Daikin FXUQ100MAV1 Installation Manual Download Page 13

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English

[Caution]

Drain piping connections

• Do not connect the drain piping directly to sewage pipes that

smell of ammonia. The ammonia in the sewage might enter
the indoor unit through the drain piping and corrode the heat
exchanger.

WHEN ELECTRIC WIRING WORK IS FINISHED

• Check drainage flow during Cooling operation, explained

under “11. TEST OPERATION”.

WHEN ELECTRIC WIRING WORK IS NOT FINISHED

CAUTION

• Electrical wiring work should be done by a certified electrician.
• If someone who does not have the proper qualifications per-

forms the work, perform the following after the test run is
complete.

• Remove the control box lid and change the emergency

switch above the PC board assembly of the indoor unit from
“NORM.” to “EMERG.”. Connect the single-phase power
supply (1, 3) and ground wire to the inter-unit wiring (50Hz
220-240V) terminal block and confirm drain operation.
Be sure to change the switch before turning on the power.

(Refer to Fig. 32)

CAUTION

• Clamp solidly to clamp C to tension is not added to the

wiring connections.

• Be aware that the fan will turn during the operation.

• After confirming drainage, turn off the power and be sure to

change the emergency switch back to “NORM.”.

ELECTRIC WIRING WORK

8-1

GENERAL INSTRUCTIONS

• All field supplied parts and materials and electric works

must conform to local codes.

• Use copper wire only.
• For electric wiring work, refer also to “WIRING DIAGRAM”

attached to the control box lid.

• For remote controller wiring details, refer to the installation

manual attached to the remote controller.

• All wiring must be performed by an authorized electrician.

• One BEV unit is connected to one indoor unit. Mark each

indoor unit and BEV unit as unit A, unit B..., and be sure the
terminal block wiring to the outdoor unit and BS unit are
properly matched. If wiring and piping between the outdoor
unit and an indoor unit and BEV unit are mismatched, the
system may cause a malfunction.

• A circuit breaker capable of shutting down power supply to

the entire system must be installed.

• Refer to the installation manual attached to the outdoor unit

for the size of power supply wiring connected to the outdoor
unit, the capacity of the circuit breaker and switch, and wir-
ing instructions.

• Be sure to ground the air conditioner
• Do not connect the ground wire to gas and water pipes,

lightning rods, or telephone ground wires.
• Gas pipes: might cause explosions or fire if gas leaks.
• Water pipes: no grounding effect if hard vinyl piping is

used.

• Telephone ground wires or lightning rods: might cause

abnormally high electric potential in the ground during
lighting storms.

• Specifications for field wire

The remote controller wiring should be procured locally. Refer
to the Table 4 when preparing one.

Table 4

NOTE

1. Shows only in case of protected pipes. Use H07RN-F in case

of no protection.

2. Insulated thickness : 1mm or more
3. Refer to the installation manual of the BEV unit.

<Methods of wiring units and connecting remote control-
ler wiring> (Refer to Fig. 33)

NOTE

1. All wiring except for the remote controller wires is polarized

and must match the terminal symbol.
• Wiring the units connections

Remove the control box lid, and align the phases with
those of the power supply terminal block inside to con-
nect. Securely fix the wires with the included clamp mate-
rial A, then fix them with the clamp material C likewise.

• Remote controller wiring connections

Connect to the remote controller terminal block. (no polarity)
Securely fix the remote controller wiring with the included
clamp material B, then fix it with the clamp material D like-
wise.

Inter-unit wiring terminal block

Indoor PC

board

assembly

Single phase power supply

Fig. 32

Clamp C

Tab

Inter-unit
wiring
terminal
block

1 2 3

Clamp C

NORM. EMERG.