TWA 332÷1822 VV/Y/A
High efficiency air cooled liquid Chillers and Heat Pumps with axial fans, (Inverter) Screw compressors and shell and tube exchanger
The TWA 332÷1822 VV/Y/A units, with R134a refrigerant, have extremely high efficiency levels due to reduced electrical absorption and a high efficiency of the compressor-exchanger combination.
Are available as option the new EC Inverter fans with high available static pressure and efficiency.
The cooling only models 1302÷1702 are compliant to the ErP 2021 Regulation. Cooling only models 1902÷6002 are compliant to the ErP 2021 Regulation for process cooling application; for comfort cooling application they are compliant with EC or ECH accessory (EC Inverter fans). Heat Pump models 1302÷2002 are compliant to the ErP Regulation; models 2602÷6002 are compliant if provided with EC or ECH accessory (EC Inverter fans).
On request, units can be supplied with R513A refrigerant.
Versions
- TWA - Cooling only
- TWA/MC - Cooling only with MICROCHANNEL condensing coils
- TWA/WP - Reversible Heat Pump
- TWA/SSL - Super silenced cooling only
- TWA/MC/SSL - Super silenced cooling only with MICROCHANNEL condensing coil
- TWA/WP/SSL - Super silenced reversible Heat Pump
Power range
- 263-1533 kW
- 75.0-436 Ton
Features
- Structure with supporting frame, made of galvanised sheet metal with additional protection provided by polyester powder coating.
- Screw compressors with built-in oil separator, suction filter, crankcase heater, oil sight glass, thermal protection and stepless capacity steps.
- Axial fans directly coupled to an electric motor with external rotor.
- Condenser made of copper tube and aluminum finned coils or aluminium MICROCHANNEL coils.
- Shell and tube evaporator with two independent circuits on the refrigerant side and one on the water side, complete with water differential pressure switch.
- Cooling circuit shut-off valves on discharge and liquid line.
- Electronic expansion valve.
- Electronic high and low pressure gauges.
- R134a refrigerant. On request R513A refrigerant.
- Electrical board includes: main switch with door safety interlock, fuses, thermal protection relays for compressors and thermocontacts for fans.
- Condensing Control is included: electronic proportional device that ensures efficient and continuous functioning of the unit with outside air temperature down to 0 °C in cooling mode. It also allows to reduce the sound level especially at night. It consists of a fans speed controller with continuous speed regulation and high and low pressure transducers on cooling circuit.
- Functioning in heating mode with outside air temperature down to -10 °C.
- Microprocessor control and regulation system.
Accessories
Factory fitted accessories
- IM Automatic circuit breakers
- RE Adjustable minimum/maximum voltage and phase control relay
- SL Unit silencement
- DSV Double relief safety valve with changeover switch on the high pressure side for each refrigerant circuit
- DSVHL Double relief safety valve with changeover switch on the high and on the low pressure side of each refrigerant circuit
