AERMEC nrl R410A Technical Installation Maintenance Manual
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AERMEC nrl R410A Technical Installation Maintenance Manual

Chillers and air water heat pumps and motorcondensers with scroll compressors
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NRL
R410A
R410A
TECHNICAL INSTALLATION MAINTENANCE MANUAL
Chillers and air water heat pumps and motorcondensers with scroll compressors
°
STANDARD
L
COMPACT SILENCED
H
COMPACT HEAT PUMP
HL
SILENCED COMPACT HEAT PUMP
❄
87 KW ÷ 156 KW
❊
99 KW ÷ 165 KW
INRLPY.0609.4537905_02
❄
53 KW ÷ 81 KW
❊
58 KW ÷ 82 KW

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  • Page 1 R410A R410A TECHNICAL INSTALLATION MAINTENANCE MANUAL Chillers and air water heat pumps and motorcondensers with scroll compressors ° STANDARD COMPACT SILENCED COMPACT HEAT PUMP SILENCED COMPACT HEAT PUMP ❄ 53 KW ÷ 81 KW ❊ 58 KW ÷ 82 KW ❄...
  • Page 2 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.

  • Page 3: Table Of Contents

    INDEX Notes regarding the documentation ..........3 Calibration of control and safety parameters ......29 1. 1 . Use in compliance with destination ..........3 1.2. Preservation of the documentation ..........3 Dimensions ....................30 19. 1 . NRL 0280 - 0300 - 0330 - 0350 versions L - HL ....30 Fundamental safety regulations............3 19.2.
  • Page 4 37040 Bevilacqua (VR) Italy – Via Roma, 996 Tel. (+39) 0442 633111 Telefax 0442 93730 – (+39) 0442 93566 www.aermec.com - info@aermec.com SERIAL NUMBER EC DECLARATION OF CONFORMITY We, the undersigned, hereby declare under our own responsibility that the assembly in...

  • Page 5: Notes Regarding The Documentation

    USE IN COMPLIANCE WITH manual is not permitted. Consequently qualified and suitably prepared staff in DESTINATION AERMEC will not assume any respon- compliance with the national legislation AERMEC units are constructed accord- sibility for damage that may occur effective in the country of destination.

  • Page 6: Description Of The Unit

    DESCRIPTION OF THE UNIT − The appliances in the NRL series − NRLH does not envision the fol- 4.3. SILENCED MOTORCONDENSERS (CL) are units used for the production lowing configurations: of cold water for technological − YH (with water produced lower than 4 °C) The NRL-C motorcondensers do not systems.

  • Page 7: Configurator

    4.4. CONFIGURATOR 1,2,3 4,5,6,7 16, 1 7 ° ° ° ° ° ° ° ° Campo 1, 2 ,3 Code 4, 5, 6 Size 028, 030, 033, 035, 050, 055, 060, 065, 070 Compressor ° Standard compressor Thermostatic valve ° Standard mechanical thermostatic valve Low water temperature mechanical thermostatic valve (to -6°C) Electronic thermostatic valve also for low water temperature (to -6°C)

  • Page 8: Description Of The Components

    DESCRIPTION OF THE COMPONENTS 5. 1 . NRL 0280-0300-0330-0350 NOTE: The drawings shown are only an example. KEY: Plate heat exchanger Compressors Storage tank Storage tank draining Expansion vessel Desuperheater Pumps Mounted filter Loading unit Cycle reversing valves Safety valve Liquid storage tank Vent valve Thermostatic valves...

  • Page 9: Nrl 0500-0550-0600-0650-0700

    5.2. NRL 0500-0550-0600-0650-0700 NOTE: The drawings shown are only an example. KEY: Plate heat exchanger Compressors Storage tank Storage tank draining Expansion vessel Desuperheater Pumps Mounted filter Loading unit Cycle reversing valves Safety valve Liquid storage tank Vent valve Thermostatic valves Coil Dehydrator filter Fans...

