AERMEC nrl R410A Instruction Manual

° STANDARD
L COMPACT SILENCED
H COMPACT HEAT PUMP
HL SILENCED COMPACT HEAT PUMP
NRL
R410A
R410A
INRLPY.0609.4537905_02
53 KW ÷ 81 KW
❄
58 KW ÷ 82 KW
❊
87 KW ÷ 156 KW
❄
99 KW ÷ 165 KW
❊
TECHNICAL INSTALLATION MAINTENANCE MANUAL
Chillers and air water heat pumps and motorcondensers with scroll compressors
English
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Dear Customer,
Thank you for choosing an AERMEC product. This product is the result of many years of experience and in-depth engine-
ering research, and it is built using top quality materials and advanced technologies.
In addition, the CE mark guarantees that our appliances fully comply with the requirements of the European Machinery
Directive in terms of safety. We constantly monitor the quality level of our products, and as a result AERMEC products
are synonymous with Safety, Quality, and Reliability.
Product data may be subject to modifications deemed necessary for improving the product without the obliga-
tion to give prior notice.
Thank you again.
AERMEC S.p.A
AERMEC S.p.A. reserves the right at any moment to make any modifications considered necessary to improve our products and is not
obliged to add these modifications to machines that have already been manufactured, delivered or are under construction.
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For the installation of the appliance, please comply with the safety rules and regulations contained in these instructions
High temperature hazard
Moving parts hazard
Voltage hazard i
Danger: Disconnect voltage
Generic danger
Useful information and notices
1. Notes regarding the documentation ..............................................3
1.1. Use in compliance with destination .................................................3
1.2. Preservation of the documentation ................................................3
2. Fundamental safety regulations........................................................3
3. Product identification.............................................................................3
4. Description of the unit...........................................................................4
4.1. Models available ......................................................................................4
4.2. Versions available....................................................................................4
4.3. Silenced motorcondensers (CL) .......................................................4
4.4. Configurator...............................................................................................5
5. Description of the components.........................................................6
5.1. NRL 0280-0300-0330-0350.........................................................6
5.2. NRL 0500-0550-0600-0650-0700............................................7
5.3. Cooling circuits, hydraulic (° - L) .......................................................8
5.4. Cooling circuits, hydraulic (H - HL) ..................................................9
5.5. Cooling circuit......................................................................................... 10
5.6. Frame and fans ..................................................................................... 10
5.7. Hydraulic components........................................................................ 10
5.8. Control and safety components .................................................... 10
5.9. Electric components ............................................................................11
6. Accessories .............................................................................................11
7. Technical data ........................................................................................ 13
7.1. Technical data for versions ( ° - L) ................................................. 13
7.2. Technical data for versions (H - HL).............................................. 15
7.3. Technical data for versions (C) ....................................................... 17
8. Operational limits.................................................................................. 18
8.1. Cooling mode functioning ................................................................. 18
8.2. Heating mode functioning................................................................. 18
8.3. Motorcondensing functioning......................................................... 18
9. Corrective coefficients....................................................................... 19
9.1. Cooling capacity and input power ................................................. 19
9.2. Heating capacity and input power.................................................20
9.3. For ∆t different to the nominal.......................................................20
9.4. Deposit factors......................................................................................20
10. Ethylene glycol solution.......................................................................21
10.1. How to interpret glycol curves ....................................................... 21
11. Pressure drops .....................................................................................22
11.1. Total pressure drops ..........................................................................22
12. Storage tank...........................................................................................23
12.1. Minimum/maximum water content in the system .............23
12.2. ...................................................................................................................23
12.3. ...................................................................................................................23
13. Capacity control .................................................................................... 24
14. Desuperheater ......................................................................................25
14.1. Pressure drops .....................................................................................25
15. Total recovery.........................................................................................26
15.1. NRL (T).....................................................................................................26
15.2. Pressure drops .....................................................................................26
16. Dimensionement cooling lines version (C)................................. 27
17. Sound data ..............................................................................................28
18. Calibration of control and safety parameters .........................29
19. Dimensions..............................................................................................30
19.1. NRL 0280 - 0300 - 0330 - 0350 versions L - HL................30
19.2. Minimum technical spaces ..............................................................30
19.3. Anti-vibration mounts position ........................................................30
19.4.
NRL 0500 - 0550 - 0600 - 0650 - 0700 versions ° - L - H - HL .. 31
19.5. Minimum technical spaces .............................................................. 31
19.6. Anti-vibration mounts position ........................................................31
19.7. Percentage of wieght distribution on supports ............................
(empty weight) version (L - HL) .......................................................32
19.8. Percentage of weight distribution on supports ...........................
(machine working) version (L - HL)................................................33
19.9. Percentage of wieght distribution on supports ............................
(empty weight) version (°) .................................................................34
19.10. Percentage of weight distribution on supports ...........................
(machine working) version (°)..........................................................34
19.11. Percentage of wieght distribution on supports ............................
(empty weight) version (H)...............................................................35
19.12. Percentage of weight distribution on supports ...........................
(machine working) version (H)........................................................35
20. Safety warnings and installation regulations............................36
21. Receiving the product.........................................................................36
21.1. Handling....................................................................................................36
21.2. Positioning ...............................................................................................36
21.3. Handling example .................................................................................36
22. Hydraulic circuits.................................................................................. 37
22.1. Hydraulic circuit inside NRL "00" ..................................................37
22.2. Hydraulic circuit inside NRL"P1-P2-P3-P4" ..............................37
22.3. Hydraulic circuit inside NRL "01-02-03-04-05-06-07-08" 38
22.4. Hydraulic circuit inside NRL "09-10"............................................38
23. Filter maintenance ..............................................................................39
23.1. Procedure to follow to clean the filter: .......................................39
24. Position of hydraulic connections ..................................................40
24.1. Position of hydraulic connections motorcondensing version ... 41
25. Electrical connections.........................................................................42
25.1. Unit electric lines and data...............................................................42
25.2. Electrical data ........................................................................................42
25.3. "GR3" control board............................................................................43
25.4. Connection to the electric power supply mains......................44
25.5. Electric connections ............................................................................45
26. Commissioning ......................................................................................45
26.1. Preliminary operations.......................................................................45
26.2. Commissioning ......................................................................................46
26.3. System loading unloading .................................................................46
27. Maintenance........................................................................................... 47
28. Disposal .................................................................................................... 47
28.1. Disconnecting the unit........................................................................47
28.2. Dismantling and disposal .................................................................. 47
29. Improper use..........................................................................................48
29.1. Important safety information ..........................................................48
30. R410a refrigerant gas .......................................................................48
INDEX
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AERMEC S.p.A.
