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NXW Technical Manual

1. Mod NXW vers U M 0500 0550 0600 0650 0700 0750 0800 0900 1000 1250 1400 Cooling capacity 1 ton 31 76 34 66 36 77 42 25 47 06 54 17 62 78 70 92 80 16 90 51 101 77 Total input power kW 23 5 25 0 27 2 30 4 35 1 38 7 47 4 55 2 61 6 69 7 77 4 Evaporator water flow rate L gpm 76 16 83 10 88 13 101 29 112 80 129 81 150 49 169 99 192 10 216 96 243 92 Evaporator pressure drop PSI 2 8 3 2 3 6 41 4 8 3 9 4 5 5 5 3 8 3 5 3 5 Condenser water flow rate gpm 95 64 104 35 110 68 127 19 141 66 163 02 188 99 213 47 241 25 272 47 306 32 Pressure drop at condenser PSI 2 6 30 3 5 3 5 4 2 2 6 3 3 4 2 3 2 3 6 3 8 Heating capacity 2 BTU h 412600 449500 476800 545400 609600 695400 818300 924500 1047800 1184800 1326500 Total input power kW 28 5 ST 39 38 4 43 8 47 4 57 4 66 3 7356 83 4 92 8 Condenser water flow rate L gpm 91 46 99 64 105 72 120 95 135 20 154 20 181 46 205 022 23237 262 690 8294717 Pressure drop at condenser PSI 28 2 8 3 0 E 3 9 23 2 3 9 2 9 33 E Evaporator water flow rate gpm 70 96 77 28 81 50 93 35 103 67 120 10 140 17 15732 17943 22023698 0227 41 Evaporator pressure drop PSI 23 2 8 3 0 3 3 4 1 33 3 9 4 8 353 3 0 3 0 ENERGY INDEXES EER L BTU W 16 23 16 65 16 23 16 69 16 10 16 81 15 90 15 43 15 62 15 59 15 79 COP W W 4 24 4 23 4 15 4 16 4 07 4 30 4 17 4 08 4 17 4 16 4 19 AHRI PART LOAD RATINGS IPLV W W 6 11 6 27 6 24 6 27 6 06 6 33 5 99 5 81 5 88
2. i max 1 55m 180 3ft of the expansion vessel is 1 5bar 21 8PSI while 2 their volume is 251 6 6gal The maximum a value is 6bar 87PSI 2 Vessel calibration must be regulated using the maximum level difference H of the user see diagram by using the following formula p calibration bar H m 10 2 0 3 n e For example if level difference H is H 12 25m 40 2ft equal to 20m 65 6ft the calibration value of 8 the vessel will be 2 3bar 33 4PSI If the calibration value obtained from thecalculation is less than 1 5bar 21 8PSI i e for H lt 12 25 keep standard calibration Om ft D e 8 n H min 2 1 Check that highest installation does 2 Ensure that lowest installation can not exceed a height difference of 55m 180 3ft withstand global pressure in that position NXW Hydraulic height H ft 98 4 82 65 6 49 2 gt 40 2 Calibration of the expansion vessel PSI 46 4 40 6 33 4 26 1 21 8 Water content reference value gal 9 574 3 699 0 823 7 948 4 1017 6 Water content reference value gal 258 4 314 4 370 9 426 9 457 5 INXWPY 1402 4438856 01 27 EN ETHYLENE GLYCOL COOLING MODE CORRECTION FACTOR WITH ETHYLENE GLYCOL Freezing Point Percent ethylene glycol Freezing Point Percent ethylene glycol Ph
3. Qwc Corrective factor of flow rates middle water temperatur 9 5 C Qwh Corrective factor of flow rates middle water temperatur 42 5 C Pc Corrective factor of cooling capacity Ph Corrective factor of heating capacity Pa Corrective factor of imput power Dp Corrective factor of pressure drop PROPYLENIC GLYCOL COOLING MODE CORRECTION FACTOR WITH PROPYLENIC GLYCOL Freezing Point Percent propylenic glycol Freezing Point Percent propylenic glycol Qwc Corrective factor of flow rates middle water temperatur 9 5 C Qwh Corrective factor of flow rates middle water temperatur 42 5 Pc Corrective factor of cooling capacity Ph Corrective factor of heating capacity Pa Corrective factor of imput power Dp Corrective factor of pressure drop 28 INXWPY 1402 4438856 01 13 SOUND DATA Sound power by central band frequency NXW Power Pressure dB A dB A L HL dB A 13 1 SOUND LEVELS 32 8ft 3 3ft 125 250 500 1000 2000 4000 8000 0500L 79 47 62 553 602 742 763 675 623 46 1 pound power 0550L 78 46 61 546 588 730 756 665 612 451 Aermec determines sound power values on the basis of measurements made in accordance with 0600L 79 47 62 55 5 597 739 765 674 621 46 0 UNI EN ISO 9614 2 as required for Eurovent certi
4. 17 Cooling Capacity And Input For AT Different From The Rated Value Fouling Factors Heating Capacity With Desuperheater For AT Different From The Rated Value Fouling FACTORS eene R 19 Desuperheater Pressure 19 Heating Capacity With Total 20 For AT Different From The Rated 20 FOulitig ECOL Sin acci itera Ete reo eR eds 20 Pressure Drops Total 21 Total Pressure Drops 22 Evaporator In Cooling 22 Condenser In Cooling Operation sees 23 Useful Heads Minimum Maximum Water Content In The System Expansion Tank Calibration 127 Sound Data Sound Eevels re enero cce i cene re 29 Safety And Check Parameter Setting 30 Capacity Control tee 31 Standards and directives to be followed in the design and manu facture of the unit STANDARD 1 UL 1995 Heating and cooling equipment 2 ANSI NFPA Standard 70 National Electrical code N E C 3 CSA C 22 1 C 22 2 Safety Standard Electrical Installation SAFETY LEVEL 1 24
5. 2 Ei 1 amp 404 5 204 0 0 0 10000 20000 30000 40000 50000 60000 70000 80000 90000 100000 l h T T T T T T T T T T T T T T T T T T T T T T T T T T T F T T T T 1 0 50 100 150 200 250 300 350 400 440 gpm Water flow rate The correction to apply to the pressure drops when the aver age water temperature varies EVAPORATOR Average water temperature C F 5 41 10 50 15 59 20 68 30 86 40 104 50 122 Correction factor 1 02 1 0 985 0 97 0 95 0 93 0 91 22 INXWPY 1402 4438856_01 9 2 CONDENSER IN COOLING OPERATION Water flow rate 1 MIN e MAX The diagram pressure drops are related to an average bis water temperature of 30 C 86 F Model U M Water flow rate MIN Water flow rate MAX 0500 0800 gpm 34 9 245 7 0900 1400 gpm 74 5 531 ATTENTION Lower water flow speed might get some substance deposited in the heat exchanger Higher water flow speed might cause mechanical damages CONDENSER PRESSURE DROPS VERSION H PSI kPa 11 26 4 80 14 1400 0600 0650 47 104 7 1000 1250 0750 0800 9 amp 0 0500 0550 _ o 806 ao 5 4 3 204 2 1 e 0 0 0 10000 20000 30000 40000 50000 60000 70000 80000 90000 100000 110000 120000 1 rit o TT IEEE rrr 0 50 100 150
6. 4 Product Identification iiie terere 4 Description And Choice Of The 5 Available Models Available Versions Available Versions Description And Choice Of The Unit Description 5 7 Cooling CIRCUIT tree tenen 7 dri c 7 Hydraulic Comiporients e ro rete 7 Electrical 5 1 7 Electronic Reg lation eir rece ree nate 7 Durcrt 9 Electric Regulation Accessories sse 9 General 9 Technical Data Version L 5 2 10 Version H Heat Pump With Water Side Inversion Version HI Heat Pump With Water Side Inversion Silenced e M 13 Operating 16 Operating Limits Standard Version 16 Operating Limit Version E Condenserless 16 CottectiVe Factor cerent tiere cede niet 17 Heating Capacity And Input 17 For AT Different From The Rated 17 Fouling FaCtO S
7. AERMEC air conditioning amp AERMEC 9 eoeo WATER COOLED CHILLER AND HEAT PUMP XW e INDOOR UNITS e SCROLL COMPRESSORS AERMEC COMPANY QUALITY SYSTEM o 150 9001 2008 n 0128 LISTED Intertek INXWPY Dear customer Thank you for choosing AERMEC It is the fruit of many years of experience and special design stud ies and has been made of the highest grade materials and with cutting edge technology The quality level is being constantly monitored so AERMEC products are synonymous with Safety Quality and Reliability The data may undergo modifications considered necessary for the improvement of the product at any time and without the obligation for any notice thereof Thank you again 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 SUMMARY 1 1 1 2 3 1 3 2 3 3 3 4 4 1 4 2 4 3 4 4 4 5 5 1 5 2 6 1 6 2 7 1 7 2 8 1 8 2 8 3 8 4 8 5 8 6 8 7 8 8 8 9 8 10 8 11 8 12 8 13 8 14 9 1 9 2 10 11 12 13 13 1 14 15 General Warnings 4 Storage Of The Documentation sese 4 Safety Precautions And Installation
