AERMEC NLC H User manual


IT
EN
FR DE ES

Air/Water


0280/1250
15.07 4037315_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.
We constantly monitor the quality level, and as a result AERMEC products are synonymous
with Safety, Quality, and Reliability.
Aermec reserves the right to make all modification deemed necessary for improving the
product at any time with any modification of technical data.
Thank you again.
AERMEC S.p.A

Indice
1. General warnings for the installer............................................................................................................ 5
2. Selection and place of installation ........................................................................................................... 6
3. Positioning................................................................................................................................................ 6
4. Minimum technical clearances................................................................................................................. 6
5. Operation of the nlc unit.......................................................................................................................... 6
6. Max static useful pressure of the fans..................................................................................................... 7
7. Main hydraulic circuits ............................................................................................................................. 9
8. Electrical wirings .................................................................................................................................... 12
9. Electrical data table................................................................................................................................ 14
10. Electronic legislation (pCO5).................................................................................................................. 15
11. Loading the system................................................................................................................................. 21
12. System discharge.................................................................................................................................... 21
13. Draining the machine............................................................................................................................. 21
14. Control and first start-up........................................................................................................................ 22
15. Calibration of control and safety parameters......................................................................................... 23
16. Routine maintenance ................................................................................................................................. 24
17. Extraordinary maintenance.................................................................................................................... 24
18. Troubleshooting ..................................................................................................................................... 25
19. Lifting points and antivibrant position ................................................................................................... 26
20. Weight distribution and percentage on the supports (empty weight)................................................... 31
21. Information regarding dimensions and hydraulic connections .............................................................. 35
22. Distributors............................................................................................................................................. 58

EN - 5
NLC
NLC_HA/HE cod: 4037315_01
 
The NLC AERMEC units are constructed according to the recognised
technical standards and safety regulations. They have been designed for air
conditioning and domestic hot water production (DHW) and must be used
for this purpose in accordance with their technical features. The company
shall not be contractually or non-contractually liable for any damage to
people, animals or objects, for failures caused by errors during installation,
adjustment and maintenance or incorrect use. All the uses not expressly
indicated in this manual are not allowed.

Deliver the following instructions plus all the complementary documentation
to the system user, who shall be responsible for keeping the instructions so
that they are always available when needed.
Read carefully this chapter; all the procedures must be carried out by
qualified personnel according to the regulations in force in the various
countries.
The warranty of the device does not in any case cover costs incurred as a
result of motorised ladders, scaffolding or any other lifting systems made
necessary to carry out the operations under warranty.
Do not modify or tamper with the appliance as dangerous situations may
be created and the manufacturer will not be liable for any damage caused.
The warranty shall not be valid if the indications mentioned above are not
observed.

The appliance must be installed by an authorised and qualified technician,
in compliance with the national legislation in force in the country of
destination.
Aermec shall not be held responsible for any damage whatsoever resulting
from the non-compliance with these instructions.
Before starting any kind of work, it is necessary TO READ CAREFULLY THE
INSTRUCTIONS, AND TO PERFORM THE SAFETY CHECKS TO REDUCE ALL
HAZARDS TO A MINIMUM. All the personnel in charge must be aware of
the operations and the risks that may arise when all the unit installation
operations begin.

The warranty of the device does not cover costs incurred as a result of
ladders, scaffolding or any other lifting systems made necessary to carry out
operations under warranty.
Do not modify or tamper with the chiller as this may cause dangerous
situations and the manufacturer will not be liable for any damage caused.
The warranty shall not be valid if the indications mentioned above are not
observed.

The unit must be installed by an authorised and qualified technician, in
compliance with the national legislation in force in the country of destination
(MD 329/2004). AERMEC shall not be held responsible for any damage
whatsoever resulting from the non-compliance with these instructions.
Before starting any work, it is necessary TO READ CAREFULLY THE
INSTRUCTIONS, AND TO PERFORM THE SAFETY CHECKS TO AVOID ANY
RISKS.
All the personnel in charge must be aware of the operations and the risks
that may arise when all the unit installation operations begin.

The units can be identified using:

- that includes the product identification data





IP20

This unit contains fluorinated greenhouse gases covered by the Kyoto
Protocol. Maintenance and disposal operations must be only carried out by
qualified personnel in compliance with the standards in force.
WARNING
The refrigerant circuit is pressurised. Work on the appliance can be carried
out only by an authorised ATS technician or by a qualified technician.

