AERMEC NRK 0150 User manual

• Reversible Heat Pumps
• Air-Water
• Outdoor Installation
• Axial Fans
• Scroll Compressor
• High Efficiency

EN
NRK
0150÷0700
INRKIY_15.11_5167555_01

Dear Customer,
Thank you for choosing an AERMEC product. This product is the result of many years of experience and
in-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 and
without forewarning.
Thank you again.
AERMEC S.p.A

1. General warnings .............................................................................. 6
2. Receipt and handling ........................................................................ 7
  ........ 8
  ................................................... 13
5. Main hydraulic circuits .................................................................... 19
6. System loading................................................................................ 24
7. System emptyng.............................................................................. 24
8. System draining............................................................................... 24
 ..................... 25
  ........................................................................ 29
11. Electric data table ........................................................................... 30
12. Relectronic control.......................................................................... 31
 ...................................................................... 32
 GD1...................................................................... 33
15. Start-up procedure.......................................................................... 34
 ....................................................... 35
 ............................................................... 36
18. Control and commissioning ............................................................ 37
 ..................................................................... 38
20. Extraordinary maintenance ............................................................ 38
  ............................................................................. 39
22. Distributor....................................................................................... 40
Index

6INRKIY_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.

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

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.
 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.

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

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.

• 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

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
ATTENTION
Lifting rods NOT supplied.
ATTENTION:
Diameter of holes Ø ____
ATTENTION
The unit comes fixed on a pallet.
Use forklis for handling
40
800
800
800
1100
3000
800
800
800
1100
3000
800
800
800
1100
3000
NRK_0300 NRK_0330_0550 NRK_0600_0700

8INRKIY_14.02_5167555_00
NRK0200-0700 HA-HE
EN
NRK_0300 [HA]
640 6001960
Ø 40 Ø 40
1640
3200
3200
1100
80
DIMENSIONI (mm) PUNTI DI SOLLEVAMENTO (mm)
POSIZIONE ANTIVIBRANTI (mm)
Modello
Vista Soo
[Tue]

9INRKIY_14.02_5167555_00
NRK 0200-0700 HA-HE
EN
NRK_0330÷0550[HA-HE]
1875
3330
3330
1100
735 2020 575 80
Ø 40 Ø 40
DIMENSIONS (mm) PUNTI DI SOLLEVAMENTO (mm)
ANTIVIBRANT POSITION MOUNTS (mm)
Model
Boom View
LIFTING POINTS (mm)
[All]

10 INRKIY_14.02_5167555_00
NRK0200-0700 HA-HE
EN
NRK_0650÷0700[HA-HE]
1875
4330
4330
1100
720 2945 665
Ø 40 Ø 40
80
DIMENSIONS (mm) PUNTI DI SOLLEVAMENTO (mm)
ANTIVIBRANT POSITION MOUNTS (mm)
Model
Boom 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
4330
1100
720 2945 665
Ø 40 Ø 40
80
DIMENSIONS (mm) PUNTI DI SOLLEVAMENTO (mm)
ANTIVIBRANT POSITION MOUNTS (mm)
Model
Boom 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

INTERNAL HYDRAULIC CIRCUIT



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
    

in order to limit:
• The hourly number of inversions be-
tween operating modes.
• Drop in water temperature during win-
ter defrost cycles.
WATER FEATURES
PH 6-8
Electric conductivity 
Chloride ions Less than 50 ppm
Sulphuric acid ions Less than 50 ppm
Total iron Less than 0.3 ppm
 Less than 50 ppm
Total hardness Less than 50 ppm
Sulphur ions none
Ammonia ions None
Silicone ions Less than 30 ppm
NRK 0300 ÷ 0700[00]
1
3
6
7
5
5
6
12
7
7
2
13
13
13
4
10
11
8
4
9
14
15
NRK 0200 ÷ 0700_HA_HE[00]
COMPONENTS SUPPLIED AS PER STANDARD
1 - Plate exchanger
2 - Water filter
3 - Fow switch
4 - Air vent valve
5 - Water temperature probes (IN)
13 - Drain valve
RECOMMENDED COMPONENTS NOT SUPPLIED FOR WHICH INSTALLER IS RESPONSIBLE
4 - Air vent valve
6 - An-vibraon joints
7 - Cut-off valve
8 - Safety valve
9 - Expansion Tank
10 - System buffer tank (installaon recommended whenever the system water content is less than that
indicated in tab.)
11 - Anfreeze electric heater
12 - Pump
13 - Drain valve
14 - Gauge
15 - Automac fill point
4. 
NRK
0150
NRK
0200
NRK
0300
NRK
0330
NRK
0350
NRK
0500
NRK
0550
NRK
0600
NRK
0650
NRK
0700
 2/2 2/2 2/2 2/2 2/2 2/2 2/2 4/2 4/2 4/2
l/kW7777777777
l/kW 14 14 14 14 14 14 14 14 14 14

Compressors / Circuits
Minimum recomended water content
Minimum recomended water content *

Control on water inlet temperature.