8. 3514 2 3880 1 mm 1885 1885 Hight in 74 2 74 2 800 800 Width 31 5 31 5 mm 2090 2420 Lenght in 82 28 95 28 Welsh kg 782 843 879 941 1187 1131 1164 1524 1742 1792 1958 ei 8 Ib 1724 0 1858 5 1937 9 2074 5 2616 9 2493 4 2566 2 3359 8 3840 5 3950 7 4316 7 DIMENSIONS with 4 pumps mm 1775 1775 1775 1850 Hight in 69 9 69 9 69 9 72 8 mm 800 800 800 800 Width 31 5 31 5 31 5 31 5 mm 3020 3480 3480 3480 Lenght in 118 9 137 0 137 0 137 0 Welsh kg 920 980 1016 1104 1166 1398 1405 1843 2134 2184 2350 ei 8 Ib 2028 3 2160 5 2239 9 2433 9 2570 6 3082 1 3097 5 4063 1 4704 7 4814 9 5180 9 mm 1885 1885 Hight 74 2 74 2 mm 800 800 Width HL in 31 5 31 5 mm 2944 3412 Lenght 115 90 134 33 Weight kg 1172 1232 1268 1356 1418 1650 1658 2132 2423 2473 2639 8 Ib 2583 8 2716 1 2795 5 2989 5 3126 2 3637 6 3655 3 4700 3 5341 8 5452 0 5818 0 Performance values refer to cooling mode SOUND POWER Aermec determines sound power values on the basis of measurements made in accordance with UNI EN ISO 9614 2 as required for Eurovent certification SOUND PRESSURE Sound pressure in free field at 10 m 32 8ft distance from the external sur face of the unit in accordance with UNI EN ISO 3744 INXWPY 1402 4438856_01 15 7 OPERATING LIMITS 7 1 OPERATING LIMITS STANDARD VERSION Re
9. ACOUSTIC PART 1 150 DIS 9614 2 sound inten sity method REFRIGERANT GAS R410A This unit contains fluorinated greenhouse gases covered by the Kyoto Protocol Maintenance and disposal operations must be only carried out by qualified staff in compliance with existing laws TECHNICAL PLATE fig 1 technical plate 4 INXWPY 1402 4438856 01 1 GENERAL WARNINGS NXW AERMEC is built according to recognised technical standards and safety regulations They have been designed for air conditioning and hot water production and must be used for this purpose in accordance with their per formance characteristics The company shall not be contractually or non contractually liable for any damage to people animals or objects for failures caused by errors during installa tion adjustment and maintenance or incorrect use All the uses not expressly indicated in this manual are not allowed 1 1 STORAGE OF THE DOCUMENTATION Deliver the following instructions plus all the complementary documentation to the system user who shall be responsible for keeping the instructions so that they are always available when needed Read carefully this chapter all the procedures must be carried out by qualified personnel according to the regulations in force in the dif ferent countries M D 329 2004 The unit must be installed in such a way as to make all maintenance and or repair operations possible The warranty of the d
10. DESCRIPTION AND CHOICE OF THE UNIT The NXW Heat pumps and reversible water water FOR INDOOR INSTALLATION have been designed to completely satisfy any plant and application needs thanks to a wide range of models configurations and accessories For years Aermec has been attentive to the energy efficiency issue and has now designed the NXW units with the aim of ensuring high ef ficiency levels with both full and partial loads The NXW unit is commissioned and delivered completely charged with R410A refrigerant and oil on site it will be necessary only to provide the hydraulic and electric connections while the Condenserless lt lt gt gt versions are delivered only with a watertight charge data available on demand 3 1 AVAILABLE MODELS Heat pump H heat pump with gas side cycle inversion Extended operating limits temperature of condenser output water up to 55 131 F temperature of evaporator output water down to 8 18 F 3 2 AVAILABLE VERSIONS Silenced L Reduced sound emission thanks to to tal compressor casing of the machine with galvanised sheet metal panels of a suitable thickness and with good sound absorbing capacity Heat recovery units Without recovery units Desuperheater D They are equipped with a partial plate heat recovery unit installed in series with the condenser Total recovery T They are equipped with a plate heat exchanger installed in parallel to
11. H P O P 3 0 3 0 3 0 3 0 4 0 4 0 4 0 7 5 7 5 7 5 75 7230V 7 8 7 8 7 8 7 8 10 0 10 0 13 2 Input current A60V A 3 9 3 9 3 9 3 9 5 0 5 0 6 6 6 6 6 6 6 6 6 6 MUNI 575V 3 1 3 1 3 1 3 1 4 0 4 0 5 3 5 3 5 3 5 3 5 3 230V 10 0 10 0 10 0 10 0 13 2 13 2 13 2 Input current H HL A60V A 5 0 5 0 5 0 5 0 6 6 6 6 6 6 11 0 11 0 11 0 11 0 575V 4 0 4 0 4 0 4 0 5 3 5 3 5 3 8 8 8 8 8 8 8 8 Available head L P M 25 7 24 4 23 8 21 2 20 5 19 6 23 6 20 9 22 6 18 9 14 5 Available head H P O Ral pn 37 6 36 3 35 7 33 1 39 3 36 8 30 7 40 8 42 1 37 7 32 6 Performance values refer to cooling mode Cooling with recovery operation 3 Evaporator Water outlet 6 7 C 44 F Water NOW 0 0431 5 kW 2 4gpm ton Desuperheater Total recovery Water inlet temperature 40 C 104 F Water outlet 45 C 113 F 14 INXWPY 1402 4438856_01 Mod NXW vers U M 0500 0550 0600 0650 0700 0750 0800 0900 1000 1250 1400
12. 0650L 79 47 62 54 8 59 7 73 8 76 6 67 1 61 6 44 9 fication 0700L 80 48 63 553 602 743 77 1 69 6 62 1 45 4 Sound pressure 0750L 80 48 63 56 0 61 0 74 9 77 6 68 0 62 5 45 9 Sound pressure in free field at 10 m distance from 08001 82 50 65 58 7 63 6 77 0 79 7 69 4 64 3 48 0 the external surface of the unit in accordance with UNI EN ISO 3744 0900L 85 53 68 619 668 802 829 726 675 512 1000L 87 55 70 63 7 68 6 82 0 847 74 4 693 53 0 1250L 89 57 72 655 704 838 865 762 71 1 548 1400L 90 58 73 667 71 6 850 877 774 72 3 56 0 NXW 0500 0800 version with pumps High head add 4dB A NXW 0900 1400 version with pumps High head add 2dB A Reference data AHRI standard in cooling operation Evaporator Water outlet temperature 6 7 C 44 F Water oe 0 043l s per kW 2 4gpm ton Condenser Water inlet temperature 29 4 C 85 F Water flow 0 0541 5 per kW 3gmp ton INXWPY 1402 4438856 01 29 30 14 SAFETY AND CHECK PARAMETER SETTING MIN 4c Cooling set Water inlet temperature in cooling mode MAX 15 C DEFAULT 7 07 MIN 30 C Heating setting Water inlet temperature in heating mode MAX 50 C DEFAULT 50 C Antif larm intervention t t EV side water output MUN eir ntifreeze alarm intervention temperature on EV
13. 160 a 2 M0 75 1 9 1 1204 1000 1250 1400 4 l 5 15 4 100 0500 0550 80 10 4 60 4 4 40 0600 0650 5 20 2 7 0750 0 0 Lp e qr epo eoe 0 10000 20000 30000 40000 50000 60000 70000 7 1 L 3 0 50 100 150 200 250 300 308 Water flow rate EVAPORATOR USEFUL HEAD HIGH HEAD VERSION H PSI kPa 544 4 375 5 J 360 4 50 340 4 j 320 45 1 1 300 1 0600 0650 4 1 280 260 4 351 240 4 4 220 4 1 200 4 4 1 5 21 1 0500 0550 9 j 2 j 160 4 20 140 1204 18 100 4 1 4 0750 0800 807 10 J 1000 1250 41044 0900 1400 204 0 OT 0 10000 20000 30000 40000 50000 60000 70000 80000 90000 T J T T T T T1 0 50 100 150 200 250 300 350 390 3 26 Water flow rate INXWPY 1402 4438856 01 l h gpm l h gpm 11 MINIMUM MAXIMUM WATER CONTENT IN THE SYSTEM Mod NXW vers U M 0500 0550 0600 0650 0700 0750 0800 0900 1000 1250 1400 WATER CONTENT IN ii gal ton 1 1 321 1 057 a THE SYSTEM gal ton 2 2 642 2 113 1 Minimum water content 2 Minimum water content in the case of process applications or applications with low load At Project data less than 5 C 10 F 12 EXPANSION TANK CALIBRATION The standard pre load pressure value
