AERMEC NLC H User manual



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

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

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

 





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

NLC_HA/HE cod: 4037315_01

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

256 7

910 11

12 13

Accumulo

Water Tank

 



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

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

Ingresso acqua

Water inlet

Uscita acqua

Water outlet

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



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

Ingresso acqua

Water inlet

Uscita acqua

Water outlet

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 



This manual suits for next models

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