AERMEC Multiscroll 2000 Technical Manual

Nrl free-cooling

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CHILLERS- Technical manual - installation - maintenance

S- Technical m

m anual - installation - maintenan

NRL FREE-COOLING

Multiscroll 2000-3600

INRLPY. 11.11 4086926_03

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Summary of Contents for AERMEC Multiscroll 2000

Page 1 CHILLERS- Technical manual - installation - maintenance S- Technical m m anual - installation - maintenan NRL FREE-COOLING Multiscroll 2000-3600 INRLPY. 11.11 4086926_03...
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.
Page 4 CONTENT SOUND DATA ................... 21 CONTROL AND SAFETY PARAMETERS CALIBRATION ......21 GENERAL WARNINGS ................6 1.1. CONSERVING THE DOCUMENTATION ............. 6 SELECTION AND PLACE OF INSTALLATION ........... 24 1.2. SAFETY PRECAUTIONS AND INSTALLATION ..........6 POSITIONING .................... 24 PRODUCT IDENTIFICATION ................ 6 19.1.
Page 5 AERMEC S.p.A. 37040 Bevilacqua (VR) Italy – Via Roma, 996 Tel. (+39) 0442 633111 Telefax 0442 93730–(+39) 0442 93566 www . aermec . com - info @ aermec . com NRL FREE-COOLING SERIAL NUMBER CONFORMITY DECLARATION We, the undersigned, declare on our own exclusive responsibility that the object in...
Page 6 GENERAL WARNINGS 1.2. SAFETY PRECAUTIONS AND The AERMEC NRL units are built accor- INSTALLATION ding to the recognised standards and safety regulations. They have been designed for air conditioning and − The chiller must be installed by an Standards and directives to...
Page 7 DESCRIPTION AND CHOICE OF THE UNIT The NRL Free-cooling series applian- series with the plate evaporator. sufficiently low to allow water cooling ces are water chillers equipped with The water circuit may or may not be inside the free-cooling coils at an external air cooling capacity re- supplied with an accumulator assem- the desired temperature.
Page 8 CONFIGURATOR 1, 2, 3 4, 5, 6 15, 16 ° ° ° ° ° field 1, 2, 3 Code 4, 5, 6 Size 200, 225, 250, 280, 300, 330, 360 Compressors Standard compressor Thermostatic valve ° Standard mechanical thermostatic valve Mechanical thermostatic valve with produced water from +4°C to -6°C Electronic thermostatic valve with produced water up to -6°C Model...
Page 9 CHILLER CIRCUIT High pressure transducer - (TP3) (installed 5.2. HYDRAULIC COMPONENTS as standard) Placed on the high pressure side of the chil- Compressors Circulation pumps (versions with pump only ler circuit, it communicates to the control High efﬁ ciency scroll-type hermetic com- or with accumulator) card the operating pressure, sending a pre- pressors (assembled on elastic anti-vibration...
Page 10 − count of compressor work hours; − flow switch; − waiting time for restart; − start/stop; − low pressure; − alarms visualisation. − reset; − anti-freeze; − permanent alarms memory; − compressor overload; • Settings: − autostart after voltage drop; −...
Page 11 TECHNICAL DATA 7.1. CHILLER FUNCTION TECHNICAL DATA COOLING 2000 2250 2500 2800 3000 3300 3600 Cooling output Total input power 84970 95800 106640 115930 125220 147920 155490 Water flow rate 78430 88920 99420 106640 113860 137600 144820 Total pressure drops Energy indices 2.40 2.57...
Page 12 COOLING MODE (1) SOUND POWER (2) SOUND PRESSURE - Inlet water temperature 12°C Aermec determines the sound power value Sound pressure in an unrestricted range on - Outlet water temperature 7°C on the basis of measurements taken in a reflective plane (directional fact. Q=2), - Outside air temperature 35°C...
Page 13 7.2. FREE COOLING FUNCTION TECHNICAL DATA COOLING 2000 2250 2500 2800 3000 3300 3600 Cooling output Total input power 85115 95903 106691 115871 125052 147870 155459 Water flow rate 78413 88871 99330 106518 113706 137540 144658 Total pressure drops ENERGY INDICES 30.53 25.58 23.36...
Page 14 COOLING MODE (1) SOUND POWER (2) SOUND PRESSURE - Inlet water temperature 15°C Aermec determines the sound power value on Sound pressure in an unrestricted range on a - Outside air temperature 2°C the basis of measurements taken in accordan- reflective plane (directional fact.
