AERMEC NRV 0550 Manual

1609.4138423_00Documentazione Originale


partecipa al Programma
EUROVENT: LCP
I prodotti interessati figurano sul sito
www.eurovent-certification.com

EN

3
Dear Customer,
Thank you for choosing an AERMEC product. This product is the result of many years of experience

edge technologies.


products, and as a result they are synonymous with Safety, Quality, and Reliability.
-

Thank you again.
AERMEC S.p.A



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General warnings ................................................................................................................................ 6
Precautions against residual risks........................................................................................................ 6
Instructions ......................................................................................................................................... 6
Preventions.......................................................................................................................................... 7
Receipt and handling........................................................................................................................... 8
Handling the macchine ....................................................................................................................... 8
Lifting standards.................................................................................................................................. 8
Selection on the place of installation ................................................................................................. 8
Placement and installation requirements .......................................................................................... 9
Minimum technical spaces................................................................................................................ 10
Installation - minimum technical spaces and weight distribution..................................................... 10
Hydraulic connections ....................................................................................................................... 11
Hydraulic diagrams and water features............................................................................................. 12
Electrical connections........................................................................................................................ 13
Power supply cable............................................................................................................................ 13
Commissioning - warnings................................................................................................................. 14
Maintenance ..................................................................................................................................... 15
Maintenance - list of the recommended periodic interventions....................................................... 18
Decommissioning and disposal of the machine components ........................................................... 19
Dimensions unit without hydronic kit ............................................................................................... 20


Bevilacqua (VR) Commercial Director
Luigi Zucchi
AERMEC S.p.A.
37040 Bevilacqua (VR) Italy –Via Roma, 996
Tel. [phone]
Telefax 0442 93577–([phone]
www.aermec.com
DICHIARAZIONE DI CONFORMITÀ CE
EC DECLARATION OF CONFORMITY / DECLARATION DE CONFORMITE CE
KONFORMITÄTSERKLÄRUNG EG / DECLARACIÓN DE CONFORMIDAD CE
NAME
Noi, firmatari della presente, dichiariamo sotto la nostra esclusiva responsabilità che l'insieme in oggetto così definito:
We, the undersigned, hereby declare under our own responsibility that the assembly in question, defined as follows:
Nous, Signataires du présent acte, déclarons sous notre responsabilité exclusive que le groupe cité à l’objet défini de la façon suivante:
Die Unterzeichner erklären unter eigener Verantwortung, dass die oben genannte Maschineneinheit, bestehend aus:
Nosotros, los abajo firmantes, declaramos bajo nuestra exclusiva responsabilidad, que el conjunto en cuestión, denominado:
Nome / Name / Nom / Name / Nombre NOME DI PROVA
Tipo / Type / Type / Typ / Tipo TIPOLOGIA DI UNITÀ
Modello / Model / Modèle / Model / Modelo MODELLO (PER ESTESO)
A cui questa dichiarazione si riferisce è conforme a tutte le disposizioni pertinenti delle seguenti direttive:
To which this declaration refers, complies with all the provisions related to the following directives:
Auquel cette déclaration se réfère, est conforme à toutes les dispositions relatives des directives suivantes:
Das Gerät, auf welches sich diese Erklärung bezieht, entspricht allen Verordnungen im Zusammenhang mit den folgenden Richtlinien:
A la que esta declaración se refiere, es conforme con todas las disposiciones pertinentes de las siguientes directivas:
Direttiva Macchine: 2006/42/CE
Direttiva Compatibilità Elettromagnetica EMCD: 2014/30/UE
Direttiva PED in materia di attrezzature a pressione: 2014/68/UE
L’oggetto della dichiarazione di cui sopra è conforme alle pertinenti normative di armonizzazione dell’Unione:
The above-mentioned declaration complies with the harmonised European standards:
L'objet de la déclaration reportée ci-dessus est conforme aux normes d’harmonisation relatives de l'Union:
Der Gegenstand der genannten Erklärung entspricht den diesbezüglichen harmonisierten Normen der europäischen Gemeinschaft:
El objeto de la declaración de arriba es conforme con las normativas pertinentes de armonización de la Unión:
CEI EN 60204-1: 2006 CEI EN 61000-6-2: 2006 EN378-2: 2012
UNI EN ISO 12100: 2010 CEI EN 61000-6-4: 2007 UNI EN 12735-1: 2010
UNI EN 14276-1: 2011
La presente dichiarazione di conformità è rilasciata sotto la responsabilità esclusiva del fabbricante.
This declaration of conformity has been released under the exclusive responsibility of the manufacturer.
La déclaration de conformité présente est délivrée sous la responsabilité exclusive du fabricant.
Diese Konformitätserklärung wurde unter der ausschließlichen Verantwortung des Herstellers ausgestellt.
Esta declaración de conformidad se ha otorgado bajo la responsabilidad exclusiva del fabbricante.
La persona autorizzata a costituire il fascicolo tecnico è Luca Martin. Il prodotto, in accordo con la direttiva 97/23/CE, soddisfa la procedura di Garanzia qualità
Totale (modulo H) con certificato n.06/270-QT3664 Rev.8 emesso dall’organismo notificato n.1131 CEC via Pisacane 46 Legnano (MI) - Italy.
The person authorised to compile the technical file is Luca Martin. The product, in agreement with Directive 97/23/CE, satisfies the Total quality Guarantee
procedure (form H) with certificate no. 06/270-QT3664 Rev. 8 issued by the notified body n.1131 CEC via Pisacane 46 Legnano (MI) - Italy.
La personne autorisée à constituer le dossier technique est Luca Martin. Le produit, selon la directive 97/23/CE, respecte la procédure de Garantie de qualité
Totale (module H) par le certificat n.06/270-QT3664 Rév.8 émis par l’organisme notifié n.1131 CEC via Pisacane 46 Legnano (MI) - Italie.
Die bevollmächtigt, die technischen Unterlagen zusammenzustellen ist Luca Martin. In Übereinstimmung mit der Richtlinie 97/23/EG, erfüllt das Produkt die
Anforderungen des Verfahrens der umfassenden Qualitätssicherung (Modul H), Zertifikat Nr.06/270-QT3664 Rev.8, ausgestellt durch benannte Stelle Nr. 1131
CEC Via Pisacane 46, Legnano (MI) - Italy.
La persona facultada para elaborar el expediente técnico es Luca Martin. El producto, conforme a la directiva 97/23/CE, cumple con el procedimiento de
Garantía de calidad total (módulo H) con certificado n. 06/270-QT3664 Rev. 8 emitido por el organismo autorizado n. 1131 CEC via Pisacane 46 Legnano (MI) -
Italia.
NRV
NRV
Outdoor Chiller

