Installati on Manual NRK - Aermecaermec.us/products/airtowater/NRK/Installation Manual.pdf · 2019. 9. 25. · INRKIY_14.02_5167555_00 7 NRK 0200-0700 HA-HE EN RECEIPT AND HANDLING

• Reversible Heat Pumps• Air-Water• Outdoor Installation• Axial Fans• Scroll Compressor• High Efficiency

Installati on ManualInstallati on Manual

EN

NRK 0150÷0700

INRKIY_15.11_5167555_01

stefano.pegoraroAERMEC_Airconditioning

Dear Customer,Thank you for choosing an AERMEC product. This product is the result of many years of experience andin-depth engineering research, and it is built using top quality materials and advanced technologies.In addition. We constantly monitor the quality level, and as a result AERMEC products are synonymous with Safety, Quality, and Reliability.

The data may be subject to modifications deemed necessary for improving the product at any time andwithout forewarning.

Thank you again.AERMEC S.p.A

1. General warnings .............................................................................. 6

2. Receipt and handling ........................................................................ 7

3. Dimensions/liftingpoints/antivibrantpositionmounts(mm) ........ 8

4. Positionofhydraulicconnections ................................................... 13

5. Main hydraulic circuits .................................................................... 19

6. System loading ................................................................................ 24

7. System emptyng.............................................................................. 24

8. System draining ............................................................................... 24

9. Percentageweightsdistributiononsupportsversion ..................... 25

10. Electricconnections ........................................................................ 29

11. Electric data table ........................................................................... 30

12. Relectronic control .......................................................................... 31

13. Auxiliaryconnections ...................................................................... 32

14. Userinterface(PGD1) ...................................................................... 33

15. Start-up procedure .......................................................................... 34

16. Menùstructureandnavigation ....................................................... 35

17. Useroperatingproedures ............................................................... 36

18. Control and commissioning ............................................................ 37

19. Routinemaintenance ..................................................................... 38

20. Extraordinary maintenance ............................................................ 38

21. Troubleshooting ............................................................................. 39

22. Distributor ....................................................................................... 40

Index

6 INRKIY_14.02_5167555_00

NRK0200-0700 HA-HE

EN

1. GENERAL WARNINGS

GENERAL WARNINGS

The units are constructed according to the recognised technical standards and safety regulations.They are designed for the production of chilled water for technical installations.Any contractual or extracontractual liability of the Company is excluded for injury/damage to persons, animals or objects owing to installation, regulation and maintenance errors or improper use. All uses not expressly indicated in this manual are prohibited.

PRESERVATION OF THE DOCUMENTATION

1. The instructions along with all the related documentation must be given to the user of the system, who assumes the responsibility to conserve the instructions so that they are always at hand in case of need.

2. Read this sheet carefully; the execution of all works must be performed by qualified staff, according to Standards in force on this subject in differentcountries.(D.M.329/2004).

3. The appliance warranty does not cover the costs for ladders, scaffolding or other elevation sys-tems, which may become necessary for carrying out interventions under warranty.

4. Do not modify or tamper with the heat pump as dangerous situations can be created and the manufacturer will not be liable for any damage caused. The warranty shall be become null and void if the above-mentioned indications are not respected.

WARNINGS REGARDING SAFETY AND INSTALLATION STANDARDS

1. Before beginning any operation, READ THESE INSTRUCTIONS CAREFULLY AND CARRY OUT THE SAFETY CHECKS TO AVOID ALL RISKS.

2. All the staff involved must have thorough knowledge of the operations and any dangers that may arise at the moment in which the installation operations are carried out.

AERMEC will not assume any responsibility for damage due to failure to follow these instructions.

PRODUCT IDENTIFICATION

The units can be identified through:

- PACKING LABEL which shows the product identification data.- TECHNICAL PLATE

7INRKIY_14.02_5167555_00

NRK 0200-0700 HA-HE

EN

RECEIPT AND HANDLING

• The machine is delivered from the factory wrapped in estincoil.

• Before handling the unit, verify the lifting capaci-ty of the machines used.

• Handling must be performed by qualified, suita-bly equipped staff.

HANDLING THE MACHINE:

Whenever the machine must be lifted using belts, place protections between the belts and the frame-work to prevent damage to the structure.

LIFTING REGULATIONS

1. All panels must be tightly fixed before handling the unit;

2. Before lifting, check the specific weight on the technical plate;

3. Use all, and only, the lifting points indicated;4. Use ropes in compliance with Standards and of

equal length;5. Use a spacer beam in compliance with Standards

(notincluded);6. Handle the unit with care and without sudden

movements

SELECTION AND PLACE OF INSTALLATION

The Units sent from the factory already inspected and only requires electric and hydraulic connections in the place of installation.

Before beginning the installation process, decide with the customer where the unit is to be installed, whilst paying attention to the following:

1. The support surface must be capable of supporting the unit weight.

2. The safety distances between the units and other appliances or structures must be scrupulously respected.

3. The unit must be installed by a qualified technician in compliance with national laws in the country of destination.

4. It is mandatory to envision the necessary technical spaces in order to allow ROUTINE AND EXTRAORDINARY MAINTENANCE interventions.

5. Remember that during operation, the chiller can cause vibrations; therefore anti-vibration mounts (ACCESSORIES) are recommended, which are fixed to the base according to the assembly layout.

6. Fix the unit checking that it is level.

ATTENTION: • It is prohibited to stop under the unit during

lifting operations.• The units CANNOT be stacked.• The unit must be installed in order to make

possible the maintenance and / or repair.

LIFT THE UNIT

MINIMUM TECHNICAL

ATTENTION:In windy areas, for correct operation it is recommended to install a windbreak barrier.It should be installed if wind velocity is beyond 2.5 m/s.

2. RECEIPT AND HANDLING

ATTENTIONLifting rods NOT supplied.

ATTENTION:Diameter of holes Ø ____

ATTENTIONThe unit comes fixed on a pallet. Use forklifts for handling

40

800

800800

1100

3000

800

800800

1100

3000

800

800800

1100

3000

NRK_0300 NRK_0330_0550 NRK_0600_0700

8 INRKIY_14.02_5167555_00

NRK0200-0700 HA-HE

EN

NRK_0300 [HA]

640 6001960

Ø 40 Ø 40

1640

3200

32001100

80

DIMENSIONI (mm) PUNTI DI SOLLEVAMENTO (mm)

POSIZIONE ANTIVIBRANTI (mm)

Modello

Vista Sotto

[Tutte]

9INRKIY_14.02_5167555_00

NRK 0200-0700 HA-HE

EN

NRK_0330÷0550[HA-HE]

1875

3330

3330

1100735 2020 575 80

Ø 40 Ø 40

DIMENSIONS (mm) PUNTI DI SOLLEVAMENTO (mm)

ANTIVIBRANT POSITION MOUNTS (mm)

Model

Bottom View

LIFTING POINTS (mm)

[All]

10 INRKIY_14.02_5167555_00

NRK0200-0700 HA-HE

EN

NRK_0650÷0700[HA-HE]

1875

4330

43301100

720 2945 665

Ø 40 Ø 40

80



Model

Bottom View

LIFTING POINTS (mm)

[All]NRK0600-0700HA

11INRKIY_14.02_5167555_00

NRK 0200-0700 HA-HE

EN

3. POSITION OF HYDRAULIC CONNECTIONS

NRK_0650÷0700[HA-HE]

