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20B7Y1R

Air cooled refrigeration condensing unit

4P360438-1B – 2014.01

Installation manual

2

CAUTION

• Carry out drain piping properly following this installation manual 

and insulate the pipe to prevent condensation.
Improper drain piping may result in indoor water leakage and 
property damage.

• Install the indoor and outdoor units, power cord and connecting 

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.)

• Do not install the condensing unit in the following locations:

1. Where there is a high concentration of mineral oil spray or 

vapour (e.g. a kitchen). 
Plastic parts may deteriorate and cause parts to fall off or water 
to leak.

2. Where corrosive gas, such as sulphurous acid gas, is produced.

Corrosion of copper pipes or brazed parts may occur and cause 
refrigerant leakage. 

3. Where there is a machine that generates electromagnetic wave 

and where voltage fluctuation often occurs such as a factory.
Control system may malfunction and as a result the unit may 
not properly operate.

4. Where flammable gas may leak, where carbon fibre or ignitable 

dust is suspensions in the air, or where volatile flammables 
such as paint thinner or gasoline are handled.
Operating the unit in such conditions may result in fire.

5. Vehicles, ships, or other places that generate vibration or cause 

the condensing unit to move.
The condensing unit may malfunction or cause oxygen 
deficiency accidents as a result of refrigerant leakage.

6. Places with excessive voltage fluctuations.

The condensing unit may malfunction.

7. Places where fallen leaves accumulate or weeds grow thick.
8. Places that become small animals’ shelter.

Small animals coming in contact with electrical parts can cause 
malfunctions, smoke, or ignition.

• The condensing unit is not intended for use in a potentially 

explosive atmosphere.

1-2 Special notice of product

This condensing unit comes under the term “appliances not 
accessible to the general public”.
[CLASSIFICATION]

This condensing unit comes under the term “appliances not 
accessible to the general public”.
Refer to the connected indoor unit to know the climate class 
(EN60335-2-89).

[EMC CHARACTERISTICS]

This system is a class A product. In a domestic environment this 
product may cause radio interference in which case the user may be 
required to take adequate measures.

[REFRIGERANT]
This System use R410A refrigerant.

The total maximum refrigerant charge of a Multi-ZEAS system must 
be less than 100 kg, this to be in accordance with CE requirements 
(EN603350-2-40 standard). This means that in case the calculated 
total refrigerant charge is equal to or more than 95 kg you must divide 
your multiple outdoor system into smaller independent systems, each 
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 WORK COMPLETION" on page 18

.

• The refrigerant R410A requires that strict precautions be observed 

for keeping the system clean, dry and tightly sealed.
Read the chapter 

"6. REFRIGERANT PIPING" on page 6

 carefully 

and follow these procedures correctly.

A.Clean and dry

Strict measures must be taken to keep impurities (including 
SUNISO oil and other mineral oils as well as moisture) out of the 
system.

B.Tightly sealed

Take care to keep the system tight when installing.
R410A contains no chlorine, does not destroy the ozone layer 
and so does not reduce the earth’s protection against harmful 
ultraviolet radiation. R410A will contribute only slightly to the 
greenhouse effect if released into the atmosphere.

• Since R410A is a mixed refrigerant, the required additional 

refrigerant must be charged in its liquid state. If the refrigerant is 
charged in a state of gas, its composition changes and the system 
will not work properly.

• Be sure to perform refrigerant replenishment. 

Refer to

 

"9. CHECKS AFTER WORK COMPLETION" on page 18

 

and the label of instructions on refrigerant replenishment on the 
cover surface of the control box,

Important information regarding the refrigerant used

This product contains 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

Please fill in with indelible ink,

the factory refrigerant charge of the product,

the additional refrigerant amount charged in the field and

+

the total refrigerant charge 

on the refrigerant charge label supplied with the product.

The filled out label must be adhered in the proximity of the product 
charging port (e.g. onto the inside of the service cover).

[REFRIGERANT OIL]

This system uses DAPHNE FVC68D refrigerant oil. The label below is 
attached to the outdoor unit, under the refrigerant label. Fill in the 
blanks with indelible ink.

1

Target evaporating temperature

2

Total amount of required refrigerant oil

3

Amount of additional refrigerant oil

[DESIGN PRESSURE]

Since design pressure is 3.8 MPa or 38 bar (for R407C units : 
3.3 MPa or 33 bar), the wall thickness of pipes should be more 
carefully selected in accordance with the relevant local and national 
regulations.

1-3 Disposal requirements

Dismantling of the unit, treatment of the refrigerant, of oil and of other 
parts must be done in accordance with relevant local and national 
legislation.

3

5

6

2

1

4

1 factory refrigerant charge 

of the product : see unit 
name plate

2 additional refrigerant 

amount charged in the field

3 total refrigerant charge

4 Contains fluorinated 

greenhouse gases covered 
by the Kyoto Protocol

5 outdoor unit

6 refrigerant cylinder and 

manifold for charging

R E F .   O I L   V O L U M E

R E F.   O I L :   D A P H N E   F V C 6 8 D

TARGET EVAPORATING TEMP.=

TOTAL  REQUIRED.=

ADDITIONAL OIL.=

°c

L

L

1

2

3

Содержание LREQ-BY1R

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

Страница 2: ...ifikatet C i enlighet med den Tekniska Konstruktionsfilen D som positivt intygats av E Fastsatt modul F G Riskkategori H Se även nästa sida 12 som det fremkommer i A og gjennom positiv bedømmelse av B ifølge Sertifikat C som det fremkommer i den Tekniske Konstruksjonsfilen D og gjennom positiv bedømmelse av E Anvendt modul F G Risikokategori H Se også neste side 13 jotka on esitetty asiakirjassa A...

