CWW/K 31÷151
Water cooled liquid Chillers and Heat Pumps with Rotary/Scroll compressor and plate exchangers
The CWW/K 15÷151 liquid Chillers and Heat Pumps, with R410A refrigerant, are designed for small and medium domestic or industrial systems which require medium-low power, space-saving units and quiet operation. These units are ideal for indoor installation and, equipped with a self-contained structure, they reduce the overall dimensions to a minimum while making installation and maintenance operations easier.
These units can be combined with Fan Coil units or with intermediate heat exchangers for process cooling applications.
Equipped with prepainted plate structure, Scroll compressor and plate exchangers, these units have cooling and hydraulic circuits complete with everything necessary for quick installation and high energy efficiency, even in tank and pump version.
A wide range of accessories, factory fitted or supplied separately, complete the outstanding versatility and functionality of the series.
Cooling only units are not compliant to ErP 2021 Regulations for comfort cooling application. Heat Pump units are compliant to ErP Regulations.
Features
- Self-supporting prepainted steel frame.
- Scroll compressor with internal overheat protection and crankcase heater, if needed.
- Condenser AISI 316 stainless steel braze welded plates type, with pressostatic valve.
- Evaporator AISI 316 stainless steel braze welded plates type, complete with water differential pressure switch.
- R410A refrigerant.
- Water circuit for SP version includes: insulated tank, circulating pump, safety valve, gauge and expansion vessel.
- Electrical board includes: main switch with door lock device, fuses, compressor and pump remote control switch.
- Microprocessor control and regulation system.
Accessories
Factory fitted accessories
- PV Pressure valve (for cooling only versions)
- VV Pressure valve and solenoid valve (for WP versions)
- BT Low water temperature kit
- PS Single circulating pump
- GS Single circulating pump gasket for glycol >30%
- FE Antifreeze heater for evaporator
- FA Antifreeze heater for tank
Loose accessories
- CR Remote control panel
- IS Modbus RTU protocol, RS485 serial interface
- AG Rubber shock absorbers
Technical data
| 31 | 41 | 51 | 61 | 71 | 81 | 91 | 101 | 131 | 151 | |||
| Cooling | Cooling capacity (1) | kW | 9,6 | 11,6 | 14,3 | 17,1 | 20,0 | 23,0 | 27,7 | 33,6 | 39,7 | 49,2 |
| Absorbed power (1) | kW | 2,3 | 2,9 | 3,4 | 4,1 | 4,8 | 5,5 | 6,8 | 7,9 | 9,3 | 11,5 | |
| EER (1) | 4,17 | 4,00 | 4,21 | 4,17 | 4,17 | 4,18 | 4,07 | 4,25 | 4,27 | 4,28 | ||
| Cooling (EN14511) | Cooling capacity (1) | kW | 9,5 | 11,5 | 14,2 | 17,0 | 19,8 | 22,8 | 27,5 | 33,3 | 39,4 | 48,8 |
| Absorbed power (1) | kW | 2,5 | 3,2 | 3,7 | 4,4 | 5,2 | 6,0 | 7,4 | 8,7 | 10,1 | 12,1 | |
| EER (1) | 3,78 | 3,58 | 3,80 | 3,86 | 3,79 | 3,79 | 3,72 | 3,83 | 3,92 | 4,03 | ||
| Heating | Heating capacity (2) | kW | 12,5 | 14,9 | 17,5 | 20,8 | 24,3 | 28,4 | 33,8 | 39,8 | 47,0 | 59,5 |
| COP (2) | 4,17 | 4,26 | 4,07 | 3,85 | 3,98 | 4,06 | 4,12 | 3,94 | 4,02 | 4,13 | ||
| Compressor | Type | Scroll | Scroll | Scroll | Scroll | Scroll | Scroll | Scroll | Scroll | Scroll | Scroll | |
