Fujitsu 1106985 Panduan Instalasi - Halaman 2

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OUTDOOR UNIT

OUTDOOR UNIT INSTALLATION

Install the unit where it will not be tilted by more than 3°. However, do not install the unit with it tilted to-

wards the side containing the compressor.

When installing the outdoor unit where it may exposed to strong wind, fasten it securely.

(1) Outdoor unit to be fasten with bolts at the four places

indicated by the arrows without fail.

Drain cap

Bottom side

mounting place

25-9/16"

(650 mm)

Drain pipe

4-ø 12 hole

mounting place

Bolt

(2) F i x s e c u r e l y w i t h

Nut

b o l t s o n a s o l i d

block. (Use 4 sets of

commercially avail-

able M10 bolt, nut

and washer.)

CONNECTING THE PIPE

1. CONNECTION PIPES

Outdoor unit

Valve cover removal.

• Remove the one mounting screw.

• Remove the valve cover by sliding upward.

Valve cover

Hook (4 places)

(1) Detach the caps and plugs from the pipes.

(2) Centering the pipe against port on the outdoor unit, turn the

flare nut with your hand.

To prevent gas leakage, coat the flare

surface with alkylbenzene oil (HAB).

Do not use mineral oil.

(3) Tighten the flare nut of the connection pipe at the outdoor unit

valve connector.

3-way valve

(Liquid)

Flare nut

Connection pipe

(Liquid)

3-way valve

(Gas)

Flare nut

Connection pipe

(Gas)

ELECTRICAL WIRING (OUTDOOR UNIT)

CAUTION

When connecting the power supply cord, make sure that

the phase of the power supply matches with the phase of

the terminal board. If the phases do not match, the

compressor will rotate in reverse and will not be able to

compress.

(1) Service cover removal

• Remove the two mounting screws.

• Remove the service cover by pushing downwards.

(2) Fasten the power supply cord and the connection cord to the

conduit holder using the lock nut.

(open the knock out holes if necessary)

(3) Connect the power supply cord and the connection cord to

terminal.

(4) Fasten the power supply cord and connection cord with cord

clamp.

Cord clamp

Power supply cord

Connection cord

(indoor unit and

outdoor unit

connection cord)

INDOOR

OUTDOOR UNIT

14AWG

INDOOR UNIT

(Inter-unit)

Power lines

TERMINAL

230/208 V

DISCON-

NECT

SWITCH

(FIELD

SUPPLY)

Grounding

line

Indoor unit

Outdoor unit

terminal block

Earth screw

Disconnect switch

Power supply line

NOTE:

Factory installed protective inline fuses for indoor units' conductors

are installed on the Power Supply PCB.

9374995431_IM_EN.indd 2

WARNING

(3) Since the drain water flows out of the outdoor unit during heat-

ing operation, install the drain pipe and connect it to a commer-

cial 5/8" (16 mm) hose. (Reverse cycle model only)

(4) When installing the drain pipe, plug all the holes other than the

drain pipe mounting hole in the bottom of the outdoor unit with

putty so there is no water leakage. (Reverse cycle model only)

Drain pipe mounting hole

Drain pipe

CAUTION

Block

When the outdoor temperature is 32 °F (0 °C) or less, do not use the

accessory drain pipe and drain cap. If the drain pipe and drain cap

are used, the drain water in the pipe may freeze in extremely cold

weather. (Reverse cycle model only)

(4) When the flare nut is tightened properly by your hand, use a

torque wrench to finally tighten it.

Holding spanner

Body side

90°

Torque wrench

Flare nut tightening torque

Flare nut [in. (mm)]

Tightening torque [lbf·ft (N·m)]

3/8 (9.52) dia.

23.6 to 31.0 (32 to 42)

5/8 (15.88) dia.

46.5 to 55.3 (63 to 75)

Direction of

the service

Service cover

panel removal

Control box

Lock

nut

Terminal

Power supply

Keep the earth wire longer than the other wires.

