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English

CONTENTS

1.  SAFETY PRECAUTIONS ................................................. 1
2.  BEFORE INSTALLATION ................................................. 2
3.  CARRY-IN METHOD ........................................................ 3
4.  INSTALLATION SITE ....................................................... 3
5.  CAUTION AT INSTALLATION .......................................... 4
6.  REFRIGERANT PIPING ................................................... 4
7.  DRAIN PIPING ................................................................. 6
8.  ELECTRIC WIRING.......................................................... 6
9.  FIELD SETTING AND CONTROL WIRING ......................... 9
10.  TRIAL OPERATION .............................................................10

1.  SAFETY PRECAUTIONS

Be sure to follow this “SAFETY PRECAUTIONS”.
This product comes under the term “appliances not 
accessible to the general public”.
This is a class A product. In a domestic environment this 
product may cause radio interference in which case the user 
may be required to take adequate measures.

This manual classifies the precautions into WARNINGS and 

CAUTIONS.
Be sure to follow all the precautions below: They are all 
important for ensuring safety.

 WARNING .........  Indicates a potentially hazardous 

situation which, if not avoided, could 
result in death or serious injury.

 CAUTION ..........  Indicates a potentially hazardous 

situation which, if not avoided, may 
result in minor or moderate injury. 
It may also be used to alert against 
unsafe practices.

• 

After the installation is completed, test the air conditioner 
and check if the air conditioner operates properly. Give 
the user adequate instructions concerning the use and 
cleaning of the indoor unit according to the Operation 
Manual. Ask the user to keep this manual and the 
Operation Manual together in a handy place for future 
reference.

 WARNING

•  Ask your local dealer or qualified personnel to carry out 

installation work.
Improper installation may result in water leakage, electric 

shocks or a fire.

• 

Perform installation work in accordance with this installation 
manual.
Improper installation may result in water leakage, electric 

shocks or a fire.

• 

Consult your local dealer regarding what to do in case of 
refrigerant leakage.
When the air conditioner is installed in a small room, it is 
necessary to take proper measures so that the amount of 
any leaked refrigerant does not exceed the concentration 
limit in the event of a leakage.
Otherwise, this may lead to an accident due to oxygen 

deficiency.

•  Be sure to use only the specified parts and accessories for 

installation work.

Failure to use the specified parts may result in the air 

conditioner falling down, water leakage, electric shocks, a 

fire, etc.

• 

Install the air conditioner on a foundation that can 
withstand its mass.
It may lead to vibration of indoor units and cause 
unpleasant chattering noise.

•  Carry out the specified installation work in consideration of 

strong winds, typhoons, or earthquakes.
Improper installation may result in an accident such as air 
conditioner falling.

• 

Make certain that all electrical work is carried out by 

qualified personnel according to the applicable legislation 

(note 1) and this installation manual, using a separate 
circuit.
In addition, even if the wiring is short, make sure to use 

a wiring that has sufficient length and never connect 
additional wiring to make the length sufficient.
Insufficient capacity of the power supply circuit or improper 
electrical construction may lead to electric shocks or a fire.

(note 1)  applicable legislation means “All international, 

national and local directives, laws, regulations 
and/or codes which are relevant and applicable for 
a certain product or domain”.

• 

Earth the air conditioner.
Do not connect the earth wiring to gas or water piping, 
lightning conductor or telephone earth wiring.

Incomplete earthing may cause electric shocks or a fire.

• 

Be sure to install an earth leakage circuit breaker.

Failure to do so may cause electric shocks and a fire.

• 

Disconnect the power supply before touching the electric 
components.
If you touch the live part, you may get an electric shocks.

•  Make sure that all wiring is secure, using the specified 

wiring and ensuring that external forces do not act on the 
terminal connections or wiring.

Incomplete connection or fixing may cause an overheat or 
a fire.

• 

When wiring between the indoor and outdoor units, and 
wiring the power supply, form the wiring orderly so that the 
control box lid can be securely fastened.
If the control box lid is not in place, overheat of the 

terminals, electric shocks or a fire may be caused.

• 

If refrigerant gas leaks during installation work, ventilate 
the area immediately.
Toxic gas may be produced if refrigerant gas comes into 

contact with a fire.

• 

After completing the installation work, check to make sure 
that there is no leakage of refrigerant gas.
Toxic gas may be produced if refrigerant gas leaks into the 

room and comes into contact with a source of a fire, such 

as a fan heater, stove or cooker.

• 

Never directly touch any accidental leaking refrigerant. 
This could result in severe wounds caused by frostbite.