1875

4330

43301100

720 2945 665

Ø 40 Ø 40

80



Model

Bottom View

LIFTING POINTS (mm)

[All]

NRK_0200 ÷ 330_HE[00]

NRK_0350 ÷ 700_HA_HE[00]

NRK Version [00]

IN [00] Ø 2”1/2

OUT [00] Ø 2”1/2

IN [00] Ø 2”1/2

OUT [00] Ø 2”1/2

NRK0300HA

NRK0300-0700HA

12 INRKIY_14.02_5167555_00

NRK0200-0700 HA-HE

EN

NRK_0200 ÷ 330_HE[01÷08]

NRK_0350 ÷ 700_HA_HE[01÷08]

NRK Versione [01÷08]

OUT [01÷08] Ø 2”1/2

OUT [01÷08] Ø 2”1/2

IN [01÷08] Ø 2”1/2

IN [01÷08] Ø 2”1/2

NRK0300HA

NRK0300-0700HA

13INRKIY_14.02_5167555_00

NRK 0200-0700 HA-HE

EN

NRK_0200 ÷ 330_HE[P1÷P4]

NRK_0350 ÷ 700_HA_HE[P1÷P4]

NRK Versione [P1÷P4]

IN [P1÷P4] Ø 2”1/2

IN [P1÷P4] Ø 2”1/2

OUT [P1÷P4] Ø 2”1/2

OUT [P1÷P4] Ø 2”1/2

NRK Versione [P1÷P4]

IN [P1÷P4] Ø 2”1/2

IN [P1÷P4] Ø 2”1/2

OUT [P1÷P4] Ø 2”1/2

OUT [P1÷P4] Ø 2”1/2

NRK0300HA

NRK0300-0700HA

14 INRKIY_14.02_5167555_00

NRK0200-0700 HA-HE

EN

NRK_0200 ÷ 330_HE_D[00]

NRK_0350 ÷ 700_HA_HE_D[00]

NRK Versione D [00]

OUT [D]Ø 1”1/2

IN [00] Ø 2”1/2

IN [00] Ø 2”1/2

OUT [00] Ø 2”1/2

OUT [00] Ø 2”1/2

IN [D] Ø 1”1/2

OUT [D] Ø 1”1/2

IN [D] Ø 1”1/2

NRK0300HA

NRK0300-0700HA

15INRKIY_14.02_5167555_00

NRK 0200-0700 HA-HE

EN

NRK_0200 ÷ 330_HE_D[01÷08]

NRK_0350 ÷ 700_HA_HE_D[01÷08]

NRK Versione D [01÷08]

OUT [D]Ø 1”1/2

OUT [01÷08] Ø 2”1/2

OUT [01÷08] Ø 2”1/2

IN [01÷08] Ø 2”1/2

IN [01÷08] Ø 2”1/2

IN [D] Ø 1”1/2

OUT [D] Ø 1”1/2

IN [D] Ø 1”1/2

NRK0300HA

NRK0300-0700HA

16 INRKIY_14.02_5167555_00

NRK0200-0700 HA-HE

EN

NRK_0200 ÷ 330_HE_D[P1÷P4]

NRK_0350 ÷ 700_HA_HE_D[P1÷P4]

IN [P1÷P4] Ø 2”1/2

OUT [P1÷P4] Ø 2”1/2

IN [D] Ø 1”1/2

OUT [D] Ø 1”1/2

OUT [D]Ø 1”1/2

IN [P1÷P4] Ø 2”1/2

OUT [P1÷P4] Ø 2”1/2

IN [D] Ø 1”1/2

NRK Versione D[P1÷P4]NRK0300HA

NRK0300-0700HA

17INRKIY_14.02_5167555_00

NRK 0200-0700 HA-HE

EN

MAIN HYDRAUL IC CIRCUITS

INTERNAL HYDRAULIC CIRCUIT

Model:

HYDRAULIC COMPONENTS RECOMMENDED OUTSIDE THE UNIT

ATTENTION

.......................................................... 1. The choice and installation of compo-nents outside the units is the installer's responsibility, who must operate ac-cording to the code of practice and in compliance with the Standard in force in the country of destination.

2. The hydraulic connection pipes to the machine must be suitably dimen-sioned for the effective water flow rate requested by the system when run-ning. The water flow rate to the heat exchanger must always be constant.

3. Wash the system thoroughly before connecting the unit. This cleaning operation will eliminate any residues such as welding drips, scale, rust, or other impurities from the piping. These substances can also deposit inside and cause machine malfunctioning. The connection piping must be adequate-ly supported so that its weight is not borne by the appliance.

4. An appropriate load/reintegration system must be prepared (if not in-stalled), which is engaged on the re-turn line, along with a drain cock in the lowest part of the system. Water disconnectors must be used in systems loaded with anti-freeze or where par-ticular legal provisions apply. Particular supply/reintegration waters must be conditioned with appropriate treat-ment systems. The "water features" provided in the table can be used as a reference.

5. It is prohibited to release water-glycol mixtures into the environment.

6. It is recommended to design systems with high water content (minimumrecommendedvaluesshownintable),in order to limit:

• The hourly number of inversions be-tween operating modes.

• Drop in water temperature during win-ter defrost cycles.

WATER FEATURESPH 6-8Electric conductivity Lessthan200mV/cm(25°C)Chloride ions Less than 50 ppmSulphuric acid ions Less than 50 ppmTotal iron Less than 0.3 ppmAlkalinity M Less than 50 ppmTotal hardness Less than 50 ppmSulphur ions noneAmmonia ions NoneSilicone ions Less than 30 ppm

NRK 0300 ÷ 0700[00]

1

36 7

5

5

6 12 772

1313 13

4

10

11

849

14

15

NRK 0200 ÷ 0700_HA_HE[00]

COMPONENTS SUPPLIED AS PER STANDARD

1 - Plate exchanger2 - Water filter3 - Fow switch4 - Air vent valve5 - Water temperature probes (IN)13 - Drain valve

RECOMMENDED COMPONENTS NOT SUPPLIED FOR WHICH INSTALLER IS RESPONSIBLE

4 - Air vent valve6 - Anti-vibration joints7 - Cut-off valve8 - Safety valve9 - Expansion Tank10 - System buffer tank (installation recommended whenever the system water content is less than that indicated in tab.)11 - Antifreeze electric heater12 - Pump13 - Drain valve14 - Gauge15 - Automatic fill point

4. MAIN HYDRAULIC CIRCUITS

NRK 0150

NRK 0200

NRK0300

NRK 0330

NRK0350

NRK 0500

NRK0550

NRK0600

NRK0650

NRK0700

n°/n° 2/2 2/2 2/2 2/2 2/2 2/2 2/2 4/2 4/2 4/2l/kW 7 7 7 7 7 7 7 7 7 7l/kW 14 14 14 14 14 14 14 14 14 14

MINIMUM WATER CONTENT

Compressors / CircuitsMinimum recomended water contentMinimum recomended water content (*)

(*)Minimumwatercontentforprocessapplicationsoroperatingatlowexternaltemperaturesandlowload.Control on water inlet temperature.DesignΔtlessthan5°C.

