Related Manuals for AERMEC NRL F Series
Summary of Contents for AERMEC NRL F Series
- Page 1 60Hz FREE COOLING INSTALLATION MANUAL NRL free cooling CHILLER • EXTERNAL UNIT 280-750 • HIGH EFFICENCY • POWER SUPPLY 60Hz 14_09. 5641250_01...
- 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
NRL free cooling 0280-0750 60Hz INDEX Description and choce of unit ............6 Check list ..................7 Principle of operation schemes ............8 3.1. Production of cold water only the system ........8 3.2. Cold water production and the system recovery (desuperheater) ... 9 Operating limits ................10 4.1. Design specifications ............... 10 Selection and place of installation ..........11 5.1. Minimum technical ................. 11 Positioning ..................11 Dimension .................. - Page 5 NRL free cooling 0280-0750 60Hz 14_09. 5641250_01...
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Page 6: Description And Choce Of Unit
NRL free cooling 0280-0750 60Hz DESCRIPTION AND CHOCE OF UNIT Standards and Directives respected on The NRL Free-cooling series appliances are water Models: designing and constructing the unit: chillers equipped with an external air cooling capacity NRL "F" free-cooling recovery system called "free-cooling". The water free-cooling system consists in integrating The versions can be in different set-ups at the same PROTECTION RATING and eventually completely replacing the cooling capaci-... -
Page 7: Check List
NRL free cooling 0280-0750 60Hz CHECK LIST Ciruit Components Cooling circuit Model with D Resistance carter compressor High pressure switch Low pressure switch High pressure trasducer Low pressure trasducer Solenoid valve of hot gas injecton By-pass valve of hot gas Exchanger (EV- EV/CN) Exchanger (desuperheater) Exchanger (glycol free) -
Page 8: Principle Of Operation Schemes
NRL free cooling 0280-0750 60Hz PRINCIPLE OF OPERATION SCHEMES 3.1. PRODUCTION OF COLD WATER ONLY THE SYSTEM Description Operation exchanger (EVAPORATION) SYSTEM SIDE Production cold water exchanger (CONDENSATION) SOURCE SIDE Heat exchange with the air exchanger (EVAPORATION FREE-COOLING) SYSTEM SIDE Production cold water Sign Description compressor... -
Page 9: Operating Limits
NRL free cooling 0280-0750 60Hz OPERATING LIMITS The devices in their standard configurations are not suitable for installation in salty environments. For °F °C the operating limits, refer to diagram, valid for AHRI 114,8 °F 46 °C standard conditions. 36 °C Wind breaks should be implemented if the unit is 96,8 °F Functioning with... -
Page 10: Selection And Place Of Installation
After removal 329/2004). of packaging, movement of apparatus must be AERMEC will not assume any respon- − The support surface must be capable of carried out by qualified and adequately equipped sibility for damage due to failure to supporting the unit weight. -
Page 11: Dimension
NRL free cooling 0280-0750 60Hz DIMENSION 7.1. NRL 0280 - 0300 FE 1606 mm 1750 mm 63 in 69 in 2950 mm 3010 mm 116 in 119 in 1100 mm 1160 mm 43 in 46 in 7.2. NRL 0330 - 0350 FE 1606 mm 1750 mm 63 in... - Page 12 NRL free cooling 0280-0750 60Hz 7.4. NRL 0600 - 0650 - 0700 FA 1875 mm 74 in 1990 mm 78 in 3950 mm 4010 mm 156 in 158 in 1100 mm 1160 mm 43 in 46 in 7.5. NRL 0750 / 0750 FA 1955 mm 77 in 4350 mm...
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Page 13: Antivibration Positioning
NRL free cooling 0280-0750 60Hz ANTIVIBRATION POSITIONING 8.1. NRL 0280 - 0300 - 330 - 350 FE 200 mm 1275 mm 1275 mm 200 mm 8 in 50 in 50 in 8 in 200 mm 1275 mm 1275 mm 200 mm 8 in 50 in 50 in... - Page 14 NRL free cooling 0280-0750 60Hz 8.3. NRL 0600 - 0650 - 0700 FA 200 mm 2100 mm 1450 mm 200 mm 8 in 83 in 57 in 8 in 200 mm 2100 mm 200 mm 1450 mm 8 in 83 in 8 in 57 in 8.4.
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Page 15: Hydraulic Connection
NRL free cooling 0280-0750 60Hz HYDRAULIC CONNECTION 9.1. HYDRAULIC CONNECTION NRL 0280-0350 FA 9.2. HYDRAULIC CONNECTION NRL 0500 - 0750 FA WARNING: Clean the system carefully before connecting the unit. Cleaning will eliminate any residues suck as drops of solder, waste, rust or other impurities from the piping. These substances could deposit inside and cause the machine to malfunction. The connection pipes must be suitably sup- ported so as not to burden the apparatus with their weight. -
Page 16: Distribution Of Percentage Weights On Supportingpoints
NRL free cooling 0280-0750 60Hz DISTRIBUTION OF PERCENTAGE WEIGHTS ON SUPPORTINGPOINTS TOP VIEW WEIGHT OF EMPTY UNITS CENTER OF PERCENTAGE OF WEIGHT WEIGHT GRAVITY DISTRIBUTION SUPPORTS (%) TYPE (lib) Gx mm NRL0280F 1847 1312 VT 17 NRL0280F 2255 1395 VT 13 NRL0280F 2178 1368 VT 13... - Page 17 NRL free cooling 0280-0750 60Hz WEIGHT OF EMPTY UNITS PERCENTAGE OF WEIGHT CENTER OF DISTRIBUTION SUPPORTS WEIGHT GRAVITY TYPE (lib) Gx mm NRL0600F 3019 1701 8,0% 8,0% 32,8% 33,0% 9,1% 9,1% VT 22 NRL0600F 3526 1461 9,1% 6,9% 37,4% 28,4% 10,4% 7,9% VT 22 NRL0600F 3416...
