Daikin 3MXS40K2V1B Installation Manual page 18

Wiring
WARNING
• Do not use tapped wires, stranded wires, extension cords, or starburst connections, as they may cause overheating, electrical
shock, or fire.
• Do not use locally purchased electrical parts inside the product. (Do not branch the power for the drain pump, etc., from the
terminal block.) Doing so may cause electric shock or fire.
• Be sure to install an earth leakage breaker. (One that can handle higher harmonics.)
(This unit uses an inverter, which means that it must be used an earth leakage breaker capable handling harmonics in order to
prevent malfunctioning of the earth leakage breaker itself.)
• Use an all-pole disconnection type breaker with at least 3 mm between the contact point gaps.
• Do not connect the power wire to the indoor unit. Doing so may cause electric shock or fire.
• Do not turn on the safety breaker until all work is completed.
1) Strip the insulation from the wire (20mm).
2) Connect the inter-unit wires between the indoor
and outdoor units so that the terminal num-
bers match. Tighten the terminal screws
securely. We recommend a flathead screw-
driver be used to tighten the screws. The
screws are packed with the terminal board.
CAUTION
When connecting the connection wires to the
terminal board using a single core wire, be sure
to perform curling.
Problems with the work may cause heat and fires.
Good
• Ground terminal installation
Use the following method when installing the round
crimp-style terminal.
Screw
Round crimp-
style terminal
Flat washer
Good
3) Pull the wire and make sure that it does not disconnect. Then fix the wire in place with a wire stop.
■ Earth
This air conditioner must be earthed.
For earthing, follow the applicable local standard for electrical installations.
12
Indoor unit
Wrong
Shape the wires so that
there is no lifting of the
service hatch or other
structural parts.
Screw
Flat washer
Round crimp-
style terminal
Wrong
Room Room
A B
Room Room
C D
To room D
To room C
Room A
To room B
Secure the branch wiring firmly using the 4
included screws, as shown in the figure.
Secure firmly, making sure no outside pressure is
exerted on the terminals.
Outdoor unit
Power supply wire
3-core 2.5mm² or more
H05RN
Be sure to use the dedicated circuits.
Earth leakage 50Hz
Safety breaker
circuit breaker 220-240V
Inter-unit wire
4-core 1.5mm² or more
H05RN
L N
Use the specified wires and
connect them securely.
■English