Daikin LRMEQ4BY1 Installer And User Manual Download

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Installer and user reference guide

Air-cooled refrigeration condensing unit

English

Installer and user

reference guide

Air-cooled refrigeration condensing unit

LRMEQ3BY1
LRMEQ4BY1

LRLEQ3BY1
LRLEQ4BY1

Summary of Contents for LRMEQ4BY1

Page 1: ...Installer and user reference guide Air cooled refrigeration condensing unit English Installer and user reference guide Air cooled refrigeration condensing unit LRMEQ3BY1 LRMEQ4BY1 LRLEQ3BY1 LRLEQ4BY1...

Page 2: ...ervice port 16 6 4 6 To remove the pinched pipes 17 6 4 7 Guidelines when installing a sight glass 18 6 4 8 Guidelines when installing a dryer 18 6 4 9 To connect the refrigerant piping to the outdoor...

Page 3: ...XPLOSION Indicates a situation that could result in explosion WARNING Indicates a situation that could result in death or serious injury WARNING FLAMMABLE MATERIAL CAUTION Indicates a situation that c...

Page 4: ...unit Do NOT sit climb or stand on the unit NOTICE Works executed on the outdoor unit are best done under dry weather conditions to avoid water ingress In accordance with the applicable legislation it...

Page 5: ...ide down Open refrigerant cylinders slowly Charge the refrigerant in liquid form Adding it in gas form may prevent normal operation CAUTION When the refrigerant charging procedure is done or when paus...

Page 6: ...utside pressure being exerted on the terminal board Use an appropriate screwdriver for tightening the terminal screws A screwdriver with a small head will damage the head and make proper tightening im...

Page 7: ...s of the unit Carry the unit slowly as shown Forklift As long as the unit remains on its pallet you can also use a forklift 3 2 3 To remove the accessories from the outdoor unit 1 Remove the service c...

Page 8: ...ed at the following conditions ambient temperature 32 C evaporating temperature 35 C superheat 10 K 4 4 System layout c b d a a Outdoor unit ZEAS condensing unit b Refrigerant piping c Indoor unit Blo...

Page 9: ...410A and the same oil FVC68D as the new one you must clean the heat exchanger tubes to remove any residue If the old condensing unit did NOT use the same refrigerant R410A as the new one make sure the...

Page 10: ...t Where the voltage fluctuates a lot In vehicles or vessels Where acidic or alkaline vapour is present Seaside installation Make sure the outdoor unit is NOT directly exposed to sea winds This is to p...

Page 11: ...Amount of refrigerant in a single unit system amount of refrigerant with which the system is charged before leaving the factory B Additional charging amount amount of refrigerant added locally C Total...

Page 12: ...8 Annealed O 0 99 mm 19 1 mm 3 4 Half hard 1 2H 0 80 mm a Depending on the applicable legislation and the unit s maximum working pressure see PS High on the unit name plate larger piping thickness mig...

Page 13: ...ndoor Example H Limit 20 m Outdoor lower than indoor 10 m Maximum height difference indoor indoor 5 m 5 3 7 To select the expansion valve This unit has a larger subcooling ratio for the liquid refrige...

Page 14: ...bes what you have to do and know on site to install the system Typical workflow Installation typically consists of the following stages Mounting the outdoor unit Mounting the indoor units Connecting t...

Page 15: ...can tilt the unit take following measure 1 Prepare 2 cables as indicated in the following illustration field supply 2 Place the 2 cables over the outdoor unit 3 Insert a rubber sheet between the cabl...

Page 16: ...y affects valves and compressors in the refrigerating system and prevents proper operation Set the nitrogen pressure to 20 kPa 0 2 bar just enough so it can be felt on the skin with a pressure reducin...

Page 17: ...le the service port Always use a charge hose equipped with a valve depressor pin since the service port is a Schrader type valve After handling the service port make sure to tighten the service port c...

Page 18: ...lass before the dryer as near to the outdoor unit as possible Install horizontally a b a Sight glass b Dryer When brazing Follow the brazing instructions in the sight glass manual 6 4 8 Guidelines whe...

Page 19: ...the required length e1 This is necessary because the size of the gas stop valve is 15 9 while the piping between outdoor unit and first refrigerant branch kit is 19 1 Possibility 1 To the front e1 e c...

Page 20: ...il all moisture has been removed All piping inside the unit has been factory tested for leaks Only field installed refrigerant piping needs to be checked Therefore make sure that all the outdoor unit...

Page 21: ...ice port of the liquid stop valve or first pre charge a portion of refrigerant through the liquid line either open the outdoor unit stop valves or keep them closed See 6 7 4 To charge refrigerant on p...