37040 Bevilacqua (VR) Italy – Via Roma, 996
Tel. [phone]
Telefax 0442 93730 – ([phone]
www.aermec.com - [e-mail]
SERIAL NUMBER
EC DECLARATION OF CONFORMITY We, the undersigned, hereby declare under our own responsibility that the assembly in
question, defined as follows:
NAME NRL
TYPE AIR/WATER HEAT PUMPCHILLER
MODEL
To which this declaration refers, complies with the following harmonised standards:
CEI EN 60335-2-40 Safety standard regarding electrical heat pumps, air conditioners and dehumidifiers
CEI EN 61000-6-1
CEI EN 61000-6-3 Immunity and electromagnetic emissions for residential environments
CEI EN 61000-6-2
CEI EN 61000-6-4 Immunity and electromagnetic emissions for industrial environments
EN378 Refrigerating systems and heat pumps - Safety and environmental requirements
UNI EN 12735
UNI EN 14276
Seamless, round copper tubes for air conditioning and refrigeration
Pressure equipment for cooling systems and heat pumps
Therefore complying with the essential requirements of the following directives:
- LVD Directive: 2006/95/CE
- Electromagnetic compatibility Directive2004/108/CE
- Machinery Directive 98/37/CE
- PED Directive regarding pressurised devices 97/23/CE
The product, in agreement with Directive 97/23/CE, satisfies the Total quality Guarantee procedure (form H) with certificate
n.06/270-QT3664 Rev.3 issued by the notified body n.1131 CEC via Pisacane 46 Legnano (MI) - Italy
Bevilacqua 15/01/2008
Marketing Manager
Signature
NRL
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PS(HP/LP) bar
InRx max =A
Itot
max =A
FRE DDO
COLD
FROID
KUHLUNG
R407C Kg
TS(HP/LP) C Min.
Max.
RES.EL/EL.HEATER
RES.EL/E-HEIZUNG kWmax =
Pf= kW
Pe=kW
In=A
Is=A
vers. Prod. date
Serialno
AERME C SPA -via Roma44
37040- Bevilacqua(VR )- I T AL IA
IP
MOD.
CALDO
HEAT
CHAUD
HEIZUNG
Pt= kW
Pe=kW
In=A
Is=A
TECHNICAL
PLATE
PS(HP/LP) bar
InRx max =A
Itot
max =A
FRE DDO
COLD
FROID
KUHLUNG
R407C Kg
TS(HP/LP) C Min.
Max.
RES.EL/EL.HEATER
RES.EL/E-HEIZUNG kWmax =
Pf= kW
Pe=kW
In=A
Is=A
vers. Prod.date
Serialno
AERME C SPA- viaRoma44
37040- B evilacqua( VR ) - IT AL IA
IP
MOD.
CALDO
HEAT
CHAUD
HEIZUNG
Pt= kW
Pe=kW
In=A
Is=A
TECHNICAL
PLATE
PACKING
LABEL
PACKING
LABEL
1.1. USE IN COMPLIANCE WITH
DESTINATION
AERMEC units are constructed accord-
ing to the recognised technical stand-
ards and safety regulations. These
appliances are designed and built for
heating and hot water production and
also for cooling and must be used in
compatibility with their technical fea-
tures. In spite of this, dangers to the
user or third parties may arise, as well
as damage to the appliance and other
objects, in the event of improper use
and use that is not in compliance with
that envisioned.
Any use not expressly indicated in this
manual is not permitted. Consequently
AERMEC will not assume any respon-
sibility for damage that may occur
due to failure to comply with these
instructions.
1.2. PRESERVATION OF THE
DOCUMENTATION
The installation instructions, along with
all the related documentation, must be
given to the user of the system, who as-
sumes the responsibility of keeping the
instructions so that they are always at
hand in case of need.
READ THIS DOCUMENT CAREFULLY ,
the appliance must be installed by
qualified and suitably prepared staff in
compliance with the national legislation
effective in the country of destination.
The appliance must be installed so that
maintenance and/or repairs can be
carried out. The appliance warranty
does not cover the costs for ladders,
scaffolding, or other elevation systems
that may become necessary for carry-
ing out servicing under warranty.
The validity of the warranty shall be
void in the event of failure to comply
with the above-mentioned indications.
We remind you that the use of prod-
ucts that employ electrical energy
and water requires that a number
of essential safety rules be followed,
such as:
This appliance is not suitable for use
by persons (including children) with
limited physical, sensory, or mental
capacities or those lacking experi-
ence or know-how, unless they are
supervised or instructed regarding
the use of the appliance by a person
who is responsible for their safety.
Children must always be supervised
to ensure they do not play with the
appliance.
It is prohibited to carry out any techni-
cal or maintenance operation before
the unit has been disconnected from
the electrical mains by switching off
the master switch of the system and
the main power switch on the control
panel.
It is prohibited to modify the safety or
adjustment devices without the man-
ufacturer’s authorisation and precise
instructions
It is prohibited to pull, disconnect, or
twist the electrical cables coming
from the unit even if disconnected
from the electrical mains.
It is prohibited to leave containers
and flammable substances near to
the unit.
It is prohibited to touch the appliance
when you are barefoot and with parts
of the body that are wet or damp.
It is prohibited to open the access
hatches to the internal parts of
the appliance without first having
switched off the system master
switch.
It is prohibited to disperse or aban-
don the packing materials and they
must be kept out of the reach of chil-
dren, as they are a potential source
of danger.