18 INRKIY_14.02_5167555_00

NRK0200-0700 HA-HE

EN



Model:


ATTENTION










NRK_0300÷0700[P1-P3]

1

5

6 73

5612 77

13 13

49 10

11

849

14

15

NRK 0200 ÷ 0700_HA_HE[P1_P3]

2


1 - Plate exchanger2 - Water filter3 - Fow switch4 - Air vent valve5 - Water temperature probes (IN/OUT)9 - Expansion Tank12 - Pump13 - Drain valve

RECOMMENDED COMPONENTS NOT SUPPLIED FOR WHICH INSTALLER IS RESPONSIBLE4 - Air vent valve6 - Anti-vibration joints7 - Cut-off valve8 - Safety valve9 - Expansion Tank10 - System buffer tank (installation recommended whenever the system water content is less than that indicated in tab.)11 - Antifreeze electric heater13 - Drain valve14 - Gauge15 - Automatic fill point

NRK 0150

NRK 0200

NRK0300

NRK 0330

NRK0350

NRK 0500

NRK0550

NRK0600

NRK0650

NRK0700

n°/n° 2/2 2/2 2/2 2/2 2/2 2/2 2/2 4/2 4/2 4/2l/kW 7 7 7 7 7 7 7 7 7 7l/kW 14 14 14 14 14 14 14 14 14 14




19INRKIY_14.02_5167555_00

NRK 0200-0700 HA-HE

EN



Model:


ATTENTION










NRK_0300÷0700[P2-P4]

NRK 0200 ÷ 0700_HA_HE[P2_P4]

1

5

6 73

56 77

13 13

49 10

11

849

14

15

2

12

12

17

17


1 - Plate exchanger2 - Water filter3 - Fow switch4 - Air vent valve5 - Water temperature probes (IN/OUT)9 - Expansion Tank12 - Pump13 - Drain valve17- One way valve

RECOMMENDED COMPONENTS NOT SUPPLIED FOR WHICH INSTALLER IS RESPONSIBLE4 - Air vent valve6 - Anti-vibration joints7 - Cut-off valve8 - Safety valve9 - Expansion Tank10 - System buffer tank (installation recommended whenever the system water content is less than that indicated in tab.)11 - Antifreeze electric heater13 - Drain valve14 - Gauge15 - Automatic fill point

NRK 0150

NRK 0200

NRK0300

NRK 0330

NRK0350

NRK 0500

NRK0550

NRK0600

NRK0650

NRK0700

n°/n° 2/2 2/2 2/2 2/2 2/2 2/2 2/2 4/2 4/2 4/2l/kW 7 7 7 7 7 7 7 7 7 7l/kW 14 14 14 14 14 14 14 14 14 14




20 INRKIY_14.02_5167555_00

NRK0200-0700 HA-HE

EN



Model:


ATTENTION










NRK 0200 ÷ 0700_HA_HE[01_03_05_07]

1

5

3

5 12 7

13

4

6 7

6 7

1410

11

849

15

2


1 - Plate exchanger2 - Water filter3 - Fow switch4 - Air vent valve5 - Water temperature probes (IN/OUT)7 - Cut-off valve8 - Safety valve9 - Expansion Tank10 - System buffer tank (installation recommended whenever the system water content is less than that indicated in tab.)11 - Antifreeze electric heater12 - Pump13 - Drain valve


6 - Anti-vibration joints7 - Cut-off valve14 - Gauge15 - Automatic fill point

NRK_0300÷0700[01-03]

NRK 0200

NRK0280

NRK0300

NRK 0330

NRK0350

NRK0300

NRK 0500

NRK0550

NRK0600

NRK0650

NRK0700

n°/n° 2/2 2/2 2/2 2/2 2/2 2/2 3/2 4/2 4/2 4/2 4/2l/kW 7 7 7 7 7 7 7 7 7 7 7l/kW 14 14 14 14 14 14 14 14 14 14 14




21INRKIY_14.02_5167555_00

NRK 0200-0700 HA-HE

EN



Model:


ATTENTION












Model:


ATTENTION










17

17

NRK 0200 ÷ 0700_HA_HE[02_04_06_08]

1

5

3

57

13

4

6 7

6 7

1410

11

849

15

2

12

12


1 - Plate exchanger2 - Water filter3 - Fow switch4 - Air vent valve5 - Water temperature probes (IN/OUT)7 - Cut-off valve8 - Safety valve9 - Expansion Tank10 - System buffer tank (installation recommended whenever the system water content is less than that indicated in tab.)11 - Antifreeze electric heater12 - Pump13 - Drain valve17- One way valve


6 - Anti-vibration joints7 - Cut-off valve14 - Gauge15 - Automatic fill point

NRK_0300÷0700[02-04]

NRK 0200

NRK0280

NRK0300

NRK 0330

NRK0350

NRK0300

NRK 0500

NRK0550

NRK0600

NRK0650

NRK0700

n°/n° 2/2 2/2 2/2 2/2 2/2 2/2 3/2 4/2 4/2 4/2 4/2l/kW 7 7 7 7 7 7 7 7 7 7 7l/kW 14 14 14 14 14 14 14 14 14 14 14




22 INRKIY_14.02_5167555_00

NRK0200-0700 HA-HE

EN

SYSTEM LOADING

Before starting loading, position the unit master switch at OFF1. Check that system drain cock is closed2. Open all system and relative terminals vent valves.3. Open all system cut-off devices4. Start filling by slowly opening the system water

load cock, outside the appliance.5. When water starts to escape from the terminal

vent valves, close them and continue loading until the envisioned pressure value for the system is reached.

SYSTEM EMPTYING

1. Before beginning emptying, place the unit master switch at OFF.

2. Check that the system water loading/reintegration cock is closed.

3. Open the drain cock outside the appliance and all system and relative terminals vent valves

SYSTEM DRAINING

ATTENTIONIf the system should stop during the winter period, the water present in the exchanger may freeze, causing irreparable damage to the exchanger it self.There are three solutions possible for the prevention of freezing:1. Drain the water from the appliance completely.2. Operation with glycoled water, with a percentage of glycol selected on the basis of theminimum external temperature envisioned.3. Use of resistances.In this case, the resistances must be live for the entireperiod that freezing may

• Check the hydraulic sealing of the joints. • It is recommended to repeat this operation after the appliance has operated for several hours and to periodically check the system pressure. Reintegration must be performed with machine off(pumpOff).

• If the system contains liquid anti-freeze, this must not be drained freely, as it is a pollutant. It should be collected and if possible reused.

ATTENTION

5. SYSTEM LOADING 6. SYSTEM EMPTYNG 7. SYSTEM DRAINING

23INRKIY_14.02_5167555_00

NRK 0200-0700 HA-HE

EN

NRK_0200_0300[HA-HE] PESO A VUOTO

NRKKIT

VTGx Gy 1 2 3 4 5 6

Gy

Gx1 3

2 4

Top View

Gy

Gx1

2

3

4

5

6

Top View

NRK_0200_0300[HA-HE]