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Page 18: Hydraulic Circuit
NRL free cooling 0280-0750 60Hz HYDRAULIC CIRCUIT 11.1. HYDRAULIC CIRCUIT (VERSIONS P3-P4) hydraulic components NRL P3-P4 hydraulic components NOT SUPPLIED STANDARD COMPONENT Exchanger plate ATTENTION The choice and the installation of Free-cooling coil components external to the NRL Water filter up to the installer, who must ope- rate according to the rules of good Ball stop technical design and in compliance... -
Page 19: Hydraulic Circuit (Versions 03-04)
NRL free cooling 0280-0750 60Hz 11.2. HYDRAULIC CIRCUIT (VERSIONS 03-04) hydraulic components NRL 03-04 hydraulic components NOT SUPPLIED STANDARD COMPONENT Exchanger plate Free-cooling coil ATTENTION The choice and the installation of Water filter components external to the NRL Ball stop up to the installer, who must ope- rate according to the rules of good Flow switch technical design and in compliance... -
Page 20: System Load
NRL free cooling 0280-0750 60Hz 11.3. SYSTEM LOAD 11.4. EMPTYING THE SYSTEM ATTENTION In case of version with pumping − Before starting the load, check that the system − Before starting to drain the system, turn "off" the unit, without standby pump, it is drain tap is closed. unit recommended to install unidirec- − Open all the drain valves of the system and of the −... -
Page 21: Electrical Wirings
NRL free cooling 0280-0750 60Hz ELECTRICAL WIRINGS • the length • the type of cable • Absorption of the unit and its physical position, and The default NRL chillers are completely wired and ATTENTION room temperature. only need the connection to the power supply net, All electrical operations must be WARNING: downstream to a group switch, according to the to the... - Page 22 NRL free cooling 0280-0750 60Hz Models 0280 0300 0330 0350 0500 0550 0600 0650 0700 0750 (ONLY EC FUN) Alimentation 208/3/60 Hz 370,1 381,7 361,5 440,4 476,3 520,8 EE 231,8 279,8 289,9 368,9 134,2 145,8 164,2 204,6 240,4 250,5 75,2 82,4 92,6 133,0...
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Page 23: Electrical Power Connection
NRL free cooling 0280-0750 60Hz ATTENTION In case of version with pumping unit, without standby pump, it is recommended to install unidirectional valves to the delivery of each module. So water reflow is avoided in the circuit of the pump/s from the other circuit. It is necessary, that the water flow rate to the chiller unit complies with the values reported in the performance tables. The systems loaded with anti-freeze or specific regulations, need the water backflow system. -
Page 24: Control And First Start-Up
The first start-up has to be carried off automatically and it restarts with the selected out with the standard settings, Bear in mind that a free start-up service is offered by operation mode. only at last test vary the values of the Aermec Technical Service for the unit of this series, the operation Set Point. at the request of Aermec customers or legitimate Before starting, power the unit for owners and in ITALY only. at least 12-24 hours by positioning... -
Page 25: Functioning Characteristics
NRL free cooling 0280-0750 60Hz FUNCTIONING In order to prevent breakage of the plate-type 15.5. WATER FLOW RATE ALARM exchanger due to freezing water contained, the CHARACTERISTICS compressor is locked (if the machine is turned on under 4° C) and the resistance starts up (if standby The GR3 provides the management of a water 15.1. COOLING SET POINT below 5° C). If the temperature detected by the flow rate alarm commanded from a flow switch probe in the exchanger output and in the chiller standardly installed on the machine. This safety type (Default defined) = 7°C/44.6°F, ∆t = 5°C/ 10°F input is below +4 °... - Page 26 NRL free cooling 0280-0750 60Hz − operating in compliance with Law 28 December 1993 The refrigerant R410A has to be loaded only no. 549. in liquid phase. It is advisable to keep a machine − Different operating conditions from the booklet (not supplied, but provided 17.5.1. LOADING PROCEDURE normal can result in different values. by the user), in order to keep trace − Leak testing or leaking research must be of the operations carried out on the The loading procedure is as follows: carried out only by using refrigerant gas unit.
- Page 28 37040 Bevilacqua (VR) Italy–Via Roma, 996 Tel. (+39) 0442 633111 Telefax (+39) 0442 93577 carta riciclata www.aermec.com - info@aermec.com recycled paper papier recyclé recycled Papier 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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