14. 175 200 225 Evap cond low head pumps LRA A 218 200 229 96 227 239 284 337 347 409 434 MCA L A 76 81 87 96 108 20 141 154 164 195 221 MOP A 105 106 116 116 133 45 170 188 198 242 267 Recommended fuse A 100 100 110 10 125 25 150 175 175 225 250 Evap cond high head pumps LRA A 220 202 231 199 230 245 288 343 359 419 445 MCA A 78 83 89 99 112 26 146 160 177 206 231 MOP x A 107 108 118 119 137 51 175 194 211 252 278 Recommended fuse A 100 100 110 110 125 50 150 175 200 250 250 Reference data AHRI standard In cooling operation 1 In heating operation 2 Evaporator Evaporator Water outlet temperature 6 7 C 44 F Water inlet temperature 10 C 50 F Water flow 0 0431 5 per kW 2 4gpm ton Water outlet temperature 5 C 41 F Condenser Condenser Water inlet temperature 29 4 C 85 F Water inlet temperature 40 C 104 F Water 0 0541 5 per kW 3gmp ton Water outlet 45 113 F 10 INXWPY 1402 4438856 01 Mod NXW vers U M 0500 0550 0600 0650 0700 0750 0800 0900 1000 1250 1400 ELECTRICAL DATA 575V 3 60Hz power supply Input current
15. 2 16 1 Water connections Victaulic inch 2 1 2 2 1 2 21 2 2 3 2 2 31 2 2 1 2 2 1 2 2 1 2 3 3 3 TOTAL HEAT RECOVERY Recovered heating capacity 3 BTU h 426900 464500 495200 563500 631800 720600 850400 959700 1079200 1226100 1376400 Quantity 1 1 1 1 1 1 1 2 1 1 1 Chiller input power L kW 28 9 31 4 34 1 38 8 44 3 48 0 58 2 67 3 74 4 84 5 94 0 Total recovery water flow gpm 94 95 102 80 109 57 125 31 140 06 160 16 188 44 213 02 239 64 271 63 305 51 Total recovery pressure drop PSI 2 5 2 9 3 3 3 3 41 2 5 3 3 4 2 3 0 3 5 3 6 Water connections Victaulic inch 2 4 2 2 4 2 2 3 2 2 1 2 2 3 2 2 1 2 2 1 2 2 1 2 3 3 3 DESUPERHEATER Recovered heating capacity 3 BTU h 74500 80600 86100 97000 107900 116100 138000 161500 170800 190600 210400 Quantity 2 2 2 2 2 2 2 2 2 2 2 Desuperheater water flow gpm 16 51 17 87 19 08 21 51 23 93 25 75 30 60 35 82 37 86 42 26 46 65 Desuperheater pressure drop PSI 0 1 0 2 0 2 0 2 0 2 0 3 0 3 0 4 0 3 0 4 0 5 Weight Ib 50 7 50 7 50 7 50 7 50 7 50 7 50 7 63 9 63 9 63 9 63 9 Water connections Victaulic inch 1 1 2 1 2 1 1 2 1 1 2 1 1 2 171 2 1 1 2 11 2 1151 2 1 1 2 1 1 2 EVAPORATOR PUMPS Input power L P M N 2 2 2 2 2 2 2 2 3 0 3 0 4 0 4 0 4 0 4 0 4 0 Input power H P O P 3 0 3 0 3 0 3 0 4 0 4 0 4 0 7 5 7 5 7 5 7 5 Input current 230V 7 8 7 8 7 8 7 8 10 0 10 0 13 2 460V A
16. 200 250 300 350 400 450 500 528 gpm Water flow rate The correction to apply to the pressure drops when the aver age water temperature varies CONDENSER Average water temperature C F 23 73 28 82 33 91 38 100 43 109 48 118 53 127 58 136 Correction factor 1 02 1 01 1 00 0 99 0 98 0 97 0 96 0 95 INXWPY 1402 4438856 01 23 10 24 USEFUL HEADS EVAPORATOR USEFUL HEAD LOW HEAD VERSION PSI kPa 31 9 1 220 30 B 4 200 4 1 180 25 10 4 20 _ 140 4 120 4 1 F 15 100 E 1 80 0500 0550 10 4 0400 60 40 5 E 20 0 0 0 10000 20000 30000 40000 50000 60000 70000 T T 1 0 50 100 150 200 250 300 308 Water flow rate CONDENSER USEFUL HEAD LOW HEAD VERSION H EVAPORATOR VERSION H PSI kPa 49 3 340 1 320 _ 1250 1400 45 300 _ 280 291 0900 2604 35 240 4 220 0500 0550 9750 0800 2004 0600 2 1 5 j 4 1804 2 0650 0700 160 4 4 5 d oe 20 1404 1 1204 15 1 100 80 4 10 7 60 5 4 40 j 20 OO pe 0 10000 20000 30000 40000 50000 60000 70000 80000 90000 T T T T T 1 0 50 100 150 200 250 300 396 INXWPY 1402 4438856 01 Water flow rate
17. 3 9 3 9 3 9 3 9 5 0 5 0 6 6 6 6 6 6 6 6 6 6 575V i 31 31 31 31 40 40 5 3 5 3 53 53 5 3 Input current O P 230V 10 0 10 0 10 0 10 0 13 2 13 2 13 2 460V A 5 0 5 0 5 0 5 0 6 6 6 6 6 6 11 0 11 0 11 0 11 0 ROD 4 0 4 0 4 0 4 0 5 3 5 3 5 3 8 8 8 8 8 8 8 8 Available head L P M PSI 3 6 3 4 3 2 2 9 2 7 2 5 2 1 2 5 3 1 2 6 2 0 Available head O P 5 3 5 1 50 4 6 5 5 5 0 4 1 5 4 5 9 5 4 4 7 7 Performance values refer to cooling mode Cooling with recovery operation 3 Evaporator Water outlet 6 7 C 44 F Water bn rcs ii Cos 0 043l s per kW 2 4gpm ton Desuperheater Total recovery Water inlet temperature 40 C 104 F Water outlet 45 C 113 F INXWPY 1402 4438856 01 11 12 Mod NXW vers U M 0500 0550 0600 0650 0700 0750 0800 0900 1000 1250 1400 CONDENSER PUMPS Input power L P U V kW 272 2 2 2 2 30 3 0 40 40 5 5 5 5 75 7 5 Input power W 2 3 0 3 0 3 0 4 0 4 0 7 5 7 5 7 5 110 110 110 230V 7 8 7 8 7 8 10 0 10 0 13 2 13 2 Input current U V 460V A 3 9 3 9 3 9 5 0 5 0 6 6 6 6 9 2 9 2 110 110 575V i 3 1 3 1 3 1 4 0 4 0 5 3 5 3 7 4 7 4 8 8 8 8 23
18. Correction factor cooling capacity 0 99 1 1 02 1 03 Correction factor input power 0 99 il 1 01 1 02 Correction factor heating capacity 0 99 1 1 02 1 03 Condenser At different to nominal 3 5 5 10 8 14 10 18 Correction factor heating capacity 0 9912 1 1 013 1 0227 Correction factor input power 1 0144 1 0 978 0 9633 8 3 1 FOULING FACTOR Fouling factor K m W 0 00001 0 00002 0 00005 Correction factor cooling capacity 1 0 99 0 98 Correction factor input power T il Correction factor heating capacity 1 1 0 99 Correction factor input power 1 1 1 02 INXWPY 1402 4438856 01 17 18 8 4 COOLING CAPACITY AND INPUT POWER HEATING PUMP IN COOLING OPERATION VERSIONS The refrigerating capacity yielded and the input electrical capacity in condi tions other than rated conditions are obtained by multiplying the rated val ues Pf Pa by the respective correction coefficients Cf Ca The diagram allows you to obtain the correction coefficients correspond ing to each curve the temperature of the hot processed water referred to is reported assuming a difference in water temperature between the input and output of the condenser equal to 5 C 10 F KEY Cf Cooling capacity correction coefficient Ca Input power correction coef ficient 8 5 FOR AT DIFFERENT FROM THE RATED VALUE For At different from 5 C to the evapo rator refer to Tab 8 5 1 for the cooling capacity and input power correction fa
19. E 2 og ener eee 5 1 en A 8 0 7 ft 1 1 0 6 1 1 1 T T T T T T T T T T T 11 T 8 7 6 5 4 3 2 4 0 1 2 3 4 5 617 8 9 10 11 12 13 44 15 16 17 18 1 76 20 5 45 850 55 6 Evaporator output water temperature At 5 C 10 F A B D E F G Condenser Output C 25 30 35 40 45 50 55 water temperature eF 77 86 95 104 113 122 131 fig 8 14 1 8 15 1 CORRECTION FACTORS FOR AT DIFFERENT FROM THE CHILLER RATED VALUE Evaporator At different to nominal C F 3 5 5 10 8 14 10 18 Correction factor cooling capacity 0 99 1 1 02 1 03 Correction factor input power 0 99 il 1 01 1702 Correction factor heating capacity 0 99 1 1 02 1 03 Condenser At different to nominal 3 5 5 10 8 14 10 18 Correction factor heating capacity 0 9912 1 1 013 1 0227 Correction factor input power 1 0144 il 0 978 0 9633 8 16 1 FOULING FACTOR Fouling factor K m W 0 00001 0 00002 0 00005 Correction factor cooling capacity 1 0 99 0 98 Correction factor input power al 1 1 Correction factor heating capacity 1 1 0 99 Correction factor input power l 1 1 02 water temperature water temperature 5 C 10 F At 5 C 10 F At 8 14 PRESSURE DROPS TOTAL RECOVERY The pressure drops in the charts refer to an average water temperature of 50 C 122 F The table 8 17 1 shows the corrections to apply to the pressure drops with a variation in avera