Page 15 OPERATING LIMITS 8.1. COOLING MODE The devices in their standard configu- rations are not suitable for installation in salty environments. For the operating limits, refer to dia- gram 6.1, valid for ∆t = 5°C. Operation with Standard operation glycol ATTENTION Contact our technical sales depart- ment if the unit needs to operated outside the operating limits...
Page 16 9.2. FOR ∆t DIFFERENT FROM THE 9.2.1. ∆t different from the rated value RATED VALUE ∆t different from the rated value Cooling capacity correction factors 0.99 1.02 1.03 The performances given by the techni- cal data refer to ∆t 5°C. Cooling capacity correction factors 0.99 1.01...
Page 17 USEFUL HEADS NRL chiller function useful head Water flow rate [l/h] 40000 60000 80000 100000 120000 140000 160000 180000 200000 NRL free-cooling function useful heads Water flow rate [l/h] 40000 60000 80000 100000 120000 140000 160000 180000 200000 INRLPY. 11.11 4086926_03...
Page 18 GLYCOL FcGDpF (a) 2.20 − The cooling capacity and input FcGDpF (b) 2. 1 0 power correction factors make 2.00 FcGDpF (c) allowance for the presence of 1.90 FcGDpF (d) 1.80 glycol and the different evaporation 1.70 temperature. 1.60 FcGDpF (e) −...
Page 19 EXPANSION TANK CALIBRATION The standard pressure value for pre- H max (1) = 55 m charging the expansion tank is 1.5 bar, and the volume is 25 litres. Maximum value 6 bar. The tank must be calibrated according to the maximum difference in height (H) of the device (see figure) according to the formula: p (calibration) [bar] = H [m] / 10.2 + 0.3.
Page 20 DESUPERHEATER 15.1. PRESSURE DROPS The NRL has 2 parallel desuperheaters, for circuits without filters. The heating capacity that can be obtained from the desuperheater is obtained by multiplying the nominal value (Pd) shown in table 11.1.1 by a suitable coefficient (Cd). N.B.: The diagrams will give you the correction coefficients to be used for the characteristics of the desuperheaters and the pressure drop...
Page 21 Pressure 1000 2000 4000 8000 NRL FC Pow. dB(A) dB(A) dB(A) Sound power by central band frequency [dB] Sound power Aermec determines the sound power NRL2000A 92.0 60.0 74.0 101.0 90.0 87.8 85.9 82.1 78.1 70.0 value on the basis of measurements NRL2250A 93.0...
Page 22 2000 2250 2500 COMPRESSOR THERMOMAGNETIC SWITCHES 400V CIRCUIT 1° CIRCUIT 2° CIRCUIT 1° CIRCUIT 2° CIRCUIT 1° CIRCUIT 2° MTC1 mtc1a mtc1b mtc2 mtc2a mtc2b HIGH PRESSURE SWITCH WITH MANUAL RESET PA (bar) High pressure transducer TAP (bar) LOW PRESSURE TRANSDUCER TBP (bar) CHILLER CIRCUIT SAFETY VALVE AP (bar)
Page 23 3300 3600 COMPRESSOR THERMOMAGNETIC SWITCHES 400V CIRCUIT 1° CIRCUIT 2° CIRCUIT 1° CIRCUIT 2° MTC1 MTC1A MTC1B MTC2 MTC2A MTC2B HIGH PRESSURE SWITCH WITH MANUAL RESET PA (bar) High pressure transducer TAP (bar) LOW PRESSURE TRANSDUCER TBP (bar) CHILLER CIRCUIT SAFETY VALVE AP (bar) BP (bar) only in heat pump FAN THERMOMAGNETIC SWITCHES [°]...
Page 24 FOR THE INSTALLER The unit must be installed by an authorised and qualified technician, in com- − SELECTION AND PLACE OF pliance with the national legislation in force in the country of destination (MD INSTALLATION 329/2004). We shall not be held responsible for any damage whatsoever resulting from the Before installing the unit, decide with non-compliance with these instructions.
Page 25 DIMENSIONAL TABLES 20.1. MAXIMUM DIMENSIONS (ALL VERSIONS) NRL 2000 NRL 2250 NRL 2500 NRL 2800 NRL 3000 NRL 3300 NRL 3600 Model 2000 2250 2500 2800 3000 3300 3600 DIMENSION Height 2450 2450 2450 2450 2450 2450 2450 Depth 6400 7250 8100 8100...
Page 26 20.2. HYDRAULIC CONNECTIONS - STANDARD (00) MODEL DIMENSION U.M. 2000 2250 2500 2800 3000 3300 3600 1924 1924 1924 1500 1500 2676 2676 1210 1210 1581 1581 1581 2331 2331 1790 2215 2269 2269 2269 3019 3019 1210 1580 1581 1581 1581 2331...
Page 27 20.3. HYDRAULIC CONNECTIONS WITH PUMPS (P3-P4) MODEL DIMENSION U.M. 2000 2250 2500 2800 3000 3300 3600 2674 1500 1500 1925 1925 1925 2676 2800 3226 3650 3650 3650 5350 5240 MODELLO HYDRAULIC CONNECTION 2000 2250 2500 2800 3000 3300 3600 In/Out Tipe VICTAULIC...