6

This product is a complex machine. Things and persons may be exposed to


oils, moving mechanical parts pressure, heat sources, electricity.

for persons in possession of appropriate training to enable them to operate


manuals and any other material of reference. They must also know and

ATTENTION
Any intervenon on the unit must be performed by authorised and quali-
ed experienced technicians, in accordance with current regulaons.
The unit shows the following risks:
• Risk of electric discharges.
• Risk of injuries due to rotang parts.
• Risk of injuries due to sharp edges and heavy weights.
• Risk of injuries due to high pressure gas.
• Risk of injuries due to high or low temperatures of components.
• Substances inside the water;
It is vital that all work on the unit is performed in compliance with the
local standards. All work on the system must be performed to perfecon


- Install the unit according to the requirements herein
 

 
manual
 
…)


- The machine must be transported in compliance with current regu-


 
refrigerant leaks. Before commissioning, check for leaks and make any
necessary repairs.
 


necessary.
- The machine must not be installed in environments with risk of explo-

cannot be installed outdoors
- The machines must be installed in structures protected from lightning
as provided by the applicable laws and technical standards
 
on electrical equipment and, for lubricant oil of the compressor and
-
ple a CO2
 
 

 -

 
 
circuit shown on the serial number plate
- Before removing elements along the under pressure water circuits,

pressure and that of the atmosphere are balanced.
 
performed on under pressure equipment except during maintenance
that must be carried out by competent and authorised personnel
- Perform brazing or welding only on empty pipes and clear of any


 
 