Earth wire

WARNING

Disconnect switch for over current protection given in

the table below is to be installed between the indoor

unit and the outdoor unit.

Disconnect switch

20A

CAUTION

Be sure to comply with local codes while running the

L1 L2

wire from the indoor unit to the outdoor unit (size of

Earth screw

wire and wiring method, etc.).

Every wire must be connected firmly.

No wire should be allowed to touch refrigerant tubing,

the compressor or any moving part.

Loose wiring may cause the terminal to overheat or

result in unit malfunction. A fire hazard may also exist.

Therefore, be sure all wiring is tightly connected.

Connect wires to the matching numbers of terminals.

2. VACUUM

(1) Remove the cap, and connect the gauge manifold and the vacuum pump to the charging valve by the service hoses.

(2) Vacuum the indoor unit and the connecting pipes until the pressure gauge indicates -0.1 MPa (-76 cmHg).

(3) When -0.1 MPa (-76 cmHg) is reached, operate the vacuum pump for at least 60 minutes.

(4) Disconnect the service hoses and fit the cap to the charging valve to the specified torque.

(5) Remove the blank caps, and fully open the spindles of the 2-way and 3-way valves with a hexagon wrench [Torque: 6~7 N·m (60 to 70

kgf·cm)].

(6) Tighten the blank caps of the 2-way valve and 3-way valve to the specified torque.

3/8" (9.52 mm)

Blank

cap

5/8" (15.88 mm)

Charging port cap

Connecting pipe

Base

Outdoor unit

Service hose

with valve core

Cap

Do not purge the air with refrigerants, but use a vacuum pump to vacuum the installation!

There is no extra refrigerant in the outdoor unit for air purging!

Use a vacuum pump and gauge manifold and charging hose for R410A exclusively.

Using the same vacuum for different refrigerants may damage the vacuum pump or the unit.

3. ADDITIONAL CHARGE

Refrigerant suitable for a piping length of 66ft(20m) is

charged in the outdoor unit at the factory.

When the piping is longer than 66ft(20m), additional

charging is necessary.

For the additional amount, see the table below.

When moving and installing the air conditioner, do not mix gas other than the specified refrigerant R410A in-

side the refrigerant cycle.

When charging the refrigerant R410A, always use an electronic balance for refrigerant charging (to measure

the refrigerant by weight).

When charging the refrigerant, take into account the slight change in the composition of

the gas and liquid phases, and always charge from the liquid phase side whose composi-

tion is stable.

Add refrigerant from the charging valve after the completion of the work.

If the units are further apart than the maximum pipe length, correct operation cannot be guaranteed.

4. GAS LEAKAGE INSPECTION

After connecting the piping, check the all joints for gas leakage with gas leak detector.

When inspecting gas leakage, always use the vacuum pump for pressure. Do not use nitrogen gas.

Use ring terminals and tighten the terminal screws to the specified torques, otherwise, abnormal overheating

may be produced and possibly cause heavy damage inside the unit.

Match the terminal block numbers and connection cord colors with those of the outdoor unit. Erroneous wir-

ing may cause burning of the electric parts.

Connect the connection cords firmly to the terminal block. Imperfect installation may cause a fire.

Hook

(3 places)

Always fasten the outside covering of the connection cord with the cord clamp. (If the insulator is chafed,

electric leakage may occur.)

Securely earth the power cord plug.

Do not use the earth screw for an external connector. Only use for interconnection between two units.

HOW TO CONNECT THE WIRE TO THE TERMINALS

(1) Use ring terminals with insulating sleeves as shown in the

figure below to connect to the terminal block.

(2) Securely clamp the ring terminals to the wires using an

appropriate tool so that the wires do not come loose.

(3) Use the specified wires, connect them securely, and fasten

them so that there is no stress placed on the terminals.

(4) Use an appropriate screwdriver to tighten the terminal screws.

