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14 About the system

Installer and user reference guide

40

LRMEQ+4BY1

Air-cooled refrigeration condensing unit

4P500362-1A – 2018.09

For the user

14

About the system

NOTICE

For future modifications or expansions of your system:

A  full  overview  of  allowable  combinations  (for  future
system  extensions)  is  available  in  technical  engineering
data  and  should  be  consulted.  Contact  your  installer  to
receive more information and professional advice.

14.1

System layout

c

b

d

a

a

Outdoor unit (ZEAS condensing unit)

b

Refrigerant piping

c

Indoor unit (Blower coil)

d

Indoor unit (Showcase)

15

Before operation

WARNING

This unit contains electrical and hot parts.

WARNING

Before operating the unit, be sure the installation has been
carried out correctly by an installer.

NOTICE

Never  inspect  or  service  the  unit  by  yourself.  Ask  a
qualified service person to perform this work.

CAUTION

It is not good for your health to expose your body to the air
flow for a long time.

CAUTION

To  avoid  oxygen  deficiency,  ventilate  the  room  sufficiently
if equipment with burner is used together with the system.

CAUTION

Do  NOT  operate  the  system  when  using  a  room
fumigation-type  insecticide.  Chemicals  could  collect  in  the
unit,  and  endanger  the  health  of  people  who  are
hypersensitive to chemicals.

NOTICE

Be  sure  to  turn  on  the  power  6  hours  before  operation  in
order  to  have  power  running  to  the  crankcase  heater  and
to 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 temperature

–20~5°C

–45~–20°C

16.2

Operating the system

16.2.1

About operating the system

▪ To  start  and  stop  operation  of  the  outdoor  unit,  use  the  external

operation switch.

▪ If the main power supply is turned off during operation, operation

will restart automatically after the power turns back on again.

17

Energy saving and optimum
operation

▪ Turn off the main power supply switch to the unit when the unit is

NOT  used  for  longer  periods  of  time.  If  the  main  power  supply
switch  is  on,  the  unit  consumes  electricity.  Before  restarting  the
unit,  turn  on  the  main  power  supply  switch  6  hours  before
operation to ensure smooth running.

18

Maintenance and service

NOTICE

Never  inspect  or  service  the  unit  by  yourself.  Ask  a
qualified service person to perform this work.

WARNING

Never replace a fuse with a fuse of a wrong ampere ratings
or  other  wires  when  a  fuse  blows  out.  Use  of  wire  or
copper wire may cause the unit to break down or cause a
fire.

CAUTION

Do  NOT  insert  fingers,  rods  or  other  objects  into  the  air
inlet  or  outlet.  Do  NOT  remove  the  fan  guard.  When  the
fan is rotating at high speed, it will cause injury.

CAUTION: Pay attention to the fan!

It is dangerous to inspect the unit while the fan is running.

Be  sure  to  turn  off  the  main  switch  before  executing  any
maintenance task.

CAUTION

After  a  long  use,  check  the  unit  stand  and  fitting  for
damage. If damaged, the unit may fall and result in injury.

Содержание LRMEQ4BY1

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 44: ...4P500362 1A 2018 09 Copyright 2016 Daikin...

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