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Installation manual

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20B7Y1R

Air cooled refrigeration condensing unit

4P360438-1B – 2014.01

CONTENT

 1. INTRODUCTION ....................................................................... 1

 1-1 Safety precautions ............................................................. 1
 1-2 Special notice of product.................................................... 2
 1-3 Disposal requirements ....................................................... 2

 2. BEFORE INSTALLATION.......................................................... 3

 2-1 Standard supplied accessories .......................................... 3
 2-2 Mandatory connection kit ................................................... 3
 2-3 Model series....................................................................... 3
 2-4 Example of system configuration ....................................... 3
 2-5 Indoor unit constraints........................................................ 3

 3. SELECTION OF LOCATION ..................................................... 3
 4. HANDLING THE UNIT .............................................................. 6
 5. PLACING THE UNIT ................................................................. 6
 6. REFRIGERANT PIPING............................................................ 6

 6-1 Selection of piping material................................................ 7
 6-2 Protection against contamination when installing pipes..... 8
 6-3 Pipe connection ................................................................. 8
 6-4 Connecting the refrigerant piping....................................... 8

 7. FIELD WIRING ........................................................................ 13

 7-1 Example of wiring entire system ...................................... 13
 7-2 Procedure for incoming wiring ......................................... 14
 7-3 Procedure for power supply wiring................................... 14
 7-4 Procedure for wiring inside units...................................... 16

 8. INSPECTION AND PIPE INSULATION .................................. 16

 8-1 Airtight test/refrigerant oil charging/vacuum drying.......... 16
 8-2 Thermal insulation work ................................................... 18
 8-3 Checking of device and installation conditions ................ 18

 9. CHECKS AFTER WORK COMPLETION................................ 18
 10. REFRIGERANT REPLENISHMENT ....................................... 19
 11. FIELD SETTINGS ................................................................... 20
 12. TEST RUN............................................................................... 21

The English text is the original instruction. Other languages are 
translations of the original instructions.

1. INTRODUCTION

• This document is an installation manual for the Daikin Air Cooled 

Refrigeration Condensing 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. 

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

1-1 Safety precautions

Please read these “Safety precautions” carefully before installing 
condensing unit and be sure to install it correctly. 
Meaning of WARNING and CAUTION notices
Both are important notices for safety. Be sure to follow them.

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 circum-
stances.

After completing installation, conduct a test operation to confirm that 
the equipment operates without any problems. Then, explain to the 
customer how to operate the equipment and take care of it following 
the operation manual. 

Ask the customer to store the installation manual along with the 
operation manual for future reference.

WARNING

• Ask your dealer or qualified personnel to carry out installation work. 

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

• Install the condensing 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 so that the 

refrigerant may not exceed the limiting concentration in the event 
of refrigerant leakage.
Contact your dealer for further information. If the refrigerant leaks and 
exceeds the limiting concentration, it may lead to oxygen deficiency.

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

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

• Install the condensing unit on a foundation strong enough to 

withstand the weight of the unit. 
If a foundation does not have sufficient strength, the equipment 
may fall and cause injury.

• Carry out the required installation work in consideration of strong 

winds, typhoons or earthquakes.
If the installation work is not properly carried out, the unit may fall 
down and cause accidents.

• The electrical work must be carried out by the qualified electrician in 

accordance with the local laws and regulations and this installation 
manual. Make sure to provide a dedicated power supply circuit and 
never connect additional wiring to the existing circuit.
An insufficient power supply capacity or improper electrical work 
may lead to electric shocks or fire.

• Be sure to earth the condensing 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 condensing unit.

• Be sure to install an earth leakage breaker.

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

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

Touching a live part may result in electric shock.

• For wiring, use the specified wires and connect and fasten them 

firmly so that no external force from the wires may be applied to the 
terminal connections.
If the wires are not firmly connected and fastened, it may cause 
heating, fire or the like.

• When wiring the power supply and connecting 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 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 comes into contact 
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.

• 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 placing 

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

LREQ15B7Y1R
LREQ20B7Y1R

Air cooled refrigeration condensing unit

Installation manual

Summary of Contents for LREQ15B7Y1R

Page 1: ...INSTALLATION MANUAL LREQ15B7Y1R LREQ20B7Y1R Air cooled refrigeration condensing unit...

