CHA/K/FC 91÷151

Aircooled liquid Chillers Free-Cooling with axial fans, Scroll compressor and plate exchanger

The liquid Chillers of the CHA/K/FC 91÷151 series, with R410A refrigerant, offer innovative technology to meet the needs of systems for both domestic as well as industrial applications requiring the production of cooled water continuously year-round.
During the cold months, in the FREE-COOLING operation mode, the return liquid of the system is cooled directly by forced convection of outdoor air through the condensing coil, thus saving energy by not operating the unit's Scroll compressors. A 3-way valve system is controlled by the electronic microprocessor controller, allowing functioning in CHILLER, FREE-COOLING or MIXED (simultaneously CHILLER and FREE-COOLING) modes.
The units are compliant to the 2021 ErP Regulation for process cooling application.

Versions

CHA/K/FC - Cooling only
CHA/K/FC/SP - Cooling only with tank and pump

Power range

28,0-43,0 kW
7,9-12,0 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 with low ventilation and special wing profile, directly coupled to external rotor motors.
Condenser made of copper tubes and aluminium finned coil combined with FREE-COOLING coil.
Evaporator AISI 316 stainless steel braze welded plates type, complete with water differential pressure switch.
R410A refrigerant.
Electrical board includes: main switch with door lock device, fuses, compressor and pump remote control switch.
Condensing Control is included: electronic proportional device that ensures efficient and continuous functioning of the unit with outside air temperature down to –20 °C. It also allows to reduce the sound level especially at night. It consists of a fans speed controller with continuous speed regulation, high and low pressure transducers on cooling circuit and an electrical heater on electrical board.
Water circuit for SP version includes: insulated tank, circulating pump, safety valve, gauge and expansion vessel.
Microprocessor control and regulation system.

Accessories

Factory fitted accessories

BT Low water temperature kit
TX Coil with pre-coated fins
PS Single circulating pump
GS Single circulating pump gasket for glycol >30%
IS Modbus RTU protocol, RS485 serial interface

Loose accessories

CR Remote control panel
RP Coils protection metallic guards
AG Rubber shock absorbers