AERMEC NRB 0800-3600 User manual

22.04 – 4139181_04
Translation of Original instructions
www.aermec.com
Technical manual
EN
 AIRWATER CHILLER
Cooling capacity 217 ÷ 1049 kW
NRB 0800-3600

Dear Customer,
Thank you for wanting to learn about a product Aermec. This product is the result
of many years of experience and in-depth engineering research, and it is built
using top quality materials and advanced technologies.
The manual you are about to read is meant to present the product and help you
select the unit that best meets the needs of your system.
However, please note that for a more accurate selection, you can also use the
Magellano selection program, available on our website.
Aermec Aermec, always attentive to the continuous changes in the market and
its regulations, reserves the right to make all the changes deemed necessary for
improving the product, including technical data.
Thank you again.
AERMEC S.p.A.

CERTIFICATIONS
COMPANY CERTIFICATIONS
SAFETY CERTIFICATIONS
This marking indicates that this product should not be disposed with other household wastes throughout the EU. To prevent possible harm to the envi-
ronment or human health from uncontrolled disposal of Waste Electrical and Electronic Equipment (WEEE), please return the device using appropriate
collection systems, or contact the retailer where the product was purchased. Please contact your local authority for further details. Illegal dumping of
the product by the user entails the application of administrative sanctions provided by law.
All specications are subject to change without prior notice. Although every eort has been made to ensure accuracy, Aermec shall not be held liable for any errors or
omissions.

22.04  4139181_04 5
AERMEC S.p.A.
Via Roma, 996 - 37040 Bevilacqua (VR) - Italy
Phone [phone]
Fax [phone]
www.aermec.com - [email protected]om
MODEL
SERIAL NUMBER
DAT E
EC DECLARATION OF CONFORMITY
We, the undersigned, hereby declare under our own responsibility that the assembly in question, dened as follows:
Name: NRB
Type: Air-water chiller
Models: NRB_1411_CO, NRB 0800 - 3600 EE50
to which this declaration refers, complies with all the provisions related to the following directives:
Machinery Directive 2006/42/EC
Erp Directive 2009/125/CE
RoHS Directive on the restriction of the use of certain hazardous substances in EEE: 2011/65/UE
PED Directive regarding pressurised devices: 2014/68/UE
Electromagnetic Compatibility Directive EMCD: 2014/30/UE
The above-mentioned declaration complies with the harmonised European standards:
UNI EN ISO 12100: 2010
UNI EN 378-2: 2017
CEI EN IEC 61000-6-4: 2020
CEI EN IEC 61000-6-2: 2019
UNI EN 12735-1: 2020
CEI EN 60204-1: 2018
This declaration of conformity has been released under the exclusive responsibility of the manufacturer.
The person authorised to draw up the technical le is Luca Martin via Roma 996, 37040 Bevilacqua (VR) Italy..
The unit complies with the project data indicated in the technical le in the paragraph Denition of the Assembly, is in agreement with Directive 2014/68/EU and satises the
Total Guarantee procedure (form H) with certicate no. 06/270-QT33664 Rev.14 issued by the notied body no. 1131 CEC via Pisacane 46 Legnano (MI) - Italia.
The list of critical components relevant to the above factory number, in accordance with the provisions of Directive 2014/68/EU, is provided together with this Declaration of
Conformity (doc.“List of components for Declaration of Conformity”).
We also declare that, at the time this preloaded equipment was placed on the European market by Aermec S.p.A. (which imports or manufactures in the Union), the hydro-
uorocarbons contained therein are considered in the unit system of the Union referred to in Chapter IV of EU Regulation 517/2014 as they were placed on the market by a
manufacturer or importer of hydrouorocarbons to which Article 15 of EU Regulation 517/2014 applies.
Signed for and on behalf of: AERMEC S.p.A.
Bevilacqua (VR),
Marketing manager
Luigi Zucchi
NRB 0800-3600

6 22.04  4139181_04
AERMEC S.p.A.
Via Roma, 996 - 37040 Bevilacqua (VR) - Italy
Phone [phone]
Fax [phone]
www.aermec.com - [email protected]om
MODEL
SERIAL NUMBER
DAT E
NRB 0800-3600 C
We, the undersigned, hereby declare under our own responsibility that the assembly in question, dened as follows:
Name: NRB
Type:
Models: NRB_1411_EL
to which this declaration refers, complies with all the provisions related to the following directives:
Machinery Directive 2006/42/EC
The relevant technical documentation is compiled in accordance with part B of Annex VII; this documentation, or part of it, will be transmitted by mail, in response to a rea-
soned request by the national authorities.
The partly completed machinery must not be put into service until the nal machinery into which it is to be incorporated has been declared in conformity with the provisions
of Directive 2006/42/EC.
Signed for and on behalf of: AERMEC S.p.A.
Bevilacqua (VR),
Marketing manager
Luigi Zucchi
EC DECLARATION OF INCORPORATION

