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2 2 . 0 5 – 4 0 3 7 3 6 0 _ 0 1 T r a n s l a t i o n o f O r i g i n a l i n s t r u c t i o n s NLC 0280-1250 Installation Manual AIR-WATER CHILLER C o o l i n g c a p a c i t y 1 4 .
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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.
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All specifications are subject to change without prior notice. Although every effort has been made to ensure accuracy, Aermec shall not be held liable for any errors or...
Minimum system water content ........... p. 44 Maximum system water content ..........p. 44 5. Refrigerant circuit ..............p. 22 Expansion vessel setting ..............p. 45 NLC 0280-0675 A ................. p. 22 16. Main hydraulic circuits ............p. 46 NLC 0750-1250 A ................. p. 22 NLC 0280-1250 (00) ................p. 46 6.
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Interventions on the circuit ............. p. 54 22. Configurator ................p. 55 23. Accessories ................p. 56 Factory fitted accessories ..............p. 56 Accessories compatibility ..............p. 56 22.05 – 4037360_01...
— The product is intended to be used for the purpose indicated by Aermec and for which it was expressly designed. Aermec shall not be contractually or non-con-...
(even — Keep all lubricants in properly marked containers. Do not keep flammable liq- though the circuit is tested before leaving the Aermec factory); uids near the plant; — Do not bend or strike pipes containing pressurised fluids. Do not exceed the maximum permissible pressure (PS) of the unit's water circuit;...
SELECTION CRITERIA OF THE HEAT EXCHANGERS ACCORDING TO THE PLACE OF INSTALLATION OF THE UNIT The guide provides advice for applications. Although recommendations ing ship engine exhaust, industrial production, chemical treatment facilities (cool- are given, all the details about the real world application of our prod- ing towers in the vicinity) and fossil fuel power plants.
GENERAL DESCRIPTION Reversible heat pumps for the production of chilled/heated water designed to sat- isfy the needs of residential and commercial buildings, or for industrial applications. Indoor units with Scroll compressors, centrifugal fans and plate heat exchangers. In order to correctly install the unit, observe all the instructions provid- ed in this manual, all the laws and regulations in force (EN 378, national and local standards) and in any case an additional risk analysis must be carried out by the system designer.
OPERATING LIMITS In their standard configuration, the units are not suitable for installation in salty environments. The values indicated in the table refer to the min. and max. limits of the unit, valid for ΔT = 10.1 DT °F (cooling mode) and ∆T = 9.0 DT °F (heating mode). If the unit operates beyond the operational limits, we recommend you first contact our technical-sales service.
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Operating range at the maximum high static pressure (400 Pa) 0280-0550-0600-0800-0900-1000 °F 120.0 114.8 105.8 105.0 80.0 60.0 40.0 14.0 °F 10.0 17.6 32.0 39.2 44.0 50.0 60.0 64.4 70.0 Operation with valve Y External air temperature (°F) Operation witj valve Z Water produced temperature (°F) Operation witjh valve °...
0675-1250 °F 120.0 105.7 95.8 96.7 80.0 60.0 40.0 14.0 10.0 17.6 32.0 39.2 44.0 50.0 60.0 64.4 70.0 °F Operation with valve Y External air temperature (°F) Operation witj valve Z Water produced temperature (°F) Operation witjh valve ° / X POWER SUPPLY 230V Operating range at the maximum outside air temperature 0280-0300-0330-0550-0600-0650-0800-0900-1000-1100...
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0350-0750 °F 120.0 113.0 104.0 103.2 80.0 60.0 40.0 14.0 10.0 17.6 32.0 39.2 44.0 50.0 60.0 64.4 70.0 °F Operation with valve Y External air temperature (°F) Operation witj valve Z Water produced temperature (°F) Operation witjh valve ° / X 0675-1250 °F 120.0...
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Operating range at the maximum high static pressure (400 Pa) 0280-0550-0800 °F 120.0 114.8 105.8 105.0 80.0 60.0 40.0 14.0 °F 10.0 17.6 32.0 39.2 44.0 50.0 60.0 64.4 70.0 Operation with valve Y External air temperature (°F) Operation witj valve Z Water produced temperature (°F) Operation witjh valve °...
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0350-0750 °F 120.0 105.7 95.8 96.7 80.0 60.0 40.0 14.0 10.0 17.6 32.0 39.2 44.0 50.0 60.0 64.4 70.0 °F Operation with valve Y External air temperature (°F) Operation witj valve Z Water produced temperature (°F) Operation witjh valve ° / X 0675-1250 °F 120.0...
