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English

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VRV SYSTEM Inverter Air Conditioners

Installation manual

CONTENTS

1. SAFETY PRECAUTIONS................................................ 1
2. BEFORE INSTALLATION................................................ 2
3. SELECTING INSTALLATION SITE ................................. 3
4. PREPARATIONS BEFORE INSTALLATION ................... 3
5. INDOOR UNIT INSTALLATION....................................... 4
6. OUTDOOR UNIT INSTALLATION................................... 5
7. REFRIGERANT PIPING WORK ..................................... 5
8. DRAIN PIPING WORK .................................................... 7
9. INSTALLING THE DUCT................................................. 8

10. ELECTRIC WIRING WORK ............................................ 8

11. WIRING EXAMPLE ......................................................... 9

12. FIELD SETTING AND TEST RUN .................................11
13. WIRING DIAGRAM ....................................................... 13

The original instructions are written in English. All other lan-
guages are translations of the original instructions.

1. SAFETY PRECAUTIONS

Please read these “SAFETY PRECAUTIONS” carefully before 
installing air conditioning equipment and be sure to install it cor-
rectly.
After completing installation, conduct a trial operation to check 
for faults and explain to the customer how to operate the air con-
ditioner and take care of it with the aid of the operation manual. 
Ask the customer to store the installation manual along with the 
operation manual for future reference.

This air conditioner comes under the term “appliances not 
accessible to the general public”.

Meaning of WARNING and CAUTION notices

WARNING

............. Failure to follow these instructions 

properly may result in personal injury 

or loss of life. 

CAUTION

.............. Failure to observe these instructions 

properly may result in property dam-
age or personal injury, which may be 
serious depending on the circum-
stances.

WARNING

Ask your dealer or qualified personnel to carry out installation 
work. 
Do not attempt to install the air conditioner yourself. Improper 
installation may result in water leakage, electric shocks or 
fire.

Install the air conditioner in accordance with the instructions 
in this installation manual.
Improper installation may result in water leakage, electric 
shocks or fire.

Consult your local dealer regarding what to do in case of 
refrigerant leakage. When the air conditioner is to be 
installed in a small room, it is necessary to take proper mea-
sures 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 deple-
tion. 

Be sure to use only the specified accessories and spare 
parts for installation work. 
Failure to use the specified parts may result in the unit falling, 
water leakage, electric shocks or fire. 

Install the air conditioner on a foundation strong enough to 
withstand the weight of the unit. 

A foundation of insufficient strength may result in the equip-
ment falling and causing injury.

Carry out the specified installation work after taking into 
account strong winds, typhoons or earthquakes.
Failure to do so during installation work may result in the unit 
falling and causing accidents.

Make sure that a separate power supply circuit is provided 
for this unit and that all electrical work is carried out by qual-
ified personnel according to local laws and regulations and 
this installation manual. 
An insufficient power supply capacity or improper electrical 
construction may lead to electric shocks or fire.

Make sure that all wiring is secured, the specified wires are used, 
and that there is no strain on the terminal connections or wires.
Improper connections or securing of wires may result in 
abnormal heat build-up or fire.

When wiring the power supply and connecting the remote 
controller wiring and transmission wiring, position the wires 
so that the control box lid can be securely fastened.
Improper positioning of the control box lid may result in elec-
tric shocks, fire or the terminals overheating. 

If refrigerant gas leaks during installation, ventilate the area 
immediately. 
Toxic gas may be produced if the refrigerant comes into con-
tact with fire.

After completing installation, check for refrigerant gas leak-
age.
Toxic gas may be produced if the refrigerant gas leaks into 
the room and comes into contact with a source of fire, such 
as a fan heater, stove or cooker.

Be sure to switch off the unit before touching any electrical 
parts. 

Do not touch the switch with wet fingers.
Touching the switch with wet fingers can cause electric shock.

Be sure to earth the air conditioner. 
Do not earth the unit to a utility pipe, lightning conductor or 
telephone earth lead.
Imperfect earthing may result in electric shocks or fire. 
A high surge current from lightning or other sources may 
cause damage to the air conditioner.