Страница 3: ... bar Минимално максимално допустима температура TS TSmin Минимална температура от страната на ниското налягане L C TSmax Температура на насищане съответстваща на максимално допустимото налягане PS M C Охладител N Настройка на предпазното устройство за налягане P bar Фабричен номер и година на производство вижте табелката на модела 22 Maksimalus leistinas slėgis PS K bar Minimali maksimali leistina...

Страница 4: ...n 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 concentratio...

Страница 5: ...h 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 WORK COMPLETION on page 18 The refrigerant R410A requires that strict precautions be observed for keeping the system clean dry and tightly sealed Read the chapter 6 REFRIGERANT PIPING on page 6 carefull...

Страница 6: ...mber 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 the total internal volume of indoor units connected to the condensing units is 80 l or lower Starting from an outdoor temperature of 32 C the total indoor unit capacity needs to be 50 or more of the to...

Страница 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 master unit Make sure the slave unit faces the same direction as the master unit Provide enough space for maintaining and servicing the units Provide adequate space for the air in and outlets Make s...

Страница 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 units are installed in a location where the ambient temperature can drop below 10 C install a windbreak board or a snowbreak hood 1 Snowbreak hood installation Required parts 2 Windbreak board installa...

Страница 9: ...When 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 foundation Drain water is sometimes discharged from the outdoor unit when it is running If the condensing unit is of brine damage resistant or heavy brine damage resistant type use nuts provided with ...

Страница 10: ...sed 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 refrigerant piping Material Seamless phosphorus deoxidized copper tube C1220T O for a maximum outer diameter of 15 9 mm and C1220T 1 2H for a minimum outer diameter of 19 1 mm Refrigerant piping size and...

Страница 11: ...or units connected downstream Total capacity of indoor units after branching Liquid pipe size less than 4 0 kW Ø6 4 x 0 8 O type 4 0 kW over and less than 14 0 kW Ø9 5 x 0 8 O type 14 0 kW over and less than 30 0 kW Ø12 7 x 0 8 O type 30 0 kW over and less than 50 0 kW Ø15 9 x 1 0 O type 50 0 kW or over Ø19 1 x 1 0 O type Total capacity of indoor units after branching Gas pipe size Medium temperat...

Страница 12: ...mplete 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 dripped out in case the recovery was not complete and only then proceed with connection of the field piping 1 Service port 2 Stop valve 3 Point of pipe cutting just above brazing point or above mark...

Страница 13: ... 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 result from the cap deformation or damage 3 Connecting refrigerant piping to outdoor units Use the outdoor unit multi connection piping kit EKHRQZM to split up the gas piping and connect it to the differ...

Страница 14: ...onnected 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 accessory pipes 1 to field supplied branch pipes Gas side accessory pipes 1 are supplied with the outdoor units 2 Connect gas side accessory pipes 1 to the gas side shutoff valves 1 Gas side accessory ...

Страница 15: ...moisture 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 about paint for repair use Flow direction is specified for some type of the dryer Set the flow direction according to the operation manual of the dryer Install the dryer on the main liquid pipe Sight g...

Страница 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 earth leakage circuit breaker itself Earth leakage circuit breaker which are especially for protecting ground faults should be used in conjunction with main switch or fuse for use with wiring Electr...

Страница 17: ...l 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 disconnection switch 3 Earth wire 4 Power supply terminal block 5 Mount insulation sleeves 6 Fix the power supply wiring for phases L1 L2 L3 and N respectively with the provided clamp 1 to the resin clamp 7 ...

Страница 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 installing a remote switch clamp as indicated by the following diagram This connection is only required for the master unit X3M wire specifications Wiring connection for low noise mode Wiring connection for lo...

Страница 19: ...put 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 opening 13 Separate by at least 50 mm 14 Fixed to the rear side of the support with the provided clamp 2 15 Perform wiring carefully so that the sound insulation of the compressor will not come off 16 Supp...

Страница 20: ...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 occurring In that case perform necessary repair and then conduct the air tightness test again 1The design pressure of the indoor unit locally procured needs to be 2 5 MPa or more Contact the manufacturer in advance f...

Страница 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 the holes we recommend you remove burrs in the knock holes and paint the edges and areas around the edges using the repair paint Make sure there is no gap in the Y joint 8 3 Checking of device and ins...

Страница 22: ...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 gas and liquid sides promptly Otherwise a piping explosion may result from liquid sealing Label pasting position z 1 Master unit 2 Additional refrigerant charge label 3 Additional refrigerant oil label 4...

Страница 23: ...sin 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 Operation switch S1S 4 Electric component box cover 5 LED H1P H7P 6 Push button switch BS1 BS5 7 DIP switch DS1 DS2 8 Inspection door right Making field settings Settings are made on the master unit on...

Страница 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 blinking 3 Press the RETURN button BS3 to display the first digit of the malfunction code on the LED 4 Press the SET button BS2 to display the second digit of the malfunction code on the LED 5 Press t...

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

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