- CC Condensing control down to -20 °C
- BT Low water temperature kit
- EC EC Inverter fans
- ECH EC Inverter fans with high available static pressure
- HR Desuperheater
- HRT/S Total heat recovery in series
- HRT/P Total heat recovery in parallel
- TX Coil with pre-coated fins
- TXB Coil with epoxy treatment
- EW External water connections
- SP Inertial tank
- PU Single circulating pump
- PUI Inverter single circulating pump
- PD Double circulating pump
- PDI Inverter double circulating pump
- SPU Inertial tank and single circulating pump
- SPUI Inertial tank and Inverter single circulating pump
- SPD Inertial tank and double circulating pump
- SPDI Inertial tank and Inverter double circulating pump
- GS Single circulating pump gasket for glycol >30%
- GD Double circulating pump gaskets for glycol >30%
- FE Antifreeze heater for evaporator
- FX Antifreeze heater for evaporator and pipes
- FB Antifreeze heater for evaporator/tank
- FQ Antifreeze heater on evaporator/tank and pipes
- FZ Antifreeze heater for evaporator, single pump and pipes
- FH Antifreeze heater for evaporator, double pump and pipes
- FU Antifreeze heater for evaporator/tank, single pump and pipes
- FD Antifreeze heater for evaporator/tank, double pump and pipes
- II Inverter on one compressor and soft start for other compressors
- ID Inverter on all compressors
- SS Soft start
- WM Web Monitoring - Wireless remote monitoring (GPRS/EDGE/4G/TCP-IP)
- IS Modbus RTU protocol, RS485 serial interface
- IST Modbus TCP/IP protocol, Ethernet port
- ISB BACnet MSTP protocol, RS485 serial interface
- ISBT BACnet IP protocol, Ethernet port
- ISS SNMP protocol, Ethernet port
- IAV Remote set-point, 0-10V signal
- IAA Remote set-point, 4-20mA signal
- IAS Remote signal for second set-point activation
- IDL Demand limit from digital input
- CP Potential free contacts
- MN High and low pressure gauges
Loose accessories
- CR Remote control panel
- RP Coils protection metallic guards
- FP Coils protection metallic guards with filter
- AG Rubber shock absorbers
- AM Spring shock absorbers
- FL Flow switch
Technical data
| 332 | 352 | 402 | 462 | 482 | 602 | 742 | 912 | 1202 | 1342 | 1522 | 1702 | 1822 | |||
| Cooling STD versions | Cooling capacity (1) | kW | 263 | 313 | 359 | 413 | 464 | 574 | 696 | 839 | 959 | 1136 | 1264 | 1398 | 1533 |
| Absorbed power (1) | kW | 82 | 96 | 114 | 131 | 146 | 179 | 219 | 256 | 305 | 352 | 380 | 440 | 480 | |
| EER (1) | 3,21 | 3,26 | 3,15 | 3,15 | 3,18 | 3,21 | 3,18 | 3,28 | 3,14 | 3,23 | 3,33 | 3,18 | 3,19 | ||
| Cooling STD versions (EN14511) | Cooling capacity (1) | kW | 263 | 313 | 358 | 412 | 463 | 573 | 695 | 838 | 958 | 1135 | 1263 | 1397 | 1532 |
| EER (1) | 3,17 | 3,22 | 3,10 | 3,11 | 3,14 | 3,17 | 3,14 | 3,24 | 3,11 | 3,19 | 3,29 | 3,14 | 3,15 | ||
| SEER (2) | 4,13 | 4,25 | 4,22 | 4,36 | 4,39 | 4,44 | 4,33 | 4,47 | 4,53 | 4,43 | 4,41 | 4,45 | 4,47 | ||
| Energy Efficiency (2) | % | 162 | 167 | 166 | 171 | 173 | 175 | 170 | 176 | 178 | 174 | 173 | 175 | 176 | |