Page 2: ...jennom positiv bed mmelse av B if lge Sertifikat C som det fremkommer i den Tekniske Konstruksjonsfilen D og gjennom positiv bed mmelse av E Anvendt modul F G Risikokategori H Se ogs neste side 13 jot...

Page 3: ...PS vastav k llastunud temperatuur M C Jahutusaine N Surve turvaseadme seadistus P bar Tootmisnumber ja tootmisaasta vaadake mudeli andmeplaati 21 PS K bar TS TSmin L C TSmax PS M C N P bar 22 Maksima...

Page 4: ...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 so that t...

Page 5: ...containing less than 95 kg refrigerant charge CAUTION This unit is already filled with a certain amount of R410A Never open liquid and gas shutoff valve until the step specified in 9 CHECKS AFTER WOR...

Page 6: ...ber of indoor units be sure to install them at the same level Use either off cycle defrosting or electric heater defrosting as the defrosting type Hot gas defrosting models cannot be used Make sure th...

Page 7: ...for front side no higher than 1500 mm Wall height on the suction side no higher than 500 mm Wall height for sides no limit Make sure each unit is installed level Install the slave unit adjacent to the...

Page 8: ...See Engineering Data for details 5 If the outdoor units are installed in areas with heavy snowfall the installation of a snowbreak hood is required This is available as an optional accessory If the un...

Page 9: ...hen installing on a roof make sure the roof floor is strong enough and be sure to water proof all work Make sure the area around the machine drains properly by setting up drainage grooves around the f...

Page 10: ...used is clean and free of contaminants such as sulphur oxide dust chips oil and fat and water It is desirable that the maximum oil adhesion in the piping is 30 mg per 10 m Use the following type of re...

Page 11: ...f indoor units connected downstream Total capacity of indoor units after branching Liquid pipe size less than 4 0 kW 6 4 x 0 8 O type 4 0 kW over and less than 14 0 kW 9 5 x 0 8 O type 14 0 kW over an...

Page 12: ...plete Wait until all oil is dripped out 7 Cut the pinched piping off with a pipe cutter just above the brazing point or just above the marking in case there is no brazing point 8 Wait until all oil is...

Page 13: ...t to the valve cover mount and the screw thread of the service port Otherwise dew condensation water will intrude inside and freeze Therefore refrigerant gas leakage or a compressor malfunction may re...

Page 14: ...nnected at the lateral side bottom CAUTION Only use the dedictated outdoor unit multi connection piping kit EKHRQZM When brazing make sure there are no flammable materials around 1 Connect gas side ac...

Page 15: ...oisture Follow instructions in the dryer instruction manual concerning dryer brazing Repair any burning of dryer paint that occurs during dryer brazing Contact the manufacturer for more information ab...

Page 16: ...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...

Page 17: ...field supply 7 3 Procedure for power supply wiring Procedure for Power Supply Wiring 1 Power supply 3 phase 50 Hz 380 415 2 Overcurrent circuit breaker earth leakage circuit breaker all pole disconne...

Page 18: ...stem on page 13 by all means when connecting the operation output wiring A compressor failure may result if the operating output wiring is not connected Remote switch wiring connections When installin...

Page 19: ...ut operation output wiring from the front 10 When routing remote operating switch wiring from the front 11 Remote switch terminal block X3M 12 When routing remote switch wiring through a wiring openin...

Page 20: ...e the outdoor unit for one hour and then check that the reading on the vacuum gauge is not rising If the reading on the vacuum gauge is rising water may be remaining in the system or leakage may be oc...

Page 21: ...page 19 see the illustrations below Use the piping outlet for jobs required during the steps of 10 REFRIGERANT REPLENISHMENT on page 19 e g a job of taking in the charge hose Note After knocking out t...

Page 22: ...n operation d Turn off the operation switch of the outdoor unit after the speci fied amount of refrigerant is replenished To prevent liquid compression e Caution Fully open the shutoff valves on the g...

Page 23: ...in ballpoint or another non conducting object Close the inspection door after the work is finished A Inspection hole upper left B Inspection hole upper right 1 Inspection door left 2 Lift to open 3 Op...

Page 24: ...malfunction code items can be displayed on the condensing unit 1 Make sure that the LED H1P is off If the LED is on press the MODE button BS1 once 2 Press the MODE button BS1 once The LED H1P starts b...

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Page 28: ...4P360438 1B 2014 01 Copyright 2013 Daikin 4P360438 1 B 0000000_...

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