Daikin FXLQ18MVJU Specifications download pdf (Page 23)

EDUS39-600-F7 Installation

FXLQ-M / FXNQ-M 22

Not recommendable but in case of emergency

You must use a torque wrench but if one is not available,

you may follow the installation method mentioned below.

After the work is finished, make sure to check that

there is no gas leak.

When you keep on tightening the flare nut with a spanner,

there is a point where the tightening torque suddenly

increases. From that position, further tighten the flare nut at

the angle shown below:

Ta bl e 3

(in.)

7. DRAIN PIPING WORK

Install the drain pipe as shown below and take measures

against condensate. Improperly installed piping can

leak on furniture and belongings.

(1) Install the drain pip-

ing:

Connect the drain

hose (1) using the

attached hose and

parts, as shown in the

drawing to the right.

• If converging multiple drain pipes, install according to the

procedure shown below.

Select converging drain pipes with gauges suitable for the

operating capacity of the unit.

(2) After piping work is finished, check that drainage flows

smoothly.

• Add approximately 1 liter of water slowly from the air

outlet and check drainage flow.

(3) Be sure to insulate all indoor pipes

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 pipes and corrode

the heat exchanger.

• Keep in mind that water collecting on the drain pipe causes

blockage.

8. ELECTRIC WIRING WORK

8-1 GENERAL INSTRUCTIONS

• All field supplied parts and materials, electric works must

conform to local codes.

• Use copper wire only.

• Follow the WIRING DIAGRAM attached to the unit to wire

the outdoor unit, indoor units and the remote controllers.

For details on hooking up the remote controller, refer to the

INSTALLATION MANUAL OF REMOTE CONTROLELR.

• All wiring must be performed by an authorized electrician.

• This system consists of multiple indoor units. Mark each

indoor unit as unit A, unit B, and so forth, and be sure the

terminal block wiring to the outdoor unit and BS unit is prop-

erly matched. If controls wiring and piping between the

outdoor and indoor units are mismatched, a communica-

tions malfunction is likely. A circuit breaker capable of shut-

ting down the power supply to the entire system must be

installed.

• Be sure to ground the air conditioner.

DANGER

• Do not ground units to water pipes, telephone wires, or

lightning rods because incomplete grounding and lighting

strikes can cause a severe shock hazard resulting in

severe injury or death., Do not ground units to gas pipes

because a gas leak can result in an explosion leading to

severe injury or death.

8-2 ELECTRICAL CHARACTERISTICS

MCA: Min. Circuit Amps (A); MFA: Max. Fuse Amps (A)

W: Fan Motor Rated Output (W); FLA: Full Load Amps (A)

8-3 SPECIFICATIONS FOR FIELD SUPPLIED

FUSES AND WIRE

Pipe size

Further tightening

angle

Recommended arm length

of tool

φ 1/4” 60 to 90 degrees Approx. 5 7/8

φ 3/8” 60 to 90 degrees Approx. 7 7/8

φ 1/2” 30 to 60 degrees Approx. 9 13/16

φ 5/8” 30 to 60 degrees Approx. 11 13/16

3/4 drain pipe

2 or more

Drip pan

Metal clamp

(accessory) (2)

Drain hose

(accessory) (1)

Cut to suitable length

(length : in.)

Piping process

inside unit

Tilt

Slope downwards at a gradient

of at least 1/100

Units

Power

supply

Fan motor

Model Hz Volts

Voltage

range

MCA MFA W FLA

FXLQ12MVJU,

FXNQ12MVJU

208-

230

Max. 253

Min. 187

0.5 15 25 0.4

FXLQ18 · 24MVJU,

FXNQ18 · 24MVJU

0.6 15 35 0.5

Model

Power supply wiring

Remote controller wiring

Transmission wiring

Field

fuses

Size Wire Size

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 29

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Daikin FXLQ18MVJU Specifications Page 23

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