20. cooling i A 33 33 37 41 46 50 65 70 73 82 91 Input current heating A 37 39 43 48 54 58 74 80 84 95 105 No pump version LRA A 160 139 162 125 161 177 214 263 266 335 358 MCA A 61 58 63 62 80 96 115 117 120 145 168 MOP d A 88 80 90 77 102 118 142 145 148 184 207 Recommended fuse A 80 80 80 75 100 110 125 125 125 175 200 Evap cond low head pumps LRA A 166 146 169 132 169 186 225 276 278 349 372 MCA A 67 64 70 70 88 105 126 130 133 160 182 MOP d A 94 86 96 84 110 127 152 157 160 198 221 Recommended fuse A 90 80 90 80 110 125 150 150 150 175 200 Evap cond high head pumps LRA A 168 147 170 134 172 191 228 281 288 358 380 MCA L A 69 66 71 72 91 110 129 135 143 168 191 MOP A 96 88 98 86 113 132 156 162 170 207 229 Recommended fuse A 90 80 90 80 110 125 150 150 150 200 200 CHARGE Circuit C1 C2 Ib C1 16 1 16 1 16 1 19 2 19 2 28 7 29 1 29 1 43 2 48 5 59 1 Refrigerant RA10A L Ib C2 16 1 16 1 16 1 19 2 19 2 28 7 29 1 29 1 43 2 48 5 59 1 oil L gal C1 0 9 18 18 1 8 1 8 18 18 25 2 5 3 0 3 6 gal C2 0 9 0 9 0 9 1 8 1 8 18 18 18 2 5 3 0 3 6 COMPRESSOR Quantity Circuit L n n 2 2 3 2 3 2 4 2 4 2 4 2 4 2 4 2 4 2 4 2 4 2 EVAPORATOR Quantity n n 1 T 1 1 1 1 1 1 1 1 1 Water content L gal 2 5 2 5 2 5 2 8 2 8 3 9 4 4 4 4 8 0 9 9 12 0 Water connections Victaulic inch 2 1 2 2 1 2 2 1 2 2 1 2 2 13 2 24 2 2 1 2 21 2 3 3 CONDENSER Quantity 1 1 1 1 T 1 1 1 1 Water content L gal 3 2 3 2 3 2 3 9 3 9 8 0 8 0 8 0 12 0 13
21. kW 2 4gpm ton Water outlet 5 C 41 F Condenser Condenser Water inlet temperature Water flow 29 4 C 85 F 0 054l s per kW 3gmp ton 40 C 104 F 45 C 113 F Water inlet temperature Water outlet temperature INXWPY 1402 4438856_01 13 Mod NXW vers U M 0500 0550 0600 0650 0700 0750 0800 0900 1000 1250 1400 ELECTRICAL DATA 575V 3 60Hz power supply nput current cooling anal A 33 33 37 41 46 50 66 69 73 46 92 nput current heating A 37 39 42 48 54 59 75 79 84 95 106 No pump version LRA A 160 139 162 125 161 177 214 263 266 335 358 MCA Tru A 61 58 63 62 80 96 115 117 120 45 168 MOP A 88 80 90 77 102 118 142 145 148 184 207 Recommended fuse A 80 80 80 75 100 110 125 125 125 75 200 Evap cond low head pumps LRA A 166 146 169 132 169 186 225 276 278 349 372 MCA A 67 64 70 70 88 105 126 130 133 60 182 MOP 94 86 96 84 110 127 152 157 160 198 221 Recommended fuse A 90 80 90 80 110 125 150 150 150 75 200 Evap cond high head pumps LRA A 168 147 170 134 172 191 228 281 288 358 380 MCA TET A 69 66 71 72 91 110 129 135 143 68 191 MOP A 96 88 98 86 113 132 156 162 170 2
22. l h gpm l h gpm Useful heads Useful heads EVAPORATOR USEFUL HEAD HIGH HEAD VERSION PSI kPa 544 4 375 4 3604 50 4 J 320 45 1 J 300 40 1 280 J 260 35 240 4 J 220 2 30 j 11 290 0500 0550 14 180 0400 25 1 J 1604 20 140 4 1204 0650 18 1 100 3 j 804 10 4 1 j 604 0700 0900 5 4 40 d 1400 j 204 0750 0800 1000 zl 5 MN 1250 0 0 a a a ETRE RZEZZJRIERERIRFFRREEZEE 0 10000 20000 30000 40000 50000 60000 70000 80000 90000 T T T 1 0 50 100 150 200 250 300 3 Water flow rate CONDENSER USEFUL HEAD HIGH HEAD VERSION EVAPORATOR VERSION PSI kPa 544 4 375 4 360 50 3404 J 320 4 45 1 0650 0700 300 4 40 2 280 B 260 4 35 1 E 22215 0500 0550 1 22043 0400 50 20041 J 180 4 25 j J 160 4 20 140 3 J 120 4 18 1004 804 10 j 604 21 443 0750 0800 1000 1250 25 0900 0 0 rrm nee eee peo ee eee 0 10000 20000 30000 40000 50000 60000 70000 80000 90000 100000 T T M M T T T T F T M T T T T M 1 0 50 100 150 200 250 300 350 400 440 Water flow rate INXWPY 1402 4438856 01 25 l h gpm l h gpm EVAPORATOR USEFUL HEAD LOW HEAD VERSION H PSI kPa 348 240 220 30 2004 1804 25 1
23. side water outpu MAX temperature DEFAULT Proportional t ture band within which th tivated 22 Total differential iona emperature band within which the compressors are activate MAX 10 deactivated DEFAULT 5 C Power supply 230V 60Hz MTC1 1 CP1A A 68 41 41 41 41 41 41 41 63 63 63 68 68 MTC2 2 CP2A 68 63 68 41 41 41 63 63 63 68 68 Power supply 460V 60Hz MTC1 CP1 CP1A A 32 22 22 22 22 22 22 22 28 28 28 32 32 37 37 37 37 37 51 51 51 MTC2 CP2 CP2A A 32 28 32 22 22 22 28 28 28 32 32 32 32 37 37 37 51 51 51 Power supply 575V 60Hz MTC1 CP1 1 A 29 16 16 16 16 16 16 16 24 24 24 29 29 30 30 30 30 30 43 43 43 MTC2 CP2 CP2A A 29 24 29 16 16 16 24 24 24 29 29 29 29 30 30 30 43 43 43 Pressure switch high press HP PSI 580 2 580 2 580 2 580 2 580 2 580 2 580 2 580 2 580 2 580 2 580 2 High pressure transducer PSI 565 6 565 6 565 6 565 6 565 6 565 6 565 6 565 6 565 6 565 6 565 6 Low pressure transducer PSI 23 2 23 2 23 2 23 2 23 2 23 2 23 2 23 2 23 2 23 2 23 2 High pressure valve PSI 652 7 652 7 652 7 652 7 652 7 652 7 652 7 652 7 652 7 652 7 652 7 INXWPY 1402 4438856 01 15 CAPACI
24. the hot processed water referred to is 8 3 104 reported assuming a difference in water Sa temperature between the input and out 8 09 put of the condenser equal to 5 C 10 F i KEY Oe Cd Heating capacity correction coefficient oe l l T 40 41 42 43 44 45 46 47 48 49 50 C 8 8 FOR AT DIFFERENT FROM THE EK CGU GLEN CENE ae RATED VALUE 104 106 108 110 112 114 116 118 120 122 F Temperature of water produced atdesuperheater At 5 C 10 F For At different from 5 C 10 F to the evaporator refer to Tab 8 11 1 for the A B D E F cooling capacity and input power correc Condenser Output C 25 30 35 40 50 55 tion factors water temperature F 77 86 95 104 122 131 fig 8 10 1 8 9 FOULING FACTORS 8 11 1 CORRECTION FACTORS FOR AT DIFFERENT The performance levels indicated in table FROM THE CHILLER RATED VALUE E 5 id r a p ns aes 4 Evaporator At different to nominal 3 5 8 10 p ES IU ONING Orc enO ve Correction factor cooling capacity 0 99 1 1 02 1 03 different from the fouling factor multiply z Correction factor input power 0 99 1 1 01 1 02 the values in the performance table by ae Correction factor heating capacity 0 99 1 1 02 1 03 the reported coefficients Condenser At different to nominal 3 5 8 10 Correction factor heating capacity 0 9912 1 1 013 1 0227 Correction factor input power 1 0144
25. 07 229 Recommended fuse A 90 80 90 80 110 125 150 150 150 200 200 CHARGE Circuit C1 C2 Ib C1 17 0 17 0 20 5 20 5 23 1 30 9 30 9 46 7 514 51 4 62 4 Refrigerant RA10A H HL Ib C2 17 0 17 0 20 5 20 5 23 1 30 9 30 9 46 7 51 4 51 4 62 4 H HL gal C1 0 9 18 18 18 18 18 18 2 5 2 5 3 0 3 6 gal C2 0 9 0 9 0 9 18 18 18 18 18 2 5 3 0 3 6 COMPRESSOR Quantity Circuit H HL m n 2 2 3 2 3 2 4 2 4 2 4 2 4 2 4 2 4 2 4 2 4 2 EVAPORATOR Quantity n n 1 1 1 1 1 1 1 1 1 1 1 Water content nu gal 3 2 3 2 3 9 3 9 4 4 8 0 8 0 12 0 13 2 13 2 16 1 arer inch 2 1 2 2 1 2 2 1 2 2 1 2 2 1 2 2 1 2 2 1 2 2 1 2 3 3 Victaulic CONDENSER Quantity mn 1 1 1 1 1 1 1 1 1 1 1 Water content mE gal 32 3 2 3 9 3 9 4 4 8 0 8 0 12 0 13 2 13 2 16 1 Water connections inch 2 1 2 2 1 2 2 1 2 2 1 2 2 1 2 2 1 2 2 1 2 2 1 2 3 3 3 Victaulic DESUPERHEATER 3 Recovered heating BTU h 74500 80600 86100 97000 107900 116100 138000 161500 170800 190600 210400 Quantity n n 2 2 2 2 2 2 2 2 2 2 2 Desuperheater water flow gpm 16 5 17 9 19 1 21 5 23 9 25 7 30 6 35 8 37 9 42 3 46 6 Desuperheater pressure H HL PSI 0 1 0 2 0 2 0 2 0 2 0 3 0 3 0 4 0 3 0 4 0 5 drop Weight Ib 50 7 50 7 50 7 50 7 50 7 50 7 50 7 63 9 63 9 63 9 63 9 connections inch 1 1 2 1 1 2 1 1 2 1 1 2 1 1 2 11 2 1 1 2 1 1 2 1 1 2 1 1 2 1 1 2 Victaulic EVAPORATOR PUMPS Input power L P M N kW 2 2 2 2 2 2 2 2 3 0 3 0 4 0 4 0 4 0 4 0 4 0 Input power
26. 0V 10 0 10 0 10 0 13 2 13 2 22 0 22 0 Input current W Z 460V A 5 0 5 0 5 0 6 6 6 6 110 110 110 17 3 17 3 17 3 S75V 4 0 4 0 4 0 5 3 5 3 8 8 8 8 8 8 13 8 13 8 13 8 Available head L P U V Psi 22 0 20 0 18 4 18 0 15 4 21 0 15 7 18 4 21 8 25 2 16 8 Available head W 2 33 8 318 30 2 35 5 30 9 41 2 35 2 28 7 38 0 33 6 28 6 EXPANSION VESSEL Quantity Capacity n gal 1 66 1 66 1 66 1 66 1 66 1 6 6 1 6 6 1 66 1 66 1 66 1 6 Expansion vessel calibration PSI 21 8 21 8 21 8 21 8 21 8 21 8 21 8 21 8 21 8 21 8 21 8 SOUND DATA Sound power L dB A 79 78 79 79 80 80 82 85 87 89 90 Sound pressure dB A 47 46 47 47 48 48 50 53 55 57 58 DIMENSIONS without pumps mm 1885 1885 Hight in 74 2 74 2 800 800 Width L in 31 5 31 5 mm 2090 2420 Length 82 28 95 28 Weight kg 730 791 792 878 887 1030 1073 1265 1569 1676 1826 8 Ib 1609 4 1743 9 1746 1 1935 7 1955 5 2270 8 2365 6 2788 8 3459 1 3694 9 4025 6 DIMENSIONS with 4 pumps mm 1885 1885 Hight in 74 2 74 2 mm 800 800 Width L in 31 5 31 5 mm 2944 3412 Length 115 90 134 33 Weight kg 1120 1180 1181 1294 1329 1549 1566 1873 2250 2357 2507 8 Ib 2469 2 2601 5 2603 7 2852 8 2929 9 3415 0 3452 4 4129 3 4960 4 5196 3 5527 0 1 Performance values refer to cooling mode SOUND POWER Aermec determines sound power values on the basis of measurements made in a