| SEER with EC or ECH accessory (2) | 4,58 | 4,66 | 4,55 | 4,73 | 4,74 | 4,77 | 4,65 | 4,86 | 4,85 | 4,69 | 4,74 | 4,71 | 4,73 | ||
| Energy Efficiency with EC or ECH accessory (2) | % | 180 | 183 | 179 | 186 | 187 | 188 | 183 | 191 | 191 | 185 | 187 | 185 | 186 | |
| Cooling MC versions | Cooling capacity (1) | kW | 263 | 313 | 359 | 413 | 464 | 574 | 696 | 839 | 959 | 1136 | 1264 | 1398 | 1533 |
| Absorbed power (1) | kW | 80 | 94 | 112 | 128 | 143 | 175 | 215 | 251 | 299 | 345 | 372 | 431 | 470 | |
| EER (1) | 3,29 | 3,33 | 3,21 | 3,23 | 3,24 | 3,28 | 3,24 | 3,34 | 3,21 | 3,29 | 3,40 | 3,24 | 3,26 | ||
| Cooling MC versions (EN14511) | Cooling capacity (1) | kW | 263 | 313 | 358 | 412 | 463 | 573 | 695 | 838 | 958 | 1135 | 1263 | 1397 | 1532 |
| EER (1) | 3,25 | 3,29 | 3,15 | 3,18 | 3,20 | 3,25 | 3,20 | 3,31 | 3,17 | 3,25 | 3,36 | 3,20 | 3,21 | ||
| SEER (2) | 4,14 | 4,26 | 4,23 | 4,34 | 4,39 | 4,43 | 4,33 | 4,48 | 4,53 | 4,42 | 4,41 | 4,46 | 4,47 | ||
| Energy Efficiency (2) | % | 163 | 167 | 166 | 171 | 173 | 174 | 170 | 176 | 178 | 174 | 173 | 175 | 176 | |
| SEER with EC or ECH accessory (2) | 4,14 | 4,26 | 4,23 | 4,34 | 4,39 | 4,43 | 4,33 | 4,48 | 4,53 | 4,42 | 4,41 | 4,46 | 4,47 | ||
| Energy Efficiency with EC or ECH accessory (2) | % | 163 | 167 | 166 | 171 | 173 | 174 | 170 | 176 | 178 | 174 | 173 | 175 | 176 | |
| Heating STD versions | Heating capacity (3) | kW | 272 | 324 | 372 | 428 | 480 | 594 | 721 | 869 | 993 | 1176 | --- | --- | --- |
| Absorbed power (3) | kW | 81,0 | 95,0 | 113 | 129 | 143 | 177 | 218 | 253 | 302 | 348 | --- | --- | --- | |
| COP (3) | 3,36 | 3,42 | 3,30 | 3,32 | 3,36 | 3,35 | 3,31 | 3,43 | 3,29 | 3,38 | --- | --- | --- | ||
| Heating STD versions (EN14511) | Heating capacity (3) | kW | 273 | 324 | 373 | 429 | 481 | 595 | 722 | 870 | 994 | 1177 | --- | --- | --- |
| COP (3) | 3,33 | 3,40 | 3,26 | 3,29 | 3,33 | 3,32 | 3,26 | 3,39 | 3,24 | 3,32 | --- | --- | --- | ||
| SCOP (4) | 3,20 | 3,32 | 3,34 | 3,33 | 3,32 | 3,34 | 3,32 | 3,36 | 3,32 | 3,36 | --- | --- | --- | ||
| Energy Efficiency (4) | % | 125 | 130 | 131 | 130 | 130 | 131 | 130 | 131 | 130 | 131 | --- | --- | --- | |
| Compressor | Quantity | n° | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Refrigerant circuits | n° | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | |
| Capacity steps | n° | Stepless | Stepless | Stepless | Stepless | Stepless | Stepless | Stepless | Stepless | Stepless | Stepless | Stepless | Stepless | Stepless | |
| Evaporator | Water flow | l/s | 12,54 | 14,92 | 17,11 | 19,68 | 22,11 | 27,36 | 33,17 | 39,99 | 45,71 | 54,14 | 60,24 | 66,63 | 73,06 |
| Pressure drops | kPa | 30 | 26 | 49 | 44 | 34 | 28 | 42 | 34 | 39 | 48 | 38 | 46 | 59 | |
| Water connections | DN | 125 | 125 | 150 | 150 | 150 | 150 | 150 | 200 | 200 | 200 | 250 | 250 | 250 | |
| Electrical characteristics | Power supply | V/Ph/Hz | 400/3/50 | 400/3/50 | 400/3/50 | 400/3/50 | 400/3/50 | 400/3/50 | 400/3/50 | 400/3/50 | 400/3/50 | 400/3/50 | 400/3/50 | 400/3/50 | 400/3/50 |
