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LCBKQ3AV1(E)

Booster Unit

Installation manual

CONTENTS

1. FIRST OF ALL ......................................................................... 1

1-1 Safety  Precautions ........................................................... 1
1-2 Special Notice of Product.................................................. 2
1-3 Disposal Requirements ..................................................... 2

2. BEFORE INSTALLATION........................................................ 2

2-1 Standard Supplied Accessories ........................................ 2
2-2 Example of System Configuration..................................... 2
2-3 Indoor Unit Constraints ..................................................... 3

3. SELECTION OF LOCATION ................................................... 3
4. PLACING THE UNIT................................................................ 3

4-1 Handling The Unit ............................................................. 3
4-2 Installation the Unit ........................................................... 4
4-3 Draining the Unit ............................................................... 4
4-4 Installation Procedure ....................................................... 4

5. REFRIGERANT PIPING .......................................................... 4

5-1 Selection of Piping Material .............................................. 5
5-2 Protection against Contamination when 

Installing Pipes .................................................................. 6

5-3 Pipe Connection................................................................ 6
5-4 Connecting the Refrigerant Piping .................................... 6
5-5 Air Tight Test / Vacuum Drying ......................................... 7
5-6 Thermal Insulation for Piping ............................................ 7

6. FIELD WIRING ........................................................................ 8

6-1 Example of Wiring Entire System ..................................... 9
6-2 Procedure for Incoming Wiring ......................................... 9
6-3 Wiring Connection........................................................... 10
6-4 Checking of Device and Installation Conditions .............. 10

7. CHECKS AFTER WORK COMPLETION .............................. 10
8. REFRIGERANT REPLENISHMENT...................................... 11
9. TEST RUN ............................................................................. 11

1.

FIRST OF ALL

• This document is an installation manual for the Daikin Booster 

Unit. Before installing the unit, read this manual thoroughly, and 
following the instructions contained in it. After installation, do a 
test run to make sure the unit runs properly, and then explain how 
to operate and take care of the unit to the customer, using the 
operation manual.

• Lastly, make sure the customer keeps this manual, along with the 

operation manual, in a safe place.

• This manual does not describe how to install the indoor unit and out-

door unit. 
Refer to the installation manual included with the indoor unit and 
outdoor unit for that.

1-1 Safety  Precautions

Please read these “Safety  precautions” carefully before installing the 
booster unit and be sure to install it correctly. 
After completing installation, conduct a trial operation to check for 
faults and explain to the customer how to operate the booster unit 
and take care of it with the aid of the operation manual. Ask the cus-
tomer to store the installation manual along with the operation man-
ual for future reference.

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 damage or personal 
injury, which may be serious depending on the 
circumstances.

WARNING

• Ask your dealer or qualified personnel to carry out installation 

work.
Do not attempt to install the booster unit yourself. Improper 
installation may result in water leakage, electric shocks or fire.

• Maintenance personnel of the manufacturer or equivalent skilled 

personnel should install this unit.

• Install the booster unit in accordance with the instructions in this 

installation manual.
Improper installation may result in water leakage, electric shocks 
or fire.

• When installing the unit in a small room, take measures against to 

keep refrigerant concentration from exceeding allowable safety 
limits in the event of refrigerant leakage. 
Contact the place of purchase for more information. Excessive 
refrigerant in a closed ambient can lead to oxygen deficiency.

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

lation work.
Failure to use the specified parts may result in the unit falling, 
water leakage, electric shocks or fire.

• Install the booster unit on a foundation strong enough to withstand 

the weight of the unit.
A foundation of insufficient strength may result in the equipment 
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 fall-
ing 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 qualified person-
nel according to local laws and regulations and this installation 
manual.
An insufficient power supply capacity or improper electrical con-
struction 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 transmission wir-

ing, position the wires so that the control box lid can be securely 
fastened. 
Improper positioning of the control box lid may result in electric 
shocks, fire or the terminals overheating.

• If refrigerant gas leaks during installation, ventilate the area 

immediately.
Toxic gas may be produced if the refrigerant gas comes into con-
tact with fire.

• After completing installation, check for refrigerant gas leakage.

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 directly touch refrigerant that has leaked from refrigerant 

pipes or other areas, as there is a danger of frostbite. 

• Do not allow children to climb on the outside unit and avoid plac-

ing objects on the unit. 
Injury may result if the unit becomes loose and falls.

• Be sure to earth the booster unit.

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 booster unit.

• Be sure to install an earth leakage breaker.

Failure to install an earth leakage breaker may result in electric 
shocks or fire.