Page 28 20.4. HYDRAULIC CONNECTIONS WITH STORAGE TANK AND PUMPS (03-04) MODEL DIMENSION U.M. 2000 2250 2500 2800 3000 3300 3600 1098 1098 1564 1564 1572 1572 1572 1577 1577 1436 1426 2277 2277 2277 3773 3773 1564 1584 1572 1572 1572 1577 1577 MODEL...
Page 29 20.5. POSIZION AVX AND PERCENTAGE WEIGHT DISTRIBUTION (NRL 2000) DIMENSION Model 2000 1900 1470 1900 CENTER OF GRAVITY Empty Running Center of gravity Center of gravity Weight (kg) Weight (kg) Gx (mm) Gy (mm) Gx (in) Gy (in) Unit Water Model Version 3168...
Page 30 20.6. POSIZION AVX AND PERCENTAGE WEIGHT DISTRIBUTION (NRL 2250) DIMENSION Model 2250 1900 1100 1560 1560 CENTER OF GRAVITY Empty Running Center of gravity Center of gravity Weight (kg) Weight (kg) Gx (mm) Gy (mm) Gx (in) Gy (in) Unit Water Model Version...
Page 31 20.7. POSIZION AVX AND PERCENTAGE WEIGHT DISTRIBUTION (NRL 2500 - 2800 - 3000) DIMENSIONI Model 2500 1560 1560 1560 1560 2800 1560 1560 1560 1560 3000 1560 1560 1560 1560 CENTER OF GRAVITY Empty Running Center of gravity Center of gravity Weight (kg) Weight (kg) Gx (mm)
Page 32 20.8. POSIZION AVX AND PERCENTAGE WEIGHT DISTRIBUTION (NRL 3300 - 3600) DIMENSION Model 3300 1915 1915 1915 1915 3600 1915 1915 1915 1915 CENTER OF GRAVITY Empty Running Center of gravity Center of gravity Weight (kg) Weight (kg) Gx (mm) Gy (mm) Gx (in) Gy (in)
Page 33 HYDRAULIC CIRCUIT (input and output section). 21.2. SYSTEM LOAD 2. Two antivibrating couplings (input and output section). The NRL consists of TWO CIRCUITS both 3. Two shut-off valves (normal input sec- − Before starting the load, check that the fitted with: tion, output section calibrating valve).
Page 34 The drawings are only examples of the machine hydraulic circuit Circuit 1° Circuit 2° Water filter Three-way valve Evaporator Flow switch Pump Expansion tank ATTENTION In addition to the filter, Victaulic and welded pipes are provided Circuit 1° The drawings are only examples of the machine hydraulic circuit Circuit 2°...
Page 35 ELECTRICAL WIRINGS All electrical operations must be carried out BY QUALIFIED PERSONNEL, IN ACCORDANCE WITH THE CORRESPONDING REGULATIONS, trained and in- The default NRL chillers are complete- formed about the risks related to such operations. ly wired and only need the connec- tion to the power supply net, down- stream to a group switch, according The characteristics of electric lines and related components must be esta-...
Page 36 22.2. ELECTRICAL POWER CONNEC- 22.3.2. Pump contactor (CP01 - CP02) For higher lengths or different types TION of cable installation, it will be the To prepare the pump contactor, connect DESIGNERS responsibility to carefully of the unit − For functional connection the device CP01 to the clamp 2 of the measure the line main switch, the take the supply power cable to the...
Page 37 Bear in mind that a free start-up service is the machine Before starting, power the offered by the Aermec Technical Service for the unit of this series, at the request of unit for at least 12-24 hours To activate the season change, just...
Page 38 FUNCTIONING CHARAC- activate the function of water ﬂ ow rate WARNING: alarm (ﬂ ow switch). AT ANY INTERVENTIONS OF THIS TERISTICS ALARM IT IS RECOMMENDED TO 24.5. ANTI-FREEZE ALARM IMMEDIATELY CONTACT THE NEAREST 24.1. COOLING SET POINT TECHNICAL SERVICE ASSISTANCE The anti-freeze alarm is active as if the (Default deﬁ...
Page 39 ks, the refrigerant comes out and the circuit completely before reloading it. A machine logbook should is drained, causing the unit malfunction. In − The refrigerant R410A has to be ideally be kept (not supplied, these cases, the refrigerant leakage points loaded only in liquid phase.
Page 40 The technical data in the following documentation are Via Roma, 996 - Tel. (+39) 0442 633111 not binding. Aermec reserves the right to make all the Telefax (+39) 0442 93730 – (+39) 0442 93566 modifications considered necessary for improving the product www .

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Multiscroll 3600 Nrl 2000 Nrl 2250 Nrl 2500 Nrl 2800 Nrl 3000 ... Show all