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Installation and operation manual

4

FXZQ20~50M8V1B

VRV System air conditioners

4PW25085-1C

When connecting the flare nut, coat the flare both inside and
outside with refrigerating ether or ester oil and initially tighten by
hand 3 or 4 turns before tightening firmly.
Coat here with ether oil or ester oil

Check the pipe connector for gas leaks, then insulate it as
shown in 

figure 12

.

Wrap the sealing pad only around the insulation for the joints on
the gas piping side.

If the refrigerant gas leaks during the work, ventilate the area. A
toxic gas is emitted by the refrigerant gas being exposed to a fire.

Finally make sure there is no refrigerant gas leak. A toxic gas
may be released by the refrigerant gas leaking indoor and being
exposed to flames from an area heater, cooking stove, etc.

D

RAIN

 

PIPING

 

WORK

Rig the drain piping as shown in figure and take measures against
condensation. Improperly rigged piping could lead to leaks and
eventually wet furniture and belongings.

1.

Install the drain pipes.

Keep piping as short as possible and slope it downwards so that
air may not remain trapped inside the pipe. 

Keep pipe size equal to or greater than that of the connecting
pipe 

(PVC pipe, nominal diameter 20 mm, outside diameter

26 mm)

.

Insert the drain hose into the drain socket up to the base, and
tighten the clamp securely within the portion of a grey tape.

Tighten the clamp until the screw head is less than 4 mm from the
hose. 

Insulate the drain hose inside the building.

If the drain hose cannot be sufficiently set on a slope, fit the hose
with drain raising piping (field supply). 

Make sure that heat insulation work is executed on the following 2
spots to prevent any possible water leakage due to dew
condensation.

Indoor drain pipe

Drain socket

Wrap the supplied sealing pad over the clamp and
drain hose to insulate.

How to perform piping 

(See figure 15)

Precautions 

Install the drain raising pipes at a height of less than 545 mm.

Install the drain raising pipes at a right angle to the indoor unit
and no more than 300 mm from the unit.

NOTE

Not recommended but in case of emergency.

You must use a torque wrench but if you are obliged to
install the unit without a torque wrench, 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 within the angle shown below:

1

Liquid pipe

2

Gas pipe

3

Insulation for fitting of liquid line (supplied with the unit) 

4

Insulation for fitting of gas line (supplied with the unit) 

5

Clamps (use 2 clamps per insulation)

6

Small sealing pad (supplied with the unit)

Be sure to insulate any field piping all the way to the
piping connection inside the unit. Any exposed piping
may cause condensation or burns if touched.

Pipe size

Further 

tightening angle

Recommended arm 

length of tool

Ø6.4 (1/4")

60~90°

±150 mm

Ø12.7 (1/2")

30~60°

±250 mm

1

Hanging bar

2

1/100 gradient

1

Metal clamp
(supplied with the unit)

2

Drain hose 
(supplied with the unit)

3

Grey tape 
(field supply)

1

Metal clamp (supplied with the unit)

2

Large sealing pad (supplied with the unit)

1

Ceiling slab

2

Hanger bracket

3

Drain raising pipe

4

Raising section

5

Drain hose (supplied with the unit)

6

Metal clamp (supplied with the unit)

NOTE

The incline of attached drain hose should be
75 mm or less so that the drain socket does not
have to stand additional force.

To  ensure a downward slope of 1:100, install
hanging bars every 1 to 1.5 m.

If unifying multiple drain pipes, install the pipes as
shown in 

figure 10

Select converging drain pipes

whose gauge is suitable for the operating capacity
of the unit.

1-1.5 m

1

2

2

1

3

4 mm

1

2

1

T-joint converging drain pipes

Summary of Contents for FXZQ20M8V1B

Page 1: ...INSTALLATION AND OPERATION MANUAL FXZQ20M8V1B FXZQ25M8V1B FXZQ32M8V1B FXZQ40M8V1B FXZQ50M8V1B System air conditioners ...

Page 2: ... 4 50 100 2 2 3 4 5 1 1 2 45 45 5 6 533 3 575 2 585 660 1 700 4 700 2 585 660 3 575 4 533 1 585 660 8 7 20 20 180 2 1500 1500 1500 2500 1500 1500 1500 1500 1 2 2 1 2 3 3 2 1 4 2 3 4 1 2 1 2 2 1 295 5 4 2 1 3 6 16 1 2 3 4 5 6 7 8 9 10 10 11 11 1 2 3 4 5 6 7 8 9 10 11 1x 1x 1x 8x 4x 1x 1x 1x 1x 2x 1x 2 3 1 4 5 6 7 8 10 9 11 12 15 14 13 17 16 ...