| Quantity | N° | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| Evaporator | Water flow | l/s | 0,46 | 0,55 | 0,68 | 0,82 | 0,96 | 1,10 | 1,32 | 1,61 | 1,90 | 2,35 |
| Pressure drops | kPa | 30 | 45 | 42 | 29 | 40 | 47 | 48 | 60 | 49 | 54 | |
| Water connections | "G | 1" | 1" | 1" | 1" | 1" | 1" | 1" | 1" | 1" | 1" | |
| Condenser | Water flow | l/s | 0,14 | 0,17 | 0,21 | 0,25 | 0,30 | 0,34 | 0,41 | 0,50 | 0,58 | 0,73 |
| Pressure drops | kPa | 8 | 10 | 5 | 8 | 10 | 13 | 20 | 21 | 22 | 22 | |
| Water connections | "G | 1" | 1" | 1" | 1" | 1" | 1" | 1" | 1" | 1" | 1" | |
| Electrical characteristics | Power supply | V/Ph/Hz | 230/1/50 | 230/1/50 | 400/3+N/50 | 400/3+N/50 | 400/3+N/50 | 400/3+N/50 | 400/3+N/50 | 400/3+N/50 | 400/3+N/50 | 400/3+N/50 |
| Max. running current | A | 16 | 22 | 9 | 11 | 14 | 15 | 18 | 20 | 23 | 29 | |
| Max. starting current | A | 75 | 86 | 50 | 71 | 74 | 74 | 142 | 142 | 147 | 197 | |
| Unit SP versions | Water flow | l/s | 0,46 | 0,55 | 0,68 | 0,82 | 0,96 | 1,10 | 1,32 | 1,61 | 1,90 | 2,35 |
| Pump available static pressure | kPa | 50 | 35 | 128 | 131 | 100 | 93 | 187 | 160 | 131 | 155 | |
| Tank water volume | L | 50 | 50 | 50 | 50 | 50 | 50 | 100 | 100 | 100 | 100 | |
| Water connections | "G | 1" | 1" | 1" | 1" | 1" | 1" | 1" | 1" | 1" | 1" | |
| Sound pressure | STD/SP version (3) | dB(A) | 41 | 43 | 43 | 44 | 45 | 47 | 49 | 49 | 50 | 50 |
| Weights | Operating weight (4) | kg | 97 | 100 | 104 | 108 | 110 | 112 | 212 | 221 | 227 | 243 |
| Transport weight (4) | kg | 96 | 99 | 102 | 106 | 108 | 110 | 209 | 218 | 224 | 240 | |
| Weight STD versions | Transport weight (4) | kg | 87 | 90 | 93 | 96 | 98 | 100 | 190 | 198 | 204 | 218 |
| Heating (EN14511) | Heating capacity (2) | kW | 11,9 | 13,7 | 17,1 | 19,7 | 22,5 | 26,3 | 31,8 | 37,9 | 44,5 | 56,4 |
| Absorbed power (2) | kW | 3,7 | 3,9 | 4,5 | 5,6 | 6,3 | 7,2 | 8,9 | 10,8 | 12,4 | 15,2 | |
| COP (2) | 3,25 | 3,56 | 3,81 | 3,50 | 3,59 | 3,67 | 3,56 | 3,50 | 3,58 | 3,71 | ||
| SCOP (5) | 4,31 | 4,38 | 4,34 | 3,95 | 4,05 | 4,05 | 4,31 | 3,94 | 4,18 | 4,28 | ||
| Energy Efficiency (5) | % | 164 | 167 | 166 | 150 | 154 | 154 | 164 | 150 | 159 | 163 | |
| Energy Class (6) | A++ | A++ | A++ | A+ | A++ | A++ | A++ | A+ | A++ | A++ | ||
Dimensions
| 31 | 41 | 51 | 61 | 71 | 81 | 91 | 101 | 131 | 151 | |||
| L | STD | mm | 550 | 550 | 550 | 550 | 550 | 550 | 550 | 550 | 550 | 550 |
| SP | mm | 550 | 550 | 550 | 550 | 550 | 550 | 1100 | 1100 | 1100 | 1100 | |
| W | STD/SP | mm | 550 | 550 | 550 | 550 | 550 | 550 | 550 | 550 | 550 | 550 |
| H | STD/SP | mm | 1200 | 1200 | 1200 | 1200 | 1200 | 1200 | 1200 | 1200 | 1200 | 1200 |
Notes
- 1 Chilled water from 12 to 7 °C, water temperature at the condenser from 15 to 35 °C.
- 2 Heated water from 40 to 45 °C, water temperature at the evaporator from 15 to 10 °C.
- 3 Sound pressure level measured in free field conditions at 1 m from the unit. According to ISO 3744.
- 4 Unit without tank and pump.
- 5 Seasonal energy efficiency of heating at low temperature with average climatic conditions. According to EU Regulation n. 813/2013.
- 6 Seasonal energy efficiency class of heating at low temperature with average climatic conditions. According to EU Regulation n. 811/2013.
- N.B. (1) Weights of WP versions are specified on technical brochure.