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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