Related Manuals for AERMEC NRL 280-75
Summary of Contents for AERMEC NRL 280-75
- Page 1 60Hz 60Hz TECHNICAL MANUAL CHILLER NRL 280-750 REVERSIBLE HEAT PUMP • EXTERNAL UNIT • HIGH EFFICENCY • HOT WATER PRODUCING UP TO 131°F / 55°C • POWER SUPPLY 60Hz 13_01. 5641300_00...
- Page 3 AERMEC S.p.A AERMEC S.p.A. reserves the right at all times to make any modification for the improvement of its product and is not obliged to add these modification to machines of previous manufacture that have already been delivered or are being built.
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Page 4: Table Of Contents
System side total pressure drop heat pump in hea ng mode ..24 Useful heads ................25 Ethylene glycol solu ons .............29 Expansion tank calibra on ............30 Minimum water content .............30 Part load ..................31 Sound data .................32 Control and safety parameters calibra on ........33 18.1. Thermomagne c ................34 Aermec 13_01. 5641300_00... - Page 5 NRL 0280-0750 60Hz Aermec 13_01. 5641300_00...
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Page 6: Descrip On And Choce Of Unit
EXCHANGER PLATE TOTAL RECOVERY EXCHANGER PLATE DESUPERHEATER AIR SIDE EXCHANGE COMPRESSOR DEHYDRATOR FILTER HIGH PRESSURE SWITCH LOW PRESSURE SWITCH HIGH PRESSURE TRANSDUCER LOW PRESSURE TRANSDUCER LIQUID INDICATOR LIQUID TANK ONE WAY VALVES LIQUID SEPARATOR CYCLE REVERSE VALVE Aermec 13_01. 5641300_00... -
Page 7: Confi Gurator
P4 Single high head pump and reserve pump Confi gura ons NOT permi ed: YD / YT / YH HT / HC TC / DC / Ven la on "I" mandatory vers.E sizes from 050 to 075 (units cooling only and heat pump) Aermec 13_01. 5641300_00... -
Page 8: Cooling Circuit
NRL 0280-0750 60Hz COOLING CIRCUIT 4.1. NRL COOLING CIRCUIT ONLY COOLING BHE EXCHANGER PLATE CN AIR SIDE EXCHANGE CP COMPRESSOR F DEHYDRATOR FILTER HPS HIGH PRESSURE SWITCH HPT HIGH PRESSURE TRANSDUCER IDL LIQUID INDICATOR LPT LOW PRESSURE TRANSDUCER Aermec 13_01. 5641300_00... -
Page 9: Nrl Cooling Circuit Heat Pump
NRL 0280-0750 60Hz 4.2. NRL COOLING CIRCUIT HEAT PUMP LIQUID TANK EXCHANGER PLATE AIR SIDE EXCHANGE COMPRESSOR ONE WAY VALVES DEHYDRATOR FILTER HIGH PRESSURE SWITCH HIGH PRESSURE TRANSDUCER LIQUID INDICATOR LOW PRESSURE TRANSDUCER LIQUID SEPARATOR CYCLE INVERSION VALVE Aermec 13_01. 5641300_00... -
Page 10: Descrip On Of Components
60204-1/IEC 204-1, complete with: heat load, in order to ensure a correct heating level of the intake gas. DRAIN TAP - door lock main isolating switch, - fuses and contactors for compressors and fans, Aermec 13_01. 5641300_00... - Page 11 Water differential flow switch. Alarm on the ΔT − Alarms with automatic reset with limited number of restarts before blocking. − ON/OFF external contact − Change season from external contact For further information please refer to user manual. Aermec 13_01. 5641300_00...
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Page 12: Accessories
6.2. ELECTRICAL ACCESORIES Simplified control system to switch on and off, and command, two chillers (using Aermec GR3 command) in a single system, as if they were a single unit. AERWEB300 Group of anti-vibration, to be installed under the base. -
Page 13: Technical Data
0,043l/s per kW Load 100% air 35°C / 95°F External temperature 35°C / 95°F Load 75% air 26,7°C / 80°F Load 50% air 18,3°C / 65°F data refered no pump version Load 25% air 12,8°C / 55°F Aermec 13_01. 5641300_00... - Page 14 0,043l/s per kW Load 100% air 35°C / 95°F External temperature 35°C / 95°F Load 75% air 26,7°C / 80°F Load 50% air 18,3°C / 65°F data refered no pump version Load 25% air 12,8°C / 55°F Aermec 13_01. 5641300_00...