1. NOTES REGARDING THE DOCUMENTATION
2. FUNDAMENTAL SAFETY REGULATIONS
3. PRODUCT IDENTIFICATION
NRL can be identified by means of:
−Packing label
that reports the identification data of
the product.
−Technical plate
positioned on the lateral cross-member
of the electric box.
NOTE:
Tampering, removal, lack of the identi-
fication plate or other does not allow
safe identification of the product and will
make any installation or maintenance
operation to be performed difficult.
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4. DESCRIPTION OF THE UNIT
−The appliances in the NRL series
are units used for the production
of cold water for technological
systems. The heat pump models
also allow to produce hot water
for heating. They are made up of
two R410A cooling circuits and a
unique hydraulic circuit, which may
or may not be supplied with stor-
age or pumping unit. The presence
of several scroll compressors al-
lows NRL chillers various partialisa-
tions of the cooling capacity.
The electronic adjustment with mi-
croprocessor controls and manag-
es all components and functioning
parameters. An internal memory
records the functioning conditions
when an alarm occurs in order to
show it on the display. The units
have an IP 24 protection rating.
4.
1. MODELS AVAILABLE
−“COOLING ONLY” (°- L)
maximum external temperature
accepted 42°C;
−temperature water product 18°C;
−“HEAT PUMP” (H - HL)
in cooling mode the operational lim-
its reach a maximum external air
temperature of 42°C;
−temperature water product 18°C;
−in heating mode the operational
limits reach a maximum external
air temperature of 42°C;
−temperature water product
50°C;
−NRLH does not envision the fol-
lowing configurations:
−
YH (with water produced lower than 4 °C)
− HC ( motorcondencing heat pump )
4.2. VERSIONS AVAILABLE
• RECUPERATORI DI CALORE:
HEAT RECUPERATORS:
with desuperheater inserted
in series (D).
−ATTENTION:
In heat pump models the desuper-
heater must be shut-off in heat
pump mode, or the warranty will be
come void.
• Total heat recovery (T)
With plate heat exchanger
inserted in parallel with the coils.
− Both of these versions (D - T) have:
−Hot gas by-pass device upstream
from the evaporator.
−Water filter before the recovery
heat exchanger.
Units with Desuperheater (D)
or Total Recovery (T) do not envision
the following versions:
−YD
−YT
−XT
(only for temperature under 4°C)
−XD ( only for temperature under 4°C )
4.3. SILENCED
MOTORCONDENSERS (CL)
The NRL-C motorcondensers do not
envision the following versions:
−HC (motorcondencing heat pump)
−
TC (motorcondensing with total recovery)
−DC motorcondensing with storage
tank.
Mechanical thermostatic valve
−version Y: it is the version that al-
lows to produce cooled water be-
low the standard value of +4 °C to a
minimum of -6 °C. Contact the head
office for lower values.
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4.4. CONFIGURATOR
Campo
1, 2 ,3 Code NRL
4, 5, 6 Size 028, 030, 033, 035, 050, 055, 060, 065, 070
7 Compressor
°Standard compressor
8 Thermostatic valve
°Standard mechanical thermostatic valve
YLow water temperature mechanical thermostatic valve (to -6°C)
XElectronic thermostatic valve also for low water temperature (to -6°C)
9 Model
°Cooling Only
CMotorcondensing
HHeat Pump
10 Heat recovery
°Without recuperators
DDesuperheater
TTotal recovery
11 Version
°Standard Cooling Only
LCompact silenced
12 Coils
°In aluminium
RIn copper
STinned copper
VPainted
13 Fans
°Standard
MLarger
14 Power supply
°400V-3N-50Hz with magnet circuit breakers
1230V-3-50Hz with magnet circuit breakers
2500V-3-50Hz with magnet circuit breakers
15, 16 Storage tank
00 Without hydronic storage tank
01 Low static pressure storage tank and single pump
02 Low static pressure storage tank and reserve pump
03 High static pressure storage tank and single pump
04 High static pressure storage tank and reserve pump
05 Storage tank with holes for int. res. low static pressure and single pump
06 Storage tank with holes for int. res. low static pressure and reserve pump
07 Storage tank with holes for int. res. high static pressure and single pump
08 Storage tank with holes for int. res. high static pressure and reserve pump
09 Double water ring
10 Double water ring with integrated resistance
P1 Without storage tank with low static pressure
P2 Without storage tank with low static pressure pump and reserve pump
P3 Without storage tank with high static pressure
P4 Without storage tank with high static pressure pump and reserve pump
1,2,3 4,5,6,7 8 9 10 11 12 13 14 15 16,17
NRL028 °°°°°°°°00
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5. DESCRIPTION OF THE COMPONENTS
8
10
9
1
2
3
5
20
12
4
7
6
15 16 17
18
19
11
14
13
5.1. NRL 0280-0300-0330-0350
1 Plate heat exchanger 11 Compressors
2 Storage tank 12 Storage tank draining
3 Expansion vessel 13 Desuperheater
4 Pumps 14 Mounted filter
5 Loading unit 15 Cycle reversing valves
6 Safety valve 16 Liquid storage tank
7 Vent valve 17 Thermostatic valves
8 Coil 18 Dehydrator filter
9 Fans 19 Liquid separator
10 Electric Control Board 20 Electric resistance
NOTE:
The drawings shown are only
an example.
KEY:
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5.2. NRL 0500-0550-0600-0650-0700
8
10
9
1
2
3
5
20
12
4
7
6
15
16 17
18
11
14
13
1 Plate heat exchanger 11 Compressors
2 Storage tank 12 Storage tank draining
3 Expansion vessel 13 Desuperheater
4 Pumps 14 Mounted filter
5 Loading unit 15 Cycle reversing valves
6 Safety valve 16 Liquid storage tank
7 Vent valve 17 Thermostatic valves
8 Coil 18 Dehydrator filter
9 Fans 19 Liquid separator
10 Electric Control Board 20 Electric resistance
NOTE:
The drawings shown are only
an example.
