Daikin FDMQ09RVJU Installation Manual page 13

9-2 WIRING EXAMPLE
For the wiring of outdoor units, refer to the installation manual
attached to the outdoor units.
Confirm the system type.
• Multi system: 2 through 6 (The number of connectable units
will vary according to model) indoor units connect to 1 outdoor
unit. The indoor unit is controlled by remote controller connected
to each indoor unit.
Multi system
Outdoor unit
1 2 3 1 2 3
1 2 3 1 2 3
P P P P
1 2
Indoor Indoor
unit unit
P P
1 2
Remote controller
(Optional accessories)
Fig. 20
NOTE
1. All transmission wiring except for the remote controller
wires is polarized and must match the terminal symbol.
2. In case a shielding wire is to be used, connect a shielded
portion with the of a remote controller terminal block.
(Also, connect the ground for the remote control to a
grounded metal part.)
9-3 SPECIFICATION FOR FIELD WIRE
Table 2
Wire
Wire size and length
Wiring between
must comply with
units
local codes.
Remote controller
Sheathed (2 wire)
wiring
Wire size and length
Wiring to ground
must comply with
terminal
local codes.
* This will be the total extended length in the system when doing group
control.
English
Main power supply
Main switch
Fuse
1 2 3
1 2 3
P P
1 2 1 2
Indoor
unit
P P P P
1 2 1 2
Size Length (ft.)
– –
AWG
Max.1640*
18 - 16
– –
9-4 WIRING CONNECTION METHOD
CAUTION FOR WIRING
• For connection to the terminal block, use ring type crimp
style terminals with insulation sleeve or insulate the wirings
properly.
Insulation sleeve
Ring type crimp
style terminals
Fig. 21
• Connect the terminal as shown in Fig. 22.
When installing a single core wire.
• Do not carry out soldering finish when stranded wirings
are used. (Otherwise, the loosening of wiring may result in
abnormal heat radiation.)
Fig. 22
(Abnormal heating may occur if the wirings are not tightened
securely.)
• Use the required wirings, connect them securely and fix
these wirings securely so that external force may not apply to
the terminals.
• Use a proper screw driver for tightening the terminal screws.
If an improper screw driver is used, it may damage the screw
head and a proper tightening cannot be car ried out.
• If a terminal is over tightened, it may be damaged.
Refer to the table shown below for tightening torque of
terminals.
Table 3
Terminal block for remote controller
(6P)
Terminal block for power supply
(4P)
• Do not carry out soldering finish when stranded wirings
are used.
WARNING
• When wiring, form the wirings orderly so that the electrical wiring
box cover can be securely fastened. If the electrical wiring box
cover is not in place, the wirings may come out or be sandwiched
by the box and the lid and cause electric shock or a fire.
(1) Remove the electrical wiring box cover.
Fig. 23
Wiring
unit: lbf • ft (N • m)
Tightening torque
0.58 - 0.72 (0.79 - 0.98)
0.87 - 1.06 (1.18 - 1.44)
Screws
(2 points)
12