22.04  4139181_04 7
TABLE OF CONTENTS
1. Product description .........................................................................p.9
Acoustic eciency.................................................................................p.9
Maximum adaptability.........................................................................p.9
Extended operating range..................................................................p.9
Control .......................................................................................................p.9
Version with desuperheater or total recovery.............................p.9
Dual-circuit unit......................................................................................p.9
Aluminium microchannel coils .........................................................p.9
Electronic expansion valve.................................................................p.9
2. Congurator....................................................................................... p.10
3. Unit components description.................................................. p.11
Refrigerant circuit................................................................................ p.11
Hydraulic circuit................................................................................... p.11
Hydraulic circuit (versions with hydronic kit)............................ p.11
Structure and fans............................................................................... p.11
Control and safety components .................................................... p.11
Electrical control and power panel............................................... p.11
4. Main hydraulic circuits ................................................................. p.13
Without hydronic kit .......................................................................... p.13
With pumps........................................................................................... p.14
With pumps and storage tank........................................................ p.15
With desuperheater............................................................................ p.16
With total recovery ............................................................................. p.17
5. Main cooling refrigerant layouts............................................ p.18
NRB 0800 ÷ 1600 - valve °................................................................. p.18
NRB 0800 ÷ 1600 - valve ° - desuperheater D ........................... p.19
NRB 0800 ÷ 1600 - valve ° - total recovery T.............................. p.20
NRB 1805 ÷ 3600 - valve X / NRB 0800 ÷ 1600 - valve X
optional .................................................................................................. p.21
NRB 1805 ÷ 3600 - valve X - desuperheater D / NRB
0800 ÷ 1600 - valve X optional - desuperheater D.................. p.22
NRB 1805 ÷ 3600 - valve X - total recovery T / NRB 0800
÷ 1600 - optional valve X - total recovery T ............................... p.23
6. Accessories.......................................................................................... p.24
Factory tted accessories................................................................. p.24
Accessories compatibility................................................................. p.24
7. Selection criteria of the heat exchangers
according to the place of installation of the unit.......... p.26
Sea coast environments.................................................................... p.26
Industrial environments ................................................................... p.26
Mix of seaside and industrial environments ............................. p.26
Urban environments.......................................................................... p.26
Rural environments............................................................................ p.26
Additional tips...................................................................................... p.26
8. Basic principles on microchannel coil corrosion .......... p.27
Other risk factors for corrosion....................................................... p.27
9. Cleaning micro-channel coil..................................................... p.27
10. Performance specications....................................................... p.28
NRB 0800-3600..................................................................................... p.28
NRB 0800-3600 with desuperheater............................................ p.29
NRB 0800-3600 with total recovery.............................................. p.31
11. Energy data......................................................................................... p.33
Energy indices (Reg. 2016/2281 EU)............................................. p.33
Energy data (Global Catalog).......................................................... p.34
12. General technical data ................................................................. p.35
Fans data ................................................................................................ p.36
Electric data........................................................................................... p.37
Dimensions............................................................................................ p.38
Weights................................................................................................... p.38
13. Weights................................................................................................. p.45
Desuperheater weight ...................................................................... p.45
Coil weight............................................................................................. p.45
Fans weights ......................................................................................... p.45
14. Minimum technical spaces........................................................ p.46
Single installation................................................................................ p.46
Multiple installation ........................................................................... p.48
15. Operating limits ............................................................................... p.49
Version °.................................................................................................. p.49
Version L ................................................................................................. p.50
Versions A - U........................................................................................ p.51
Versions E - N ........................................................................................ p.52
16. Pressure drops................................................................................... p.54
Service side - without hydronic kit (00) - heat
exchanger only..................................................................................... p.54
Service side - without hydronic (00) - heat exchanger
with lter installed.............................................................................. p.55
Service side - with hydronic kit PA-PJ - DA-DJ (heat
exchanger + lter + pipes)............................................................... p.56
Service side - with hydronic kit AA-AJ - BA-BJ (heat
exchanger + lter + pipes + water accumulation).................. p.57
Desuperheater ..................................................................................... p.58
Total recovery ....................................................................................... p.59
17. Pumps static pressure................................................................... p.60
PA÷PI / AA÷AI....................................................................................... p.60
DA÷DI / BA÷BI...................................................................................... p.60
Single hydronic kits’ data.................................................................. p.61
18. System water content................................................................... p.63
Minimum system water content.................................................... p.63
Maximum system water content................................................... p.63
Expansion vessel setting .................................................................. p.64
19. Correction factors ........................................................................... p.65
Corrective factors for Average water temperatures
dierent from nominal values........................................................ p.65