KEY:
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5.3. COOLING CIRCUITS,
HYDRAULIC ( ° - L )
VSIC
FM
VNR
P
RU
SA
RE
SD
VSA
VE SF
GR
RS
P
VNR
FL
BVT
PP BP
VSIC
RU
AP
PP
AP
PP
PP SC
SIW
BVT
QE
SUW
BP
TGP TGP
EQ EQ
VTVT
PP
IDL
VS
FD
RU
PP
IDL
VS
FD
RU
RU
BAT
VV
BAT
CP CP
VS Solenoid valve
IDL Liquid indicator
EQ Equaliser
BVT Temperature control valve bulb
SIW
Inlet water temperature probe
SUW Outlet water temperature probe
AP High pressure pressure switch
VFan
BAT Coil
RU Cock
FD Dehydrator filter
VT Thermostatic valve
SC Heat exchanger
PP Pressure point
TAP High pressure transducer
RU Cock
BP Low pressure switch
RS Drain cock
QE Electric Control Board
FM Water filter
VE Expansion vessel
- - - Electric cable
VaS Ball valve
VSA Water safety valve
TGP Pressing line gas circuit breaker
CP Compressor
FL Flow switch
SA Water tank
SF Venting
SD Anti-freeze probe
RE
300W electric resistance
VNR Non-return valve
P Pump
GR Filling unit
RU Cock
SD Anti-freeze probe
RE Electric resistance
VNR Non-return valve
P Pump
GR Filling unit
loading
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5.4. COOLING CIRCUITS,
HYDRAULIC ( H - HL )
VIC
VIC VIC VIC
BVT BVT
SEP SEP
AL AL
EQ EQ
VU
VU
VU
VU
FD
VS
VS VS
VT VT
IL
FD
VS
IL
BAT BAT
RCS RCS
PPPP
PP PP
VV
PP
TAP
AP
PP
RU
PP
RE
SD
SA
VSA
VE SF
GR
RS
TAP
AP
CP CP
FM
VNR VNR
FL
TGP TGP
VSIC
BP
CC
VU
QE
SIW
SC
SUW
VU VUVU
TBP
PP
VSIC
BP
TBP
PP
VS Solenoid valve
IDL Liquid indicator
EQ Equaliser
BVT Temperature control valve bulb
SIW
Inlet water temperature probe
SUW Outlet water temperature probe
AP High pressure pressure switch
TBP Low pressure transducer
FL Flow switch
VFan
BAT Coil
RU Cock
FD Dehydrator filter
VT Thermostatic valve
SC Heat exchanger
PP Pressure point
TAP High pressure transducer
VSIC Safety valve
BP Low pressure switch
RS Drain cock
SEP Liquid separator
QE Electric Control Board
FM Water filter
VE Expansion vessel
- - - Electric cable
VU One-way valve
AL Liquid storage tank
CP Compressor
VSA Water safety valve
TGP
Pressing line gas circuit breaker
SA Water tank
SF Venting
RCS Load/drain cock
SD Anti-freeze probe
RE
300W electric resistance
VNR Non-return valve
P Pump
GR Filling unit
RU Cock
SD Anti-freeze probe
RE Electric resistance
VNR Non-return valve
P Pump
GR Filling unit
VIC Cycle reversing valve
loading
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5.5. COOLING CIRCUIT
Compressors
Highly efficient hermetic scroll compressors on
anti-vibration mounts, activated by a 2-pole electric
motor with internal circuit breaker protection, sup-
plied as per standard with sump resistance.
The resistance is powered automatically when the
unit stops as long as the unit is live.
Air-side heat exchanger
High efficiency realised with copper pipes and alu-
minium louvers blocked by mechanical expansion
of the pipes.
Water-side heat exchanger
Plate type (aisi 316), insulated externally with
closed cell material to reduce heat loss. Equipped
as per standard with the anti-freeze electric re-
sistance.
Liquid separator
(for heat pump only)
Positioned on compressor intake for protection
against any return of refrigerant fluid, flooded
start-up and functioning in the presence of liq-
uids.
Liquid storage tank
(for heat pumps and total recovery only)
Compensates the difference in volume between
louvers coil and plate exchanger, withholding ex-
cess liquid.
Dehydrator filter
Mechanical dehydrator filter realised in ceramics
and hygroscopic material, able to withhold impu-
rities and any traces of humidity present in the
cooling circuit.
Liquid indicator
Used to check the refrigerant gas load and any
presence of humidity in the cooling circuit.
Thermostatic valve
The mechanical valve, with external equaliser po-
sitioned at evaporator outlet, modulates the flow
of gas to the evaporator, depending on the heat
load, in order to ensure a correct level of heating
of the intake gas.
Electronic valve (optional)
Liquid and pressing line cocks
(cooling versions only)
Allows interruption of the refrigerant in the case
of extraordinary maintenance.
Solenoid valve
The valve closes when the compressor switches
off, blocking the flow of refrigerant gas to the
evaporator.
By-pass solenoid valve
(heat pump only)
By-passes the thermostatic valve during the de-
frosting cycle.
Cycle reversing valve (heat pump only)
It reverses the flow of refrigerant on variation of
summer/winter mode and during de-frosting cycles.
One-way valve
Allows one-way flow of the refrigerant.
Desuperheater (on request only)
Plate type (AISI 316), insulated externally with
closed cell material to reduce heat loss.
Total recovery (on request only)
Plate type (AISI 316), insulated externally with
closed cell material to reduce heat loss.
5.6. FRAME AND FANS
Ventilation Unit
Helical type, balanced statically and dynamically.
The electric fans are protected electrically by
magnet circuit breakers and mechanically by
metal anti-intrusion grids, according to the IEC
EN 60335-2-40 Standard.
Larger fans (M)
Support frame
Made in hot galvanised sheet steel with suitable
thickness and painted with polyester powders
able to resist atmospheric agents through time.
5.7. HYDRAULIC COMPONENTS
Circulation pump
Depending on the features of the pump selected,
it offers a static pressure that is useful for beat-
ing system pressure drops. The possibility of a
reserve pump is also envisioned.
The reserve pump is managed by the circuit
board.