The chiller is delivered with the necessary amount of R410A refrigerant
for its operation. It is a chlorine-free refrigerant that does not damage
the ozone layer. R410A is not flammable. However, all the maintenance
operations must only be carried out by a specialised technician with the
suitable protection equipment

Before opening the chiller, the unit must be completely disconnected from
the mains power supply.

6 - EN
NLC
EN
NLC_HA/HE cod: 4037315_01
 
Before installing the unit, decide with the customer where it will be placed,
while paying attention to the following points:
• the support surface must be able to withstand the weight of the unit;
• the safety distance between the units and other equipment or
structures must be strictly respected so that the air in fans inlet and
outlet circulates freely.
• The unit must be installed by an authorised technician in compliance
with the national laws in the country of destination, respecting the
minimum technical spaces to allow maintenance.
 
Before handling the unit, check the lifting capacity of the machines used,
respecting the instructions on the packaging.
To handle the machine on horizontal surfaces, use a fork-lift or the like in
the most appropriate way, paying attention to the distribution of the weight
of the unit.
ATTENTION
The unit comes fixed on a pallet.
Use forklis for handling
Position the unit in the place indicated by the customer, placing, between
the base and the support, a rubber mattress (minimum 10 mm. thick) or
anti-vibration dampers (ACCESSORIES).
For more information, see the tables regarding dimensions
Fasten the unit by checking carefully that its on the same level; check that
easy access to the hydraulic and electric part is allowed.
 
500 mm
800 mm
800 mm
1000 mm
 
The chillers and the heat pumps of the NLC range are air-cooled machines
suitable for installing indoors. For this reason the air that crosses the coil
needs to be expelled from the utility room using suitable piping connected
to the machine itself.
The presence of the piping involves pressure drops that will need to be
overcome by the fan; the size of these losses depends on various factors like
the length of the pipe, the dimensions, complexity of the pipes, etc.
            
          
           


             



The number of revs is set indirectly through a parame-
ter expressed in volts, which can vary from 0 to 10V:
Volt