18 INRKIY_14.02_5167555_00
NRK0200-0700 HA-HE
EN

INTERNAL HYDRAULIC CIRCUIT



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
    

in order to limit:
• The hourly number of inversions be-
tween operating modes.
• Drop in water temperature during win-
ter defrost cycles.
WATER FEATURES
PH 6-8
Electric conductivity 
Chloride ions Less than 50 ppm
Sulphuric acid ions Less than 50 ppm
Total iron Less than 0.3 ppm
 Less than 50 ppm
Total hardness Less than 50 ppm
Sulphur ions none
Ammonia ions None
Silicone ions Less than 30 ppm
NRK_0300÷0700[P1-P3]
1
5
6
7
3
5
6
12
7
7
13
13
4
9
10
11
8
4
9
14
15
NRK 0200 ÷ 0700_HA_HE[P1_P3]
2
COMPONENTS SUPPLIED AS PER STANDARD
1 - Plate exchanger
2 - Water filter
3 - Fow switch
4 - Air vent valve
5 - Water temperature probes (IN/OUT)
9 - Expansion Tank
12 - Pump
13 - Drain valve
RECOMMENDED COMPONENTS NOT SUPPLIED FOR WHICH INSTALLER IS RESPONSIBLE
4 - Air vent valve
6 - An-vibraon joints
7 - Cut-off valve
8 - Safety valve
9 - Expansion Tank
10 - System buffer tank (installaon recommended whenever the system water content is less than that
indicated in tab.)
11 - Anfreeze electric heater
13 - Drain valve
14 - Gauge
15 - Automac fill point
NRK
0150
NRK
0200
NRK
0300
NRK
0330
NRK
0350
NRK
0500
NRK
0550
NRK
0600
NRK
0650
NRK
0700
 2/2 2/2 2/2 2/2 2/2 2/2 2/2 4/2 4/2 4/2
l/kW7777777777
l/kW 14 14 14 14 14 14 14 14 14 14

Compressors / Circuits
Minimum recomended water content
Minimum recomended water content *

Control on water inlet temperature.


19INRKIY_14.02_5167555_00
NRK 0200-0700 HA-HE
EN

INTERNAL HYDRAULIC CIRCUIT



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
    

in order to limit:
• The hourly number of inversions be-
tween operating modes.
• Drop in water temperature during win-
ter defrost cycles.
WATER FEATURES
PH 6-8
Electric conductivity 
Chloride ions Less than 50 ppm
Sulphuric acid ions Less than 50 ppm
Total iron Less than 0.3 ppm
 Less than 50 ppm
Total hardness Less than 50 ppm
Sulphur ions none
Ammonia ions None
Silicone ions Less than 30 ppm
NRK_0300÷0700[P2-P4]
NRK 0200 ÷ 0700_HA_HE[P2_P4]
1
5
6
7
3
5
6
7
7
13
13
4
9
10
11
8
4
9
14
15
2
12
12
17
17
COMPONENTS SUPPLIED AS PER STANDARD
1 - Plate exchanger
2 - Water filter
3 - Fow switch
4 - Air vent valve
5 - Water temperature probes (IN/OUT)
9 - Expansion Tank
12 - Pump
13 - Drain valve
17- One way valve
RECOMMENDED COMPONENTS NOT SUPPLIED FOR WHICH INSTALLER IS RESPONSIBLE
4 - Air vent valve
6 - An-vibraon joints
7 - Cut-off valve
8 - Safety valve
9 - Expansion Tank
10 - System buffer tank (installaon recommended whenever the system water content is less than that
indicated in tab.)
11 - Anfreeze electric heater
13 - Drain valve
14 - Gauge
15 - Automac fill point
NRK
0150
NRK
0200
NRK
0300
NRK
0330
NRK
0350
NRK
0500
NRK
0550
NRK
0600
NRK
0650
NRK
0700
 2/2 2/2 2/2 2/2 2/2 2/2 2/2 4/2 4/2 4/2
l/kW7777777777
l/kW 14 14 14 14 14 14 14 14 14 14

Compressors / Circuits
Minimum recomended water content
Minimum recomended water content *

Control on water inlet temperature.


20 INRKIY_14.02_5167555_00
NRK0200-0700 HA-HE
EN

INTERNAL HYDRAULIC CIRCUIT



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
    

in order to limit:
• The hourly number of inversions be-
tween operating modes.
• Drop in water temperature during win-
ter defrost cycles.
WATER FEATURES
PH 6-8
Electric conductivity 
Chloride ions Less than 50 ppm
Sulphuric acid ions Less than 50 ppm
Total iron Less than 0.3 ppm
 Less than 50 ppm
Total hardness Less than 50 ppm
Sulphur ions none
Ammonia ions None
Silicone ions Less than 30 ppm
NRK 0200 ÷ 0700_HA_HE[01_03_05_07]
1
5
3
5
12
7
13
4
6
7
6
7
14
10
11
8
4
9
15
2
COMPONENTS SUPPLIED AS PER STANDARD
1 - Plate exchanger
2 - Water filter
3 - Fow switch
4 - Air vent valve
5 - Water temperature probes (IN/OUT)
7 - Cut-off valve
8 - Safety valve
9 - Expansion Tank
10 - System buffer tank (installaon recommended whenever the system water content is less than that
indicated in tab.)
11 - Anfreeze electric heater
12 - Pump
13 - Drain valve
RECOMMENDED COMPONENTS NOT SUPPLIED FOR WHICH INSTALLER IS RESPONSIBLE
6 - An-vibraon joints
7 - Cut-off valve
14 - Gauge
15 - Automac fill point
NRK_0300÷0700[01-03]
NRK
0200
NRK
0280
NRK
0300
NRK
0330
NRK
0350
NRK
0300
NRK
0500
NRK
0550
NRK
0600
NRK
0650
NRK
0700
 2/2 2/2 2/2 2/2 2/2 2/2 3/2 4/2 4/2 4/2 4/2
l/kW77777777777
l/kW 14 14 14 14 14 14 14 14 14 14 14

Compressors / Circuits
Minimum recomended water content
Minimum recomended water content *

Control on water inlet temperature.
