Daikin FXZQ-M Series, Engineering Data

Page: 30 / 40

EDUS39-800-F9 Installation and Operation
FXZQ-M 29
9. ELECTRIC WIRING WORK
9-1 General instructions

All field supplied parts and materials and electric works
must conform to local codes.

Use copper wire only.

Follow the "Wiring diagram" attached to the unit body to
wire the outdoor unit, indoor units and the remote control-
ler. For details on hooking up the remote controller, refer to
the "Installation manual of the remote controller".

All wiring must be performed by an authorized electrician.

A circuit breaker capable of shutting down power supply to
the entire system must be installed.
Note that the operation will restart automatically if the main
power supply is turned off and then turned back on again.

This system consists of multiple indoor units. Mark each
indoor unit as unit A, unit B..., and be sure the terminal
board wiring to the outdoor unit and BS unit are properly
matched. If wiring and piping between the outdoor unit and
an indoor unit are mismatched, the system may cause a
malfunction.

Refer to the installation manual attached to the outdoor unit
for the size of power supply electric wire connected to the
outdoor unit, the capacity of the circuit breaker and switch,
and wiring instructions.

Be sure to ground the air conditioner.
DANGER
Do not connect the ground wire to water pipes, telephone
wires or lightning rods because incomplete grounding could
cause a severe electrical shock and hazard resulting in severe
injury or death.
Do not connect the ground wire to gas pipes because a gas
leak could result in an explosion and lead to severe injury or
death.
9-2 Electrical characteristics
MCA : Min. circuit Amps (A)
MFA : Max. Fuse Amps (A)
kW : Fan Motor Rated Output (kW)
FLA : Full Load Amps (A)
NOTE
For details, refer to "Electrical data".
9-3 Specifications for field supplied fuses and
wire
NOTE

For details, refer to the chapter "Wiring example" on page 31.

Allowable length of transmission wiring between indoor and
outdoor units, and between the indoor unit and the remote
controller is as follows:
• Outdoor unit - indoor unit:
≤
3280 ft
(total wiring length: 6560 ft).
• Indoor unit - remote controller:
≤
1640 ft
• Insulated thickness:
≥
1/16 in
10. WIRING EXAMPLE AND HOW TO SET
THE REMOTE CONTROLLER
10-1 How to connect wiring (See figure 25)

Power supply wiring and ground wire
Remove the switch box lid and connect wires of matching
number to the power supply terminal block (3P) inside.
(See E). And connect the ground wire to the terminal block.
In doing this, pull the wires inside through the hole in con-
duit mounting plate and the hole in the side plate of the unit.
Fix the wires securely with a field supplied clamp. (See B).
Give enough slack to the wires between the clamp and
power supply terminal block.
After connection, attach the sealing material. (See F). Be
sure to attach it to prevent infiltration of water from the out-
side. Make sure that the slit in the sealing material is posi-
tioned vertically.
After attaching the sealing, screw the conduit mounting
plate using the 2 delivered screws (M4) to the side of the
unit where the power supply cables enter the unit. (See F
and figure below).
Units
Power
supply
Fan motor
Model Hz Volts
Voltage
range
MCA MFA kW FLA
FXZQ07
60 208-230
≤
253
≤
188
0.8 15 0.055 0.6
FXZQ09 0.8 15 0.055 0.6
FXZQ12 0.8 15 0.055 0.6
FXZQ18 0.9 15 0.055 0.7
Power supply wiring
Remote controller wiring
and Transmission wiring
Model Field fuses Size, length Wire Size
FXZQ07
15A
Wire size and
length must
comply with
local codes.
Sheathed
wire
(2 wire)
AWG18-16
FXZQ09
FXZQ12
FXZQ18
1 Hole in the side plate of
the unit
2 Sealing material
3 Conduit mounting plate
4 Screw (M4)
2 1 3 4