POWER SUPPLY 208V Operating range at the maximum outside air temperature 0280-0300-0330-0550-0600-0800-0900-1000 °F 120.0 114.8 105.8 105.0 80.0 60.0 40.0 14.0 °F 10.0 17.6 32.0 39.2 44.0 50.0 60.0 64.4 70.0 Operation with valve Y External air temperature (°F) Operation witj valve Z Water produced temperature (°F) Operation witjh valve °...
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0650-1100 °F 120.0 107.6 98.6 97.8 80.0 60.0 40.0 14.0 10.0 17.6 32.0 39.2 44.0 50.0 60.0 64.4 70.0 °F Operation with valve Y External air temperature (°F) Operation witj valve Z Water produced temperature (°F) Operation witjh valve ° / X 0675-1250 °F 120.0...
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Operating range at the maximum high static pressure (400 Pa) 0280-0550-0800 °F 120.0 114.8 105.8 105.0 80.0 60.0 40.0 14.0 °F 10.0 17.6 32.0 39.2 44.0 50.0 60.0 64.4 70.0 Operation with valve Y External air temperature (°F) Operation witj valve Z Water produced temperature (°F) Operation witjh valve °...
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0350-0750 °F 120.0 105.7 95.8 96.7 80.0 60.0 40.0 14.0 10.0 17.6 32.0 39.2 44.0 50.0 60.0 64.4 70.0 °F Operation with valve Y External air temperature (°F) Operation witj valve Z Water produced temperature (°F) Operation witjh valve ° / X 0650-1100 °F 120.0...
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0675-1250 °F 120.0 96.7 87.7 86.8 80.0 60.0 40.0 14.0 10.0 17.6 32.0 39.2 44.0 50.0 60.0 64.4 70.0 °F Operation with valve Y External air temperature (°F) Operation witj valve Z Water produced temperature (°F) Operation witjh valve ° / X 22.05 –...
— A hoist or a crane; — A forklift. Product identification Aermec products are identifiable by the packaging label that shows the product LIFTING WITH A HOIST OR CRANE identification data, and by the rating plate that shows the performance and iden- tification technical data of the unit in your possession.
The anti-vibration sup- refrigerant leaks through the pressure relief valves. ports must be fixed to the unit BEFORE being earthed. AERMEC is not responsi- ble for selecting the capacity of the anti-vibration supports;...
MINIMUM TECHNICAL SPACES With regards to all units, it is essential to respect the minimum distances to avoid: — The generation of hazardous atmospheres in the case of refrigerant gas leaks; The place where the unit is installed must be accessible and permitted only to authorised personnel. It is important that the units are installed flat.
NLC UNIT OPERATION The chillers and the heat pumps of the NLC range are air-cooled machines suitable for installing indoors. For this reason the air that crosses the coil needs to be expelled from the utility room using suitable piping connected to the machine itself. The presence of the piping involves pressure drops that will need to be overcome by the fan;...
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WARNING The weight of the piping must not be borne by the appliance Example of ductwork 22.05 – 4037360_01...
POSITION OF THE VIBRATION DAMPERS NLC 0280-0350 A Top view Vers. 00 Vers. P1-P4 Vers. 01-04 NLC 0550-0675 A Top view Vers. 00 / P1-P4 Vers. 01-04 22.05 – 4037360_01...
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NLC 0750 A Top view Vers. 00 / P1-P4 Vers. 01-04 NLC 0800-1250 A Top view Vers. 00 / P1-P4 Vers. 01-04 22.05 – 4037360_01...
10 WEIGHT DISTRIBUTION AND CENTRES OF GRAVITY WEIGHT DISTRIBUTION AND CENTRES OF GRAVITY WHEN EMPTY Size 0280 0300 0330 0350 0550 0600 0650 0675 0750 0800 0900 1000 1100 1250 INTEGRATED HYDRONIC KIT: 00 Centre of gravity (empty) 33.3 32.6 32.6 32.5 54.6...
Aermec shall not be liable for any damage deriving from the use of "hard" water that is not treated or that was improperly treated. WARNING! The hydraulic connection pipes to the unit must be suit-...
vironments. To permit the circuit to drain, make sure that the drain valves have been installed in the lowest points of the circuit and that they are open. ANTI-FREEZE PROTECTION The addition of glycol is the only effective protection against freezing; the glycol/ water solution must be sufficiently concentrated to ensure proper protection and prevent ice forming at minimum temperature provided for a given installation.