NRKKIT

VTGx Gy 1 2 3 4 5 6

NRK0200 00 804 557 1007 24% 27% 23% 26% - - 17

NRK0200 01-03 934 556 1092 22% 24% 25% 28% - - 13

NRK0200D 03 1030 556 1092 22% 24% 25% 28% - - 13

NRK0200 02-04 949 556 1109 22% 24% 26% 28% - - 13

NRK0200 P1 829 556 1042 23% 26% 24% 27% - - 13

NRK0200 P2 844 556 1062 23% 25% 25% 27% - - 13

NRK0200 P3 859 556 1081 22% 25% 25% 28% - - 13

NRK0200 P4 874 556 1100 22% 24% 26% 28% - - 13

NRK0280 00 876 557 1003 24% 27% 23% 26% - - 17

NRK0280 01-03 1006 556 1089 22% 25% 25% 28% - - 13

NRK0280 02-04 1021 556 1105 22% 24% 26% 28% - - 13

NRK0280 P1 901 557 1038 23% 26% 24% 27% - - 17

NRK0280 P2 916 556 1058 23% 25% 25% 27% - - 17

NRK0280 P3 931 556 1077 23% 25% 25% 28% - - 17

NRK0280 P4 946 556 1096 22% 24% 25% 28% - - 17

NRK0300 00 960 556 1163 21% 23% 27% 30% - - 17

NRK0300 01-03 1090 556 1109 22% 24% 26% 28% - - 13

NRK0300 02-04 1105 556 1236 19% 21% 29% 32% - - 13

NRK0300 P1 985 556 1065 23% 25% 25% 27% - - 17

NRK0300 P2 1000 556 1083 22% 25% 25% 28% - - 17

NRK0300 P3 1015 556 1100 22% 24% 26% 28% - - 17

NRK0300 P4 1030 556 1117 22% 24% 26% 29% - - 17

NRK0200 00 834 556 1017 24% 26% 24% 26% - - 17

NRK0200 01-03 1264 554 1204 20% 22% 28% 31% - - 13

NRK0200D 03 1030 556 1092 22% 24% 25% 28% - - 13

NRK0200 02-04 1279 554 1216 19% 21% 28% 31% - - 13

NRK0200 P1 869 556 1056 23% 25% 24% 27% - - 13

NRK0200 P2 884 556 1075 23% 25% 25% 28% - - 13

NRK0200 P3 899 556 1093 22% 24% 25% 28% - - 13

NRK0200 P4 914 556 1111 22% 24% 26% 28% - - 13

NRK0280 00 907 557 1013 24% 27% 23% 26% - - 17

NRK0280 01-03 1357 554 1206 20% 22% 28% 31% - - 13

NRK0280 02-04 1372 554 1217 19% 21% 28% 31% - - 13

NRK0280 P1 942 556 1052 23% 26% 24% 27% - - 17

NRK0280 P2 957 556 1070 23% 25% 25% 27% - - 17

NRK0280 P3 972 556 1089 22% 25% 25% 28% - - 17

NRK0280 P4 987 556 1106 22% 24% 26% 28% - - 17

NRK0300 00 991 556 1167 20% 23% 27% 30% - - 17

NRK0300 01-03 1423 554 1210 20% 21% 28% 31% - - 13

NRK0300 02-04 1421 554 1304 17% 19% 30% 33% - - 13

NRK0300 P1 1028 556 1076 23% 25% 25% 28% - - 17

NRK0300 P2 1026 556 1093 22% 24% 25% 28% - - 17

NRK0300 P3 1041 556 1110 22% 24% 26% 28% - - 17

NRK0300 P4 1056 556 1126 21% 24% 26% 29% - - 17

Pallet: 31kg

Pallet: 31kg

EMPTY

TYPEWEIGHT

(kg)

BARYCENTRE WEIGHT DISTRIBUTION PERCENTAGE ON SU PPOR TS UNIT OPER ATING (%) KIT

VTGx Gy 1 2 3 4 5 6

PERCENTAGE WEIGHT DISTRIBUTION ON SU PPOR TS VERS ION

WEIGHT OPERATING

TYPEWEIGHT

(kg)BARYCENTRE WEIGHT DISTRIBUTION PERCENTAGE ON SU PPOR TS UNIT OPERATING (%) KIT

VTGx Gy 1 2 3 4 5 6

8. PERCENTAGE WEIGHTS DISTRIBUTION ON SUPPORTS VERSION

24 INRKIY_14.02_5167555_00

NRK0200-0700 HA-HE

EN

NRK_0330_0500[HA-HE]

NRKKIT

VTGx Gy 1 2 3 4 5 6

NRK_0330_0500[HA-HE]

NRLKIT

VTGx Gy 1 2 3 4 5 6

Gy

Gx1 3

2 4

Top View

Gy

Gx1

2

3

4

5

6

Top View

NRK0330 00 967 557 1156 21% 23% 27% 30% - - 17

NRK0330 01-03 1097 556 1104 22% 24% 26% 28% - - 13

NRK0330 02-04 1112 556 1229 19% 21% 29% 31% - - 13

NRK0330 P1 992 556 1059 23% 25% 25% 27% - - 17

NRK0330 P2 1007 556 1077 23% 25% 25% 28% - - 17

NRK0330 P3 1022 556 1094 22% 24% 25% 28% - - 17

NRK0330 P4 1037 556 1111 22% 24% 26% 28% - - 17

NRK0350 00 1118 526 1521 28% 26% 24% 22% - - 13

NRK0350 01-03 1266 528 1613 26% 24% 26% 24% - - 10

NRK0350 02-04 1284 528 1633 26% 24% 26% 24% - - 10

NRK0350 P1 1146 526 1557 27% 25% 25% 23% - - 13

NRK0350 P2 1164 526 1580 27% 25% 25% 23% - - 13

NRK0350 P3 1182 527 1602 27% 24% 25% 23% - - 13

NRK0350 P4 1200 527 1623 26% 24% 26% 24% - - 13

NRK0500 00 1264 525 1518 28% 26% 24% 22% - - 13

NRK0500 01-03 1412 527 1611 26% 24% 26% 24% - - 10

NRK0500 02-04 1430 528 1630 26% 24% 26% 24% - - 10

NRK0500 P1 1292 525 1555 27% 25% 25% 23% - - 13

NRK0500 P2 1310 526 1577 27% 25% 25% 23% - - 13

NRK0500 P3 1328 526 1599 27% 25% 25% 23% - - 13

NRK0500 P4 1346 526 1620 26% 24% 26% 24% - - 13

NRK0330 00 1000 556 1167 20% 23% 27% 30% - - 17

NRK0330 01-03 1430 554 1205 20% 22% 28% 31% - - 13

NRK0330 02-04 1445 554 1298 18% 19% 30% 33% - - 13

NRK0330 P1 1035 556 1070 23% 25% 25% 27% - - 17

NRK0330 P2 1050 556 1087 22% 25% 25% 28% - - 17

NRK0330 P3 1065 556 1103 22% 24% 26% 28% - - 17

NRK0330 P4 1080 556 1119 22% 24% 26% 29% - - 17

NRK0350 00 1167 526 1537 28% 25% 24% 22% - - 13

NRK0350 01-03 1785 534 1785 23% 22% 28% 26% - - 10

NRK0350 02-04 1803 534 1798 23% 22% 28% 27% - - 10

NRK0350 P1 1205 527 1577 27% 25% 25% 23% - - 13

NRK0350 P2 1223 527 1598 27% 25% 25% 23% - - 13

NRK0350 P3 1241 528 1619 26% 24% 26% 24% - - 13

NRK0350 P4 1259 528 1639 26% 24% 26% 24% - - 13

NRK0500 00 1313 526 1534 28% 25% 24% 22% - - 13

NRK0500 01-03 1931 534 1783 24% 22% 28% 26% - - 10

NRK0500 02-04 1949 534 1796 23% 22% 28% 27% - - 10

NRK0500 P1 1351 526 1574 27% 25% 25% 23% - - 13

NRK0500 P2 1369 527 1595 27% 25% 25% 23% - - 13

NRK0500 P3 1387 527 1616 26% 24% 26% 24% - - 13

NRK0500 P4 1405 527 1636 26% 24% 26% 24% - - 13

PALLET: 31KG (NRK0330)PALLET: 37KG (NRK0350 ÷ 0600)