Flow switch (installed as per standard)
It checks that there is circulation of water. If
this is not the case, it blocks the unit
Water filter (installed as per standard)
This allows to block and eliminate any impurities
present in the hydraulic circuits. It contains a fil-
tering mesh with holes that do not exceed one
millimetre. It is indispensable in order to prevent
serious damage to the plate exchanger.
Storage tank
In sheet steel with capacity of 300 litres. In order
to reduce heat loss and eliminate the condensate
formation phenomenon, it is insulated using poly-
urethane material with a suitable thickness.
As per standard it has a 300W anti-freeze elec-
tric resistance (to -20°C external temperature-
tank water temperature 5°C) controlled by the
board using an anti-freeze probe inserted into
the tank.
Vent valve (all versions)
Automatic, mounted on the upper part of the
hydraulic plant; it discharges any air pockets
present in the same.
Filling unit
(versions with storage tank)
It is equipped with a manometer for the display of
system pressure.
Expansion vessel
(versions with storage tank)
with nitrogen pre-load membrane.
Hydraulic circuit safety valve
(only in versions with storage tank or with pump)
Calibrated at 6 Bar and with piped discharge,
which intervenes by discharging overpressure if
abnormal work pressures occur.
5.8. CONTROL AND SAFETY
COMPONENTS
Low pressure pressure switch (LP)
- Cooling only (L)
With fixed calibration, placed on low pressure
side of cooling circuit, it inhibits functioning of
compressor if abnormal work pressure occurs.
High pressure pressure switch (AP)
- Cooling only (L)
- Heat pump (HL)
With fixed calibration, placed on high pressure
side of cooling circuit, it inhibits functioning of
compressor if abnormal work pressure occurs.
Low pressure transducers (TP2)
- Cooling only (L) "accessory"
- Heat pump (HL) "as per standard"
Placed on high pressure side of cooling circuit,
it signals the work pressure to control board,
generating a pre-warning if abnormal pressure
occurs.
High pressure transducer (TP3)
- Cooling only (L) "accessory"
- Heat pump (HL) "as per standard"
Placed on high pressure side of cooling cir-
cuit, it signals the work pressure to control
board, generating a pre-warning if abnor-
mal pressure occurs.
Anti-freeze electric resistance
(installed as per standard)
Its functioning is controlled by the anti-freeze
probe positioned in the plate evaporator. Ac-
tivation takes place when the temperature
of the water is +3°C, while it is disconnected
with water temperature of +5°C. The dedi-
cated software, housed in the adjustment
board, manages the electric resistance.
Cooling circuit safety valve
Intervenes by discharging the overpressure
in the case of abnormal pressures.
- Calibrated at 45 bar on the HP branch
- Calibrated at 30 bar on the LP branch
(only for heat pump)
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11
5.9. ELECTRIC COMPONENTS
Electric Control Board
Contains the power section and the manage-
ment of controls and safety devices.
It is in compliance with the following Standards
IEC EN 61000-6-1
IEC EN 61000-6-3 (electromagnetic immuni-
ty and emission for residential environments).
IEC EN 61000-6-2
IEC EN 61000-6-4 (electromagnetic immuni-
ty and emission for industrial environments).
With the Directives regarding electromag-
netic compatibility EMC 89/336/CEE and
92/31/CEE and LVD 2006/95/CE
.
Door-lock isolating switch
The electric control board can be accessed
by removing the voltage. Act on the open-
ing lever of the control board itself. This
lever can be locked using one or more
padlocks during maintenance interventions
to prevent the machine being powered up
accidentally.
Control board
Allows the complete control of the appli-
ance. For a more in-depth description
please refer to the user manual.
Remote control panel
Allows to control the chiller at a distance.
Compressors magnet circuit breaker pro-
tection;
Fans magnet circuit breaker protection;
Auxiliary magnet circuit breaker protection;
Exhaust gas temperature control thermo-
stat
.
ELECTRONIC ADJUSTMENT
Microprocessor board
Made up from management and control
board and display board. Functions per-
formed:
• evaporator inlet water temperature
adjustment with thermostating up
to 4 steps and proportional control
- integral on fan speed (with DCPX
accessory).
• delayed start-up of compressors.
• compressors rotation sequence.
• compressors functioning hours count.
• start/stop.
• reset.
• alarms permanent memory.
• autostart after voltage drop.
• multi-language messages.
• functioning with local or remote control.
• machine status display:
compressors ON/OFF;
alarms summary.
• alarms management:
high pressure;
flow switch;
low pressure;
anti-freeze;
compressors overload;
fans overload;
pumps overload.
• display of the following parameters:
inlet water temperature;
outlet water temperature Storage
tank temperature. Outlet water tem-
perature; delta T;
high pressure; low pressure;
re-start stand-by time.
• alarms display.
• set settings:
a) without password:
set cooling;
total differential
b) with password:
set anti-freeze;
low pressure exclusion time;
display language;
access code.
For further information, please refer to
user manual.
6. ACCESSORIES
0280 0300 0330 0350 0500 0550 0600 0650 0700
AER485
This accessory allows the connection of the unit with BMS supervision systems with RS 485 electrical standard and MODBUS protocol.
°- ---•••••
L• ••••••••
H- ---•••••
HL •••••••••
VT ( 00-P1-P2-P3-P4 )
Rubber or spring anti-vibration mounts. Select the model using the compatibility table.
°- ---
13 13 13 13 13
L17 17 17 17
H- ---
HL 17 17 17 17
VT (01-02-03-04-05-06-07-08)
Rubber or spring anti-vibration mounts. Select the model using the compatibility table.
°- ---
10 10 10 10 10
L13 13 13 13
H- ---
HL 13 13 13 13
GP
Protects the external coil from blows and prevents access to the area below where the compressors and cooling circuit are
housed. Every kit includes two grids.
°- ---
2(x2) 2(x2) 2(x2) 2(x2) 2(x2)
L3 333
H- ---
HL 3333
PGS
Board to couple onto the unit circuit board. Allows to program two time periods per day (two switch-on/off cycles) and to have differ-
entiated programming for every day of the week.
