Daikin R410A Split Series Installation Manual page 13

3. Specification for field wire
Wiring between units
Remote controller wiring
Wiring to ground terminal
* This will be the total extended length in the system when doing group control.
4. Wiring connection method
CAUTION FOR WIRING
Recommend stranded cable for interunit wiring. Local code always supersedes recommendation.
• For stranded wires, make sure to use the round crimp-style terminal for
connection to the power supply terminal block. Place the round crimp-
style terminals on the wires up to the covered part and secure in place.
Flat washer
Screw
• If solid core wire must be used, be sure to curl the end of the lead.
Improper work may cause heat and fire.
Tightening torque for the terminal blocks
• Use the correct screwdriver for tightening the terminal screws. If the blade of screwdriver is too small, the head of the
screw might be damaged, and the screw will not be properly tightened.
• If the terminal screws are tightened too hard, screws might be damaged.
• Refer to the table below for the tightening torque of the terminal screws.
Terminal block for remote controller (6P)
Terminal block for power supply (4P)
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.
■
English
Wire
Recommend stranded and shielded.
Local code supersedes recommendation.
Sheathed (2 wire)
Recommend stranded and shielded.
Local code supersedes recommendation.
A
Round
crimp-style
Good
terminal
Size
AWG 14
AWG 18 - 16
–
Round crimp-style
terminal
Screw
Round crimp-style
terminal
Flat washer
Wrong
Arrow view A
Good
Tightening torque
0.58 - 0.72 (0.79 - 0.98)
0.87 - 1.06 (1.18 - 1.44)
Length
–
Max. 1640ft (500m)*
–
Stranded wire
Screw
Flat washer
Round crimp-style
terminal
Wrong
unit: lbf • ft (N • m)
Screws (2 points)
12