WEIGHT EMPTY

TYPE WEIGHTBARYCENTRE WEIGHT DISTRIBUTION PERCENTAGE ON SU PPOR TS UNIT OPERATING (%) KIT

VTGx Gy 1 2 3 4 5 6

WEIGHT OPERATING


VTGx Gy 1 2 3 4 5 6

25INRKIY_14.02_5167555_00

NRK 0200-0700 HA-HE

EN

NRK_0550_0650[HA-HE]

NRKKIT

VTGx Gy 1 2 3 4 5 6

NRK_0550_0650[HA-HE]

NRKKIT

VTGx Gy 1 2 3 4 5 6

Gy

Gx1 3

2 4

Top View

Gy

Gx1

2

3

4

5

6

Top View

NRK0550 00 1325 525 1518 28% 26% 24% 22% - - 13

NRK0550 01-03 1473 527 1611 26% 24% 26% 24% - - 10

NRK0550 02-04 1491 528 1630 26% 24% 26% 24% - - 10

NRK0550 P1 1353 525 1555 27% 25% 25% 23% - - 13

NRK0550 P2 1371 526 1577 27% 25% 25% 23% - - 13

NRK0550 P3 1389 526 1599 27% 25% 25% 23% - - 13

NRK0550 P4 1407 526 1620 26% 24% 26% 24% - - 13

NRK0600 00 1367 551 1490 27% 27% 23% 23% - - 13

NRK0600 01-03 1515 551 1578 26% 26% 24% 24% - - 10

NRK0600 02-04 1533 551 1596 26% 26% 24% 24% - - 10

NRK0600 P1 1395 551 1524 27% 27% 23% 23% - - 13

NRK0600 P2 1413 551 1545 26% 26% 24% 24% - - 13

NRK0600 P3 1431 551 1565 26% 26% 24% 24% - - 13

NRK0600 P4 1449 551 1585 26% 26% 24% 24% - - 13

NRK0650 00 1562 552 1928 8% 8% 31% 31% 11% 11% 22

NRK0650 01-03 1710 552 2005 7% 7% 32% 32% 12% 12% 22

NRK0650 02-04 1728 552 2021 6% 7% 32% 32% 12% 12% 22

NRK0650 P1 1614 552 1981 7% 8% 31% 31% 11% 12% 22

NRK0650 P2 1656 552 2021 7% 7% 31% 31% 12% 12% 22

NRK0650 P3 1698 552 2060 8% 8% 31% 30% 12% 12% 22

NRK0650 P4 1740 552 2096 8% 8% 31% 30% 12% 12% 22

NRK0550 00 1374 526 1534 28% 25% 24% 22% - - 13

NRK0550 01-03 1992 534 1783 24% 22% 28% 26% - - 10

NRK0550 02-04 2010 534 1796 23% 22% 28% 27% - - 10

NRK0550 P1 1412 526 1574 27% 25% 25% 23% - - 13

NRK0550 P2 1430 527 1595 27% 25% 25% 23% - - 13

NRK0550 P3 1448 527 1616 26% 24% 26% 24% - - 13

NRK0550 P4 1466 527 1636 26% 24% 26% 24% - -

NRK0600 00 1420 551 1505 27% 27% 23% 23% - - 13

NRK0600 01-03 2038 551 1747 23% 23% 27% 27% - - 10

NRK0600 02-04 2056 551 1760 23% 23% 27% 27% - - 10

NRK0600 P1 1458 551 1542 26% 27% 23% 24% - - 13

NRK0600 P2 1476 551 1562 26% 26% 24% 24% - - 13

NRK0600 P3 1494 551 1582 26% 26% 24% 24% - - 13

NRK0600 P4 1512 551 1600 26% 26% 24% 24% - - 13

NRK0650 00 1629 552 1936 8% 8% 31% 32% 10% 10% 22

NRK0650 01-03 2247 552 2156 5% 5% 34% 34% 11% 11% 22

NRK0650 02-04 2265 552 2167 5% 5% 34% 34% 11% 11% 22

NRK0650 P1 1691 552 1991 8% 8% 31% 31% 11% 11% 22

NRK0650 P2 1733 552 2029 8% 8% 31% 31% 12% 12% 22

NRK0650 P3 1775 552 2066 8% 8% 31% 31% 12% 12% 22

NRK0650 P4 1817 552 2100 7% 7% 31% 31% 12% 12% 22

PALLET: 37KG (NRK0350 ÷ 0600)PALLET: 50KG (NRK0650 ÷ 0700)

WEIGHT EMPTY


VTGx Gy 1 2 3 4 5 6

WEIGHT OPERATING


VTGx Gy 1 2 3 4 5 6

26 INRKIY_14.02_5167555_00

NRK0200-0700 HA-HE

EN

NRK_0700[HA-HE]

NRKKIT

VTGx Gy 1 2 3 4 5 6

NRK_0700[HA-HE]

NRKKIT

VTGx Gy 1 2 3 4 5 6

Gy

Gx1 3

2 4

Top View

Gy

Gx1

2

3

4

5

6

Top View

NRK0700 00 1597 552 1928 8% 8% 31% 31% 11% 11% 22

NRK0700 01-03 1745 552 2005 7% 7% 32% 32% 12% 12% 22

NRK0700 02-04 1763 552 2021 6% 7% 32% 32% 12% 12% 22

NRK0700 P1 1649 552 1981 7% 8% 31% 31% 11% 12% 22

NRK0700 P2 1691 552 2021 7% 7% 31% 31% 12% 12% 22

NRK0700 P3 1733 552 2060 8% 8% 31% 30% 12% 12% 22

NRK0700 P4 1775 552 2096 8% 8% 31% 30% 12% 12% 22

NRK0700 00 1664 552 1936 8% 8% 31% 32% 10% 10% 22

NRK0700 01-03 2282 552 2156 5% 5% 34% 34% 11% 11% 22

NRK0700 02-04 2300 552 2167 5% 5% 34% 34% 11% 11% 22

NRK0700 P1 1726 552 1991 8% 8% 31% 31% 11% 11% 22

NRK0700 P2 1768 552 2029 8% 8% 31% 31% 12% 12% 22

NRK0700 P3 1810 552 2066 8% 8% 31% 31% 12% 12% 22

NRK0700 P4 1852 552 2100 7% 7% 31% 31% 12% 12% 22

PALLET: 37KG (NRK0350 ÷ 0600)PALLET: 50KG (NRK0650 ÷ 0700)

WEIGHT EMPTY


VTGx Gy 1 2 3 4 5 6

WEIGHT OPERATING


VTGx Gy 1 2 3 4 5 6

27INRKIY_14.02_5167555_00

NRK 0200-0700 HA-HE

EN

ON

OFF

Holes for passage of electric cables Master Switch ON/OFF

Restoring the protection degree of the electrical box by the installer

9. ELECTRIC CONNECTIONS

The units are completely wired at the factory and only requireconnectiontotheelectricalmains,downstreamfrom a unit switch, according to that envisioned by the Standards in force on this subject in the country of installation.

It Is also advised to check that:1. The electrical mains features are suitable for the

input values indicated in the electrical data table, also taking any other machines operating at the same time into consideration.

2. The unit must only be powered when installation hasbeencompleted(hydraulicandelectric).

3. Respect the connection indications of the phase and earth wires.

4. The power supply line must have a relevant protec-tion against short circuits mounted upstream and dispersions to earth, which isolate the system with respect to other utilities.

