CHA/K 182÷604

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

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The liquid Chillers and Heat Pumps of the CHA/K 182÷604 series, with R410A refrigerant, are designed for medium-sized service sector or industrial ambients.
They are used, combined with Fan Coil units, for the air conditioning of the rooms or to remove the heat developed during industrial processes. They can be supplied with Modbus RTU protocol through RS485 serial interface.
Equipped with axial fans, Scroll compressors and shell and tube exchanger, even in the super silent version, these units can be completed by a hydraulic circuit with tank, with pump, with tank and pump or with AQUALOGIK technology.
The AQUALOGIK smart control system optimises the water set point and modulates the power supply voltage of the pump and the fans, thus making the use of the inertial tank superfluous. This obtains high energy efficiency, quiet operation and optimised dimensions and costs.
Are available as option the new EC Inverter fans with high available static pressure and efficiency for indoor ducted installation.
Units are compliant to the ErP 2021 Regulation for process cooling application; for comfort cooling application they are compliant if provided with EC or ECH accessory (EC Inverter fans).

On request, units can be supplied with R452B or R454B refrigerant.

Versions

CHA/K - Cooling only
CHA/K/WP - Reversible Heat Pump
CHA/K/SSL - Super silenced cooling only
CHA/K/WP/SSL - Super silenced reversible Heat Pump
CHA/K/ST - Cooling only with AQUALOGIK technology
CHA/K/WP/ST - Reversible Heat Pump with AQUALOGIK technology
CHA/K/SSL/ST - Super silenced cooling only with AQUALOGIK technology
CHA/K/WP/SSL/ST - Super silenced reversible Heat Pump with AQUALOGIK technology

Power range

49,0-188 kW
14,0-54,0 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 coil.
Shell and tube type evaporator with one circuit on the refrigerant side and one on the water side in 182÷453 models; with two independent circuits on the refrigerant side and one on the water side in 524÷604 models, complete with water differential pressure switch.
R410A refrigerant. On request R452B or R454B refrigerant.
Electrical board includes: main switch with door safety interlock, fuses, thermal protection relays for compressors and thermocontacts for fans.
On ST versions water circuit includes INVERTER circulating pump, safety valve and expansion vessel.
On ST versions Condensing Control is included: electronic proportional device that ensures efficient and continuous functioning of the unit with outside air temperature down to –20 °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, an high/low pressure transducer on cooling circuit and an electrical heater on electrical board.
Microprocessor control and regulation system (with AQUALOGIK technology on ST versions).

Accessories

Factory fitted accessories

IM Automatic circuit breakers
SL Unit silencement
RFM Cooling circuit shut-off valve on discharge line
RFL Cooling circuit shut-off valve on liquid line
CT Condensing control down to 0 °C
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
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
FB Antifreeze heater for evaporator/tank
SS Soft start
IS Modbus RTU protocol, RS485 serial interface
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
MN High and low pressure gauges

Loose accessories

CR Remote control panel
RP Coils protection metallic guards
AG Rubber shock absorbers
AM Spring shock absorbers
FL Flow switch