Page 22: ...ils are used 0 6 kg Metric piping When using metric piping replace the weight factors in the formula by the ones from the following table Inch piping Metric piping Piping Weight factor Piping Weight f...

Page 23: ...t evaporating temperature with settings 2 0 and 2 1 see 7 2 8 Mode 2 Field settings on page 30 18 Turn on the power of the indoor units 19 Turn on the operation switch Result The unit will start opera...

Page 24: ...al refrigerant charge in kg 1000 2 Fix the label on the inside of the outdoor unit near the gas and liquid stop valves 6 8 Connecting the electrical wiring 6 8 1 About connecting the electrical wiring...

Page 25: ...ther means for disconnection having a contact separation in all poles providing full disconnection under overvoltage category III condition MUST be installed in the fixed wiring WARNING ONLY use coppe...

Page 26: ...size Tightening torque N m X1M power supply wiring power supply shielded ground M5 2 2 2 7 X2M remote operation switch low noise switch and transmission output M3 5 0 8 0 97 X3M output signals M4 2 3...

Page 27: ...d before the earth wire is in case the power supply is pulled loose from the stress relief NOTICE Never connect the power supply to terminal blocks X2M or X3M Otherwise the entire system may break dow...

Page 28: ...the hydro module To configure the condensing unit you must give input to the outdoor unit s main PCB A1P This involves the following field setting components Push buttons to give input to the PCB A di...

Page 29: ...tion when shipped from factory 10 12 min b c a a Power ON b Default situation c LED indication when there is a malfunction If the default situation is not displayed after 10 12 minutes check the malfu...

Page 30: ...ure With this setting the target evaporating temperature can be set in increments of 5 K default 10 C 35 C 20 C 45 C 15 C 40 C 5 C 30 C 0 C 25 C 5 C 20 C 2 1 Te fine tuning of evaporating temperature...

Page 31: ...the indoor units When performing the test operation NOT only the outdoor unit but the connected indoor unit will operate as well Working on an indoor unit while performing a test operation is dangero...

Page 32: ...describes the test operation of the complete system 8 4 2 To perform a test run 7 LEDs display 1 Make sure all field settings you want are set see 7 2 Making field settings on page 28 2 Turn ON the p...

Page 33: ...a tester and confirm that the voltage of the capacitor in the main circuit is less than 50 V DC C C A1P A2P 3 To prevent damaging the PCB touch a non coated metal part to eliminate static electricity...

Page 34: ...rigerant recovery machine High pressure sensor 3 55 MPa 35 5 bar 3 Warning Inverter compressor motor lock Position signal error 4 Warning The stop valves are closed Incorrect wiring Open the gas and l...

Page 35: ...failure Open circuit or shortcircuit 0 Caution Faulty connection of sensor Defective sensor Connect the sensor properly Replace defective component Low pressure sensor failure Open circuit or shortcir...

Page 36: ...1000 500 D 500 D E 1000 1000 500 B D 100 500 B D E HB HD HB HU 250 750 1000 500 HU HB HU 250 1000 1000 500 HB HU HB HD HD HU 100 1000 1000 500 HU HD HU 200 1000 1000 500 HD HU 200 1700 1000 500 HU a b...

Page 37: ...2 A1 A2 A1 If there is danger of drainage dripping and freezing between the upper and lower units A2 Then install a roof between the upper and lower units Install the upper unit high enough above the...

Page 38: ...Service port e Check valve f Maintenance stop valve g Liquid receiver h Heat exchanger i Oil separator j Distributor k Double tube heat exchanger l Propeller fan m Sight glass n Capillary tube M1C Co...

Page 39: ...se the contact Legend for wiring diagram LRMEQ3 4 A1P Printed circuit board main A2P Printed circuit board inverter BS A1P Push buttons MODE SET RETURN TEST RESET C A2P Capacitor DS1 A1P DIP switch E...

Page 40: ...protect the compressor 16 Operation 16 1 Operation range Use the system in the following temperature ranges for safe and effective operation LRMEQ LRLEQ Outdoor temperature 20 43 C DB Evaporating temp...

Page 41: ...information When asking your dealer for an intervention always state The complete model name of the unit The manufacturing number stated on the nameplate of the unit The installation date The symptoms...

Page 42: ...unit does not stop immediately when operation is stopped This is to prevent components from being damaged The unit will stop in a little while 19 1 3 Symptom Noise Outdoor unit A continuous low hissi...

Page 43: ...th the product and that need to be installed according to the instructions in the accompanying documentation Optional equipment Equipment made or approved by Daikin that can be combined with the produ...

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