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CHA-M/K 724÷1306

Aircooled liquid Chillers and Heat Pumps with axial fans, Scroll compressors and shell and tube exchanger

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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.

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
724824104412061306
CoolingCooling capacity (1)kW222289373454517
Absorbed power (1)kW78,1100121159195
EER (1)2,852,893,082,862,65
Cooling (EN14511)Cooling capacity (1)kW221288371452515
Absorbed power (1)kW79,2101123161197
EER (1)2,792,853,022,812,61
HeatingHeating capacity (2)kW257333413513599
Absorbed power (2)kW84,2109130169192
COP (2)3,063,063,183,043,12
Heating (EN14511)Heating capacity (2)kW259335416515602
Absorbed power (2)kW87,3113135174199
COP (2)2,972,963,082,963,03
CompressorQuantity44466
Refrigerant circuits22222
Capacity steps44466
EvaporatorWater flowl/s10,6113,8117,8221,6924,70
Pressure dropskPa5759674754
Water connectionsDN100100100100100
Electrical characteristicsPower supplyV/Ph/Hz400/3/50400/3/50400/3/50400/3/50400/3/50
Max. running currentA161195249293361
Max. starting currentA340410512515625
Sound pressureSTD version (3)dB(A)6768686970
With SL accessory (3)dB(A)6465656667
WeightsTransport weightkg17531834249226652940
Operating weightkg18501930262028203100

Dimensions

724824104412061306
LSTDmm28002800390039003900
WSTDmm22002200220022002200
HSTDmm21002100210021002100

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.