8 22.04  4139181_04
Fouling: deposit corrective factors [K*m²]/[W] ........................ p.65
20. Glycol...................................................................................................... p.65
Ethylene glycol..................................................................................... p.65
Propylene glycol.................................................................................. p.65
21. Sound data.......................................................................................... p.66

22.04  4139181_04 922.04  4139181_04 9
1 PRODUCT DESCRIPTION
Air-cooled outdoor chiller designed to meet air conditioning needs in residential/
commercial complexes or industrial applications.
They are outdoor units with axial fan scroll compressors, microchannel batteries
and plate exchangers.
In the unit with desuperheater, it is also possible to produce free-hot water.
The base, the structure and the panels are made of galvanized steel treated with
polyester paint RAL 9003.
ACOUSTIC EFFICIENCY
This product range does not consider the energy class as the only selection param-
eter. Chillers can be chosen between dierent noise levels that do not aect the
energy class but maintain the best energy eciency status.
The dierent versions have been designed to identify the unit according to the in-
tended use of the system.
The NRB range excludes any compromise in technological choices, as eciency and
silence can coexist perfectly.
MAXIMUM ADAPTABILITY
To obtain a solution that allows you to save money and to facilitate installation.
These units can be congured with an integrated hydronic system.
The kit contains the main hydraulic components, and is available in various con-
gurations with a single pump or a standby pump and with various heads. (see
congurator)
EXTENDED OPERATING RANGE
This range can work at full load with outdoor temperature up to + 50°C. This occurs
in the high eciency versions and also, for example, in versions with silent oper-
ation. Therefore, their natural location is in urban centres, where environmental
requirements are strictly related to noise.
Furthermore, versions A-E-U-N can produce water cooled to -10°C.
CONTROL
The controller with liquid crystal display is supplied as per standard with all the
units. It has a multilingual user interface, which is available also in remote version
(accessory) to be connected to the unit with serial connection.
The presence of an internal clock allows you to program the operation in time pe-
riods in order to improve the system eciency and reduce consumption during
periods of non-use.
This option (Night Mode) is perfect for night operation, since it guarantees greater
acoustic comfort in the evenings, and a high eciency in the time of greater load.
Night Mode for standard versions is mandatory DCPX accessory (stand-
ard on all low noise versions) or "J" inverter fan.
Systems consisting of two chillers allow the unit to be adjusted via (Master/Slave),
supplied as per standard. In case of several chillers through the Multichiller_EVO.
The supervision is possible thanks to dierent options, with proprietary devices or
by integrating other systems via ModBus, Bacnet, LonWorks etc. protocols.
VERSION WITH DESUPERHEATER OR TOTAL RECOVERY
Cooler complete with a desuperheater / total recovery section.
In this conguration a coolant/water heat exchanger is added on the gas ow line.
The exchanger is set i series before the condenser and is appropriately sized to
guarantee the recovery of all or part of the heat produced, for the free production
of hot water at a medium-high temperature for domestic or other uses.
Each exchanger is protected by an anti-freeze resistance.
DUALCIRCUIT UNIT
Unit with 2 refrigerant circuits designed to provide maximum eciency at full load,
ensuring high eciency at partial loads also and ensuring continuity in case one of
the circuits stops.
ALUMINIUM MICROCHANNEL COILS
The microchannel condensing aluminum coils ensure high levels of eciency, re-
duced quantities of refrigerant and lower unit weight. The treatment "O" available
as congurator it ensures high resistance to corrosion even in the most aggressive
environments.
ELECTRONIC EXPANSION VALVE
The possibility to use electronic expansion valve, oers signicant benets, espe-
cially when the chiller is working with partial loads, increasing the energy eciency
of the unit.
It is standard in all sizes from 1805 to 3600.