5. The voltage must be within a tolerance of ±10% of the nominal power supply voltage of the machine (forunbalancedthree-phaseunitmax3%betweenthephases).Whenevertheseparametersarenot respected, contact the electric energy public body.

6. For electric connections, use the cables with dou-ble isolation according to the Standards in force on this subject in the different countries.

THE FOLLOWING ARE MANDATORY

1. It is mandatory to make an effective earth connec-tion. The manufacturer is not liable for any damage caused by the lack of or ineffective appliance earth connection.

2. For units with three-phase power supply, check the correct connection of the phases.

3. It is mandatory to verify that the machine is water-tightbeforemakingtheelectricalconnectionsanditmustonlybepoweredafterthehydraulicandelectrical works have been completed.

AlltheelectricaloperationsmustbecarriedoutbySTAFF IN POSSESSION OF THE NECESSARY QUALIFICATIONS BY LAW, suitably trained and informed on the risks related totheseoperations.

The features of the electrical lines and of the related components must be determined by STAFF QUALIFIED TO DESIGN ELECTRICAL SYSTEMS, in compliance with theinternationalandnationalregulationsoftheplaceofinstallationoftheunitandincompliancewiththeregula-tionsinforceatthetimeofinstallation.

Fortheinstallationrequirementsreferonlytothewiringdiagram supplied with the appliance. THE WIRING DIAGRAM ALONG WITH THE MANUALS MUST BE KEPT IN GOOD CONDITION AND ALWAYS BE AVAILABLE FOR ANY FUTURE INTERVENTIONS ON THE UNIT.

ATTENTION

1. It is prohibited to use the water pipes to earth the appliance.

2. Check the tightening of all power wire clamps on commissioning and after 30 days from start-up. Successively check them every six months. Loose terminals can cause overheating of the cables and components.

ELECTRIC CONNECTIONS

1. Beforeconnectingtheunittothepowersupplymains,makesurethattheisolatingswitchisopen.

2. Open the front panel.3. Use the plates to pass the main electric power

supply cable and the cables of the other externalconnectionsundertheresponsibilityofthe installer.

4. Itisprohibitedtoaccesspositionsnotspecificallyenvisioned in this manual with electric cables.

5. Avoid direct contact with non-insulated copper piping and with the compressor.

6. Identifytheclampsfortheelectricconnectionand always refer exclusively to the wiring dia-gram supplied with the unit.

7. Forthefunctionalconnectionoftheunit,takethe power supply cable to the electric control board inside the unit and connect it to clamps. L1-L2-L3andPErespectingthepolarities.

L1-L2-L3 as phases, and PE as earth;

8. Re-positiontheinspectionpanels.9. Ensurethatallprotectionsremovedforthe

electricconnectionhavebeenrestoredbeforepowering the unit electrically.

10. Positionthesystemmasterswitch(outsidetheappliance)at“ON”.

ELECTRIC POWER CONNECTION TO THE ELECTRICAL MAINS

28 INRKIY_14.02_5167555_00

NRK0200-0700 HA-HE

EN

10. ELECTRIC DATA TABLE

L1 L2 L3

PHASE NEUTR AL

EARTH (PE)

Power Supply:

0150 0300 0330 0350 0550 0600 0650 0700Alim.(7) 460V±10% / 3 / 60Hz Electrical data 460V-3-60 Hz Whitout pumpLRA °° A 134 165 184 222 223 199 234 278MCA °° A 30 59 57 72 71 88 103 123MOP °° A 47 76 78 97 96 105 124 148Fuse recommended °° A 45 75 75 90 90 100 110 125

29INRKIY_14.02_5167555_00

NRK 0200-0700 HA-HE

EN

��

��

��

��

User Interface (PGD1)

The unit control panel allow the quick setti ng and display of the unit’s operati ng parameters. The board memorises all the default setti ngs and any modifi ca-ti ons. By installing the remote control panel PGD1 it is possible to remotely replicate all the functi ons and the setti ngs available on the unit. Aft er a power failure the unit is capable of an automati c restart, retaining the original setti ngs.

The user interface consists of a graphic display with six navigati on keys; the display is arranged through a menu hierarchy, acti vated by pressing the navigati on keys. The default display of these menus is the main screen. The navigati on between the various parame-ters is by using the arrow keys located to the right of the display. These keys are also used for the modifi ca-ti on of the selected parameter.

Key Fucntion

��

��

��

��

ALARM keyDisplays the list of active and historical alarms(redLEDon=activealarm)

��

��

��

��

MENU ACTIVATION key• Pressing this key activates the navigation between menus(orangeLEDon=winteroperatingmodeactive)

��

��

��

��EXIT MENU key• Pressing this key returns to the previous menu

��

��

��

��

NAVIGATION (+) key• Pressing this key when navigating between menu/parameters passes to the next menu/parameter• Pressing this key when modifying a parameter increases the value of the selected parameter

��

��

��

��

NAVIGATION (enter) key• Pressing this key when navigating between menus allows entry to the selected menu• Pressing this key when navigating between parameters allows selection of the parameter displayed to modify it• Pressing the key when modifying a parameter confirms the modification of the parameter value selected

��

��

��

��

NAVIGATION (-) key• Pressing this key when navigating between menu/parameters passes to the previous menu/parameter• Pressing this key when modifying a parameter decreases the value of the selected parameter

Control Keys

INTERFACE CONTROL KEYS

Control Keys

11. USER INTERFACE(PGD1)

30 INRKIY_14.02_5167555_00

NRK0200-0700 HA-HE

EN

Start-up procedure

Aft er having powered up the unit the control board will carry out preliminary operati ons before being ready for use. This initi al procedure takes around 60 seconds to complete. During the initi al loading procedure two screens are displayed: a start-up screen and a screen to

select the system language. These screens are detailed in the table below.

WARNING: The system language can be set on the screen displayed at the start-up or can be modifi ed at

any ti me through the appropriate screen contained in the Installer menu.

Display on the unit Index Display/Parameter

C

B

Wait please 6s A

Installer

ENTER for change

Language:

Time show mask:

English

ESC to confirm

20

ARemaining time for software loading: this value shows the remain-ing time to starting the software loaded on the unit, and passing the to system language selection

BSystem language: this parameter shows the current language set for the system. To change the language follow the instructions shown on the screen.

C

Remaining time to select the language: this value shows the remaining time to modify the language. When the time elapses the displaygoestothemainscreen(Mainscreen-Generalmonitoring).

WARNING: It is possible to modify the system language at any time using the appropriate screen contained in the Installer menu. (Menu password = 0000).

WARNING: It is possible to modify the system language at any time using the appropriate screen contained in the Installer menu. (Menu password = 0000).

12. START-UP PROCEDURE

31INRKIY_14.02_5167555_00

NRK 0200-0700 HA-HE

EN

�

A

B

C

D

E

F

I

H

G

Boththefunctionstocontroltheunitandtheoperatinginformationaredisplayedon theunitmounted control panel.All the functionsand informationarearranged inscreenswhich in turnaregroupedinto menus.

Duringthenormaloperationoftheunitthemainscreenisdisplayed,fromwhichitispossibletoaccesstheselectionoftheotheroperatingmenus.

Themenusaredisplayedthroughtherotationoftheiconsthattheyrepresent. Once the desired icon is selected the chosen menu is en-tered,permittingthedisplayormodificationoftheparametersthatitismadeupfrom.Theprocedurefornavigatingthemenus,orchang-ingparameters,isexplainedindetailinthechapter“Useroperatingprocedures”.

