Daikin LRYEQ-AY - Инструкция по эксплуатации - Страница 15

LRYEQ16A7Y1

CONVENI-PACK

4P448939-1A – 2016.07

Installation manual

12

7.

Expansion Valve Selection

This model has a larger degree of subcooling (subcooling ratio= condensing temperature - liquid refrigerant temperature at outdoor unit outlet) for 
the liquid refrigerant of a refrigerator than that of refrigerators without a subcooling mechanism as it cools the liquid refrigerant with a plate type heat 
exchanger.

When selecting an expansion valve for the load, select one based on the subcooling ratio for the liquid refrigerant in the following table.

• Calculated example: The subcooling ratio with evaporative temperature at –10°C  and condensing temperature at 45°C is equal to 19K (liquid 

refrigerant temperature at 26°C).

The liquid temperature in the booster unit is further decreased.
The liquid temperature of the refrigeration showcase inlet is approximately +10 degrees of the target evaporating temperature of the outdoor unit.

8.

FIELD WIRING

To Electric Engineering Contractors

• Be sure to install an earth leakage breaker. The product incorpo-

rates inverter equipment. In order to prevent the malfunctioning of 
the earth leakage breaker, make sure that the earth leakage 
breaker withstands harmonic interference.

• Do not operate the CONVENI-PACK until refrigerant piping work is 

completed, or otherwise the compressor will malfunction.

• Do not remove any electrical components such as thermistors or 

sensors when connecting power supply wires or transmission 
wires. The compressor may malfunction if the CONVENI-PACK is 
operated with such electrical components removed. 

CAUTION

• All field wiring and components must be installed by a licensed 

electrician and must comply with relevant local and national regu-
lations.

• Be sure to use a dedicated power circuit. Never use a power supply 

shared by another appliance.

• Never install a phase advancing capacitor. As this unit is equipped 

with an inverter, installing a phase advancing capacitor will not only 
deteriorate power factor improvement effect, but also may cause 
capacitor abnormal heating accident due to high-frequency waves.

• Only proceed with wiring work after blocking off all power.
• Always ground wires in accordance with relevant local and national 

regulations.

• This machine includes an inverter device. Connect earth and leave 

charge to eliminate the impact on other devices by reducing noise 
generated from the inverter device and to prevent leaked current 
from being charged in the outer hull of the product.

• Do not connect the ground wire to gas pipes, sewage pipes, light-

ning rods, or telephone ground wires.
Gas pipes: can explode or catch fire if there is a gas leak.
Sewage pipes: no grounding effect is possible if hard plastic pip-
ing is used.
Telephone ground wires and lightning rods: dangerous when 
struck by lightning due to abnormal rise in electrical potential in the 
grounding.

• Be sure 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 pre-
vent 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.

• Electrical wiring must be done in accordance with the wiring dia-

grams and the description herein.

• Do not operate until refrigerant piping work is completed.

(If operated before complete the piping work, the compressor may 
be broken down.)

• Never remove thermistor, sensor or etc. when connecting power 

wiring and transmission wiring.
(If operated with thermistor, sensor or etc. removed, the compres-
sor may be broken down.)

• This product have reversed phase protection detector that only 

works when the power is turned on. If there exists black out or the 
power goes on and off which the product is operating, attach a 
reversed phase protection circuit. Running the product in reversed 
phase may break the compressor and other parts.

• Attach the power wire securely. Introducing power with a missing 

N-phase or with a mistaken N-phase will break the unit.

• Never connect the power supply in reversed phase. 

The unit can not operate normally in reversed phase.
If you connect in reversed phase, replace two of the three phases.

• Make sure the electrical unbalance ratio is no greater than 2%. If it 

is larger than this, the unit’s lifespan will be reduced.
If the ratio exceeds 4%, the unit will shut down and an malfunction 
code will be displayed on the indoor remote controller.

• Connect the wire securely using designated wire and fix it with 

attached clamp without applying external pressure on the terminal 
parts (terminal for power wiring, terminal for transmission wiring 
and earth terminal).

• Install a switch that allows you to switch all poles from the main 

power supply.

Subcooling ratio (K) (subcooling ratio = condensing temperature - liquid refrigerant temperature)

Condensing 
temperature

Evaporative 

temperature

-45°C

-40°C

-35°C

-30°C

-25°C

-20°C

-15°C

-10°C

-5°C

-0°C

5°C

10°C

20°C

31K

28K

26K

23K

20K

18K

15K

13K

11K

9K

6K

4K

25°C

31K

29K

26K

24K

21K

19K

16K

14K

12K

10K

8K

6K

30°C

32K

29K

27

24K

22K

19K

17K

15K

13K

11K

9K

7K

35°C

32K

30K

27K

25K

23K

20K

18K

16K

14K

12K

10K

9K

40°C

32K

30K

28K

26K

23K

21K

19K

17K

16K

14K

13K

10K

45°C

33K

31K

29K

26K

24K

22K

21K

19K

17K

15K

14K

12K

50°C

34K

31K

29K

27K

25K

24K

22K

20K

18K

17K

15K

14K

55°C

34K

32K

30K

28K

27K

25K

23K

22K

20K

18K

17K

16K

4PEN448939-1A.book  Page 12  Monday, September 5, 2016  7:12 PM