0 10
 


B
B
A
A

EN - 7
NLC
NLC_HA/HE cod: 4037315_01
Default
NLC-HA Total air
ow rate
ESP [Pa] Max ESP
[Pa]
0 50 100 120 150 200 250 300 350 400 450 500
Parameter fans max Volts [V]
0280 23000 7,3 7,5 7,8 7,9 8,1 8,3 8,6 8,8 9,1 9,4 9,6 9,9 520
0300 26500 8,2 8,5 8,7 8,8 8,9 9,2 9,4 9,7 9,9 10,1 - - 370
0330 25000 7,9 8,2 8,4 8,5 8,6 8,9 9,1 9,4 9,6 9,9 - - 420
0350 27500 8,5 8,8 9,0 9,1 9,3 9,5 9,8 10,0 - - - - 300
0550 42000 7,0 7,3 7,6 7,7 7,9 8,2 8,5 8,8 9,1 9,4 9,6 9,9 510
0600 47000 7,8 8,1 8,3 8,4 8,6 8,9 9,1 9,4 9,7 9,9 - - 410
0650 44000 7,4 7,7 8,0 8,1 8,3 8,6 8,8 9,1 9,4 9,7 9,9 - 460
0675 50000 8,2 8,5 8,7 8,8 9,0 9,3 9,6 9,8 - - - - 330
0700 53000 7,9 8,2 8,5 8,6 8,8 9,1 9,4 9,7 10,0 - - - 350
0750 64500 8,5 / 7,0 8,8 / 7,3 9 / 7,6 9,1 / 7,7 9,3 / 7,9 9,5 / 8,2 9,8 / 8,5 10 / 8,8 - - - - 300
0800 84000 7,0 7,3 7,6 7,7 7,9 8,2 8,5 8,8 9,1 9,4 9,6 9,9 510
0900 94000 7,8 8,1 8,3 8,4 8,6 8,9 9,1 9,4 9,7 9,9 - - 410
1000 88400 7,4 7,7 8,0 8,1 8,3 8,6 8,8 9,1 9,4 9,7 9,9 - 460
1100 102000 8,1 8,4 8,7 8,8 9,0 9,4 9,7 10,0 - - - - 300
1250 102000 8,1 8,4 8,7 8,8 9,0 9,4 9,7 10,0 - - - - 300
Default
NLC-HE
Total
air ow
rate
ESP [Pa] Max ESP
[Pa]
0 50 100 120 150 200 250 300 350 400 450 500 550 600
Parameter fans max Volts [V]
0280 17000 6,1 6,4 6,8 6,9 7,1 7,4 7,7 8,1 8,4 8,7 9,0 9,4 9,7 10,0 600
0300 19800 6,9 7,2 7,5 7,6 7,8 8,1 8,3 8,6 8,9 9,2 9,5 9,8 - - 540
0330 17200 6,3 6,6 6,9 7,0 7,2 7,5 7,8 8,1 8,4 8,8 9,1 9,4 9,7 10,0 600
0350 20600 7,3 7,5 7,8 7,9 8,1 8,3 8,6 8,9 9,1 9,4 9,7 9,9 - - 510
0550 30000 5,6 6,0 6,4 6,5 6,7 7,1 7,4 7,8 8,2 8,5 8,9 9,3 9,6 10,0 600
0600 35000 6,3 6,6 7,0 7,1 7,3 7,7 8,0 8,3 8,7 9,0 9,4 9,7 - - 540
0650 31400 5,8 6,2 6,6 6,7 6,9 7,3 7,6 8,0 8,4 8,7 9,1 9,4 9,8 - 580
0675 38200 6,8 7,1 7,5 7,6 7,8 8,1 8,4 8,8 9,1 9,4 9,7 - - - 490
0700 41000 7,3 7,5 7,8 7,9 8,1 8,3 8,6 8,9 9,1 9,4 9,7 9,9 - - 510
0750 48900 7,3 / 5,6 7,5 / 6 7,8 / 6,4 7,9 / 6,5 8,1 / 6,7 8,3 / 7,1 8,6 / 7,4 8,9 / 7,8 9,1 / 8,2 9,4 / 8,5 9,7 / 8,9 9,9 / 9,3 - - 510
0800 60000 5,6 6,0 6,4 6,5 6,7 7,1 7,4 7,8 8,2 8,5 8,9 9,3 9,6 10,0 600
0900 70800 6,3 6,6 7,0 7,1 7,3 7,7 8,0 8,3 8,7 9,0 9,4 9,7 - - 540
1000 64000 5,8 6,2 6,6 6,7 6,9 7,3 7,6 8,0 8,4 8,7 9,1 9,4 9,8 - 580
1100 77600 6,8 7,1 7,5 7,6 7,8 8,1 8,5 8,8 9,1 9,5 9,8 - - - 480
1250 88000 6,5 7,0 7,4 7,6 7,9 8,3 8,8 9,3 9,7 - - - - - 380
 
THESE TABLES LOOK INCORRECT FOR AIRFLOW AND STATIC PRESSURE.
PLEASE HAVE THIS CHANGED FOR NORTH AMERICA

8 - EN
NLC
EN
NLC_HA/HE cod: 4037315_01
B
B
A
A

EN - 9
NLC
NLC_HA/HE cod: 4037315_01
WARNING
The selection and installation of the components
outside the appliance is assigned, due to his
competence, to the installer who will have to
operate according to the rules of good practice
and in compliance with the regulations in force in
the country of destination.
The hydraulic piping for connection to the
appliance must be properly scaled for the actual
water flow rate required by the system when
operating. The water flow rate to the heat
exchanger must always be constant.
Clean the system carefully before connecting the
unit. This is done in order to eliminate possible
residues such as welding spatter, waste, rust
or any other impurity from the pipes. These
substances could deposit inside and cause the
appliance to malfunction. The connection pipes
must be properly supported so as not to burden
the appliance with their weight.


If the system is shut down during the winter, the
water in the heat exchanger could freeze, causing
irreparable damage to the exchanger itself.
To avoid the risk of freezing, there are three pos-
sible solutions:
     from the appli-
ance.
 , with a glycol per-
centage chosen on the basis of the minimum
external temperature envisaged.
 