Theadjacentdrawingshowstherelationbetweenthevariousmenusandthenavigationkeysused.

WARNING: Improper selecti on of the parameters in the Installer menu may cause malfuncti ons of the unit. It is recommended that these parameters are only modifi ed by personnel qualifi ed in the installati on and confi gurati on of the unit.

Menu structure and navigati on

Index Icon Menu Menu function

A --- MAIN Thescreensinthismenudisplaythecurrentconditionsoftheunit(unitstatus,setpoints,circuitdata,etc.)

B

IN/OUT This menu contains advanced information on the unit operation

C ON/OFF This menu permits the unit to be enabled or disabled, and provides information on the status

D SYSTEM This menu permits the selection of the operating modes, the water setpoints and the time-clock for the system

E RECOVERY If the unit includes heat recovery, this menu permits the setting of the parameters associated with the heat recovery

F INSTALLER Thismenucontainsthesettingsusefulfortheinstaller(enablingdigitalinputs,BMSconfiguration,control,pumps,etc.)WARNING: This menu is password protected. The password is: 0000

G ASSISTANCE This menu is only accessible to qualified personnel

H FACTORY This menu is only accessible to qualified personnel

I CLOCK Thismenucontainstheclocksettingsforthesystemcontrol(date,hour,calender)

The operati ng menus are arranged as in the following drawing:

13. MENÙ STRUCTURE AND NAVIGATION

32 INRKIY_14.02_5167555_00

NRK0200-0700 HA-HE

EN

1 2

Tocheckormodifytheoperatingparametersoftheunititisnecessarytousetheinterfaceofthecontrolpanelontheunit.Thebasicoperationsthattheusermustbecapable of, for the correct use of the unit, are:(1)Movingfromonemenutothenext.(2)Selectingandmodifyingaparameter.

User operating procedures

Moving between menus

(a)Tomovebetweenthemenus,theorderinwhichtheyaredis-played is shown in the previous page, enter the menu selection

modebypressingthekey( ��

).

(b) Once in themenu selectionmode it is possible tomovebetweenmenususingthearrowkeys:thekey(

��

��

)tomovetothepreviousmenu,andthekey(

��

�� )tomovetothenextmenu.

(c)Whenthedesiredmenuisseenpressthekey(��

)toenterthemenu.Pressthekey(

��

�� )toreturntothemenuselectionmode.

Selecting and modifying a menu

(a)Onceinthemenuselected,byfollowingtheprocedure( 1 ),itis possible to move between the screens using the arrow keys: the key (

��

��

) tomove to thepreviousparameter,and thekey (

��

�� ) tomove to the next parameter.

(c)Whenthedesiredparameterisseenpressthekey(��

)toenterthe parameter. To exit the parameter and return to the parameter selectionmodepressthekey(

��

�� ).WARNING:Onceaparameterisselectedbypressingthekey(��

��

),the parameter selection mode is automatically accessed and in this mode the desired parameter values can be set with the following procedure:(1)Pressingthekey(��

��

)causesaflashingcursortoappearonthefirst modifiable field of the parameter. If no modifiable fields are displayed then the cursor will not appear. (2)Pressingthekey(

��

��

)orthekey(

��

�� ),thevalueofthefieldcanbe increased or decreased.(3) Pressing the key (��

��

) confirms themodificationof the fieldvalue, saving it in memory. On the basis of the type of parameter selected the number of modifiable fields can change.

previous menu

nextmenu

exiting a menu

entering a menu

previous para-meter

next parameter

exiting a parameter

entering a para-meter

14. USER OPERATING PROEDURES

33INRKIY_14.02_5167555_00

NRK 0200-0700 HA-HE

EN

CONTROL AND COMMISSIONING

PREPARATION FOR COMMISSIONING

Please note that, on request by the Aermec customer or thelegitimateownerofthemachine,theunitsinthisse-riescanbestartedupbytheAERMECAfter-SalesServiceinyourarea(validonlyonItalianterritory).The start of operationmust be scheduled in advancebasedontheframeregardingtherealisationofthesys-tem.Priortotheintervention,allotherworks(electricalandhydraulicconnections,primingandbleedingofairfromthesystem)musthavebeencompleted.

START - UP

PRELIMINARY OPERATIONS TO BE PERFOR-MED WITH NO VOLTAGE PRESENT

Control:1. Allsafetyconditionshavebeenrespected.2. Theunitiscorrectlyfixedtothesupport

surface.3. The minimum technical spaces have been

respected.4. That the main power supply cables have

appropriatecross-section,whichcansupportthetotalabsorptionoftheunit(see electric data sections) and that the unit has been duly connected to earth.

5. Thatalltheelectricalconnectionshavebeenmade correctly and all the clamps adequately tightened.

THE FOLLOWING OPERATIONS ARE TO BE CAR-RIED OUT WHEN THE UNIT IS LIVE.

1. Supply power to the unit by turning the master switchtotheONposition;see(fig1.)Thedisplaywill switch on a few seconds after voltage has been supplied; check that the operating status isonOFF(OFFBYKEYBonlowersideofthedisplay).

2. Check with a tester that the value of the supply voltage to the phases: three-phase is within the present limits: ±10%, and that the unbalance betweenthephasesisnotmorethan3%(onlyforthree-phasemodels)

3. Check that the connections made by the installer are in compliance with the documentation.

4. Verify that the compressor sump resistance/s is/are operating by measuring the increase in temperature of the oil pan. The resistance/s must function for at least 12 hours before start-up of the compressor and in any event, the tempera-tureoftheoilpanmustbe10-15°Chigherthanroom temperature.

HYDRAULIC CIRCUIT

1. Check that all hydraulic connections are made correctly, that the plate indications are complied with and that a mechanical filter has been installed at the evaporator inlet (mandatory component for warranty to be valid).

2. Make sure that the circulation pump/s is/are operating and that the water flow rate is sufficient to close the flow switch contact.

3. Check the water flow rate, measuring the pressure difference between evaporator inlet and outlet and calculate the flow rate using the evaporator pressure drop diagram present in the technical manual (available on the software selection and on the website www.aermec.com

• Flow switch: on closing the cut-off valve at the heat exchanger outlet, the unit must display the block. Finally, open the valve and rearm the block.

MACHINE COMMISSIONINGTheunitcanbeusedafteralloftheabove-mentionedcontrols have been performed.- Close the electric control board hatch.

-PositiontheappliancemasterswitchatON- Starting the unit

WITH THE MACHINE ON, CHECK

COOLING CIRCUIT CHECK:- That the compressor input current is lower than the

maximum indicated in the technical data table.- That in models with three-phase power supply, the

compressor noise level is not abnormal. If this is the case, invert a phase.

- That the voltage value lies within the pre-fixed limits andthatunbalancebetweenthethreephases(three-phasepowersupply)isnotabove3%.

- ThepresenceofanyrefrigerantGASleaks,particu-larly in correspondence with the manometers pres-sure transducers and pressure switches pressure points (vibrations during transportationmay haveloosenedthefittings).

- Overheating Comparing the temperature read using a contact

thermostat positioned on the compressor intake with the temperature shown on the low pressure manom-eter(saturationtemperature corresponding tothe evaporation pressure). The difference betweenthese two temperatures gives the o v e r -heatingvalue.Optimalvaluesarebetween4and8°C.