27. 1 0 978 0 9633 8 12 1 FOULING FACTOR Fouling factor K m W 0 00001 0 00002 0 00005 Correction factor cooling capacity 1 0 99 0 98 Correction factor input power 1 1 2 Correction factor heating capacity 1 1 0 99 Correction factor input power 1 l 1 02 PSI 8 10 DESUPERHEATER PRESSU 59 2 RE DROPS J 4 25 The pressure drops the charts refer J 4 average water temperature of 50 C 122 F 115 0500 0550 0600 202 0650 0700 0750 0800 0900 The table 8 13 1 shows the corrections to a j 4 1000 1250 1400 apply to the pressure drops with variationin 2 1250 average water temperature 8 154 104 104 15 05 TUTTO T TGTITTITTCITITETTTIT T 0 2000 4000 6000 8000 10000 12000 14000 16000 18000 20000 I h e Water flow Average water temperature C F 5 41 10 50 15 59 20 68 30 86 40 104 50 122 Correction factor 1 222 1 10 1 08 1 06 1 04 1 02 1 00 Tab 8 13 1 INXWPY 1402 4438856 01 19 8 11 HEATING CAPACITY WITH TOTAL RECOVERY The heating capacity yielded and the input electrical capacity in conditions other than rated conditions are obtained by multiplying the rated values Pt Pa by the respective correction coefficients Cr Ca Diagram Tab 8 14 1 allows you to obtain the correction coefficients corresponding to each curve the temperature of the hot processed water ref
28. 38 8 43 9 47 8 57 4 64 9 73 2 83 6 93 2 Condenser water flow rate 1 gpm 86 15 93 75 100 61 114 84 129 55 145 48 171 58 196 89 220 75 248 59 278 17 Pressure drop at condenser PSI 23 2 8 25 E ES 2 3 9 2g 2 6 32 Evaporator water flow rate gpm 65 58 TAL aly 76 55 86 95 98 00 111 09 130 28 150 20 168 08 188 44 211 12 Evaporator pressure drop PSI L2 1 5 1 6 17 1 2 1 6 13 pS 1 7 ENERGY INDEXES EER L BTU W 16 15 16 60 16 69 16 66 16 54 16 65 15 73 16 20 16 01 15 70 15 87 COP L W W 3 98 3 95 3 97 3 91 3 90 4 02 3 95 4 01 3 98 3 93 3 94 AHRI PART LOAD RATINGS IPLV W W 6 08 6 26 6 29 6 27 6 22 6 26 5 92 6 10 6 03 5 91 5 97 EER 10096 load W W 4 73 4 87 4 89 4 88 4 84 4 87 4 61 4 74 4 69 4 60 4 65 EER 7596 load L W W 5 53 5 69 5 72 5 70 5 65 5 70 5 38 5 54 5 48 5 37 5 43 EER 50 load W W 6 45 6 64 6 67 6 66 6 60 6 65 6 28 6 47 6 39 6 27 6 34 EER 25 load W W 6 72 6 92 6 95 6 93 6 87 6 92 6 54 6 74 6 66 6 53 6 60 ELECTRICAL DATA 230V 3 60Hz power supply Input current cooling i A 94 90 100 107 126 144 188 Input current heating A 106 105 116 126 149 168 214 No pump version LRA A 402 374 414 350 431 471 526 MCA A 140 146 152 158 203 243 264 MOP 5 202 203 214 195 260 300 326 Recommended fuse A 200 200 200 175 250 300 300 Evap cond low head pumps LRA A 418 390 430 368 451 495 553 MCA A 155 161 168 176 223 266 291 MOP A 218 218 230 213 2
29. 47 73 100 NXWO0700 20 42 70 100 NXWO0750 23 47 73 100 NXWO0800 23 48 73 100 NXWO0900 20 48 77 100 NXW1000 23 48 73 100 NXW1250 21 42 70 100 NXW1400 23 48 73 100 Performance values refer to the following conditions Evaporator inlet water temperature 5 C 41 F condenser inlet water temperature 45 C 113 F INXWPY 1402 4438856 01 AE E AERMEC S p A 37040 Bevilacqua VR Italia Via Roma 996 Tel 39 0442 633111 Telefax 0442 93730 39 0442 93566 s air conditioning www aermec com sales aermec com DY 9 U recycled pa Lise Sa papier recy recycled Pa Intertek w Aermec reserves the right to make all modification deemed necessary for improving the product at any time with any modification of technical data AERMEC COMPANY QUALITY SYSTEM me gt UR 180 9001 2008 Cert n 0128 AERMEC S P A
30. 5 87 5 94 EER 100 load W W 4 76 4 88 4 75 4 88 472 4 92 4 66 4 52 4 58 4 57 4 62 EER 7596 load L W W 5 56 5 70 5 68 5 71 5 51 5 75 5 44 5 28 5 35 5 34 5 40 EER 50 load W W 6 49 6 65 6 62 6 66 6 43 6 72 6 35 6 16 6 24 6 23 6 31 EER 25 load W W 6 75 6 93 6 90 6 94 6 70 6 99 6 62 6 42 6 50 6 49 6 57 ELECTRICAL DATA 230V 3 60Hz power supply Input current cooling A 93 89 100 106 126 144 188 Input current heating A 106 105 116 125 149 168 213 No pump version LRA A 402 374 414 350 431 471 526 MCA A 140 146 152 158 203 243 264 MOP A 202 203 214 195 260 300 326 Recommended fuse A 200 200 200 175 250 300 300 Evap cond low head pumps LRA A 418 390 430 368 451 495 553 MCA L A 155 161 168 176 223 266 291 MOP A 218 218 230 213 280 323 353 Recommended fuse A 200 200 225 200 250 300 350 Evap cond high head pumps LRA A 422 394 434 374 458 507 562 MCA A 160 166 172 181 229 278 299 MOP 222 223 234 218 286 335 361 Recommended fuse A 200 200 225 200 250 300 350 ELECTRICAL DATA 460V 3 60Hz power supply Input current cooling i A 42 43 48 53 60 65 85 90 94 107 119 Input current heating A 48 50 55 62 70 76 97 104 109 123 137 No pump version LRA A 210 192 221 87 217 227 270 321 331 391 417 MCA A 68 73 79 87 98 08 128 138 149 177 203 MOP A 97 98 108 07 123 33 157 172 183 224 250 Recommended fuse A 90 90 100 00 110 25 150 150
31. 80 323 353 Recommended fuse A 200 200 225 200 250 300 350 Evap cond high head pumps LRA A 422 394 434 374 458 507 562 MCA 0 160 166 172 181 229 278 299 222 223 234 218 286 335 361 Recommended fuse A 200 200 225 200 250 300 350 ELECTRICAL DATA 460V 3 60Hz power supply Input current cooling L A 42 43 48 53 59 65 85 89 94 60 119 Input current heating A 48 51 55 63 70 76 97 102 109 124 137 No pump version LRA A 210 192 221 187 217 227 270 321 331 391 417 MCA A 68 73 79 87 98 108 128 138 149 177 203 L A 97 98 108 107 123 133 157 172 183 224 250 Recommended fuse A 90 90 100 100 110 125 150 150 175 200 225 Evap cond low head pumps LRA A 218 200 229 196 227 239 284 337 347 409 434 MCA A 76 81 87 96 108 120 141 154 164 195 221 MOP 105 106 116 116 133 145 170 188 198 242 267 Recommended fuse A 100 100 110 110 125 125 150 175 175 225 250 Evap cond high head pumps LRA A 220 202 231 199 230 245 288 343 359 419 445 MCA 78 83 89 99 112 126 146 160 177 206 231 MOP A 107 108 118 119 137 151 175 194 211 252 278 Recommended fuse A 100 100 110 110 125 150 150 175 200 250 250 Reference data AHRI standard In cooling operation 1 In heating operation 2 Evaporator Evaporator Water outlet 6 7 C 44 F Water inlet temperature 10 C 50 F Water 0 043l s per
32. CONDENSER PUMPS Input power L P U V kW 2 2 2 2 2 2 3 0 3 0 4 0 4 0 5 5 5 5 7 5 7 5 Input power W 2 3 0 3 0 3 0 40 4 0 7 5 7 5 75 110 110 10 230V 7 8 7 8 7 8 10 0 10 0 13 2 13 2 Input current U V 460V A 3 9 3 9 3 9 5 0 5 0 6 6 6 6 9 2 9 2 110 10 575V wut 3 1 3 1 3 1 4 0 4 0 5 3 5 3 7 4 7 4 8 8 8 8 230V 10 0 10 0 10 0 13 2 13 2 22 0 22 0 Input current W Z A60V A 5 0 5 0 5 0 6 6 6 6 11 0 11 0 11 0 17 3 17 3 7 3 575V 4 0 4 0 4 0 5 3 5 3 8 8 8 8 8 8 13 8 13 8 3 8 Available head L P U V 9 p i 21 9 20 0 18 9 16 7 13 6 21 2 15 8 19 3 21 2 24 7 6 1 Available head W 2 33 8 318 30 5 35 2 30 6 41 2 35 4 29 7 38 0 33 4 28 3 EXPANSION VESSEL Quantity Capacity Bar n gal 1 66 1 66 1 66 1 66 1 66 1 6 6 1 6 6 1 66 1 66 1 66 1 6 6 Expansion vessel calibration PSI 21 8 21 8 21 8 21 8 21 8 21 8 21 8 21 8 21 8 21 8 21 8 SOUND DATA Sound power B dB A 85 84 85 85 86 86 88 91 93 95 96 Sound pressure dB A 53 52 53 53 54 54 56 59 61 63 64 Sound power ur dB A 79 78 79 79 80 80 82 85 87 89 90 Sound pressure dB A 47 46 47 47 48 48 50 53 55 57 58 DIMENSIONS without pumps mm 1835 1775 1775 1820 Hight in 72 2 69 9 69 9 71 7 4 800 800 800 800 Width 31 5 31 5 31 5 31 5 mm 1790 2410 2410 2410 Lenght in 70 5 94 9 94 9 94 9 eich kg 609 670 706 768 803 958 966 1326 1544 1594 1760 ei l Ib 1342 6 1477 1 1556 5 1693 2 1770 3 2112 0 2129 7 2923 3 3403 9