°- --- •••••
L• ••••••••
H - --- •••••
HL • ••••••••
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12
0280 0300 0330 0350 0500 0550 0600 0650 0700
AERWEB30
The AERWEB device allows theremote control of a chiller from a common PCby means of a serial connection. By using
addi-tional modules the device allows control of thechiller by telephone network, using the AER-MODEM; accessory or
GSM network, usingthe AERMODEMGSM. The AERWEB can pilotup to 9 chillers, each of which must be equip-ped with
the AER485 or AER485P2 accessory.
°- --- •••••
L• ••••••••
H - --- •••••
HL • ••••••••
TP2
It allows to view the value of the compressor intake pressure on the microprocessor board display (one per circuit). Placed on the low
pressure side of the cooling circuit, it inhibits functioning of the compressor if abnormal work pressures occur.
°----
(x2) (x2) (x2) (x2) (x2)
L (x2) (x2) (x2) (x2)
H - ---
as per standard as per standard as per standard as per standard as per standard
HL
as per standard as per standard as per standard as per standard
TP3
It allows to view the value of the compressor flow pressure on the microprocessor board display (one per circuit). Placed on the high pres-
sure side of the cooling circuit, it inhibits functioning of the compressor if abnormal work pressures occur.
°----
as per standard as per standard as per standard as per standard as per standard
L (x2) (x2) (x2) (x2)
H - ---
HL
as per standard as per standard as per standard as per standard
RIF Current rephaser. Connected in parallel to the motor, it allows a reduction of the absorbed current. (It can only be installed
in the machine construction phase and so must be requested on ordering).
° - ---
52 52 53 53 53
L50505051
H - ---
HL 50 50 50 51
DRE It allows the reduction of peak power necessary for the machine during start-up phase (accessory applicable only in the factory).
°----
501 551 601 651 701
L 281 301 331 351
H - ---
HL 281 301 331 351
DCPX
This accessory allows correct functioning with external temperatures lower than 10 °C and to – 10 °C.
It is made up from an adjustment circuit board that varies the number of fan revs. on the basis of condensation pressure read by
the high pressure transducer, in order to keep it high enough for correct unit functioning.
It also allows correct functioning in heating mode with external temperatures exceeding 30°C and up to 42°C.
° - - - - 64 64 64 64 64
L
56565656
as per standard as per standard as per standard as per standard as per standard
H - - - - 64 64 64 64 64
HL 58 58 58 58
as per standard as per standard as per standard as per standard as per standard
DCPX
DCPX only for configurations with larger fans (M).
° - - - - 64 64 64 64 64
L60 60 60 61
as per standard as per standard as per standard as per standard as per standard
H---- DCPX - not necessary, fans already control their speed
HL 63 63 63 63
DUALCHILLER
Simplified control system for control, switch-on/off of two chillers, with Amec GR3 control, in the same plant as if they were the same unit.
°----
•••••
L•••••••••
H
- ---
•••••
HL •••••••••
MULTICHILLER
Control system for control, switch-on/off of the single chillers in a plant in where multiple units are installed in parallel, always ensuring
constant flow to the evaporators.
°----
•••••
L•••••••••
H
- ---
•••••
HL •••••••••
TRX1
The water accumulators with holes and supplementary electric heaters leave the factory with plastic protection caps. Before loading
the system, if the installation of an electric heater is not envisaged it is compulsory to replace the plastic caps with the special TRX1.
°•••••••••
L•••••••••
H•••••••••
HL •••••••••
PRM 1 FACTORY FITTED ACCESSORY. It is a manual pressure switch electrically wired in series with the existing automatic high
pressure switch on the compressor discharge pipe.
°•••••••••
L•••••••••
H•••••••••
HL •••••••••
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13
7. TECHNICAL DATA
COOLING 0280 0300 0330 0350 0500 0550 0600 0650 0700
Cooling capacity kW °----97103126137156
L5
3 63 68 81 87 93 113127144
Total input power kW ° - - - - 34,8 38,2 45,9 53,9 60,0
L20,3 22,6 26,1 28,4 38,5 42,5 50,9 57,6 64,8
Water flow rate l/h ° - - - - 16680 17720 21670 23560 26830
L9120 10840 11700 13930 14960 16000 19440 21840 24770
Total pressure drops kPa °----5359646174
L
514654554348515263
ENERGETIC INDEX
EER W/W ° - - - - 2,79 2,70 2,75 2,54 2,60
L 2,61 2,79 2,61 2,85 2,26 2,19 2,22 2,20 2,22
ESEER W/W °- - - - 3,43 3,32 3,87 3,58 3,67
L 3,16 3,37 3,15 3,45 3,40 3,30 3,83 3,56 3,65
ELECTRICAL DATA
Power supply A°400V-3N-50Hz
L
Absorbed current A °
----63678188100
L36 40 44 51 70 75 90 99 111
Maximum current A °
----
76 81 100 112 122
L46535863
Peak current A °
----
214 220 232 243 261
L 155 184 190 200
COMPRESSORS (SCROLL)
Number/circuit n°/n° °---- 3/2 3/2 4/2 4/2 4/2
L 2/2 2/2 2/2 2/2
FANS (AXIAL)
Quantity n° °---- 22222
L4446
Air flow rate m³/h °----34600 34600 34600 34600 33600
L 14200 14200 14200 20200 28400 28700 27700 29400 28600
Input power kW °----
2,5 2,5 2,5 2,5 2,5
L 0,6 0,6 0,6 0,9
Absorbed current A °---- 5,6 5,6 5,6 5,6 5,6
L 2,6 2,6 2,6 3,9
Useful static pressures [1] "M"
°----
50 50 50 50 50
L 50 50 50 50
EVAPORATORS (PLATE)
Quantity n° °- - - - 11111
L111111111
HYDRAULIC CONNECTIONS
Hydraulic circuit connec-
tions* (IN/OUT) Ø°----
2"1/2 2"1/2 2"1/2 2"1/2 2"1/2
L 2"1/2 2"1/2 2"1/2 2"1/2
HYDRAULIC CIRCUIT
Storage tank capacity l °---- 500 500 500 500 500
L 300 300 300 300
Storage tank anti-freeze
resistance W°----
300 300 300 300 300
L 300 300 300 300
LOW STATIC PRESSURE CIRCULATION PUMP
Input power KW °---- 1,5 1,5 1,5 1,5 1,85
L 1,1 1,1 1,1 1,1
Absorbed current A °---- 3,6 3,6 3,6 3,6 5,0
L 2,7 2,7 2,7 2,7
Useful static pressures KPa ° - - - - 123 111 91 83 91
L 104 106 96 89 141 130 117 103 117
7.1. TECHNICAL DATA FOR VERSIONS ( ° - L )
* The water connections are all ‘Victaulic’ type
[1] The static pressures available refer to the nominal air flow rate.