Page 3: ... LN P1 P2 P1 P2 F1 F2 T1 T2 3 4 2 1 SETTING 2 1 4 3 23 24 1 2 3 4 5 6 7 8 9 10 11 12 13 13 1 2 3 8 7 4 4 5 5 5 6 6 6 5 21 3 2 1 IN D OUT D F1 F2 F1 F2 Control box IN D OUT D F1 F2 F1 F2 Control box P1 P2 LN P1 P2 F1 F2 T1 T2 L N 6 3 4 2 5 1 L N IN D OUT D F1 F2 F1 F2 Control box LN P1 P2 P1 P2 F1 F2 T1 T2 LN P1 P2 F1 F2 T1 T2 LN P1 P2 F1 F2 T1 T2 LN P1 P2 F1 F2 T1 T2 P1 P2 P1 P2 20 18 19 22 20 21 ...

Page 4: ...ych pod warunkiem że używane są zgodnie z naszymi instrukcjami 18 sunt în conformitate cu următorul următoarele standard e sau alt e document e normativ e cu condiţia ca acestea să fie utilizate în conformitate cu instrucţiunile noastre 19 skladni z naslednjimi standardi in drugimi normativi pod pogojem da se uporabljajo v skladu z našimi navodili 20 on vastavuses järgmis t e standardi te ga või t...

Page 5: ...tchens Plastic parts may deteriorate Where corrosive gas like sulphurous gas exists Copper tubing and brazed spots may corrode Where volatile flammable gas like thinner or gasoline is used Where machines generating electromagnetic waves exist Control system may malfunction Where the air contains high levels of salt such as air near the ocean and where voltage fluctuates a lot e g in factories Also...

Page 6: ... more than 2 5 m so that the user cannot easily touch 3 Air flow directions Select the air flow directions best suited to the room and point of installation For air discharge in 2 or 3 directions it is necessary to make field settings by means of the remote controller and to close the air outlet s Refer to the installation manual of the optional blocking pad kit and to the chapter Field setting on...

Page 7: ...e unit tilted The indoor unit is equipped with a built in drain pump and float switch If the unit is tilted against condensate flow the float switch may malfunction and cause water to drip Check if the unit is levelled at all four corners with a water level or a water filled vinyl tube as shown in figure 9 5 Remove the paper pattern for installation For new ceilings only REFRIGERANT PIPING WORK Fo...

Page 8: ... and drain hose to insulate How to perform piping See figure 15 Precautions Install the drain raising pipes at a height of less than 545 mm Install the drain raising pipes at a right angle to the indoor unit and no more than 300 mm from the unit NOTE Not recommended but in case of emergency You must use a torque wrench but if you are obliged to install the unit without a torque wrench you may foll...

Page 9: ...ion 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 Do not connect the ground wire to gas pipes water pipes lightning rods or telephone ground wires Gas pipes might cause explosions or fire if gas leaks Water pipes no grounding ef...

Page 10: ... branch must be sheathed in order to provide an equal or greater degree of insulation as power supply wiring itself 3 Do not connect wires of different gauge to the same grounding terminal Looseness in the connection may deteriorate the protection 4 Remote controller cords and wires connecting the units should be located at least 50 mm away from power supply wiring Not following this guideline may...

Page 11: ...nsorif installed AND the remote controller sensor See note 5 6 Use unit sensor only or remote sensor if installed See note 5 6 Use remote controller sensor only See note 5 6 3 Setting for display of time between 2 filter cleaning display indications Display Do not display 5 Information to I manager I touch controller Only unit sensor value or remote sensor value if installed Sensor value as set by...

Page 12: ...efer to the manual of each optional controller for centralized control INSTALLATION OF THE DECORATION PANEL Read the chapter Test operation on page 8 before making a test run without attaching 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 Otherw...

Page 13: ...TO CLEAN AIR FILTER display disappears For details refer to the operation manual of the outdoor unit How to clean the air outlet and outside panels Clean with a soft cloth When it is difficult to remove stains use water or neutral detergent When the blade is extremely contaminated remove it as below and clean it How to clean the suction grill 1 Open the suction grill Push both knobs simultaneously...

Page 14: ...ED H2P LIGHT EMITTING DIODE SERVICE MONITOR GREEN H3P LIGHT EMITTING DIODE SERVICE MONITOR RED H4P LIGHT EMITTING DIODE SERVICE MONITOR ORANGE SS1 SELECTOR SWITCH MAIN SUB SS2 SELECTOR SWITCH WIRELESS ADDRESS SET CONNECTOR FOR OPTIONAL PARTS X16A CONNECTOR ADAPTOR FOR WIRING X18A CONNECTOR ADAPTOR FOR ELECTRICAL APPENDICES FIELD WIRING BLK BLACK PNK PINK TERMINAL BLU BLUE RED RED CONNECTOR GRN GRE...

Page 15: ...25 27 29 28 26 T1 T2 10 15 mm A D 1 2 3 4 5 6 7 8 15 11 9 15 10 15 8 15 10 15 B 11 12 12 13 14 1 0 1 5 m m C E REMOTE CONTROL TRANSMISSION WIRING FORCED OFF L N L N 25 26 27 28 29 ...

Page 16: ...Zandvoordestraat 300 B 8400 Oostende Belgium 4PW25085 1C ...

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