| Unit with tank and pump | Pump available static pressure | kPa | 145 | 150 | 170 | 155 | 185 | 175 | 175 | 160 | 130 | 90 | 140 | 95 | 180 |
| Tank water volume | l | 2000 | 2000 | 2000 | 2000 | 2000 | 2000 | 3000 | 3000 | --- | --- | --- | --- | --- | |
| Water connections | DN | 100 | 100 | 100 | 125 | 125 | 150 | 150 | 150 | 200 | 200 | 200 | 200 | 200 | |
| Sound pressure | STD versions (5) | dB(A) | 76 | 75 | 76 | 75 | 76 | 75 | 76 | 77 | 76 | 77 | 78 | 78 | 79 |
| STD versions with SL accessory (5) | dB(A) | 72 | 72 | 73 | 72 | 73 | 72 | 73 | 74 | 73 | 74 | 75 | 75 | 76 | |
| SSL versions (5) | dB(A) | 65,0 | 65,0 | 65,0 | 64,0 | 66,0 | 66,0 | 67,0 | 67,0 | 67,0 | 68,0 | --- | --- | --- | |
| MC versions (5) | dB(A) | 75 | 75 | 75 | 75 | 76 | 75 | 76 | 76 | 76 | 77 | 77 | 77 | 78 | |
| MC versions with SL accessory (5) | dB(A) | 72 | 72 | 72 | 72 | 73 | 72 | 73 | 73 | 73 | 74 | 74 | 74 | 75 | |
| MC/SSL versions (5) | dB(A) | 65,0 | 65,0 | 65,0 | 64,0 | 65,0 | 65,0 | 66,0 | 67,0 | 67,0 | 67,0 | --- | --- | --- | |
| Weights | Transport weight (6) | kg | 3562 | 3609 | 3708 | 4207 | 4782 | 5202 | 6496 | 7430 | 7484 | 8773 | 9640 | 10380 | 10800 |
| Operating weight (6) | kg | 3690 | 3740 | 3850 | 4390 | 5070 | 5540 | 6790 | 8070 | 8170 | 9230 | 10160 | 10890 | 11270 | |
Dimensions
| 332 | 352 | 402 | 462 | 482 | 602 | 742 | 912 | 1202 | 1342 | 1522 | 1702 | 1822 | |||
| L | STD-MC | mm | 4400 | 4400 | 5000 | 5550 | 6200 | 6700 | 8900 | 11100 | 11100 | 11100 | 13400 | 13400 | 13400 |
| SSL-MC/SSL | mm | 5550 | 5550 | 5550 | 6700 | 8900 | 8900 | 11100 | 11100 | 11100 | 13400 | --- | --- | --- | |
| WP | mm | 5550 | 5550 | 5550 | 7750 | 7750 | 8900 | 10050 | 13400 | 13400 | 13400 | --- | --- | --- | |
| WP/SSL | mm | 7750 | 7750 | 7750 | 8900 | 10050 | 10050 | 13400 | 13400 | 13400 | --- | --- | --- | --- | |
| W | STD-SSL-MC-MC/SSL | mm | 2200 | 2200 | 2200 | 2200 | 2200 | 2200 | 2200 | 2200 | 2200 | 2200 | 2200 | 2200 | 2200 |
| H | STD-MC | mm | 2100 | 2100 | 2100 | 2100 | 2100 | 2100 | 2100 | 2100 | 2100 | 2500 | 2500 | 2500 | 2500 |
| SSL-MC/SSL | mm | 2100 | 2100 | 2100 | 2100 | 2100 | 2100 | 2100 | 2500 | 2500 | 2500 | --- | --- | --- | |
| WP | mm | 2100 | 2100 | 2100 | 2100 | 2100 | 2100 | 2100 | 2100 | 2100 | 2500 | --- | --- | --- | |
| WP/SSL | mm | 2100 | 2100 | 2100 | 2100 | 2100 | 2100 | 2100 | 2500 | 2500 | --- | --- | --- | --- | |
Notes
- 1 Chilled water from 12 to 7 °C, ambient air temperature 35 °C.
- 2 Seasonal energy efficiency of cooling at low temperature. According to EU Regulation n. 2016/2281.
- 3 Heated water from 40 to 45 °C, ambient air temperature 7 °C d.b./6 °C w.b.
- 4 Seasonal energy efficiency of heating at low temperature with average climatic conditions. According to EU Regulation n. 811/2013.
- 5 Sound pressure level measured in free field conditions at 1 m from the unit. According to ISO 3744.
- 6 Unit without tank and pump.
- N.B. (1) Weights of SSL and WP versions are specified on technical brochure.
- N.B. (2) Data of MC versions are specified on technical brochure.