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14
0280 0300 0330 0350 0500 0550 0600 0650 0700
HIGH STATIC PRESSURE CIRCULATION PUMP
Input power KW °---- 1,85 1,85 3,0 3,0 3,0
L 1,5 1,5 1,5 1,5
Absorbed current A °---- 5,0 5,0 5,7 5,7 5,7
L 3,6 3,6 3,6 3,6
Useful static pressures KPa °----161150184178134
L 143 144 135 129 179 168 210 198 162
SOUND DATA
Sound power (1) dBA °----8282828383
L737374757777777878
Sound Pressure (2) dBA °----5050505151
L41 4142434545454646
DIMENSIONS
Height mm °---- 1875 1875 1875 1875 1875
L 1606 1606 1606 1606
Width mm °---- 110 0 110 0 110 0 110 0 110 0
L 1100 1100 110 0 1100
Depth mm °----2950 2950 2950 2950 2950
L 2450 2450 2450 2450 2950 2950 2950 2950 3950
Empty weight Kg °
----
868 872 968 983 1091
L 675 684 688 704
REFERENCE NOMINAL CONDITIONS
IN COOLING MODE
- Inlet water temperature 12 °C
- Outlet water temperature 7 °C
- External air temperature 35 °C
- ∆t 5°C
(1) SOUND POWER
Aermec determines sound power values in agreement with
the 9614-2 Standard, in compliance with that requested by
Eurovent certification.
(2) SOUND PRESSURE
Sound pressure measured in free field conditions with
reflective surface (directivity factor Q=2) at 10mt distance
from external surface of unit, in compliance with ISO 3744
regulations.
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15
7.2. TECHNICAL DATA FOR VERSIONS( H - HL )
COOLING 280 300 330 350 500 550 600 650 700
Cooling capacity kW H----9095115134145
HL 51 61 66 73 83 90 110 124 140
Total input power kW H - - - - 36,4 40,5 49,1 53,3 62,9
HL 20,1 22,5 26,2 31,0 39,7 42,9 51,8 58,3 65,6
Water flow rate l/h H - - - - 15480 16340 19780 23050 24940
HL 8770 10490 11350 12560 14280 15480 18920 21330 24080
Total pressure drops kPa H----4650535864
HL 47 43 51 45 39 45 49 50 60
HEATING
Heating capacity kW H---- 99 106 129 150 165
HL 58 68 75 82
Total input power kW H---- 33,2 36,0 43,1 48,0 55,1
HL 18,6 21,3 24,3 27,8
Water flow rate l/h H---- 17030 18230 22190 25800 28380
HL 9980 11700 12900 14100
Total pressure drops kPa H---- 55 62 67 73 83
HL 61,1 53,6 65,6 56,4
ENERGETIC INDEX
EER W/W H- - - - 2,47 2,35 2,34 2,51 2,31
HL 2,54 2,71 2,52 2,35 2,09 2,10 2,12 2,13 2,13
ESEER W/W H- - - - 3,43 3,32 3,87 3,58 3,67
HL 3,16 3,37 3,15 3,45 3,40 3,30 3,83 3,56 3,65
COP W/W H
----
2,98 2,94 2,99 3,13 2,99
HL 3,12 3,19 3,09 2,95
ELECTRICAL DATA
Power supply AH400V-3N-50Hz
HL
Absorbed current A H
----66/60 71/63 87/76 92/82 108/95
HL 36 /33 40 /38 44 / 41 56 /50 72/ 60 75/ 63 91/ 76 100/ 82 113/ 95
Maximum current A H
----
76 81 100 112 12 2
HL 46 53 58 63
Peak current A H
----
214 220 232 243 261
HL 155 184 190 200
COMPRESSORS (SCROLL)
Number/circuit n°/n° H---- 3/2 3/2 4/2 4/2 4/2
HL 2/2 2/2 2/2 2/2
FANS (AXIAL)
Quantity n° H---- 22222
HL4666
Air flow rate m³/h H - - - - 39400 39400 39400 37500 37500
HL 14000 20000 20000 20000 28400 28700 28700 27400 28100
Input power kW H----
3,5 3,5 3,5 3,5 3,5
HL 0,6 0,9 0,9 0,9
Absorbed current A H---- 7, 5 7, 5 7, 5 7, 5 7, 5
HL 2,6 3,9 3,9 3,9
Useful static pressures [1] "M" Pa H---- 70* 70* 70* 70* 70*
HL 50 50 50 50
EVAPORATORS (PLATE)
Quantity n° H---- 11111
HL1111
HYDRAULIC CONNECTIONS
Hydraulic circuit connections*
(IN/OUT) ØH----
2"1/2 2"1/2 2"1/2 2"1/2 2"1/2
HL 2"1/2 2"1/2 2"1/2 2"1/2
HYDRAULIC CIRCUIT
Storage tank capacity l H---- 500 500 500 500 500
HL 300 300 300 300
Storage tank anti-freeze
resistance WH----
300 300 300 300 300
HL 300 300 300 300
LOW STATIC PRESSURE CIRCULATION PUMP
Input power KW H---- 1,5 1,5 1,5 1,5 1,85
HL 1,1 1,1 1,1 1,1
Absorbed current A H---- 3,6 3,6 3,6 3,6 5,0
HL 2,7 2,7 2,7 2,7
Useful static pressures KPa H - - - - 136 127 113 89 115
HL 108 110 10 0 9 5 14 8 136 123 10 9 125
* The water connections are all ‘Victaulic’ type
[1] The static pressures available refer to the nominal air flow rate.