  • Page 10: Cooling Circuits, Hydraulic (° - L)

    5.3. COOLING CIRCUITS, HYDRAULIC ( ° - L ) loading VSIC VSIC Electric Control Board Anti-freeze probe Solenoid valve Water filter Coil 300W electric resistance Liquid indicator Expansion vessel Cock Non-return valve Equaliser - - - Electric cable Dehydrator filter Pump Temperature control valve bulb Ball valve...

  • Page 11: Cooling Circuits, Hydraulic (H - Hl)

    5.4. COOLING CIRCUITS, HYDRAULIC ( H - HL ) loading VSIC VSIC VNR VNR Electric Control Board Anti-freeze probe Solenoid valve Water filter Coil 300W electric resistance Liquid indicator Cock Non-return valve Equaliser Expansion vessel Dehydrator filter Pump Temperature control valve bulb - - - Electric cable Thermostatic valve...

  • Page 12: Cooling Circuit

    5.5. COOLING CIRCUIT Filling unit Cycle reversing valve (heat pump only) (versions with storage tank) Compressors It reverses the flow of refrigerant on variation of It is equipped with a manometer for the display of Highly efficient hermetic scroll compressors on summer/winter mode and during de-frosting cycles.

  • Page 13: Electric Components

    5.9. ELECTRIC COMPONENTS Remote control panel alarms summary. • alarms management: Allows to control the chiller at a distance. high pressure; Electric Control Board Compressors magnet circuit breaker pro- Contains the power section and the manage- flow switch; tection; ment of controls and safety devices. low pressure;...
  • Page 14 0280 0300 0330 0350 0500 0550 0600 0650 0700 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 AERWEB30 GSM network, usingthe AERMODEMGSM.

  • Page 15: Technical Data

    TECHNICAL DATA 7. 1 . TECHNICAL DATA FOR VERSIONS ( ° - L ) COOLING 0280 0300 0330 0350 0500 0550 0600 0650 0700 ° Cooling capacity ° 34,8 38,2 45,9 53,9 60,0 Total input power 20,3 22,6 26, 1 28,4 38,5 42,5...
  • Page 16 (1) SOUND POWER (2) SOUND PRESSURE - Inlet water temperature 12 °C Aermec determines sound power values in agreement with Sound pressure measured in free field conditions with - Outlet water temperature 7 °C the 9614-2 Standard, in compliance with that requested by...

  • Page 17: Technical Data For Versions (H - Hl)

    7.2. TECHNICAL DATA FOR VERSIONS( H - HL ) COOLING Cooling capacity 36,4 40,5 49, 1 53,3 62,9 Total input power 20, 1 22,5 26,2 31,0 39,7 42,9 51,8 58,3 65,6 15480 16340 19780 23050 24940 Water flow rate 8770 10490 11350 12560...
  • Page 18 Empty weight 1016 1130 1142 REFERENCE NOMINAL CONDITIONS (1) SOUND POWER Aermec determines sound power values in agreement with IN HEAT MODE IN COOLING MODE the 9614-2 Standard, in compliance with that requested by 40 °C - Inlet water temperature 12 °C...

  • Page 19: Technical Data For Versions (C)

    ° Empty weight 1047 REFERENCE NOMINAL CONDITIONS (1) SOUND POWER Aermec determines sound power values in agreement with the 9614-2 Standard, in IN COOLING MODE compliance with that requested by Eurovent certification. - External air temperature 35 °C - Evaporation temperature 5°C...

  • Page 20: Operational Limits

    OPERATIONAL LIMITS 8. 1 . COOLING MODE 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.

  • Page 21: Corrective Coefficients

    CORRECTIVE COEFFICIENTS 9. 1 . COOLING CAPACITY AND COOLING CAPACITY CORRECTIVE COEFFICIENTS INPUT POWER 20°C 25°C 30°C − "STANDARD VERSIONS" 35°C − "HEAT PUMP VERSIONS IN COO- LING MODE" 40°C The cooling capacity efficiency and elec- 42°C trical input power in conditions differing from normal conditions are obtained by multiplying the nominal values (Pf, Pa) by the respective corrective co-...