If you are in any doubt, please refer to the relevant technical documentation or contact the AERMEC Technical-Commercial Service. ATTENTION It is recommended to design systems with high water content (minimum recommended values shown in tab), in order to limit: —...
EXPANSION VESSEL SETTING The expansion tank volume is 6.3 gal. The standard value of the expansion tank pre-charge pressure is 21.8 psi, but this can be calibrated up to a maximum of 87.0 psi. The expansion tank pressure setting has to be adjusted based on the difference in height (H) of the installation (see figure) according to the formula: p (rating) [bar] = H [ft] / 33.5 + 1.0.
16 MAIN HYDRAULIC CIRCUITS NLC 0280-1250 (00) Water filter: Installation in the immediate vicinity of the heat exchanger is man- datory,. Components as standard Water filter (MANDATORY) Plate heat exchanger Anti-vibration joints Water temperature sensors (IN/OUT) Pressure gauge Air drain valve (from size 0550 to 0675 A ONLY)
NLC 0280-1250 (P1-P2-P3-P4) Water filter: Installation in the immediate vicinity of the heat exchanger is man- datory,. P2-P4 P1-P3 Components as standard Air drain valve Plate heat exchanger Pressure relief valve Water temperature sensors (IN/OUT) Expansion vessel Air drain valve...
NLC 0280-1250 (01-02-03-04) Water filter: Installation in the immediate vicinity of the heat exchanger is man- datory,. P2-P4 P1-P3 Components as standard Storage tank Plate heat exchanger Drain valve Water temperature sensors (IN/OUT) Components not provided and responsibility of the installer...
17 ELECTRICAL WIRING For the installation requirements refer only to the wiring diagram — The voltage must be within a tolerance of ± 10% of the nominal power supply supplied with the unit. The wiring diagram along with the manuals voltage of the machine (for unbalanced three-phase unit max 3% between the must be kept in good condition and always available for any future phases).
18 ELECTRIC POWER CONNECTION TO TE ELECTRICAL MAINS Avoid direct contact with non-insulated copper piping and with the — Identify the clamps for the electric connection and always refer exclusively to compressor. the wiring diagram supplied with the unit; — Remove any protections from the cable fixing points; —...
19 COMMISIONING - WARNINGS START-UP Check that the circulation pump(s) are working, and that the wa- ter flow rate is sufficient to close the flow switch contact if installed, . We recommend installing one always upstream of every heat exchanger. Operations to be performed with no voltage present —...
20 MAINTENANCE Any cleaning, inspection, control or routine or extraordinary main- — If the unit has components such as integrated inverters, disconnect the power tenance intervention: must be carried out by expert technical personnel supply and wait at least 15 minutes before accessing it for maintenance opera- who are authorised and qualified to perform the activities indicated above.
— It is not permitted to change the refrigerant, hydraulic or electric layout of the — The refrigerant gas must be fully collected by specialised personnel with the unit, or its control logic unless expressly authorised by Aermec; necessary qualifications in specific containers and be delivered to collection —...
21 LIST OF THE RECOMMENDED PERIODIC INTERVENTIONS GENERAL INTERVENTIONS DESCRIPTION FREQUENCY Note 3 Mths 6 Mths 12 Mths GENERAL INTERVENTIONS Refrigerant leak control (this operation must be performed with the frequency suggested by current European regulations) • • Unit supply voltage control Compressor supply voltage control •...
23 ACCESSORIES AER485P1: RS-485 interface for supervision systems with MODBUS protocol. VT: Anti-vibration supports. AERBACP: Ethernet communication Interface for protocols Bacnet/IP, Modbus TCP/ FLG: Flange for ducts. CRATE: Special crate for transport IP, SNMP AERNET: The device allows the control, the management and the remote monitor- FILW: Water filter ing of a Chiller with a PC, smartphone or tablet using Cloud connection.
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FILTROW 0280 0300 0330 0350 0550 0600 0650 FILTRO W DN50 (1) FILTRO W DN50 (1) FILTRO W DN50 (1) FILTRO W DN50 (1) FILTRO W DN65 (1) FILTRO W DN65 (1) FILTRO W DN65 (1) (1) Installation is mandatory, contrarily garantee becomes void. 0675 0750 0800...
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