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20B7Y1R

Air cooled refrigeration condensing unit

4P360438-1B – 2014.01

Installation manual

14

4

Remote switch (See Note 2)

5

Caution output

6

Warning output

7

Alarm panel

8

Run output

9

Panel

10

Earth

11

OFF: Normal mode
ON: Low noise mode

12

Indoor unit

13

Multi transmission (Q1, Q2)

Note

• Use conduit for power supply wiring.
• Make sure the weak electric wiring (i.e. for the remote controller, 

between units, etc.) and the power wiring do not pass near each 
other, keeping them at least 50 mm apart.
Proximity may cause electrical interference, malfunctions, and 
breakage.

• Be sure to connect the power wiring to the power wiring terminal 

block and secure it as described in 

"7-2 Procedure for incoming 

wiring" on page 14

.

• Do not connect the power supply to the terminal block for the 

transmission wiring for warning, alarm, operation output, and 
remote operation switch. Otherwise the entire system will be 
damaged.

• Transmission wiring should be secured as described 

in 

"7-3 Procedure for power supply wiring" on page 14

.

• Secure wiring with clamp such as insulation lock ties to avoid 

contact with piping.

• Shape the wires to prevent the structure such as the control box lid 

deforming. And close the cover firmly.

7-2 Procedure for incoming wiring

• Route high-voltage wiring (power supply wiring, earth wires, and 

warning/alarm/operation wiring) through wiring openings located 
on the side or front of the unit (knock holes) or on the bottom frame 
(knock holes).

• Route low-voltage wiring (for remote operating switches) through 

wiring openings (knock holes) located on the front of the unit or 
through wiring intakes.

Note

• Open the knock holes with a hammer or the like.
• After knocking out the holes, we recommend you remove any burrs 

and paint them using the repair paint to prevent rusting.

• When passing electrical wiring through the knock holes, protect the 

wiring with a conduit or bushings, making sure not to damage the 
wiring.

• If small animals might enter the unit, block off any gaps (hatching 

parts) with material (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

Fix the earth wire to the power supply wire (phase N) with the 
provided clamp (1).

8

Earth wire
Perform wiring so that the earth wire will not come in contact with 
lead wires of the compressor. Otherwise, noise generated may 
have a bad influence on other equipment.

9

Earth terminal

10

• When two wires are connected to a single terminal, connect 

them so that the rear sides of the crimp contacts face each 
other.

• Also, make sure the thinner wire is on top, securing the two wires 

simultaneously to the resin hook using the accessory clamp (1).

Power circuit, safety device, and cable requirements

• A power circuit (see the following table) must be provided for 

connection of the unit. This circuit must be protected with the 
required safety devices, i.e. a main switch, a slow blow fuse on 
each phase and an earth leakage circuit breaker.

• When using residual current operated circuit breakers, be sure to 

use a high-speed type (1 second or less) 200 mA rated residual 
operating current.

• Use copper conductors only.
• Use insulated wire for the power cord.
• Select the power supply cable type and size in accordance with 

relevant local and national regulations.

• Specifications for local wiring are in compliance with IEC60245.
• Use wire type H05VV when protected pipes are used.
• Use wire type H07RN-F when protected pipes are not used.

Through-hole cover

Cut the shaded area

Electric wiring label

(Rear side of control 
box lid)

Conduit

Piping outlet

High-voltage wiring

Low-voltage wiring

Knockout hole
(For low-voltage wiring)

Knockout hole
(For high-voltage wiring)

Burr

Phase and 

frequency

Voltage

Minimum circuit 

amp.

Recommended 

fuses

LREQ15

3~ 50Hz

380-415V

62.8A

70A

LREQ20

3~ 50Hz

380-415V

70.0A

80A

1

2

3

4

5

X1M

N

L3

L1

L2

4

4

6

7

8

9

10

Terminal block

Crip style terminal

Wire: narrow

Clamp (1)

Wire: thick

Resin hook

Содержание LREQ15B7Y1R

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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...

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 un...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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...

Страница 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...

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 installin...

Страница 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...

Страница 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...

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 t...

Страница 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...

Страница 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...

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 b...

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

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