10 22.04  4139181_0410 22.04  4139181_04
2 CONFIGURATOR
Field Description
1,2,3 NRB
4,5,6,7 Size 0800, 0900, 1000, 1100, 1200, 1400, 1600, 1805, 2006, 2206, 2406, 2600,
2800, 3000, 3200, 3400, 3600
8 Operating eld
° Standard mechanic thermostatic valve (1)
X Electronic thermostatic expansion valve (1)
Y Low temperature mechanic thermostatic valve (2)
Z Low temperature electronic thermostatic valve (2)
9 Model
° Cooling only
C Motocondensing unit (3)
10 Heat recovery
° Without heat recovery
D With desuperheater (4)
T With total recovery (5)
11 Version
° Standard
A High eciency
E Silenced high eciency
L Standard silenced
N Silenced very high eciency
U Very high eciency
12 Coils
° Aluminium microchannel
I Copper-aluminium
O Coated aluminium microchannel
R Copper-copper
S Tinned copper
V Copper-painted alumimium
13 Fans
° Standard
J Inverter
M Oversized
14 Power supply
° 400V ~ 3 50Hz with magnet circuit breakers
15,16 Integrated hydronic kit
Without hydronic kit
00 Without hydronic kit
Kit with n° 1 pump
PA Pump A
PB Pump B
PC Pump C
PD Pump D
PE Pump E
PF Pump F
PG Pump G
PH Pump H
Field Description
PI Pump I
PJ Pump J (6)
Pump n° 1 pump + stand-by pump
DA Pump A + stand-by pump (7)
DB Pump B + stand-by pump (7)
DC Pump C + stand-by pump (7)
DD Pump D + stand-by pump (7)
DE Pump E + stand-by pump (7)
DF Pump F + stand-by pump (7)
DG Pump G + stand-by pump (7)
DH Pump H + stand-by pump (7)
DI Pump I + stand-by pump (7)
DJ Pump J + stand-by pump (8)
Kit with storage tank and n° 1 pump
AA Storage tank and pump A
AB Storage tank and pump B
AC Storage tank and pump C
AD Storage tank and pump D
AE Storage tank and pump E
AF Storage tank and pump F
AG Storage tank and pump G
AH Storage tank and pump H
AI Storage tank and pump I
AJ Storage tank and pump J (6)
Kit with storage tank and n° 1 pump + stand-by pump
BA Storage tank with pump A + stand-by pump (7)
BB Storage tank with pump B + stand-by pump (7)
BC Storage tank with pump C + stand-by pump (7)
BD Storage tank with pump D + stand-by pump (7)
BE Storage tank with pump E + stand-by pump (7)
BF Storage tank with pump F + stand-by pump (7)
BG Storage tank with pump G + stand-by pump (7)
BH Storage tank with pump H + stand-by pump (7)
BI Storage tank with pump I + stand-by pump (7)
BJ Storage tank with pump J + stand-by pump (8)
(1) Water produced from 4 °C ÷ 18 °C
(2) Processed water from 4°C to -8°C for the ° - L versions, and from 4°C to -10°C for A - E - U - N versions
(3) Condensing units "C" are not compatible with theY/X/Z/T/D option
(4) The temperature of the water in the heat exchanger inlet must never drop below 35°C.
(5) None of the hydronic kits (from PA to BJ) are compatible with the following sizes and with versions with
heat recovery T: 0800 - 0900 - 1000 - 1100 version °; 0800 - 0900 version A; 0800 - 0900 version L. None of
the hydronic kits with pump(s) and storage tank (from AA to BJ) are compatible with all the sizes and with
versions with heat recoveryT
(6) For all congurations including pump J please contact the factory.
(7) None of the hydronic kits with twin pump (from DA to DJ and from BA to BJ) are compatible for the following
sizes and versions with desuperheater D: 1805 versions °- L-A, 2006-2206 version °.
(8) For all combinations with pump J, please contact our head oce. None of the hydronic kits with twin pump
(from DA to DJ and from BA to BJ) are compatible for the following sizes and versions with desuperheater D:
1805 versions °-L-A, 2006-2206 version °.