CAUTION

• While following the instructions in this installation manual, install 

drain piping to ensure proper drainage and insulate piping to pre-
vent condensation.
Improper drain piping may result in indoor water leakage and 
property damage.

Summary of Contents for LCBKQ3AV1

Page 1: ...ands Installation manual Booster Unit Installationsanleitung Zusatzgerät Manuel d installation Unité d accélération Manual de instalación Unidad booster Manuale di installazione Compressore ausiliario Installatiehandleiding Boostereenheid Manual de instalação Booster Booster Unit LCBKQ3AV1 E ...

Page 2: ......

Page 3: ...nstalling the unit in a small room take measures against to keep refrigerant concentration from exceeding allowable safety limits in the event of refrigerant leakage Contact the place of purchase for more information Excessive refrigerant in a closed ambient can lead to oxygen deficiency Be sure to use only the specified accessories and parts for instal lation work Failure to use the specified par...

Page 4: ...be charged with fluorinated greenhouse gases covered by the Kyoto Protocol Do not vent gases into the atmosphere Refrigerant type R410A GWP 1 value 1975 1 GWP global warming potential Values are indicated in F gas regulations EC No 842 2006 Annex I Parts 1 and 2 The refrigerant R410A requires strict cautions for keeping the sys tem clean dry and tight Read the chapter REFRIGERANT PIPING carefully ...

Page 5: ...o consideration human traffic and wind As regards space in front of the unit consider the space needed for the local refrigerant piping when installing the units If the work conditions in the following figure do not apply contact your dealer or Daikin directly CAUTION 1 An inverter booster unit may cause electronic noise generated from AM broadcasting Examine where to install the main booster unit...

Page 6: ... fluoride is contained the flux will have adverse influences on the refrigerant piping line such as the dete rioration of refrigerating machine oil CAUTION All field piping must be installed by a licensed refrigeration tech nician and must comply with relevant local and national regula tions Precautions for reuse of existing refrigerant piping heat exchangers Keep the following points in mind for ...

Page 7: ...r unit Example of piping connection Piping size O D min thickness mm Note 1 Liquid piping inlet Main liquid piping between booster unit and outdoor unit Liquid piping outlet Between booster unit and refrigeration showcase Suction piping Between booster unit and refrigeration showcase Discharge piping Main gas piping between booster unit and outdoor unit Note 2 If the size of the connection pipe of...

Page 8: ...lve opened without turning the power on otherwise refrigerant may be condensed in the compressor and the insulation of the main power supply circuit may be degraded Be sure to use an exclusive tool to handle the shutoff valve The shutoff valve is not of back sheet type Excessive force imposed may break the valve Use a charge hose when using the service port Make sure that there is no refrigerant g...

Page 9: ...gn pres sure 3 8MPa of the outdoor unit and pressurize the low pressure side suction side to the design pressure 2 5MPa of the indoor unit field supplied In this case they shall be accepted if no pressure drop is found for 24 hours through pressurization at least 5 minutes from the port A and the liquid shutoff port shown in the right figure Check if there are any leakage areas in the case of pres...

Page 10: ... rise in electrical potential in the grounding Be sure to install an earth leakage circuit breaker This unit uses an inverter so install the earth leakage circuit breaker that be capable of handling high harmonics in order to prevent malfunctioning of the earth leakage circuit breaker itself Earth leakage circuit breaker which are especially for protecting ground faults should be used in conjuncti...

Page 11: ...oles on the right side Timer for refrigeration Timer for freezer Note 3 In case of the malfunction Constant a contact output Relay Alarm panel Warning output Caution output Branch switch Overcurrent circuit breaker Refrigeration operating output Freezer operation output Indoor unit Booster unit Remote switch Note 1 Remote controller In Out Out Out Thermostat for inner temperature adjustment Defros...

Page 12: ...ion for transmission wire and refrigeration operation input wiring Connection for remote switch wire Set the operation switch to Remote as shown in the figure below to remotely start up and shut down Use a remote switch that has a contact assuring the minimum applicable load of DC12V 1mA 6 4 Checking of Device and Installation Conditions Be sure to check the followings For those doing electrical w...

Page 13: ...switch BS5 using an insulating rod See the right figure Refer to the Service Manual for other malfunction codes Take the following action if you find a malfunction code on the remote controller during the test run 1 Set the operating switch to the OFF position to reset the power sup ply and then return the switch to the ON position to restart the unit If the problem persists refer to the Service M...

Page 14: ...3P248411 5B EM09A056 1002 FS ...

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