately.
1
Change setting:
If you want…
Then
(1)
M
SW
—
Unified setting
11 (21)
1
01
Individual setting
02
2
Perform field setting for the master unit.
3
Turn off main power supply.
4
Detach user interface from the master unit and connect it to the
slave unit.
5
Turn on the main power supply switch and set individual setting
to 11(21)-1-02.
6
Perform field setting for slave unit.
7
Turn off the main power supply.
8
If there is more than one slave unit, repeat setting for each.
9
Detach user interface from the slave unit and reattach to the
master unit.
INFORMATION
▪ You do NOT need to rewire the user interface from the
master unit if the optional user interface for slave unit is
used. However, remove the wires attached to the user
interface of the master unit.
▪ After the slave unit is set up, re-connect the user
interface to master unit.
▪ The system does not operate properly when two or
more user interfaces are attached in the simultaneous
operation system mode.
Setting: T1/T2 input setting
Remote control is available by transmission the external input to the
terminals T1 and T2 on the terminal block for the user interface and
the transmission wiring.
F2
T1
OFF
FORCED
T2
Input A
b
a
a
Forced OFF
b
Input A
Wiring requirements
Wiring specification
Only use harmonized wire
providing double insulation and
suitable for applicable voltage
2-core cable
Wiring size
Minimum 0.75 mm
2
Wiring length
Maximum 100 m
External contact specification
Contact that can make and break
the min. load of DC15 V · 1 mA
This setting must correspond with the needs of the user.
If you want to change increments to…
Then
(1)
M
SW
—
Forced OFF
12 (22)
1
01
ON/OFF Operation
02
Emergency (recommended for alarm
operation)
03
18
Technical data
▪ A
subset
of the latest technical data is available on the regional
Daikin website (publicly accessible).
▪ The
full set
of latest technical data is available on the Daikin
Business Portal (authentication required).
18.1
Wiring diagram
18.1.1
Unified wiring diagram legend
For applied parts and numbering, refer to the wiring diagram on the
unit. Part numbering is by Arabic numbers in ascending order for
each part and is represented in the overview below by "*" in the part
code.
Symbol
Meaning
Symbol Meaning
Circuit breaker
Protective earth
Connection
Protective earth (screw)
,
Connector
A
,
Rectifier
Earth
Relay connector
Field wiring
Short-circuit connector
Fuse
Terminal
INDOOR
Indoor unit
Terminal strip
OUTDOOR
Outdoor unit
Wire clamp
(1)
Field settings are defined as follows:
•
M
: Mode number –
First number
: for group of units –
Number between brackets
: for individual unit
•
SW
: Setting number
• —: Value number
•
: Default
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