In this case the heaters must always be pow-
ered for the entire winter period (machine in
standby).
NLC_H 0280 ÷ 1250
1
2
256 7
7
8
8
910 11
12 13
3
Accumulo
Water Tank
44
 

1 Plate heat exchanger
2 Water temperature sensor (IN/OUT)
3 Air drain valve (standard for size NLC0550-1250)
4 Safety valve (standard for size NLC0550-1250)


3 Air drain valve (only for size NLC0280-0350)
4 Safety valve (only for size NLC0280-0350)
5 Pump
6 Water filter (obligatory)
7 Anti-vibration joints
8 Pressure gauge
9 Flow switch (obligatory)
10 Expansion tank
11 Loading group
12 Electric heater
13 Shut-off valve
WARNING


 
The   allows any impurities in
the hydraulic circuits to be blocked and
eliminated; impurities that could reach the
heat exchanger and damage it.
It is ‘ OBLIGATORY to install the water filter
(not supplied) at a maximum of 1 m from the
cooling water inlet fitting.
The filter must have 

 
The has the task of making sure
that water is circulating in the unit.
If this is not the case, it shuts down the unit.
The unit does not start if the flow switch is not
wired to the panel and should be 

      


Characteriscs of the water
System: Chiller with plate heat exchanger
PH 7.5-9
Electrical conducvity 100-500μS/cm
Total hardness 4.5-8.5 dH
External air < 65°C
Oxygen content < 0.1 ppm
Maximum glycol content 0.5
Phosphates (PO4) < 2ppm
Manganese (Mn) < 0.05 ppm
Iron (Fe) < 0.3 ppm
Alkalinity (HCO3) 70 - 300 ppm
Chlorine ions (Cl-) < 50 ppm
Sulphate ions (SO4) < 50 ppm
Sulphide ion (S) none
Ammonium ions (NH4) none
Silica (SiO2) < 30ppm
Vers. U.M. 280 300 330 350 550 600 650 675 750 800 900 1000 1100 1250
Minimum water content
HAl/kW44444444444444
Minimum water content for process applicaons or operaon with low outdoor temperatures and low
load.
Outlet water temperature adjustment. Design ∆t less than 5°C.
HAl/kW88888888888888

10 - EN
NLC
EN
NLC_HA/HE cod: 4037315_01
WARNING
The selection and installation of the components
outside the appliance is assigned, due to his
competence, to the installer who will have to
operate according to the rules of good practice
and in compliance with the regulations in force in
the country of destination.
The hydraulic piping for connection to the
appliance must be properly scaled for the actual
water flow rate required by the system when
operating. The water flow rate to the heat
exchanger must always be constant.
Clean the system carefully before connecting the
unit. This is done in order to eliminate possible
residues such as welding spatter, waste, rust
or any other impurity from the pipes. These
substances could deposit inside and cause the
appliance to malfunction. The connection pipes
must be properly supported so as not to burden
the appliance with their weight.


If the system is shut down during the winter, the
water in the heat exchanger could freeze, causing
irreparable damage to the exchanger itself.
To avoid the risk of freezing, there are three pos-
sible solutions:
     from the appli-
ance.
 , with a glycol per-
centage chosen on the basis of the minimum
external temperature envisaged.
 
In this case the heaters must always be pow-
ered for the entire winter period (machine in
standby).
WARNING


 
The   allows any impurities in
the hydraulic circuits to be blocked and
eliminated; impurities that could reach the
heat exchanger and damage it.
It is ‘ OBLIGATORY to install the water filter
(not supplied) at a maximum of 1 m from the
cooling water inlet fitting.
The filter must have 

 
The has the task of making sure
that water is circulating in the unit.
If this is not the case, it shuts down the unit.
The unit does not start if the flow switch is not
wired to the panel and should be 

      


Characteriscs of the water
System: Chiller with plate heat exchanger
PH 7.5-9
Electrical conducvity 100-500μS/cm
Total hardness 4.5-8.5 dH
External air < 65°C
Oxygen content < 0.1 ppm
Maximum glycol content 0.5
Phosphates (PO4) < 2ppm
Manganese (Mn) < 0.05 ppm
Iron (Fe) < 0.3 ppm
Alkalinity (HCO3) 70 - 300 ppm
Chlorine ions (Cl-) < 50 ppm
Sulphate ions (SO4) < 50 ppm
Sulphide ion (S) none
Ammonium ions (NH4) none
Silica (SiO2) < 30ppm
Vers. U.M. 280 300 330 350 550 600 650 675 750 800 900 1000 1100 1250
Minimum water content
HAl/kW44444444444444
Minimum water content for process applicaons or operaon with low outdoor temperatures and low
load.
Outlet water temperature adjustment. Design ∆t less than 5°C.
HAl/kW88888888888888
NLC_H 0280 ÷ 1250 vers. P1 - P3 - P5 - P7
NLC_H 0280 ÷ 1250 vers. P2 - P4 - P6 -P8
67
7
8
8
9
Ingresso acqua
Water inlet
Uscita acqua
Water outlet
1
2
3
5
4
13
5
11
10
10
3
2
Accumulo
Water Tank
14

