Daikin FXFQ20P8VEB Installation And Operation Manual Download

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Installation and operation manual

FXFQ20~125P8VEB

VRV System air conditioners

4PW44997-1

When connecting wires of the same gauge, connect them
according to the figure.

Use the specified electric wire. Connect the wire securely to the
terminal. Lock the wire down without applying excessive force to
the terminal. Use torques according to the table below.

When attaching the control box lid, make sure not to pinch
any wires.

After all wiring connections are done, fill in any gaps in the
casing wiring holes with putty or insulation material (field
supply) thus to prevent small animals or dirt from entering the
unit from outside and causing short circuits in the control box.

Keep total current of crossover wiring between indoor units less
than 12 A. Branch the line outside the terminal block of the unit
in accordance with electrical equipment standards, when using
two power wiring of a gauge greater than 2 mm

(Ø1.6).

The branch must be sheathed in order to provide an equal or
greater degree of insulation as power supply wiring itself.

Do not connect wires of different gauge to the same grounding
terminal. Looseness in the connection may deteriorate the
protection.

Remote controller wiring and unit transmission wiring should be
located at least 50 mm away from power supply wiring. Not
following this guideline may result in malfunction due to
electrical noise.

For the remote controller wiring, refer to the "Installation manual
of the remote controller" supplied with the remote controller.

Never connect the power supply wiring to the terminal block for
transmission wiring. This mistake could damage the entire system.

Use only specified wires and tightly connect wires to the
terminals. Be careful that wires do not place external stress on
the terminals. Keep wiring in neat order so that they do not
obstruct other equipment such as popping open the service
cover. Make sure the cover closes tight. Incomplete connections
could result in overheating, and in the worse case, electric shock
or fire.

IRING

EXAMPLE

Fit the power supply wiring of each unit with a switch and fuse as
shown in

figure 17

Complete system example (3 systems)

See figures

and

When using 1 remote controller for 1 indoor unit. (Normal
operation)

(See figure 13)

For group control or use with 2 remote controllers

(See figure 14)

When including BS unit

(See figure 15)

Precautions

A single switch can be used to supply power to units on the
same system. However, branch switches and branch circuit
breakers must be selected carefully.

For a group control remote controller, choose the remote
controller that suits the indoor unit which has the most functions.

Do not ground the equipment on gas pipes, water pipes,
lightning rods or crossground with telephones. Improper
grounding could result in electric shock.

NSTALLATION

THE

DECORATION

PANEL

Refer to the installation manual delivered with the decoration panel.

After installing the decoration panel, ensure that there is no space
between the unit body and decoration panel. Otherwise air may leak
through the gap and cause dewdrop.

IELD

SETTING

Field setting must be made from the remote controller in accordance
with the installation condition.

■

Setting can be made by changing the "Mode number", "First
code No." and "Second code No.".

■

For setting and operation, refer to the "Field setting" in the
installation manual of the remote controller.

Tightening torque (N•m)

Terminal block for unit transmission and
remote controller

0.79~0.97

Terminal block for power supply

1.18~1.44