22.04  4139181_04 1122.04  4139181_04 11
3 UNIT COMPONENTS DESCRIPTION
REFRIGERANT CIRCUIT
Compressors
Compressori ermetici di tipo scroll ad alta ecienza (montati su supporti elastici
antivibranti), azionati da un motore elettrico a due poli con protezione termica in-
terna.
Crankcase heaters as standard, automatically activated when the unit stops, as long
as power is maintained to the unit.
Microchannel coils
The full range uses aluminium microchannel coils, ensuring very high levels of ef-
ciency.
This allows using less refrigerant compared to traditional copper coils.
System side heat exchanger
Brazed plate heat exchanger in stainless steel. It is externally insulated with closed
cell neoprene anti-condensation material.
When the unit is not functioning, it's protected against the formation of ice by an
electric heater.
Filter drier
Hermetic-mechanical made of hygroscopic material, able to withhold impurities
and any traces of humidity present in the cooling circuit.
Mechanic thermostatic valve
The mechanical type valve, with external equaliser located at the evaporator outlet,
modulates the ow of refrigerant into the evaporator based on the load and en-
sures the correct superheat of the suction gas.
Electronic thermostatic expansion valve
Compared with a mechanical thermostatic valve, the electronic one oers better
overheating control so the evaporator is used more eciently in all conditions,
thereby boosting machine output.
Its use in comfort dedicated applications allows to make substantial benets espe-
cially in the presence of varying loads, because it allows you to maintain the maxi-
mum eciency with any external air temperature.
In industrial applications, where there is often a need to make temperature changes
in a wide range of environmental conditions, the use of the electronic valve is ideal
because it avoids the need for continuous calibration, adapting the system to dif-
ferent load conditions and hence making it independent.
Sizes from 1805 ÷ 3600 come standard with the electronic thermostatic valve (X).
Solenoid valves
The valves close when the compressor switches o, blocking the ow of refrigerant
gas to the evaporator, recovery and the coil.
Only with the mechanical thermostatic valve
Sight glass
It is used to verify that the expansion system is powered correctly and the presence
of humidity in the cooling circuit.
HYDRAULIC CIRCUIT
Water lter
Equipped with steel ltering mesh, it prevents the heat-exchanger from clogging
system side due to any impurity inside the circuit.
Installed in versions with the hydronic kit, it is supplied for version 00.
Recovery side heat exchanger (optional)
Brazed plate heat exchanger in stainless steel. It is externally insulated with closed
cell neoprene anti-condensation material.
When the unit is not functioning, it's protected against the formation of ice by an
electric heater.
HYDRAULIC CIRCUIT VERSIONS WITH HYDRONIC KIT
Pump
They provide useful static pressure to the system, excluding the unit pressure drops.
The pumps are programmed in rotation with automatic exchange if the running
pump fails
Expansion vessel
Membrane type precharged with nitrogen.
Pressure relief valve
Calibrated at 6 Bar and drain pipe, it activates by discharging overpressure if abnor-
mal pressure occurs.
Air drain valve
Mounted at the highest level of the hydraulic system. The air vent is used for the
release of any air pockets from the hydraulic circuit.
Drain valve
System buer tank
In steel to reduce heat gain and avoid the formation of condensation.
Insulated with polyurethane material of adequate thickness.
It reduces the number of compressor starts and stabilises the water temperature
delivered to the system.
It is equipped with antifreeze electrical resistances to ensure minimum tempe-ra-
ture of stored water of +5°, with minimum outdoor temperature of -20°C. The re-
sistance is activated by a water temperature probe placed inside the unit’s hydronic
circuit.
Available only on request the tank in stainless steel AISI 304.
STRUCTURE AND FANS
Structure
Supporting structure for outdoor installation, in hot-dipped galvanized sheet steel,
with RAL 9003 polyester powder coating.
Designed to ensure the maximum access for service and maintenance.
Standard fan unit
Equipped with accident-prevention net, it consists of axial fans and 6-pole motor
with external rotor and protection rating IP54.
Moreover, the motor is equipped with inner thermal protection with automatic
reset.
Inverter fans
Continuous modulation of revolution speed according to the condensation pres-
sure, highly ecient motor for low energy consumption.
CONTROL AND SAFETY COMPONENTS
High pressure switch
With xed calibration, placed on the high pressure side of the cooling circuit, it in-
hibits the operation of the compressor if abnormal work pressure occurs.
Manual reset
Low pressure transducer
Placed on low pressure side of cooling circuit, it signals the work pressure to the
control board, generating a pre-warning in case abnormal pressure occurs.
High pressure transducer
Placed on the high pressure side of the cooling circuit, signals the work pressure to
control board, generating a pre-warning in case abnormal pressure occurs.
Condensation control temperature
Device for electronically controlling the condensation, for functioning even at low
temperatures, which allows adjusting the air ow rate to actual system demand
with resulting advantages in terms of consumption reduction.
Standard in the silenced versions or with the desuperheater; an accessory for all
other versions.
ELECTRICAL CONTROL AND POWER PANEL
Complete with:
— door interlocked isolator
— Magnet circuit breakers and contactors for compressors and fans
— external electrical panel
— electronic controller
— All numbered cables