33. T T T T T T 4 5 6 7 8 9 1 17 6 20 25 30 35 40 45 50 55 60 64 4 F Evaporator output water temperature At 5 C 10 F A B D E F G Condenser Output 25 30 5 40 45 50 55 water temperature F 77 86 95 104 113 122 131 fig 8 4 1 8 5 1 CORRECTION FACTORS FOR AT DIFFERENT FROM THE CHILLER RATED VALUE Evaporator At different to nominal 3 5 8 10 Correction factor cooling capacity 0 99 1 1 02 1 03 Correction factor input power 0 99 al 1 01 1 02 Correction factor heating capacity 0 99 1 1 02 1 03 Condenser At different to nominal 3 5 8 10 Correction factor heating capacity 0 9912 1 1 013 1 0227 Correction factor input power 1 0144 1 0 978 0 9633 8 6 1 FOULING FACTOR Fouling factor K m W 0 00001 0 00002 0 00005 Correction factor cooling capacity 1 0 99 0 98 Correction factor input power 1 1 x Correction factor heating capacity 1 1 0 99 Correction factor input power 1 1 02 INXWPY 1402 4438856 01 8 7 HEATING CAPACITY 1 5 WITH DESUPERHEATER 1 4 The heating capacity yielded in conditions other than rated conditions are obtained 13 by multiplying the rated values Pt Pa by the respective correction coefficients 9 1 2 Cd Diagram Tab 8 10 1 allows you to E E obtain the correction coefficients corre 1 1 sponding to each curve the temperature 83 of
34. TY CONTROL Capacity step control cold Versions 1 2 3 4 NXW0500 52 100 NXW0550 36 77 100 NXWO0600 33 79 100 0650 29 55 79 100 0700 26 49 79 100 0750 29 55 79 100 0800 29 55 79 100 0900 25 55 82 100 NXW1000 29 56 79 100 NXW1250 26 49 76 100 NXW1400 29 55 79 100 Versions 1 2 3 a NXW0500 49 100 0550 28 66 100 0600 26 68 100 0650 23 47 73 100 NXW0700 20 42 70 100 0750 24 48 73 100 0800 23 47 73 100 0900 20 48 77 100 1000 24 48 74 100 1250 21 43 71 100 NXW1400 24 48 74 100 Performance values refer to the following conditions Evaporator inlet water temperature 6 7 C 44 F condenser inlet water temperature 34 7 C 95 F INXWPY 1402 4438856_01 31 32 Capacity step control hot Heating capacity Levels of power Versions 1 2 3 4 NXW0500 51 100 NXWO0550 34 74 100 NXWO0600 31 76 100 NXW0650 27 53 77 100 NXW0700 24 47 74 100 NXWO0750 27 53 77 100 NXWO0800 27 53 77 100 NXWO0900 24 53 80 100 NXW1000 28 53 77 100 NXW1250 24 47 74 100 NXW1400 27 53 77 100 Input power Levels of power Versions 1 2 3 4 NXWO0500 49 100 NXW0550 28 65 100 NXW0600 26 68 100 NXWO0650 23
35. and hygroscopic material able to trap impurities and any traces of humidity in the cooling circuit Liquid separator for E version only Located on the suction point of the compres sor to protect against any flowback of liquid refrigerant flooded start ups operation in the presence of liquid Liquid indicator One per circuit for checking the refrigerant gas load and any humidity in the cooling circuit Thermostatic valve The valve with external equaliser on the output of the evaporator modulates the gas flow to the evaporator in accordance with the heat load in such a way as to assure a sufficient degree of overheating at the intake gas Taps They are located in the liquid and discharge lines and allow to intercept the refrigerant in case of extraordinary maintenance Solenoid valve The valve closes when the compressor turns off preventing the flow of refrigerant gas towards the evaporator 4 2 FRAME Load bearing structure realised in suitably thick heat galvanized steel sheets it is painted with polyester dust to guarantee resistance to atmospheric agents RAL 9002 SOUND PROTECTION COVERING Only silenced versions It is comprised of panels in suitably thick galvanized sheet metal and internally finished with sound proofing material Allows the sound power level emitted from the unit to be reduced by 6 db A 4 3 HYDRAULIC COMPONENTS Flow switch installed on the versions with a pump Its job is to ma
36. ccordance with UNI EN ISO 9614 2 as required for Eurovent certification INXWPY 1402 4438856 01 SOUND PRESSURE Sound pressure in free field at 10 m 32 8ft distance from the external sur face of the unit in accordance with UNI EN ISO 3744 6 2 VERSION H HEAT PUMP WITH WATER SIDE INVERSION VERSION HL HEAT PUMP WITH WATER SIDE INVERSION SILENCED Mod NXW vers U M 0500 0550 0600 0650 0700 0750 0800 0900 1000 1250 1400 Cooling capacity 1 ton 31 88 34 83 37 53 42 59 48 20 53 94 62 36 73 11 82 66 91 79 103 08 Total input power kw 23 7 25 2 27 0 30 7 35 0 38 9 47 6 54 2 62 0 70 2 78 0 Evaporator water flow rate gpm 76 42 83 49 89 97 102 07 115 55 12929 149 44 175 22 198 12 219 98 247 06 Evaporator pressure drop PSI 1 9 22 2 0 2 5 2 8 1 7 2 3 1 9 2 0 2 6 2 6 Condenser water flow rate gpm 95 97 104 85 112 98 128 18 145 11 162 36 187 67 220 05 248 81 276 25 310 27 Pressure drop at condenser PSI 2 6 3 0 2 8 3 5 3 9 2 6 3 3 2 6 3 0 3 8 3 8 Heating capacity 2 BTU h 388700 422800 453900 517800 584400 656100 773900 888000 995600 1121200 1254400 Total input power kW 28 6 31 4 33 4
37. ctors 8 6 FOULING FACTORS The performance levels indicated in table 8 6 1 refer to conditions with clean tubes with a fouling factor 1 For values different from the fouling factor multiply the values in the per formance table by the reported coef ficients Cf Ca COOLING CAPACITY 8 7 6 5 4 3 2 4 0 1 2 3 T 10 11 12 13 14 15 16 17 18 C 14 1 1 3 i 1 2 1 1 1 oet G 104 T ALL 09 i SBE 0 8 o IE g o 0 7 2 5 in 22 06 8 7 0 5 1 0 4 T T 8 7 6 5 4 3 2 4 0 1 2 3 4 5 617 8 9 10 11 12 13 14 15 16 17 18 C 1 ___________________________ 17 6 20 25 30 35 40 45 50 55 60 64 4 F Evaporator output water temperature At 5 C 10 F A B D E F G Condenser Output C 25 30 35 40 45 50 55 water temperature F 77 86 95 104 113 122 131 INPUT POWER IN COOLING MODE 1 5 1 1 4 i o O c 2o 1 3 ea 39 5 4 2 E 97 I 1 2 8 14 M 9 c 2 2 1 10 LL rr ee ee 8 0 9 O E a M A 0 8 0 7 ji T T
38. er T with total heat recovery 13 Power supply 60 230V 3 60Hz with thermomagnetic switches 7 460V 3 60Hz with thermomagnetic switches 8 575V 3 60Hz with thermomagnetic switches 14 Evaporator side pumps 2 H without pumping assembly M low head pump N low head pump and reserve pump high head pump P high head pump and reserve pump 15 Condenser side pumps o Mom lt without pumping assembly low head pump low head pump and reserve pump high head pump high head pump and reserve pump the standard options are shown by the symbol these combinations are not possible YD YT HE HT ET T with evaporator or condenser side pumps U available only for sizes 0500 to 0800 9 evaporator is the heat exchanger that works as such in cooling mode condenser is the heat exchanger that works as such in heating mode INXWPY 1402 4438856 01 4 DESCRIPTION OF COMPONENTS 4 1 COOLING CIRCUIT Compressor Scroll type hermetic compressors fitted with electrical carter compressors heating elements as standard The heating element is powered automatically when the unit is still provided the unit is kept powered up Evaporator Plate type AISI 316 It is insulated externally with closed cell material to reduce thermal dispersions Condensers Plate type AISI 316 It is insulated externally with closed cell material to reduce thermal dispersions Filter drier Of the mechanical cartridge type made of ceramics
