

CHA-M/K 724÷1306
Aircooled liquid Chillers and Heat Pumps with axial fans, Scroll compressors and shell and tube exchanger







The models of NEXTPOWER range are dedicated to conditioning of medium and wide areas. The intelligent control module optimizes functioning times and supplied power from compressors based on heat load demands in the system.
The range is equipped with R410A refrigerant and features Scroll compressors and shell and tube exchanger.
High reliability is the key plus of NEXTPOWER, thanks to the use of components built in large series and the management of several compressors allowing an increased compressor life span and the reduction of machine stopping risks: a faulty compressor will not compromise the functioning of the unit, that will continue to work with decreased power levels. The optional Air Section Divider allows to service one circuit without stopping the whole unit.
NEXTPOWER obtains high energy yield with high ESEER/IPLV values and excellent silent
functioning, since the fans adjust their speed to the actual system load, providing benefits
in terms of silent operation, important especially at night.
NEXTPOWER, thanks to the high partialization and the intelligent control module, doesn't require inertial storage tank.
Versions
- CHA-M/K - Cooling only
- CHA-M/K/WP - Reversible Heat Pump
Power range
- 222-517 kW
- 63.0-147 Ton
Features
- Structure with supporting frame, made of galvanised sheet metal with additional protection provided by polyester powder coating.
- Scroll compressors with oil sight glass, internal overheat protection and crankcase heater.
- Axial fans directly coupled to an electric motor with external rotor.
- Condenser made of copper tubes and aluminium finned coils.
- Shell and tube type evaporator, with two independent circuits on the refrigerant side and one on the water side.
- Electronic expansion valve.
- R410A refrigerant.
- Electrical board includes: main switch with door safety interlock, protection modules, overload protection for compressors and thermocontacts for fans.
- Microprocessor control and regulation system.
Accessories
Factory fitted accessories
- SL Unit silencement
- CT Condensing control down to 0 °C
- BT Low water temperature kit
- HR Desuperheater
- HRT/S Total heat recovery in series
- TX Coil with pre-coated fins
- AD Air section divider
- IS Modbus RTU protocol, RS485 serial interface
Loose accessories
- MN High and low pressure gauges
- CR Remote control panel
- RP Coils protection metallic guards
- AG Rubber shock absorbers
- FL Flow switch
Technical data
724 | 824 | 1044 | 1206 | 1306 | |||
Cooling | Cooling capacity (1) | kW | 222 | 289 | 373 | 454 | 517 |
Absorbed power (1) | kW | 78,1 | 100 | 121 | 159 | 195 | |
EER (1) | 2,85 | 2,89 | 3,08 | 2,86 | 2,65 | ||
Cooling (EN14511) | Cooling capacity (1) | kW | 221 | 288 | 371 | 452 | 515 |
Absorbed power (1) | kW | 79,2 | 101 | 123 | 161 | 197 | |
EER (1) | 2,79 | 2,85 | 3,02 | 2,81 | 2,61 | ||
Heating | Heating capacity (2) | kW | 257 | 333 | 413 | 513 | 599 |
Absorbed power (2) | kW | 84,2 | 109 | 130 | 169 | 192 | |
COP (2) | 3,06 | 3,06 | 3,18 | 3,04 | 3,12 | ||
Heating (EN14511) | Heating capacity (2) | kW | 259 | 335 | 416 | 515 | 602 |
Absorbed power (2) | kW | 87,3 | 113 | 135 | 174 | 199 | |
COP (2) | 2,97 | 2,96 | 3,08 | 2,96 | 3,03 | ||
Compressor | Quantity | n° | 4 | 4 | 4 | 6 | 6 |
Refrigerant circuits | n° | 2 | 2 | 2 | 2 | 2 | |
Capacity steps | n° | 4 | 4 | 4 | 6 | 6 | |
Evaporator | Water flow | l/s | 10,61 | 13,81 | 17,82 | 21,69 | 24,70 |
Pressure drops | kPa | 57 | 59 | 67 | 47 | 54 | |
Water connections | DN | 100 | 100 | 100 | 100 | 100 | |
Electrical characteristics | Power supply | V/Ph/Hz | 400/3/50 | 400/3/50 | 400/3/50 | 400/3/50 | 400/3/50 |
Max. running current | A | 161 | 195 | 249 | 293 | 361 | |
Max. starting current | A | 340 | 410 | 512 | 515 | 625 | |
Sound pressure | STD version (3) | dB(A) | 67 | 68 | 68 | 69 | 70 |
With SL accessory (3) | dB(A) | 64 | 65 | 65 | 66 | 67 | |
Weights | Transport weight | kg | 1753 | 1834 | 2492 | 2665 | 2940 |
Operating weight | kg | 1850 | 1930 | 2620 | 2820 | 3100 |
Dimensions
724 | 824 | 1044 | 1206 | 1306 | |||
L | STD | mm | 2800 | 2800 | 3900 | 3900 | 3900 |
W | STD | mm | 2200 | 2200 | 2200 | 2200 | 2200 |
H | STD | mm | 2100 | 2100 | 2100 | 2100 | 2100 |
Notes
- 1 Chilled water from 12 to 7 °C, ambient air temperature 35 °C.
- 2 Heated water from 40 to 45 °C, ambient air temperature 7 °C d.b./6 °C w.b.
- 3 Sound pressure level measured in free field conditions at 1 m from the unit. According to ISO 3744.
- N.B. (1) Weights of WP version are specified on technical brochure.