12 22.04  4139181_0412 22.04  4139181_04
Door interlocked isolator
Access to the electrical panel is by operating the handle of the door interlocked
isolator which removes power to the unit.
To avoid accidentally powering up the unit during maintenance the isolator is tted
with a locking mechanism.
Controller keypad
Allows complete control of the unit.
For further information refer to the user manual.
Electronic controller
The microprocessor controls features cutting edge functions and proprietary ad-
justments.
The control panel allows the user to consult and manage the unit operating param-
eters thanks to a purposely designed multi-language graphic interface.
The multi-level menu can be used to control:
— The system temperature for cooling the environments or industrial processes.
The dierent temperatures are managed automatically according to the unit
work conditions and requirements.
— Management and alarm log to have always a prompt diagnosis of the unit op-
eration.
— Creation of operation time periods required for ecient programming
— A self-adaptive logic is used to defrost. This logic allows you to adjust the num-
ber of defrosts in order to increase eciency.
— Systems consisting of two chillers allow the unit to be adjusted via (Master/
Slave), supplied as per standard. In case of several chillers through the Mul-
tichiller_EVO. The supervision is possible thanks to dierent options, with pro-
prietary devices or by integrating other systems via ModBus, Bacnet, LonWorks
etc. protocols.
A specic keyboard for wall-mounting installation (PGD1 accessory) allows the re-
mote control of all the functions.
Note: For further information, refer to the user manual.
Aernet
AerBacP
AerLonP
Aer485P1
[Master]
pCO5
[Slave]
pCO5
Ethernet
Bacnet
VMF
BMS ModBus
Multichiller
LonWorks
WebServer
pLan
Serial 1
Serial 2

22.04  4139181_04 1322.04  4139181_04 13
4 MAIN HYDRAULIC CIRCUITS
WITHOUT HYDRONIC KIT
Water lter: Installation in the immediate vicinity of the heat exchanger is man-
datory,.
Do not ll up the hydraulic system by glycol near the suction of the pump. High
concentration of glycol could stuck the pump. Do not use the pump to mix water
and glycol.
Components as standard
1 Plate heat exchanger
2 Antifreeze electric heater
3 Water temperature sensors (IN/OUT)
4 Water lter (as standard)
Components not provided and responsibility of the installer
5 Anti-vibration joints
6 Air drain valve
7 Flow switch (MANDATORY)
8 Pump
9 Drain valve
10 Pressure gauge
11 Flow shut-o valves
12 Expansion vessel
13 Pressure relief valve
14 Loading unit
15 Storage tank
4
21
1
3
3
6
6
7
9
9
5
5
11 11
11
851
61
41
2
01
31
Water characteristics
System: Chiller with plate heat exchanger
PH 7,5 - 9
Total hardness 4,5 - 8,5 °dH
Electric conductivity 10-500 S /cm
Temperature < 65 °C
Oxygen content < 0,1 ppm
Max. glycol amount 50 %
Phosphates (PO) < 2ppm
Manganese (Mn) < 0,05 ppm
Iron (Fe) < 0,2 ppm
Alkalinity (HCO) 70 - 300 ppm
Chloride ions (Cl-) < 50 ppm
Free chlorine < 0,5 ppm
Sulphate ions (SO) < 50 ppm
Sulphide ion (S) None
Ammonium ions (NH) None
Silica (SiO) < 30 ppm
It is of fundamental importance to keep the oxygen concentration in
the water under control, especially in open vessel systems. This type
of system, in fact, is very sensitive to the phenomenon of extra-oxy-
genation of the water (an event that can be encouraged by the incor-
rect positioning of some components). This phenomenon can trigger
corrosion processes and subsequent drilling of the heat exchanger
and pipes.

14 22.04  4139181_0414 22.04  4139181_04
WITH PUMPS
Do not ll up the hydraulic system by glycol near the suction of the pump. High
concentration of glycol could stuck the pump. Do not use the pump to mix water
and glycol.
Components as standard
1 Plate heat exchanger
2 Antifreeze electric heater
3 Water temperature sensors (IN/OUT)
4 Air drain valve
5 Flow shut-o valves
6 Water lter
7 Pump
8 Clapet valve
9 Expansion vessel
10 Pressure relief valve
11 Drain valve
Components not provided and responsibility of the installer
12 Anti-vibration joints
13 Expansion vessel
14 Air drain valve
15 Pressure relief valve
16 Storage tank
17 Antifreeze electric heater
18 Drain valve
19 Pressure gauge
20 Loading unit
21 Flow shut-o valves
22 Flow switch (MANDATORY)
6
1
3
3
4
11
111
55
12
13 14
12
7
2
9
10
15
16
17
18
19 20
21
21
22
7
8
7
DA-DJ
PA-PJ
Water characteristics
System: Chiller with plate heat exchanger
PH 7,5 - 9
Total hardness 4,5 - 8,5 °dH
Electric conductivity 10-500 S /cm
Temperature < 65 °C
Oxygen content < 0,1 ppm
Max. glycol amount 50 %
Phosphates (PO) < 2ppm
Manganese (Mn) < 0,05 ppm
Iron (Fe) < 0,2 ppm
Alkalinity (HCO) 70 - 300 ppm
Chloride ions (Cl-) < 50 ppm
Free chlorine < 0,5 ppm
Sulphate ions (SO) < 50 ppm
Sulphide ion (S) None
Ammonium ions (NH) None
Silica (SiO) < 30 ppm
It is of fundamental importance to keep the oxygen concentration in
the water under control, especially in open vessel systems. This type
of system, in fact, is very sensitive to the phenomenon of extra-oxy-
genation of the water (an event that can be encouraged by the incor-
rect positioning of some components). This phenomenon can trigger
corrosion processes and subsequent drilling of the heat exchanger
and pipes.
Clapet valve
1 Clapet valve
1
The unit with double pump circuit does not have one-way valves. If you
choose to install two units in parallel or in cascade, it is recommended to pro-
vide one-way valves for the correct operation of the unit.