39. erred to is reported assuming a difference in water tempera ture between the input and output of the condenser equal to 5 C 10 F KEY Cr Heating capacity correction coefficient Ca Input power correction coefficient 8 12 FORAT DIFFERENT FROM THE RATED VALUE For At different from 5 C 10 F to the evaporator refer to Tab 8 15 1 for the cooling capacity and input power correc tion factors 8 13 FOULING FACTORS The performance levels indicated in table 8 16 1 refer to conditions with clean tubes with fouling factor 1 For values different from the fouling factor multiply the values in the performance table by the reported coefficients 20 INXWPY 1402 4438856 01 HEATING CAPACITY H Cr 5 5 1 n 3 o 1 o 1 0 6 T T t T T T T T T T T T T 1 T T T 8 7 6 5 4 3 2 10 12 3 4 5 617 8 9 10 11 12 13 14 15 16 17 18 1 ad a a a a ar Evaporator output water temperature At 5 C 10 F A B D E F G Condenser Output C 25 30 35 40 45 50 55 water temperature F 77 86 95 104 113 122 131 ABSORBED POWER HEATING 1 2 6 1 1 1 1 4r 1 1 t 4 1 a 1 5 991 5 Doo
40. evice does not in any case cover costs owing to ladder trucks lifts or other lifting systems that may be required in order to carry out repairs under warranty Do not modify or tamper with the chiller as this may cause dangerous situations and the manufacturer shall not be liable for any dam ages The warranty shall not be valid if the indications mentioned above are not observed 1 2 SAFETY PRECAUTIONS AND INSTALLATION chiller must be installed by an author ised and qualified technician in compli ance with the national legislation in force in the country of destination AERMEC shall not be held responsible for any damage whatsoever resulting from the non compliance with these instructions Before starting any work it is necessary TO READ CAREFULLY THE INSTRUCTIONS AND TO PERFORM THE SAFETY CHECKS TO AVOID ANY RISKS All the personnel in charge must be aware of the operations and the risks that may arise when all the unit installation operations begin 2 PRODUCT IDENTIFICATION NXW are identified by the following PACKAGING LABEL that includes the product identification data TECHNICAL PLATE Placed on the right strut side see fig 1 NB If the identification plate or any other means to identify the product is tampered with removed or missing installation and mainte nance operations are hampered 3
41. ference should be made to the dia gram below for the operating limits see table 7 1 1 The diagram for the operating limits is relative to all At on the evaporator and on the condenser of 5 C Inlet Atc Output condenser min 5 max 15 Inlet Ate output difference Evaporator min 3 max 10 7 2 OPERATING LIMIT VERSION E CONDENSERLESS Reference should be made to the dia gram below for the operating limits see table 7 1 1 KEY Operation with glycol Standard operation Standard F 1404 60 1354 4 1304 554 9 1254 1 5 504 amp 1204 S 1 1154 45 4 5 104 g 1 8 1 5 1004 4 5 954 354 5 90 4 3 4 a 854 30 4 5 804 25 4 c 754 4 704 68 20 T T T T T T T T T T 10 5 0 5 10 15 20 C aa a a a a a a a aaa 1415 20 25 30 35 40 45 50 55 60 65 68 F Evaporator outlet water temperature Tab 7 1 1 Condenserless oF 1404 1354 1303 1253 o 1204 1 1154 1 o 1 104 1054 n 1 2 1003 954 o 1 S 904 eo 3 854 034 77 25 T T T T T T T T T T T T T T T T T T T T T T T T T T T T T 10 5 0 5 10 15 20 C COMM a aa a 1415 20 25 30 35 40 45 50 55 60 65 68 F Evaporator outlet water temperature Tab 7 2 1 with standard mechanical thermostatic valve up to 4 C 39 F Y Low water temperatu
42. ge water temperature PRESSURE DROPS TOTAL RECOVERY PSI kPa 29 200 25 1 1150 4 0750 0800 20 4 7 J 9 4 4 9 15 E 100 0700 0900 MEE 0600 0650 1000 1250 1400 104 4 0500 0550 so 5 0 0 10000 20000 30000 40000 50000 60000 70000 80000 90000 100000 110000 120000 130000 1 T T T T I T T T T I T T T T T T T T T T T T T T T T T T T T 0 50 100 150 200 250 300 350 400 450 500 550 572 Water flow rate Average water temperature C F 5 41 10 50 15 59 20 68 30 86 40 104 50 122 Correction factor 1 22 1 10 1 08 1 06 1 04 1 02 1 00 Tab 8 17 1 INXWPY 1402 4438856 01 21 9 TOTAL PRESSURE DROPS 9 1 EVAPORATOR IN COOLING OPERATION The diagram pressure drops are related to an average water temperature of 10 C 50 F Water flow rate I h MIN e MAX NXW Model U M Water flow rate MIN Water flow rate MAX 0500 0800 gpm 34 9 245 7 0900 1400 74 5 531 Lower water flow speed might get some substance deposited in the heat exchanger Higher water flow speed might cause mechanical damages EVAPORATOR PRESSURE DROPS VERSION PSI 17 4 120 15 0800 0900 100 1 0650 0700 804 0750 4 0500 0550 0600 amp 104 1000 1250 5 1400
43. ke sure that there is water circu lation in the evaporator If this is not the case it shuts down the unit NOTE In the heat pump vesion there is a second flow switch condenser side Circulation pump Condenser Evaporator Depending on the characteristics of the pump chosen it offers a useful head to overcome the pressure drops in the system There is also the possibility to have a reserve pump The reserve pump is managed by the electronic card Water filter versions standard NOT INCLUDED versions with a pumps INCLUDED Allows you to block and eliminate any impuri ties in the hydraulic circuits Inside it has a filtering mesh with holes not greater than one millimetre It is indispensable to avoid serious damage to the plate heat exchanger NB The filter protects only the exchang ers in case of particularly dirty water we recommend an external filter to protect the pumps Drain valve versions with water accumulator or pump Of the automatic type assembled on the upper part of the hydraulic system it releases any air bubbles that may be present in the system Expansion tank 6 6gal standard in the version with pump With nitrogen pre load membrane In the version is positioned on the evaporator while in the version H is positioned on the heat exchanger that works as evaporator in cooling mode SAFETY AND CONTROL COMPONENTS Low pressure transducer Allows displaying on the microprocessor board dis
44. l on board the machine itself NXW machi nes can also be equiped with an external PGD1 remote control terminal PGD1 remote terminals provide the same fun ctions as the on board terminals keyboard controls and display PGD1 terminals can be installed at distan ces of up to 1 km from the machine up to 164ft with telephone cable AWG24 for distances of over 50 metres ensure that the 2nd extension card is powered by a voltage between 21 and 30 V dc 5 2 GENERAL ACCESSORIES AVX spring anti vibration supports 2 26 CIRCUIT 1 a CIRCUIT 2 BOARD AER485P1 COMPATIBILITY OF ACCESSORIES NXW 0500 0550 0650 0700 0750 0800 0900 1000 1250 1400 AER485P1 Through this accessory it is possible to connect the unit with BMS supervision systems with electrical standard RS 485 and MODBUS type protocol ALL e REMOTE CONTROL TERMINAL PGD1 PGD1 e e AVX Spring antivibration support for more information about compatibility contact us INXWPY 1402 4438856_01 9 6 TECHNICAL DATA 6 1 VERSION L SILENCED