- Do not use your hands to control any refrigerant leaks
- Keep all lubricants in properly marked containers
 
 
running
 
even for limited periods or emergencies
 
- Before opening the electrical panel, disconnect the unit from the mains
by means of the external isolator
- In case of units with shunt capacitors, wait 3 minutes from when power
supply was disconnected from the unit before accessing inside the
electrical panel
- If the unit is equipped with integrated inverter compressors, discon-
nect the power supply and wait at least 5 minutes before accessing


 -

- In case a piece is disassembled, make sure it is correctly reassembled

 
exchangers exceed the temperature limits indicated in the documenta-

 

 
Warning;
Biological hazard
Electricity
Wear head
protection
Wear ear protection
Wear eye protection
Warning;
Sharp element
Wear protective
gloves
Wear safety
footwear
Warning;Warning; Warning;
Flammable material
Warning;
Hot surface

7
any other use can be dangerous and void the warranty

 

 

before accessing them
- the machine and the pipes have very hot and very cold surfaces that
lead to risk of burns
 
connected to it by hinges
- Louvers of the heat exchangers, edges of the components and metal
panels can generate cuts
 





-


 
be kept out of the reach of children as it is a source of danger
- In units with compressors in parallel, do not disable the individual
compressors for long periods.

8





-
tween the belts and the framework to prevent damage to the structure.

straps hooked to all the installed eyebolts.

 
 
 

 
 
- Handle the unit with care and without sudden movements.
 
WARNING: The units cannot be stacked.

The chiller is shipped already tested and only requires electrical and hydrau-



- The support surface must withstand the weight of the unit.
- The safety distances between the units and other appliances or struc-
tures must be scrupulously respected.
 

- It is mandatory to foresee the necessary technical space in order to

 

base according to the assembly layout.
- Fix the unit checking that it is level.
WARNING: The units cannot be stacked.
WARNING:
• It is prohibited to stop under the unit during liing operaons.
• The units cannot be stacked.
• The unit must be installed in order to make possible the maintenance
and / or repair.
WARNING: Liing bars are NOT provided.
Don’t use aer liing point except for that present.
WARNING:
If the unit is installed in parcularly windy locaons the provision of wind
barriers may be necessary to avoid malfuncons.
Ø50mm

9



 

causing the refrigerant to leak in the environment and, if so, make the
appropriate adjustments.
 

 

 


 
withstand the weight of the unit with a full refrigerant load, as well as
the occasional presence of the normal maintenance equipment.
 
base must rest on concrete columns with a depth greater than the
normal depth of frost of the soil. It is always advisable to build a sup-
port base separate from the main building to avoid the transmission of

 



ATTENTION: The use of an-vibraon supports MUST be combined with
the installaon in the unit water piping of exible couplings. The an-
vibraon supports must be xed to the unit BEFORE it is earthed. AERMEC
is not responsible for the choice of capacity of the an-vibraon supports.
 
-

 -
led to the base. If necessary, use spacers or level the base but, in any

surface.
• 
-
. Only for air-cooled units: if the outlet air from
the condensers meets any obstacle, it tends to go back on the fans.
This increases the temperature of the air used to cool the condensers.

-

the condensing pressure. This leads to a loss of power and increase of

 -
vailing winds, the units cannot be completely covered with a high and


air exhaust duct at the same height as the surrounding shield.
ATTENTION: It is important that the units are installed at. The improper
installaon of the unit invalidates the warranty.
Windbreak
recommended with wind above 2.2 m/s
Installaon not allowed
RECEPTION

   
R134a <50°C
 <50°C
 <50°C

-
mend applying the following procedures:
• Make sure there is no water inside the hydraulic systems.
 
 
• Make sure that the electrical panels are closed.
 

NOTE The maximum storage temperature of the units depends on the type of refrigerant contained, see table. Beyond this limit, there is a risk of refri-
gerant leaking through the safety valves.