22.04  4139181_04 1522.04  4139181_04 15
WITH PUMPS AND STORAGE TANK
Do not ll up the hydraulic system by glycol near the suction of the pump. High
concentration of glycol could stuck the pump. Do not use the pump to mix water
and glycol.
Components as standard
1 Plate heat exchanger
2 Antifreeze electric heater
3 Water temperature sensors (IN/OUT)
4 Air drain valve
5 Flow shut-o valves
6 Water lter
7 Pump
8 Clapet valve
9 Drain valve
10 Expansion vessel
11 Pressure relief valve
12 Storage tank
Components not provided and responsibility of the installer
13 Anti-vibration joints
14 Pressure gauge
15 Loading unit
16 Flow shut-o valves
17 Flow switch (MANDATORY)
6
10
1
3
3
4
4
9
9
55
7
2
2
9
7
8
7
11
12
13
14 15
16
16
13
17
BA-BJ
AA-AJ
Water characteristics
System: Chiller with plate heat exchanger
PH 7,5 - 9
Total hardness 4,5 - 8,5 °dH
Electric conductivity 10-500 S /cm
Temperature < 65 °C
Oxygen content < 0,1 ppm
Max. glycol amount 50 %
Phosphates (PO) < 2ppm
Manganese (Mn) < 0,05 ppm
Iron (Fe) < 0,2 ppm
Alkalinity (HCO) 70 - 300 ppm
Chloride ions (Cl-) < 50 ppm
Free chlorine < 0,5 ppm
Sulphate ions (SO) < 50 ppm
Sulphide ion (S) None
Ammonium ions (NH) None
Silica (SiO) < 30 ppm
It is of fundamental importance to keep the oxygen concentration in
the water under control, especially in open vessel systems. This type
of system, in fact, is very sensitive to the phenomenon of extra-oxy-
genation of the water (an event that can be encouraged by the incor-
rect positioning of some components). This phenomenon can trigger
corrosion processes and subsequent drilling of the heat exchanger
and pipes.
Clapet valve
1 Clapet valve
1
The unit with double pump circuit does not have one-way valves. If you
choose to install two units in parallel or in cascade, it is recommended to pro-
vide one-way valves for the correct operation of the unit.

16 22.04  4139181_0416 22.04  4139181_04
WITH DESUPERHEATER
Do not ll up the hydraulic system by glycol near the suction of the pump. High
concentration of glycol could stuck the pump. Do not use the pump to mix water
and glycol.
Components as standard
1 Plate heat exchanger
2 Plate heat exchanger (desuperheater)
3 Antifreeze electric heater
4 Water temperature sensors (IN/OUT)
5 Water lter (as standard)
Components not provided and responsibility of
the installer
6 Water temperature sensors (IN/OUT)
7 Anti-vibration joints
8 Air drain valve
9 Pump
10 Drain valve
11 Pressure gauge
12 Flow shut-o valves
13 Expansion vessel
14 Pressure relief valve
15 Loading unit
16 Storage tank
17 Antifreeze electric heater
2
6
6
7
7
8
8
12 12
12 12
11
9
13 14
15
13
16
10
5
31
1
4
4
8
8
7
01
01
7
7
21 21
21
961
71
51
3
11
41
Water characteristics
System: Chiller with plate heat exchanger
PH 7,5 - 9
Total hardness 4,5 - 8,5 °dH
Electric conductivity 10-500 S /cm
Temperature < 65 °C
Oxygen content < 0,1 ppm
Max. glycol amount 50 %
Phosphates (PO) < 2ppm
Manganese (Mn) < 0,05 ppm
Iron (Fe) < 0,2 ppm
Alkalinity (HCO) 70 - 300 ppm
Chloride ions (Cl-) < 50 ppm
Free chlorine < 0,5 ppm
Sulphate ions (SO) < 50 ppm
Sulphide ion (S) None
Ammonium ions (NH) None
Silica (SiO) < 30 ppm
It is of fundamental importance to keep the oxygen concentration in
the water under control, especially in open vessel systems. This type
of system, in fact, is very sensitive to the phenomenon of extra-oxy-
genation of the water (an event that can be encouraged by the incor-
rect positioning of some components). This phenomenon can trigger
corrosion processes and subsequent drilling of the heat exchanger
and pipes.