45. parameter presets are stored permanently in the controller s FLASH memory to ensure that they are kept in memory even when the system is not powered without the need for an auxiliary battery The connection to the serial supervision assistance line in accordance with the RS485 standard is performed through the serial boards ACCESSORY RS485P1 and the commu nication protocol The terminal which is always controlled by microprocessor is equipped with a display a keypad and a set of LEDs and is used for programming check parameters Set Points differential band alarm threshold and for fundamental user operations ON OFF display of controlled values The terminal does not need to be connected to the PGD1 for normal controller operation and is necessary only when initially programming the basic parameters Microprocessor Multilingual menu Phase sequence control Independent control of individual com pressors Ammetric transformer Cumulative failure block signalling Alarm log function Daily weekly programming Inlet outlet water temperature display Alarm display Full proportional regulation of the output water temperature INXWPY 1402 4438856 01 7 8 Programmable timer function Interfaceability with the Modbus protocol accessory Control and management of pump s rota tion Compressor rotation control Analogue input from 4 to 20 mA Always Working function In ca
46. play the value of the compressor s suction pressure one per circuit on the low pressure side of the cooling circuit High pressure transducer Allows displaying on the microprocessor board display the value of the compressor s delivery pressure one per circuit On the high pressure side of the cooling circuit High pressure switch Factory calibrated it is placed on the high pres sure side of the cooling circuit it shuts down compressor operation in the case of abnormal operating pressure Cooling circuit safety valves HP Calibrated at 653psi HP they cut in relieving the overpressure in the case of abnormal operating pressures Thermomagnetic switches to protect the compressors 4 4 ELECTRICAL COMPONENTS Electrical panel Contains the power section and the manage ment of the controls and safety devices Door block disconnecting switch It is possible to access the electrical panel by disconnecting the voltage then using the open ing lever of the panel itself This lever can be blocked with one or more padlocks during main tenance in order to prevent the machine being powered up accidentally Control keypad Provides full control functions NB For a more detailed description refer to the user manual 4 5 ELECTRONIC REGULATION Electronic regulation on the NXW chillers consists of a control board and a control panel with display On each board transducers loads and alarms are connected The programme and
47. r equal to 5 C 10 F eel oM FL Condenser Output 25 30 35 40 45 50 55 water temperature F 77 86 95 104 113 122 131 KEY Ct Heating capacity correction ABSORBED POWER HEATING coefficient 13 1 Ca Input power correction coef e ficient 44 4 8 1 3 4 55 D 82 FOR AT DIFFERENT FROM THE oi 22 RATED VALUE n me Me 9 0 83 For At different from 5 C 10 F to the 0 7 5 evaporator refer to Tab 8 2 1 for the 2 cooling capacity and input power cor 88 3 8 5 4 3 2 4 0 1 2 3 4667 9 40 M4 12 13 14 15 46 17 48 C rection factors 17 6 20 25 30 35 40 45 50 55 60 64 4 F 8 3 FOULING FACTORS Evaporator output water temperature At 5 C 10 F The performance levels indicated in table 8 3 1 refer to conditions with E E S clean tubes with a fouling factor 1 Condenser Output C 25 30 35 40 45 50 55 For values different from the fouling eee 77 86 95 104 113 122 131 factor multiply the values in the per m formance table by the reported coef 7 ficients 8 2 1 CORRECTION FACTORS FOR AT DIFFERENT FROM THE CHILLER RATED VALUE Evaporator At different to nominal C F 3 5 5 10 8 14 10 18
48. re mechanical thermostatic valve down to 4 C 39 F up to 8 C 18 F X Electronic thermostatic valve also for low water temperature up to 8 C 18 F 8 3 DESIGN DATA HIGH PRESSURE SIDE LOW PRESSURE SIDE Maximum allowable pressure PSI 653 435 Maximum temperature allowable F 248 124 Minimum temperature allowable F 22 22 16 INXWPY 1402 4438856_01 8 CORRECTIVE FACTOR 8 1 HEATING CAPACITY AND IN HEATING CAPACITY PUT POWER 15 HEAT PUMP VERSIONS IN Me HEATING MODE 12 i EET The heating capacity yielded and the input electrical capacity in condi 52 5 d eee es a rep uu eee e S595 tions other than rated conditions are 858 5 w 2 obtained by multiplying the rated val 0 94 2E 2 3 ues Pt Pa by the respective correction s i 3 5 E e o 1 co coefficients Ct Ca 868 4 0 7 Diagram Tab 8 1 1 allows you to 1 obtain the correction coefficients er a a 8 7 6 5 4 3 2 4 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 C responding to each curve the tem 1 EIE A Ene poen perature of the hot processed water 176 20 25 30 35 40 45 50 55 60 64 4 F referred to is reported assuming a dif Evaporator output water temperature At 5 C 10 F ference in water temperature between the input and output of the condense
49. se of critical conditions the machine does not arrest but is able to self adjust itself and provide maximum output power in those conditions Self adapting operating differential Switching Histeresys to ensure correct compressor operation at all times even in plants with a low water content or insuf ficient flow rates This system reduces the compressor wear The PDC Pull Down Control system to prevent the activation of the power steps when the water temperature is approach ing the set point quickly It optimises the operation of the machine both when running normally or when there are load variations thereby assuring top machine efficiency in all situations For further information refer to the user manual INXWPY 1402 4438856 01 Example of NXW version 7 m a WAY V 7 HYDRAULIC CIRCUIT KEY Condenser Evaporator plate type exchangers Flow switch Filter Pump Expansion tank oO The Victaulic joints and the soldering studs for the condenser and evaporator are provided 5 1 ACCESSORIES ELECTRIC REGULATION ACCESSORIES AER485P1 Through this accessory it is possible to connect the unit with BMS supervision systems with electrical standard RS 485 and MODBUS type protocol NOTE disclosure must be provided for com ELECTRONIC REGULATION DIAGRAM pressor No 1 PGD1 In addition to the control termina
50. the condenser for total recovery of the dis sipated heat Condenser Standard Condenserless E on demand 3 3 AVAILABLE VERSIONS NXW range chillers are available in 11 sizes By combining the wide variety of avail able options it is possible to configure each model in the NXW range in such a way as to meet the most varied system requirements To make installation easier the machine can be provided with an hydronic kit evaporator and hydronic kit condenser optimising spaces times and installation costs The following configurator shows the methods by which the commercial code of 15 fields that make it up representing the options available is compiled INXWPY 1402 4438856 01 5 6 3 4 DESCRIPTION AND CHOICE OF THE UNIT 123 4567 8 9 10 11 12 13 14 15 NXW 0650 o o o o o o o o Field 123 Code NXW 4567 Size 0500 0550 0600 0650 0700 0750 0800 0900 1000 1250 1400 8 Field of use Standard mechanical thermostatic valve 4 39 Y Low water temperature mechanical thermostatic valve down to 4 C 39 F up to 8 C 18 F X Electronic thermostatic valve also for low water temperature up to 8 C 18 F 9 Model heat pump with water side inversion H heat pump with gas side cycle inversion 10 Version L silenced 11 Evaporator standard E condenserless technical data on demand 12 Heat recovery without recovery units D with desuperheat

NXW Technical Manual

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