 
 AC
      
  1 2 0 1500 0 2000 3000
1060
ELECTRICAL
BOX
A


C


Xg
Yg
1 3
2 4
Top View



       -

NRV  
   1234
1 XG1  26.9 24.0 26.0 23.2
1105* 1180 561


11

The units may be available with or without integrated hydronic kit, in any
case:
ATTENTION The choice and installaon of components external to the unit
is up to the installer, who must operate according to the rules of good
technical design and in compliance with the regulaons in force in the
country of desnaon.
ATTENTION The hydraulic connecon pipes to the unit must be suitably
dimensioned for the eecve water ow rate requested by the system
when running. The water ow rate to the heat exchanger must always be
constant
ATTENTION Wash the system thoroughly before connecng the unit. This
cleaning will eliminate any residues such as welding drips, scale, rust, or
other impuries from the piping. These substances can also deposit inside
and cause unit malfuncons. The connecon piping must be adequately
supported so that its weight does not rest on the appliance




-
bly be installed upstream so that the evaporator/condenser is subject to a

the dimension tables in this manual, or available on www.aermec.com

 
-

 


• To maintain the pressure in the circuits, you must install an expansion
valve and a safety device
 
 
 
 

• If the external water pipes are in an area where it is likely that the envi-
ronment temperature drops below 0°C, insulate the pipes and provide

the unit.
• Refer also to the percentage of recommended glycol, in the technical
manual
ATTENTION

 

 
FAILURE TO DO THIS INVALIDATES THE WARRANTY.

In the event the system is stopped during winter, the water in the heat
exchanger can freeze damaging the heat exchanger irreversibly. To prevent

1. Full water discharge from the unit.
2. Using the resistances. In this case the resistances must always be


 
the minimum outdoor temperature expected.

ATTENTION: the addion of glycol is the only eecve protecon against
freezing; the glycol/water soluon must be suciently concentrated to
ensure proper protecon and prevent ice forming at minimum tempera-
ture provided for a given installaon. Take the necessary precauons if
using non-passivated MEG an-freeze soluons (monoethylene glycol or
monopropylene glycol). Corrosion phenomena may occur with these an-
freeze soluons in contact with oxygen.
However, always refer to the glycol supplier documentaon to check its
recommended concentraon.

12


1 Air vent valve
 
 
 
5 Electrical heater
6 Plate heat exchanger
7 Pressure switch
 
9 Discarge valve
Standard Circuit
6
4
4
3
8
9
5
1
2
7
Water features
System: Chiller with plate heat exchanger
PH 7,5-9
Electric conductivity 100-500μS/cm
Total hardness 4,5-8,5 dH
Temperature < 65°C
Oxygen content < 0,1 ppm
Max. glycol amount 0,5
Phosphates (PO4) < 2ppm
Manganese (Mn) < 0,05 ppm
Iron (Fe) < 0,3 ppm
Alkalinity (HCO3) 70 - 300 ppm
Chloride ions (Cl-) < 50 ppm
Sulphate ions (SO4) < 50 ppm
Sulphide ion (S) none
Ammonium ions (NH4) none
Silica (SiO2) < 30ppm

13

The units are completely wired at the factory and only require connec-

according to that envisioned by the Standards in force on this subject in the

It s also advised to check that:
 


 

 
 
upstream against short circuits and dispersions to earth, which isolates

 


respected, contact the electric energy public body.
 


- The use of an omnipolar magnet circuit breaker switch, in compliance
-

data table shown below, installed as near as possible to the appliance.
 
considered responsible for any damage caused by the lack of or inef-

 
of the phases.
ATTENTION
- All the electrical operaons must be carried out by personnel in posses-
sion of the necessary qualicaons by law, suitably trained and informed
on the risks related to these operaons.
- The characteriscs of the electrical lines and of the related components
must be determined by sta qualied to design electrical systems, in
compliance with the internaonal and naonal regulaons of the place of
installaon of the unit and in compliance with the regulaons in force at
the moment of installaon
- For the installaon requirements refer only to the wiring diagram
supplied with the unit. - The wiring diagram along with the manuals must
be kept in good condion and always available for any future servicing on
the unit.
- IT ISmandatory to verify that the machine is waterght before making
the electrical connecons and it must only be powered up aer the
hydraulic and electrical works have been completed.



it is up to the PLANNER to calculate the appropriate line switch, the power

cables depending on:
- The length
- The type of cable
 
temperature.
 