  • Page 22: Heating Capacity And Input Power

    9.2. HEATING CAPACITY AND HEATING CAPACITY CORRECTIVE CO-EFFICIENTS INPUT POWER 35°C − "HEAT PUMP VERSIONS" 40°C 45°C 50°C The heating capacity efficiency and elec- trical input power in conditions differing 1, 1 from normal conditions are obtained by multiplying the nominal values (Pt, Pa) by the respective coefficient correcti- ves (Ct, Ca).

  • Page 23: Ethylene Glycol Solution

    10. ETHYLENE GLYCOL SOLUTION − The correction factors of cooling FcGDpF (a) capacity and input power take into 2.20 FcGDpF (b) 2. 1 0 account the presence of glycol and 2.00 diverse evaporation temperature. FcGDpF (c) 1.90 − The pressure drop correction fac- FcGDpF (d) 1.80 tor considers the different flow rate...

  • Page 24: Pressure Drops

    11. PRESSURE DROPS 11. 1 . TOTAL PRESSURE DROPS TOTAL PRESSURE DROPS ( ° - L ) Standard cooling only NRL ( ° - L) and standard heat pump (H - HL). 650-700 NOTE: The pressure drops and useful static 500-550 pressures are calculated in cooling 300-330...

  • Page 25: Storage Tank

    12. STORAGE TANK The following tables highlight the princi- 12.2. ple features of hydraulic circuit compo- Hydraulic height H [m] ≤ 12.25 nents, whilst the graph on the following Calibration of the expansion vessel page shows relative static pressures. l (1) Water content reference value 2.

  • Page 26: Capacity Control

    13. CAPACITY CONTROL ( * ) Cooling capacity % Levels of power Versions 1° 2° 3° 4° NRL0280 NRL0300 NRL0330 NRL0350 NRL0500 NRL0550 NRL0600 NRL0650 NRL0700 ( * ) Input power % Levels of power Versions 1° 2° 3° 4° NRL0280 NRL0300 NRL0330...

  • Page 27: Desuperheater

    14. DESUPERHEATER The heating capacity that can be obtai- DESUPERHEATER CORRECTIVE CO-EFFICIENTS ned from the desuperheater is found 3.00 by multiplying the nominal value (Pd) shown in figure 14. 1 . 1 , by a relative co- 2.50 efficient (Cd). The following diagrams allow to obtain corrective co-efficients to use for chil- 2.00...

  • Page 28: Total Recovery

    15. TOTAL RECOVERY In the case of functioning with total RECOVERED HEATING CAPACITY CORRECTIVE CO-EFFICIENTS heat recovery, machine performan- ce does not depend on the external air temperature, but on that of the 35°C hot water produced: the electric input 40°C power and the recovery heating capa- 45°C...

  • Page 29: Dimensionement Cooling Lines Version (C)

    16. DIMENSIONEMENT COOLING LINES VERSION (C) COOLING LINES R410A R410A refrigerant refrigerant Intake line f [mm] Liquid line f [mm] Line per metre of per metre of Model length [m] line [g/m] line [g/m] 0-10 15,88 15,88 NRL0280C 10-20 15,88 15,88 20-30 15,88...

  • Page 30: Sound Data

    17. SOUND DATA Sound power Total sound levels Octave band [Hz] Aermec determines sound power values Pressure. 1000 2000 4000 8000 Pow. in agreement with the 9614-2 Standard, dB(A) dB(A) dB(A) Sound potential for centre of band [dB] frequency (A)

  • Page 31: Calibration Of Control And Safety Parameters

    18. CALIBRATION OF CONTROL AND SAFETY PARAMETERS CONTROL PARAMETERS MIN. -10°C Inlet water temperature in cooling functioning mode. 20°C Set Cooling MAX. 7.0°C DEFAULT MIN. 30°C Inlet water temperature in heating functioning mode. Set Heating MAX. 50°C DEFAULT 50°C -15°C MIN.

  • Page 32: Dimensions

    19. DIMENSIONS 19. 1 . NRL 0280 - 0300 - 0330 - 0350 VERSIONS L - HL MOD. VERSION A (mm) B (mm) C (mm) 0280 L - HL 1100 2450 1606 0300 L - HL 1100 2450 1606 0330 L - HL 1100 2450...