22.04  4139181_04 1722.04  4139181_04 17
WITH TOTAL RECOVERY
Do not ll up the hydraulic system by glycol near the suction of the pump. High
concentration of glycol could stuck the pump. Do not use the pump to mix water
and glycol.
Components as standard
1 Plate heat exchanger
2 Plate heat exchanger (total recovery)
3 Antifreeze electric heater
4 Water temperature sensors (IN/OUT)
5 Water lter (as standard)
Components not provided and responsibility of
the installer
6 Anti-vibration joints
7 Air drain valve
8 Pump
9 Drain valve
10 Pressure gauge
11 Flow shut-o valves
12 Expansion vessel
13 Pressure relief valve
14 Loading unit
15 Storage tank
16 Antifreeze electric heater
2
4
4
6
6
7
7
11 11
11 11
11
8
12 13
14
13
15
9
5
21
1
4
4
7
7
7
9
9
6
6
11 11
11
851
61
41
3
01
31
Water characteristics
System: Chiller with plate heat exchanger
PH 7,5 - 9
Total hardness 4,5 - 8,5 °dH
Electric conductivity 10-500 S /cm
Temperature < 65 °C
Oxygen content < 0,1 ppm
Max. glycol amount 50 %
Phosphates (PO) < 2ppm
Manganese (Mn) < 0,05 ppm
Iron (Fe) < 0,2 ppm
Alkalinity (HCO) 70 - 300 ppm
Chloride ions (Cl-) < 50 ppm
Free chlorine < 0,5 ppm
Sulphate ions (SO) < 50 ppm
Sulphide ion (S) None
Ammonium ions (NH) None
Silica (SiO) < 30 ppm
It is of fundamental importance to keep the oxygen concentration in
the water under control, especially in open vessel systems. This type
of system, in fact, is very sensitive to the phenomenon of extra-oxy-
genation of the water (an event that can be encouraged by the incor-
rect positioning of some components). This phenomenon can trigger
corrosion processes and subsequent drilling of the heat exchanger
and pipes.

18 22.04  4139181_04
5 MAIN COOLING REFRIGERANT LAYOUTS
NRB 0800 ÷ 1600  VALVE °
1 Charging connection 2 Condenser 3 Isolation valve 4 High pressure switch 5 High pressure transducer
6 Pressure relief valve 7 Discharge gas temperature probe 8 Compressor 9 Low pressure transducer 10 Mechanic thermostatic valve
11 Evaporator 12 Sight glass 13 Solenoid valve for bleeding 14 Filter drier
11
22
33
4 4
55
66
7 7
8888
99
10
11
10
12
13
14
3
12
13
14
3
88

22.04  4139181_04 19
NRB 0800 ÷ 1600  VALVE °  DESUPERHEATER D
1 Charging connection 2 Condenser 3 Isolation valve 4 Pressure relief valve 5 Desuperheater 6 High pressure transducer
7 High pressure switch 8 Discharge gas temperature probe 9 Compressor 10 Low pressure transducer 11 Evaporator 12 Hot gas injection valve
13 Mechanic thermostatic valve 14 Sight glass 15 Solenoid valve for bleeding 16 Filter drier
1 1
2
3 3
3
3 3
4
5 5
6
7
6
7
88
9 9 9 9 9 9
10 10
11
12 12
13 13
14 15
16
3
14
15
16
2

20 22.04  4139181_04
NRB 0800 ÷ 1600  VALVE °  TOTAL RECOVERY T
1 Liquid accumulator 2 Solenoid valve for bleeding 3 One-way valve 4 Total recovery 5 Condenser 6 Charging connection
7 Isolation valve 8 4-way cycle inversion valve 9 High pressure transducer 10 High pressure switch 11 Discharge gas temperature probe 12 Compressor
13 Low pressure transducer 14 Hot gas injection valve 15 Evaporator 16 Mechanic thermostatic valve 17 Sight glass 18 Filter drier
1 1
22
22
33
5 5
55
33
33
33
33
44
5
66
77
7
7
77
77
88
9
10
9
10
11 11
12 12 12 12 12 12
13 13
14 14
16 16
17
2
18
17
2
18
15
5