- Page 15 4,36 6,54 6,54 6,54 6,54 SOUND DATA dB(A) Sound pressure dB(A) dB(A) Sound power dB(A) CHARGES the reported data can be amended any time aermec considers it necessary 12,3 12,5 16,6 18,0 18,0 23,8 24,0 14,55 18,96 18,74 27,12 27,56...
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Page 16: Technical Data "Ha He" Version
COOLING (AHRI CONDITIONS) Load 75% air 26,7°C / 80°F Outlet water temperature 6,7°C / 44,06°F Load 50% air 18,3°C / 65°F Flow rate 0,043l/s per kW Load 25% air 12,8°C / 55°F External temperature 35°C / 95°F Aermec 13_01. 5641300_00... - Page 17 COOLING (AHRI CONDITIONS) Load 75% air 26,7°C / 80°F Outlet water temperature 6,7°C / 44,06°F Load 50% air 18,3°C / 65°F Flow rate 0,043l/s per kW Load 25% air 12,8°C / 55°F External temperature 35°C / 95°F Aermec 13_01. 5641300_00...
- Page 18 COOLING (AHRI CONDITIONS) Load 75% air 26,7°C / 80°F Outlet water temperature 6,7°C / 44,06°F Load 50% air 18,3°C / 65°F Flow rate 0,043l/s per kW Load 25% air 12,8°C / 55°F External temperature 35°C / 95°F Aermec 13_01. 5641300_00...
- Page 19 Sound pressure dB(A) dB(A) Sound power dB(A) HEATING FUNCTIONING Sound pressure dB(A) Sound power dB(A) CHARGE THE DATA REPORTED CAN BE CHANGED AT ANY TIME IF DEEMED NECESSARY FROM AERMEC 12,1 15,0 15,0 17,5 17,0 17,5 26,0 26,0 26,0 44,0...
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Page 20: Opera On Limit
To reduce the me of this limits are achieved. 35°C/95°F. In winter mode the unit can be started opera on, it is recommended to install a three- with external air -15°C/5°F and water inlet way valve that allows bypassing water from the Aermec 13_01. 5641300_00... -
Page 21: Input Power And Cooling Capacity "Standard Version"/ "Heat Pump Version In Cooling Mode
In order to consider 25°C / 77°F exchanger dirtying, use the relative dirtying factors 20°C / 68°F Tab.10.4.1. °C 21.2 39.2 28.4 35.6 39.2 42.8 44.1 46.4 53.6 57.2 60.8 64.4 °F Water produced Aermec 13_01. 5641300_00... -
Page 22: For ∆T Diff Erent To The Nominal
FOULING FACTOR [K*M2]/[KW] 0,018 0,05 clean tubes with deposit factor=1. Cooling capacity correction factors 0,987 0,967 For different deposit factor values, multiply Input power correction factors 0,987 0,967 the data in the performance tables by the co- efficients given. Aermec 13_01. 5641300_00... -
Page 23: Pressure Drop
NRL 650 NRL 700 NRL 750 10000 20000 30000 40000 50000 60000 WATER FLOW Average water temperature (°F / °C) 73,4/23 82,4/ 28 91,4/33 100,4/38 109,4/43 118,4/48 127,4/53 136,4/58 Coefficients 1,04 1,03 1,02 1,01 1,00 0,99 0,98 0,97 Aermec 13_01. 5641300_00... -
Page 24: Useful Heads
12.2. ONLY COOLING LOW PUMP USEFUL HEADS NRL 280 750 60HZ / 575V p.s.i. NRL 280 NRL 300 NRL 330 NRL 350 NRL 500 NRL 550 NRL 600 NRL 650 NRL 700 NRL 750 5000 10000 15000 20000 25000 30000 35000 40000 WATER FLOW Aermec 13_01. 5641300_00... - Page 25 12.4. ONLY COOLING HIGH PUMP USEFUL HEADS NRL 280 750 60HZ / 575V p.s.i. NRL 280 NRL 300 NRL 330 NRL 350 NRL 500 NRL 550 NRL 600 NRL 650 NRL 700 NRL 750 5000 10000 15000 20000 25000 30000 35000 40000 45000 WATER FLOW Aermec 13_01. 5641300_00...