  • Page 33: Nrl 0500 - 0550 - 0600 - 0650 - 0700 Versions ° - L - H - Hl

    19.4. NRL 0500 - 0550 - 0600 - 0650 - 0700 VERSIONS ° - L - H - HL MOD. VERSION A (mm) B (mm) C (mm) 0500 ° - L - H - HL 1100 2950 1875 0550 ° - L - H - HL 1100 2950 1875...

  • Page 34: (Empty Weight) Version (L - Hl)

    19.7. PERCENTAGE OF WIEGHT DISTRIBUTION ON SUPPORTS (EMPTY WEIGHT) VERSION (L - HL) PERCENTAGE OF WEIGHT DISTRIBUTION ON BARYCENTRE TYPE WEIGHT SUPPORTS (%) NRL0280L 1.022 23,8% 26,4% 23,6% 26,2% NRL0280L 02 - 04 1. 1 36 21,2% 23,4% 26,3% 29, 1 % NRL0280L 01 - 03 1.

  • Page 35: Percentage Of Weight Distribution On Supports

    19.8. PERCENTAGE OF WEIGHT DISTRIBUTION ON SUPPORTS (MACHINE WORKING) VERSION (L - HL) PERCENTAGE OF WEIGHT DISTRIBUTION ON BARYCENTRE TYPE WEIGHT SUPPORTS (%) NRL0280L 1.030 23,9% 25,8% 24,2% 26, 1 % NRL0280L 02 - 04 1133 1.246 18,9% 20,3% 29,2% 31,5% NRL0280L 01 - 03...

  • Page 36: Percentage Of Wieght Distribution On Supports

    19.9. PERCENTAGE OF WIEGHT DISTRIBUTION ON SUPPORTS (EMPTY WEIGHT) VERSION ( ° ) PERCENTAGE OF WEIGHT DISTRIBUTION ON BARYCENTRE TYPE WEIGHT SUPPORTS (%) NRL0500 1.238 30,8% 27,2% 22,3% 19,7% NRL0500 02 - 04 1032 1.379 28,0% 25,2% 24,6% 22,2% NRL0500 01 - 03 1015 1.355...

  • Page 37: Percentage Of Wieght Distribution On Supports

    19. 1 1. PERCENTAGE OF WIEGHT DISTRIBUTION ON SUPPORTS (EMPTY WEIGHT) VERSION (H) PERCENTAGE OF WEIGHT DISTRIBUTION ON BARYCENTRE TYPE WEIGHT SUPPORTS (%) NRL0500H 1.210 31,2% 27,8% 21,7% 19,3% NRL0500H 02 - 04 1077 1.349 28,5% 25,8% 24,0% 21,7% NRL0500H 01 - 03 1060 1.326...

  • Page 38: Safety Warnings And Installation Regulations

    FULLY AND PERFORM SAFETY tions are carried out. destination AERMEC will not CONTROLS IN ORDER TO REDUCE assume any responsibility for dam- ANY DANGER TO A MINIMUM. All Danger!

  • Page 39: Hydraulic Circuits

    22. HYDRAULIC CIRCUITS 22. 1 . HYDRAULIC CIRCUIT INSIDE NRL "00" (without storage tank and without pump) The hydraulic circuit is made up from: − Plate heat exchanger − Mounted filter − Flow switch − Water inlet/outlet probes (SIW- SUW). −...

  • Page 40: Hydraulic Circuit Inside Nrl "01-02-03-04-05-06-07-08

    22.3. HYDRAULIC CIRCUIT INSIDE NRL "01-02-03-04-05-06-07-08" −The hydraulic circuit is made up from: − − Storage tank − Loading unit − Vent valve − Safety valve − Expansion vessel − Pump − Plate heat exchanger − Mounted filter − Filter drain −...

  • Page 41: Filter Maintenance

    NOTES: flow switch on to the flow rate values − Expansion vessel (if not supplied The presence of a filter is mandatory; requested by the system, OTHERWISE with the machine). REMOVAL VOIDS THE GUARANTEE. THE WARRANTY WILL BECOME VOID. − Shut-off cocks. It should be kept clean and therefore −...