Be sure to install an earth leakage breaker.
Failure to install an earth leakage breaker may result in elec-
tric shocks or fire.

CAUTION

While following the instructions in this installation manual, 
install drain piping to ensure proper drainage and insulate 
piping to prevent condensation. 
Improper drain piping may result in indoor water leakage and 
property damage.

Install the indoor and outdoor units, power cord and connect-
ing wires at least 1 meter away from televisions or radios to 
prevent picture interference and noise.
(Depending on the incoming signal strength, a distance of 
1 meter may not be sufficient to eliminate noise.)

Remote controller (wireless kit) transmitting distance can be 
shorter than expected in rooms with electronic fluorescent 
lamps (inverter or rapid start types).
Install the indoor unit as far away from fluorescent lamps as 
possible.

Sound pressure level is less than 70 dB (A).

Only handle the indoor unit with gloves. 

Summary of Contents for VRV SYSTEM FXNQ20A2VEB

Page 1: ...INSTALLATION MANUAL FXNQ20A2VEB FXNQ25A2VEB FXNQ32A2VEB FXNQ40A2VEB FXNQ50A2VEB FXNQ63A2VEB System Inverter Air Conditioners...

Page 2: ...A y es valorado positivamente por B de acuerdo con el Certificado C 06 Nota delineato nel A e giudicato positivamente da B secondo il Certificato C 07 A B C 08 Nota tal como estabelecido em A e com o...

Page 3: ...after taking into account strong winds typhoons or earthquakes Failure to do so during installation work may result in the unit falling and causing accidents Make sure that a separate power supply ci...

Page 4: ...by the hanger brackets Do not apply force to the refrigerant piping drain piping or flange parts Be sure to check the type of R410A refrigerant to be used before installing the unit Using an incorrect...

Page 5: ...with ducting and grill which can only be removed with the aid of tooling It shall be installed so that it gives adequate protection against touching the fan If a maintenance panel exists in the ducti...

Page 6: ...ust the unit to fit between the walls 3 Check the unit is horizontally level CAUTION Make sure the unit is installed level using a level or a plastic tube filled with water In using a plastic tube ins...

Page 7: ...to the outdoor unit Execute heat insulation work completely on both sides of the gas piping and the liquid piping Otherwise a water leakage can result sometimes Use insulation that can withstand tempe...

Page 8: ...id sealing pad 6 over the insulation for fitting 4 flare nut part CAUTION Be sure to insulate any field piping all the way to the piping connection inside the unit Any exposed piping may cause condens...

Page 9: ...ia in the sewage might enter the indoor unit through the drain piping and corrode the heat exchanger Do not twist or bend the drain hose 2 so that excessive force is not applied to it This type of tre...

Page 10: ...rth wires Gas pipes gas leaks can cause explosions and fire Water pipes they cannot be grounded if hard vinyl pipes are used Telephone earth wire and lightning rods the ground potential when struck by...

Page 11: ...ck Doing so can destroy the entire system Connecting electrical wiring remote controller wiring and transmission wiring Refer to the following picture Power supply and Earth wiring Remove the control...

Page 12: ...ntroller and working from the 2 positions pry off the upper part 2 loca tions Terminal block Tightening torque N m Remote controller transmission wiring terminal block 6P 0 79 0 97 Power supply wiring...

Page 13: ...E NO and SECOND CODE NO The Field Settings included with the remote controller lists the order of the settings and method of operation Lastly make sure the customer keeps the Field Settings manual alo...

Page 14: ...rouble An explanation of malfunction codes and the correspond ing trouble is provided in CAUTION FOR SERVICING of the outdoor unit If the display shows any of the following there is a possi bility tha...

Page 15: ...L PARTS X24A CONNECTOR WIRELESS REMOTE CONTROLLER X33A CONNECTOR ADAPTOR FOR WIRING X35A CONNECTOR POWER SUPPLY CONNECTOR X38A CONNECTOR MULTI TENANT WIRED REMOTE CONTROLLER R1T THERMISTOR AIR SS1 SEL...

Page 16: ...4P393318 1B 2015 03 Copyright 2014 Daikin...

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