[*] As for the NRL0500-0700 the fans for the “M” version are inverter-type. The DCPX accessory is not meant fort his version as the fans are already equipped
with the fan speed regulation.
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16
280 300 330 350 500 550 600 650 700
HIGH STATIC PRESSURE CIRCULATION PUMP
Input power KW H---- 1,85 1,85 3,0 3,0 3,0
HL 1,5 1,5 1,5 1,5
Absorbed current A H---- 5,0 5,0 5,7 5,7 5,7
HL 3,6 3,6 3,6 3,6
Useful static pressures KPa H - - - - 174 165 206 184 160
HL 152 153 153 144 185 174 216 204 171
SOUND DATA
Sound power (1) dBA H- - - - 8282828383
HL 73 74 74 75 77 77 77 78 78
Sound Pressure (2) dBA H----5050505151
HL 41 42 42 43 45 45 45 46 46
DIMENSIONS
Height mm H---- 1875
HL 1606 1606 1606 1606
Width mm H---- 110 0
HL 1100 1100 1100 1100
Depth mm H---- 2950
HL 2450 2450 2450 2450
Empty weight Kg H---- 913 917 1016 113 0 114 2
HL 713 724 731 740
REFERENCE NOMINAL CONDITIONS
IN COOLING MODE
- Inlet water temperature 12 °C
- Outlet water temperature 7 °C
- External air temperature 35 °C
- ∆t 5°C
IN HEAT MODE
- Inlet water temperature 40 °C
- Outlet water temperature 45 °C
- External air temperature 7/6 °C
- ∆t5°C
(1) SOUND POWER
Aermec determines sound power values in agreement with
the 9614-2 Standard, in compliance with that requested by
Eurovent certification.
(2) SOUND PRESSURE
Sound pressure measured in free field conditions with
reflective surface (directivity factor Q=2) at 10mt distance
from external surface of unit, in compliance with ISO 3744
regulations.
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17
280 300 330 350 500 550 600 650 700
COOLING
Cooling capacity KW °----100106130141161
L 55 65 70 83 90 96 116 131 148
Total input power KW ° - - - - 35,1 38,5 46,3 54,4 60,5
L 20,5 22,8 26,3 28,7 38,8 42,9 51,4 58,1 65,4
ENERGETIC INDEX
EER W ° - - - - 2,85 2,75 2,80 2,59 2,65
L 2,67 2,85 2,66 2,91 2,31 2,23 2,27 2,25 2,27
DATI ELETTRICI RAFFREDDAMENTO
Power supply A°400V-3N-50Hz
L
Cooling absorbed current A°----63,6 67,6 81,7 88,8 100,9
L 36,3 40,4 44,4 51,5 60,8 75,2 90,7 99,9 112,0
Maximum current (FLA) A°----
76 81 100 112 12 2
L 46 53 58 63
Peak current (LRA) A°---- 214 220 232 243 261
L 155 184 190 200
FANS (AXIAL)
Quantity n° °---- 22222
L4446
SOUND DATA
Sound power (1) dBA ° - - - - 82 82 82 83 83
L73 73 74 75 77 77 77 78 78
Sound Pressure (2) dBA ° - - - - 50 50 50 51 51
L 41 41 42 43 45 45 45 46 46
DIMENSIONS
Height mm °----
1875 1875 1875 1875 1875
L 1606 1606 1606 1606
Width mm °----
110 0 110 0 110 0 110 0 110 0
L110 0 110 0 110 0 110 0
Depth mm °----
2950 2950 2950 2950 2950
L 2450 2450 2450 2450
Empty weight Kg °----
837 841 931 939 1047
L 655 660 664 677
7.3. TECHNICAL DATA FOR VERSIONS (C)
REFERENCE NOMINAL CONDITIONS
IN COOLING MODE
- External air temperature 35 °C
- Evaporation temperature 5°C
(1) SOUND POWER
Aermec determines sound power values in agreement with the 9614-2 Standard, in
compliance with that requested by Eurovent certification.
(2) SOUND PRESSURE
Sound pressure measured in free field conditions with reflective surface (directivity
factor Q=2) at 10mt distance from external surface of unit, in compliance with ISO 3744
regulations.
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18
-15
-10
-5
0
5
10
15
20
25
30
35
40
42
-5 0 5 10 15 18
-15
-10
-5
0
5
10
15
20
25
30
35
40
42
38
-6 -4 -2 0 2 4 6 8 10 12 14 15
8. OPERATIONAL LIMITS
8.1. COOLING MODE FUNCTIONING
8.3. MOTORCONDENSING FUNCTIONING
The units, in standard configuration,
are not suitable for installation in salty
environments. Maximum and minimum
limits for water flow rates at the ex-
changer are indicated by the curves in
the pressure drop diagrams.
For functioning limits, please refer
to the below diagrams, values for
∆t = 5°C.
NOTE:
In the cooling mode the unit can be
started up with ambient air at 46°C
and inlet water at 35°C
In the heating mode the unit can be
started up with ambient air at -15°C
and inlet water at 20°C
The unit can operate at these condi-
tions only for the time which is neces-
sary to achieve the right temperature
in the plant. To reduce this time it is
recommended to install a 3-way valve
that allows to bypass the water flow in
the plant until the achievement of the
conditions that allow the unit to work
within the proper operating limits
External air temperature d. b. °C
Temperature of the water produced °C
15
20
25
30
35
40
45
50
-15 -10 -5 0 5 10 15 20 25 30 35 40
8.2. HEATING MODE FUNCTIONING
External air temperature d. b. °C
Temperature of the water produced °C
External air temperature d. b. °C
Evaporation temperature °C
Standard functioning
Functioning with glycol
Functioning with glycol with
DCPX accessory
Standard functioning with
DCPX accessory
KEY:
NOTE: As for the versions with buffer tank (09-10) the operating limits in cooling
and heating mode are 3°C lower
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