   IL
     
 
    
      2  2 2 
  1 2 2 3 1 35 3 1,5 1 X 35 125
 Peak current from unit
 Maximum current from unit
 Earth wire to connect to unit
IL Master switch



14


owner of the machine, the units in this series can be started up by the







ATTENTION
the unit is not working:
Check:
 
 
- The minimum technical spaces have been respected
 


 



ATTENTION
the unit is sll not working:
- Supply power to the unit by turning the master switch to the ON posi-

- Use a tester to verify that the value of the power supply voltage to the


 

- Verify that the resistor of the compressor sump is working by measu-
ring the increase in temperature of the oil pan. The resistance/s must

any event, the temperature of the oil pan must be 10-15°C higher than
room temperature.

 

installed at the evaporator inlet.

 
-
led.
 

evaporator pressure drop tables present in this manual.
 

panel must show the block. Finally re-open the valve and rearm the
block.

 
can be commissioned
- Close the door of the electrical panel.
 

ATTENTION
the unit is working:
Check:
- That the compressor input current is lower than the maximum indica-
ted in the electrical data table.
 
-








the problem, disconnect and swap the wires between two of the pha-
ses, then connect the three-phases again.
 -


 
standby mode. In order to prevent the heat exchanger from damage
-




-

5°C. The water pump is always on.
ATTENTION
The an-freeze set temperature can only be varied by an authorised aer-
sales centre and only aer having checked that there is a suitable % of
an-freeze soluon in the water circuit.
Whenever this alarm intervenes, call the nearest authorised aer-sales
service immediately
 -







ATTENTION
Any cleaning, inspecon, control, roune and extraordinary maintenance
must be performed by experienced, authorised personnel and qualied to
perform the above tasks. These tasks must be performed to perfecon as
prescribed by M.D. 37/2008.

 
 
 
- Risks of injuries due to the presence of components containing high

- Risks of injuries due to high or low temperature components.
 
- Risks related to the presence of harmful substances in hydronic circu-
its.




and safety.
-

in the:
 -
tainment”
 -


ATTENTION
For the unit, the user must provide a system booklet which he must
ensure, or its designee authorised to service the machine, will contain all
required records in order to have a historical documentaon of the unit
funconing. The absence of records in the booklet may count as evidence
of lack of maintenance

ATTENTION
Maintenance operaons can only be performed by authorised techni-
cians.


 

- In case a piece is disassembled, make sure it is correctly reassembled

- Louvers of the heat exchangers, edges of the components and panels,

 

 

 
 


- Isolate the unit from the mains by means of the external isolator


 
open isolator
 


 

- If having to take measurements and perform checks that require the
machine to run, you must:
 



 
- Close the electrical board as soon as the single measurement or con-
trol is performed
 

- The cooling circuit contains under pressure refrigerant gas: any opera-


ATTENTION
it is forbidden to LOAD the cooling circuit with a refrigerant gas dierent
from that indicated. Using dierent refrigerant gas can
severely damage the unit
- never keep the cooling circuit open, because the oil absorbs humidity
and degrades
 -
rous temperatures and/or pressures
 
when replacing electronic boards
- if replacing a motor, compressor, evaporator, condensing coils or any

with the weight to be handled
- in air units with independent compressor compartment, do not access


not turn on - maintenance in progress”
Warning;
Biological hazard
Electricity
Wear head
protection
Wear ear protection
Wear eye protection
Warning;
Sharp element
Wear protective
gloves
Wear safety
footwear
Warning;Warning; Warning;
Flammable material
Warning;
Hot surface

16
- contact the company if changes must be made to the refrigerant,
hydraulic or electric diagram of the unit, as well as its control logic

 -
KING”
 
- The water circuit may contain harmful substances. Prevent the contents
coming into contact with skin, eyes and clothing. Use the prescribed

- If there is a need to perform a braze-welding, so with the use of special

the absence of freon gas in the environment and on the cooling circuit

-
ming lethal and carcinogenic compounds.
 2-




 
on under pressure equipment except during maintenance that must be

- Perform brazing or welding only on empty pipes and clear of any


 
 
 
these devices intervene, the refrigerant gas is released at high tempe-

- The machine and the pipes have very hot or very cold surfaces that

 
- Before removing elements along the under pressure hydronic circuits,

pressure and that of the atmosphere are balanced.