1 Plate heat exchanger
2 Water temperature sensor (IN/OUT)
3 Air drain valve
4 Pump
5 Safety valve
10 Water drain cock
11 Expansion tank


6 Water filter (obligatory)
7 Anti-vibration joints
8 Pressure gauge
9 Flow switch (obligatory)
13 Shut-off valve
14 

EN - 11
NLC
NLC_HA/HE cod: 4037315_01
WARNING
The selection and installation of the components
outside the appliance is assigned, due to his
competence, to the installer who will have to
operate according to the rules of good practice
and in compliance with the regulations in force in
the country of destination.
The hydraulic piping for connection to the
appliance must be properly scaled for the actual
water flow rate required by the system when
operating. The water flow rate to the heat
exchanger must always be constant.
Clean the system carefully before connecting the
unit. This is done in order to eliminate possible
residues such as welding spatter, waste, rust
or any other impurity from the pipes. These
substances could deposit inside and cause the
appliance to malfunction. The connection pipes
must be properly supported so as not to burden
the appliance with their weight.


If the system is shut down during the winter, the
water in the heat exchanger could freeze, causing
irreparable damage to the exchanger itself.
To avoid the risk of freezing, there are three pos-
sible solutions:
     from the appli-
ance.
 , with a glycol per-
centage chosen on the basis of the minimum
external temperature envisaged.
 
In this case the heaters must always be pow-
ered for the entire winter period (machine in
standby).
WARNING


 
The   allows any impurities in
the hydraulic circuits to be blocked and
eliminated; impurities that could reach the
heat exchanger and damage it.
It is ‘ OBLIGATORY to install the water filter
(not supplied) at a maximum of 1 m from the
cooling water inlet fitting.
The filter must have 

 
The has the task of making sure
that water is circulating in the unit.
If this is not the case, it shuts down the unit.
The unit does not start if the flow switch is not
wired to the panel and should be 

      


Characteriscs of the water
System: Chiller with plate heat exchanger
PH 7.5-9
Electrical conducvity 100-500μS/cm
Total hardness 4.5-8.5 dH
External air < 65°C
Oxygen content < 0.1 ppm
Maximum glycol content 0.5
Phosphates (PO4) < 2ppm
Manganese (Mn) < 0.05 ppm
Iron (Fe) < 0.3 ppm
Alkalinity (HCO3) 70 - 300 ppm
Chlorine ions (Cl-) < 50 ppm
Sulphate ions (SO4) < 50 ppm
Sulphide ion (S) none
Ammonium ions (NH4) none
Silica (SiO2) < 30ppm
Vers. U.M. 280 300 330 350 550 600 650 675 750 800 900 1000 1100 1250
Minimum water content
HAl/kW44444444444444
Minimum water content for process applicaons or operaon with low outdoor temperatures and low
load.
Outlet water temperature adjustment. Design ∆t less than 5°C.
HAl/kW88888888888888
Accessorio KRA1 per NLC0280-0350
Accessory KRA1 for NLC0280-0350
Accessorio KRA2 per NLC0550-0675
Accessory KRA2 for NLC0550-0675
67
7
8
8
9
Ingresso acqua
Water inlet
Uscita acqua
Water outlet
1
2
3
5
4
13
5
11
10
10
3
2
NLC_H 0280 ÷ 1250 vers. 01 - 03 - 05 - 07
NLC_H 0280 ÷ 1250 vers. 02 - 04 - 06 - 08
Accumulo
Water Tank

1 Plate heat exchanger
2 Water temperature sensor (IN/OUT)
3 Air drain valve
4 Pump
5 Safety valve
10 Water drain cock
11 Expansion tank
Buffer tank
13 Shut-off valve


6 Water filter (obligatory)
7 Anti-vibration joints
8 Pressure gauge
9 Flow switch (obligatory)
13 Shut-off valve
14 