Do not use a screwdriver that is too small, otherwise, the screw

heads may be damaged and prevent the screws from being

properly tightened.

(5) Do not tighten the terminal screws too much, otherwise, the

Inter-unit line

screws may break.

(6) See the table below for the terminal screw tightening torques.

Tightening torque

M4 screw

1.2 to 1.8 N·m (12 to 18 kgf·cm)

M5 screw

2.0 to 3.0 N·m (20 to 30 kgf·cm)

PUMP DOWN OPERATION (FORCED COOLING OPERATION)

Power supply

To avoid discharging refrigerant into the atmosphere at the time of relocation or disposal, recover refrigerant by doing the cooling operation

cord or connec-

or forced cooling operation according to the following procedure. (When the cooling operation cannot start in winter, and so on, start the

tion cord

forced cooling operation.)

(1) Do the air purging of the charge hose by connecting the charging hose of gauge manifold to the charging port of 3-way valve (large) and

opening the low-pressure valve slightly.

(2) Close the valve stem of 3-way valve (small) completely.

(3) Start the cooling operation or following forced cooling operation.

When using the remote controller

Press the TEST RUN button after starting the cooling operation by the remote controller.

The operation indicator lamp and timer indicator lamp will begin to flash simultaneously during test run.

When using the MANUAL AUTO button of the indoor unit (The remote controller is lost, and so on.)

Keep on pressing the MANUAL AUTO button of the indoor unit for more than 10 seconds.

(The forced cooling operation cannot start if the MANUAL AUTO button is not kept on pressing for more than 10 seconds.)

(4) Close the valve stem of 3-way valve (large) when the reading on the compound pressure gauge becomes 0.05~0 MPa (0.5~0 kg/cm

(5) Stop the operation.

• Press the START/STOP button of the remote controller to stop the operation.

• Press the MANUAL AUTO button when stopping the operation from indoor unit side.

(It is not necessary to press on keeping for more than 10 seconds.)

During the pump-down operation, make sure that the compressor is turned off before you remove the refrigerant piping.

Do not remove the connection pipe while the compressor is in operation 3-way valve open. This may cause abnormal pres-

sure in the refrigeration cycle that leads to breakage and even injury.

Install heat insulation around both the gas and liquid pipes. Failure to do so may cause water leaks.

Use heat insulation with heat resistance above 248 °F (120 °C). (Reverse cycle model only)

In addition, if the humidity level at the installation location of the refrigerant piping is expected to exceed 70%, install heat

insulation around the refrigerant piping. If the expected humidity level is 70-80%, use heat insulation that is 9/16" (15 mm) or

thicker and if the expected humidity exceeds 80%, use heat insulation that is 13/16" (20 mm) or thicker.

If heat insulation is used that is not as thick as specified, condensation may form on the surface of the insulation.

In addition, use heat insulation with heat conductivity of 0.045 W/(m·K) or less [at 68 °F (20 °C)].

Tightening torque

20 to 25 N·m (200 to 250 kgf·cm)

Gauge manifold

30 to 35 N·m (300 to 350 kgf·cm)

12.5 to 16 N·m (125 to 160 kgf·cm)

Blank cap

Hexagon wrench

Use a 3/16" (4 mm)

hexagon wrench.

3-way valve

Charging port

Service hose

CAUTION

Piping length

Additional charge

CAUTION

WARNING

Strip

3/8" (10 mm)

Wire

CAUTION

Use a clean gauge mani-

fold and charging hose

for R410A exclusively.

Vacuum pump

66ft

99ft

131ft

165ft

Rate

(20m)

(30m)

(40m)

(50m)

14.2oz

1lb 12oz

2lb 10oz

0.43oz/ft

None

(400g)

(800g)

(1200g)

(40g/m)

Gas

R410A

Liquid

Ring terminal

Sleeve

Screw with special washer

Ring terminal

Terminal board

Terminal block

Screw with special washer

Ring terminal

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