- Page 26 12.6. HEAT PUMP LOW PUMP USEFUL HEADS NRL 280 750 60HZ / 575V p.s.i. NRL 280 NRL 300 NRL 330 NRL 350 NRL 500 NRL 550 NRL 600 NRL 650 NRL 700 NRL 750 5000 10000 15000 20000 25000 30000 35000 40000 WATER FLOW Aermec 13_01. 5641300_00...
- Page 27 12.8. HEAT PUMP HIGH PUMP USEFUL HEADS NRL 280 750 60HZ / 575V p.s.i. NRL 280 NRL 300 NRL 330 NRL 350 NRL 500 NRL 550 NRL 600 NRL 650 NRL 700 NRL 750 5000 10000 15000 20000 25000 30000 35000 40000 45000 WATER FLOW Aermec 13_01. 5641300_00...
- Page 28 Initial rates for “EXTERNAL AIR TEMPERATURE” and “TEMPERATURE OF PRODUCED WATER”, are not directly related, therefore it is not possible to refer to the curve of one of these rates to obtain correspon- ding point on the curve of the other rate. Aermec 13_01. 5641300_00...
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Page 29: Expansion Tank Calibra On
It is recommended to design systems with high water content (minimum recommended values shown in table), to limit: 1. 1. The hourly number of inversions between functioning modes. 2. 2. Decrease in water temperature during winter defrost cycles. Aermec 13_01. 5641300_00... -
Page 30: Part Load
POWER INPUT % 0280 0300 0330 0350 0500 0550 0600 0650 0700 0750 HEATING CAPACITY % 0280 0300 0330 0350 0500 0550 0600 0650 0700 0750 POWER INPUT % 0280 0300 0330 0350 0500 0550 0600 0650 0700 0750 Aermec 13_01. 5641300_00... -
Page 31: Sound Data
NRL 0280-0750 60Hz SOUND DATA Sound power Total sound levels Octave band[Hz] Aermec determines the sound power value on Pressure 1000 2000 4000 8000 Pot. [dB (A)] [dB (A)] the basis of measurements taken in accordance dB(A) Sound power by central band frequency [dB (A)] 10 m with standard 9614-2. -
Page 32: Control And Safety Parameters Calibra On
BP only heat pump version psi / bar 435 / 30 435 / 30 435 / 30 435 / 30 435 / 30 435 / 30 435 / 30 435 / 30 435 / 30 435 / 30 Aermec 13_01. 5641300_00... - Page 33 3,0 A CP1A 23,0 A NRL 0550 460V 2 x 4,2 A 26,0 A HIGH PUMP 5,2 A 19,0 A LOW PUMP 1,9 A CP1A 19,0 A 575V 2 x 3,7 A 23,0 A HIGH PUMP 3,5 A Aermec 13_01. 5641300_00...
- Page 34 7,2 A CP2A 26,0 A 27,5 A LOW PUMP 4,6 A 3 x 3,7 A "NRL only cooling" CP1A 23,0 A 575V 27,5 A 4 x 3,7 A "NRL heat pump" HIGH PUMP 5,8 A CP2A 23,0 A Aermec 13_01. 5641300_00...
- Page 35 NRL 0280-0750 60Hz Aermec 13_01. 5641300_00...
- Page 36 37040 Bevilacqua (VR) Italy–Via Roma, 996 Tel. (+39) 0442 633111 Telefax 0442 93730–(+39) 0442 93566 www.aermec.com - info@aermec.com The technical data on the following documents are not binding. Aermec reserves the right to make any changes at any time deemed necessary for product improvement.
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