- Pressing line temperature. If the subcooling and overheating values are regular, the temperature measured in the pressing line pipe at the outlet of thecompressormustbe30/40°Cabovetheconden-sation temperature.

Operating features (Factory set)

7°C/∆t=5°CCooling Only

Heat Pump in Cooling Mode

45°C/∆t=5°C HeatPumpinHeatingMode

Iftheunitpowersupplyisrestoredafteratempo-raryinterruption,themodesetwillbekeptinthememory.

Compressor Start-Up Delay

Twofunctionshavebeenset-uptopreventcom-pressor start-ups that are too close.

Minimum time from last switch-off

____seconds in Cooling Mode

Minimum time from last switch-on

____seconds inHeatingmode

ON ON

OFFOFF

SELECT MENÙ ON/OFF

60

300

ATTENTION1)Commissioning must be performed with standard settings. Only when the inspection has been completed can the functio-ning Set Point values by changed. Before start-up, power the unit for at least 12-24 hours, posi-tioning the protection magnet circuit breaker switch and the door lock isolating switch at ON. Make sure that the control panel is off in order to allow the compressor oil sump to heat.

2) Werecommendtoenvisionamachinebook(notsupplied, but the user’s responsibility), which allows to keeptrack of the interventions performed on the unit.In this way it will be easy to suitably organise the interventions making research and the prevention of anymachine breakdowns easier. Use the date to record date, typeofinterventionmade(routinemaintenance,inspectionorrepai-rs),descriptionoftheintervention,measures actuated.

3)It is forbidden to LOAD the cooling circuit with a refrigerant different to that indicated. Using a different refrigerant gas can cause serious damage to the unit.

34 INRKIY_14.02_5167555_00

NRK0200-0700 HA-HE

EN

ROUTINE MAINTENANCE

All cleaning is prohibited until the unit has been discon-nected from the electric power supply mains 1.Make sure there is no voltage present before operating.Periodic maintenance is fundamental to keep the unit perfectly efficient under an operational and energy point of view.

It is therefore essential to carry out periodic yearly con-trols on the:

HYDRAULIC CIRCUITCHECK:1. Water circuit filling.2. Water filter cleaning. 3. Pressure switch or flow switch control. 4. Theabsenceofairinthecircuit(bleeding).5. That the water flow rate to the evaporator is con-

stant.6. The thermal insulation of the hydraulic piping.7. The percentage of glycol, when envisioned.

ELECTRIC CIRCUITCHECK:8. Safety device efficiency.9. The electric power supply voltage. 10. Electrical absorption.11. Connections tightness.12. The operation of the compressor guard resistance.

COOLING CIRCUITCHECK:13. State of compressor.14. Plate exchanger resistance efficiency. 15. Work pressure.16. Leak test for water tightness control of the cooling

circuit.17. Operation of high and low pressure switches. 18. Carry out the appropriate checks on the filter dry-

er to check efficiency.

MECHANICAL CHECKSCHECK:1. The tightening of the screws, the compressors

and the electrical box, as well as the exterior pan-elling of the unit. Bad fixing can cause abnormal noises and vibrations.

2. The state of the structure. 3. If there are any oxidised parts, treat with paint

suitable to eliminate or reduce oxidation.

EXTRAORDINARY MAINTENANCE

The units are filled with ........... gas and are inspected at the factory. Under normal conditions they do not require Technical Assistance related to control of refrigerant gas. Through time gas leakage may be generated, causing refrigerant to escape and discharge the circuit, causing appliance malfunctioning. In these cases the refrigerant leakage points must be detected, repaired and the refrig-erantloadistobereplenished,respectingLawn°549lawdated 28 December 1993.

DISPOSAL

Envisions that disposal of the unit is carried out in con-formity with the Standards in force in the different coun-tries

15. ROUTINE MAINTENANCE

16. EXTRAORDINARY MAINTENANCE

R410A

35INRKIY_14.02_5167555_00

NRK 0200-0700 HA-HE

EN

17. TROUBLE SHOOTING

IRREGULARITY CAUSE SOLUTION

The unit does not start

• No electrical voltage • Check for voltage• Check the safety systems upstream of the appliance• Master switch on OFF• RemoteswitchonOFF(ifpresent)• Control panel on OFF• Main switch on OFF• Compressor thermomagnetic switch on OFF

• Set to ON

• The flow switch is not connected on the terminal board therefore the circuit is open

• Install and wire the flow switch• NB. DO NOT bridge the contacts on the terminal

board(otherwisetheunitwillnotstopintheeventof insufficient water and the exchanger would be to throwaway!)

• Power supply voltage too low • Check power supply line• Coil of the compressor remote control switch is

broken• Electronic circuit board faulty• Peak condenser faulty• Compressor faulty

• Replace the component

Poor yield

• No refrigerant• Dirty coils• Water filter clogged• Appliance dimensioning• Operating outside the operating limits

• Check the load and any leaks• Clean the coils• Clean the filter• Check performance• Check the operating limits using the graphics

Compressor noisy• Liquid return to the compressor• Inadequate fixing • Check

• Inverted phase • Invert a phase

Noises and vibrations• Contact between metallic bodies • Check• Weak support • Strengthen• Loose screws • Tighten the screws

The compressor stops due to the intervention of the protections

• Excessive flow pressure• Low intake pressure• Low power supply voltage• Electrical connections tightened badly• Operation outside operating limits

• Check the operating limits using the graphics

• Pressure switch malfunctioning • Replace the component

• Circuit breaker protection intervention • Check the power supply voltage and calibrations• Check the electrical isolation of the windings• Flow switch intervention • Check water flow rate

Compressor high discharge pressure

• High external air temperature• High utility inlet water temperature • Check the operating limits using the graphics

• Insufficient air flow• Insufficient water flow

• Control: 1. operation of the fans2. Cleanliness of the coil3. Operationofthepump(speed)4. Cleanliness of the filter

• Anomalous operation adjusting the fans • Check or replace if broken• Air in the hydraulic system • Vent the circuit• Too much refrigerant gas charged • Restore the correct charge

Low discharge pressure

• Low outside air temperature• Low water inlet temperature

• Check the operating limits using the graphics, as above

• Moisture in the refrigerant circuit • Empty and restore the gas charge• Air in the hydraulic system • Bleed the circuit• Insufficient gas load • Restore the correct load

High intake pressure• High external air temperature• High utility inlet water temperature• Thermostatic expansion valve too open or damaged

• Check the operating limits using the graphics• Adjust or replace if damaged

Low intake pressure

• Utilities low inlet water temperature• Low outside air temperature• Thermostatic expansion valve damaged or blocked

• Check the operating limits using the graphics• Adjust or replace if damaged

• Insufficient water flow• Insufficient air flow

• Control: 1. operation of the fans2. Cleanliness of the coil3. Pumpoperation(speed)4. Filter cleanliness

carta riciclatarecycled paperpapier recyclérecycled Papier

AERMEC S.p.A.37040Bevilacqua(VR)Italia–ViaRoma,996Tel.(+39)0442633111Telefax044293730–(+39)044293566www.aermec.com -

Aermec reserves the right to make all modification deemed necessary for improving the product at any time with any modification of technical data.

[email protected]

Documents

Installati on Manual NRK - Aermecaermec.us/products/airtowater/NRK/Installation Manual.pdf · 2019. 9. 25. · INRKIY_14.02_5167555_00 7 NRK 0200-0700 HA-HE EN RECEIPT AND HANDLING