 CAUTION

• 

Install drain piping according to this installation manual to 
ensure good drainage, and insulate the piping to prevent 
condensation.
Improper drain piping may cause water leakage, make the 
furniture get wet.

Installation 

manual

VRV System 

air conditioner

FXVQ125MY1  FXVQ200MY1  FXVQ250MY1  FXVQ400MY1  FXVQ500MY1  FXVQ500MY16

01_EN_3P345056-4F.indd   1

9/3/2015   15:00:21

Summary of Contents for FXVQ125MY1

Page 1: ...S Floor standing duct type FXVQ125MY1 FXVQ200MY1 FXVQ250MY1 FXVQ400MY1 FXVQ500MY1 FXVQ500MY16 SYSTEM Air Conditioners CAREFULLY READ THESE INSTRUCTIONS BEFORE INSTALLATION KEEP THIS MANUAL IN A HANDY PLACE FOR FUTURE REFERENCE ...

Page 2: ...out the specified installation work in consideration of strong winds typhoons or earthquakes Improper installation may result in an accident such as air conditioner falling Make certain that all electrical work is carried out by qualified personnel according to the applicable legislation note 1 and this installation manual using a separate circuit In addition even if the wiring is short make sure ...

Page 3: ...ap Insulation for Drain plug Clamp Hanging bolt for fan motor Quantity 1 pc 125 250 type For each 1 pc 400 500 type 1 pc 1 pc 3 pcs 1 pc Shape Gas piping Liquid piping only 500MY16 Gas piping Location Partition plate Name Bolts for flanges Quantity 14 pcs 125 200 type 30 pcs 250 type 18 pcs 400 type 36 pcs 500 type Shape M8 20 Location Partition plate However 2 bolts and 2 nuts are used for flange...

Page 4: ... control panel part Make sure to sling over the hanger 4 INSTALLATION SITE Note Do not apply force on the resin parts in case of carrying the indoor unit when and after unpacking 1 Select an installation site where the following conditions are satisfied and obtain the customer s approval before installation The foundation is strong enough to support the weight of the unit and the floor is flat to ...

Page 5: ... 3 mm displacement per 1 m 5 3 TENSION OF V BELT Tension of a V belt must meet the deflection load W as shown Calculate the required deflection length L by the equation 1 its tolerance must be within the range as below C L 1 Deflection load L 0 016 C mm C Distance between the shafts of the pulley mm W Types of V belt Deflection load W N A type 13 7 20 6 B type 22 6 34 3 Note It is recommended to ch...

Page 6: ...ION PIPING See the following table for the Processing connection piping For right side piping replace the partition bush fixed on the right side panel with the bush for hole fixed on the left side panel Left side piping connection Right side piping connection Piping on liquid side 125 250 type Pass the piping from the hole on the left side into the unit conduct sleeve flare process and brazed conn...

Page 7: ...t Drain plug Indoor unit Downward inclination 1 100 or more 50 mm or more Drain plug cap accessories 100 mm or more Drain piping for Left side connection CAUTION The connection of the drain piping Do not directly connect the drain piping to sewerage which odor may smell like ammonia Sewerage may contain it which may pass through the drain piping and result in corrosion of the indoor unit heat exch...

Page 8: ... type Wiring from right side Earth terminal Control box Pass the attached clamp through the resin clamp and bundle each wiring in one and fix them Terminal block for the wiring between indoor unit and outdoor unit Terminal block for power supply wiring Earth terminal for shield wire Wiring from left side Earth terminal Control box Pass the attached clamp through the resin clamp and bundle each wiri...

Page 9: ...al heat radiation Fig 2 Use wires the same in size if the air conditioner is in simultaneous multi operation Abnormal heating may occur if the wirings are not tightened securely Use the required wirings connect them securely and fix these wirings securely so that external force may not apply to the terminals Use a proper screw driver for tightening the terminal screws If an improper screw driver i...

Page 10: ... when setting by group 4 Press the upper button and select FIRST CODE NO 5 Press the lower button and select the SECOND CODE NO 6 Press the button once and the present settings are SET 7 Press the TEST button to return to the NORMAL MODE SETTING TEST UNIT NO 3 4 5 6 7 1 2 UNIT NO MODE NO SECOND CODE NO FIRST CODE NO FIELD SET MODE Note 1 Setting is carried out in the group mode however set the mod...

Page 11: ...OPERATION 1 Confirm that the control box lid of the indoor units and the outdoor unit are closed 2 Perform the test run according to the installation manual attached to the outdoor unit If the operation lamp on the control panel is flashing it indicates malfunction Check the error code of the liquid crystal display and the malfunction source For the error code and the details refer to the operatio...

Page 12: ...3P345056 4F EM13A004B 1511 HT ...

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