  • Page 42: Position Of Hydraulic Connections

    24. POSITION OF HYDRAULIC CONNECTIONS NRL 0280 - 0300 - 0330 - 0350 - 0500 - 0550 - 0600 - 0650 - 0700 Key: A Return system versions with pump B Basic return system versions C At the storage tank and basic system versions Desuperheater inlet (Ø...

  • Page 43: Position Of Hydraulic Connections Motorcondensing Version

    24. 1 . POSITION OF HYDRAULIC CONNECTIONS MOTORCONDENSING VERSION NRL 0280 - 0300 - 0330 - 0350 NRL 0500 - 0550 - 0600 - 0650 - 0700 Key: G Liquid line (C1) H Gas line (C1) Liquid line (C2) L Gas line (C2) Key: C1: Cooling circuit (1) C2: Cooling circuit (2)

  • Page 44: Electrical Connections

    25. ELECTRICAL CONNECTIONS All the electrical opera- The features of the electri- For the installation re- It is mandatory to ver- tions must be carried cal lines and of the related quirements refer only ify that the machine's out by STAFF IN POS- components must be de- to the wiring diagram watertight integrity be-...

  • Page 45: Gr3" Control Board

    25.3. "GR3" CONTROL BOARD Digital inputs Not used Display DIP SWITCH Analogue inputs DCP analogue outputs Not used 24Vac power supply Remote panel 24Vac power supply Digital inputs Clean contact alarms summary DIP SWITCH 230V digital outputs Digital inputs 230V power supply digital outputs ESP2 ESP1...

  • Page 46: Connection To The Electric Power Supply Mains

    25.4. CONNECTION TO THE ELEC- TRIC POWER SUPPLY MAINS − Make sure that the electric line to The figures below show the various parts used to make panel opening easy which you are making the connection is and the various line connections. not live.

  • Page 47: Electric Connections

    25.5. ELECTRIC CONNECTIONS Hole for electrical power supply Hole for electrical power supply (available on the right or left) (available on the right or left) 26. COMMISSIONING 26. 1 . PRELIMINARY OPERATIONS OFF (OFF BY KEYB on lower side of 26.

  • Page 48: Commissioning

    Remember that free commissioning is in the exchanger can freeze, causing envisioned by the local AERMEC after- pressor intake with the temperature irreparable damage to the exchanger, sales service for the units in this series...

  • Page 49: Maintenance

    27. MAINTENANCE the unit. This makes it easy to organise • Electric controls NOTE All routine and special maintenance the work appropriately and facilitates − Check the condition of the electri- operations must be carried out exclu- troubleshooting on the machine. cal wires and their insulation.

  • Page 50: Improper Use

    29. IMPROPER USE 29. 1 . IMPORTANT SAFETY The appliance is designed and construc- INFORMATION ted to guarantee the maximum safety ATTENTION in its immediate vicinity (IP24), as well Following extraordinary maintenance The machine must not exceed the work on the cooling circuit involving the as to resist atmospheric agents.
  • Page 51 Inhalation: Irregular heart beat (arrhythmia). Ingestion: No specific risk. Toxicological information Skin contact: Skin contact with evaporating liquids can cause freezing of the tissues. Slight irritation for the skin. Contact with the eyes: Slight irritation for the eye. FIRE-FIGHTING MEASURES Not inflammable ASTM D-56-82;...
  • Page 52 Contains fluorinated greenhouse gases covered by the Kyoto Protocol R410A (Global warming potential 1980) Contiene gases fluorados de efecto invernadero regulados por el Protocolo de Kioto R410A (Potencial de calentamiento atmosférico 1980) Enthält vom Kyoto-Protokoll erfasste fluorierte Treibhausgase R410A (Treibhauspotenzial 1980) Contient des gaz à...
  • Page 56 Telefax 0442 93730–(+39) 0442 93566 papier recyclé www.aermec.com - info@aermec.com recycled papier The technical data in the following documentation are not binding. Aermec reserves the right to make all the modifications considered necessary for improving the product at any time.

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