- Before opening the electrical panel, disconnect the unit from the mains

 
supply was disconnected from the unit before accessing inside the

- If the unit is equipped with integrated inverter type compressors, di-
sconnect the power supply and wait at least 5 minutes before accessing




cleaned.






 




 

 

 

 

 -

 

- If replacing a motor, compressor, evaporator, condensing coil or any


- In air units with independent compressor compartment, do not access



- Always and only use original spare parts purchased directly from



 

- The machine must be loaded with the refrigerant in the feature label

- Make sure to have removed all tools, electrical cables or other loose
object and having perfectly connected the machine to the system

 



and viewable in the control panel of the same. In the case of machines
with cooling circuit compartment open, stand in front of the control
panel of the electrical panel remaining distant and not exposed to the
under pressure parts of the cooling circuit
ATTENTION
When having to take measurements with the machine on and the electri-
cal panel and cooling circuit open, be careful since the machine is live, the
cooling circuit contains high pressure gas, the pipes may be hot or cold,
some parts may be in moon.

pumps and fans as well as the power supply measurements, must be taken
as follows:
 
 -



- Access the machine and read the measurements made by the instru-

 
the instruments and close the electrical panel.
The measurements of the compressor inlet and outlet temperature and

must be carried out as follows:
The measurements of the compressor inlet and outlet temperature and

must be carried out as follows:
 

17
- Connect the necessary instruments,
• Pressure gauges connected through appropriate extensions to the

 
to the compressor inlet and outlet pipes. Avoid using metratast that

- Access the machines 

 
the instruments and close the cooling circuit compartment.
The high/low pressure switch, where present must be tested with the ma-

control panel.
In case of machines with the cooling circuit compartment not closed by fra-
mework, the high/low pressure switch must be tested by standing in front
of the machine panel where the control panel is located, remaining distant
and not exposed to the under pressure parts of the cooling circuit.



other foreign material must be removed periodically from the surface of





-
cient to remove all foreign material, proceed with care to avoid damage and

Lastly rinse abundantly also the carpentry and the fans to be sure that you


18

1 we do not recommend swabbing as it can ruin the inner lining of the pipes, we recommend using appropriate chemicals




   

 


 •
Check of the unit power supply voltage •
Check of the compressors' power supply voltage •
Check of the fan power supply voltage •
Check of the solenoid valves •
 •
Replacement of the safety valve •
Check and reading of the pressure/temperature probes •
 •
Check of compressors contactors •
Check of fans contactors, where present •
Exchanger coils cleaning •
Check and cleaning of shell and tube heat exchangers if necessary where present  •
Check of electric resistances of the heat exchangers •

 •
General cleaning of the unit •
Bleed the hydraulic circuit and the heat exchangers, the simultaneous presence of air and


 •
Subcooling temperature measurement •
Exhaust gas temperature measurement •
 •
 •

Check oil level •
Check oil acidity •
Oil replacement
compressore vite 8000 ore
compressore scroll 12000 ore
 •
Check oil level sensor, if any •

 •
Check the pump rotor gasket •
 •
Check the seal of the shell and tube heat exchanger heads, where present •
 •
 •
 3
months *
 •
The frequency of the operaons described herein is a guideline one and they may vary depending on how the unit is used and the type of system where it
is installed. However, if the unit is installed in harsh environments, we recommend reducing the me of intervenon
* To replace the glycol, refer to the documentaon provided by the supplier.

19



  

Check that the compressor is not damaged •
 •

Check the power supply voltage •
Check the proper fastening of the compressor power supply cables •
 •
 •
 •
Replace the storage tank condensers every 5 years
 •


 •
 •
Visually check that the electronic boards are have no burns or are damaged •
Check that the reading of the pressure/temperature sensors is correct

 •
Check the charge of refrigerant gas  •
 •


ATTENTION
The unit contains greenhouse eect uoride gases covered by the Kyoto
Protocol. The law prohibits its dispersion in the environment and requires
its recovery and delivery to the dealer or collecon centre.


order to minimise the environmental impact, respect the following disposal
requirements:
- The refrigerant gas must be fully recovered in special containers and


 -

- The structure, electric and electronic equipment and components must


 

 


