The base frame is made of heavy gauge electrowelded tubular steel sections throughout, treated with a hardwearing exterior quality protective finish.
ECF.630/CS STT.DPA.LN

The sheet steel structure, which features the same passivation treatment and painting schedule as the base frame, is joined to the base by means of an electrowelding process.
	ECF 630/CS STT DFA LN
	The panelling is made of steel and finished with the same protective treatment.
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Modularity
Facility to connect several units in parallel, also using modular chillers
made by different manufacturers.

Offering exceptional performance levels in terms of efficiency, the units in the new series are able to exploit low ambient airtemperature conditions whenever available – all year round. The new range, which extends the existing line of air conditioning units, has been specifically engineered to provide the exceptional reliability demanded in civil, technology and industrial application

Although the maximum saving in energy is obtained during continuous operation of the systems for 24 hours/day, chillers equipped with free-cooling allow very substantial power consumption savings even with short periods of operation, while also guaranteeing longer life expectancy and reduced maintenance requirements when compared to conventional chillers.

The operating methods utilized guarantee energy savings typically in excess of 40% with respect to conventional units.

Free cooling "No Glycol"

New system called "no glycol" is suitable for all applications where using of ethylene glycol or anti-freeze solutions is not allowed.

Compact design
Careful design of the hydraulic circuit combines with the over-sized of heat exchanger and optimization of operation logic closely coordinated by a dedicated software, allow you to raise the maximum energy savings and lifetime of the machine.

Compressors

Types of primary makes of chiller compressors normally utilized in mono, tandem or trio configuration, featuring high efficiency to ensure very competitive COP values.

Scroll compressors in TRIO configuration, Scroll compressors in TANDEM configuration

Semi-hermetic screw compressor equipped as standard with four capacity steps. The electric motors feature part-winding start technology or star delta open transition or star delta closed transition and are protected from overheating by means of thermistors embedded in the stator winding. The screw compressors are automatically partialised in step o in a continuous way, following the thermal load variation.

Screw compressor

Optional acoustic boxes available for compressor's and or pumps, low noise version
Hermetic reciprocating compressor cooled by liquid refrigerant on the suction side and protected by thermal overload and overcurrent relays.
Hermetic scroll compressor operating with very high efficiency levels and low electrical power consumption.

Dual refrigerant circuit evaporator

Package water chiller ESE.038/SS B-ES RV.PH with plate evaporator and recirculating
and processing high pressure pump (15 bar)

Self-cleaning coaxial type with high turbulence swirl profile (ECA-ESE.001÷085)
Direct expansion type of innovative water/gas design, constructed of heavy gauge copper pipes, immersed in the storage tank, thermally insulated and crossed by reverse-flows of gas-water that make it possible to achieve maximum effective heat exchange, zero thermal dispersion, operation of the compressor with low compression ratio with a consequent high efficiency coefficient.

Shell and tube type (ECA.095÷930)
Very rugged construction, designed to withstand vibration and corrosion. The "U" type geometry of the tube core guarantees very high absorption of mechanical stress. The tube core can be removed for inspection or maintenance purposes. The shell is insulated with extra-thick anti-condensation matting in closed cell material.

Brazed plate type (on request ECA-ESE.002÷180)
Made of 316 AISI stainless steel with extra-thick anti-condensation matting in closed cell material.

Refrigerant circuit
The refrigerant circuits feature a mono compressor, bi-compressor, or trio compressor in tandem configuration with welds executed using silver alloy weld material. Refrigerant circuit components:

Expansion capillary tube (001 ÷ 004);
Mechanical or electronic lamination valve (005 ÷ 930);
Shut-off valves (optional);
Filter/filters drier;
Liquid and moisture indicator;
Muffler;
Desuperheaters or recovery condensers to produce hot water (opt.);
Safety pressure switches on high pressure (005÷930) and low pressure sides (022÷930);
Pressure connections for charging and discharging refrigerant fluid;
Clearly visible dual scale pressure gauges (opt);

Package water chillers available with scroll compressors

The compact size of the units makes for more efficient use of available space,
with reduced footprints minimizing the installation surface area required.

Condenser treatment		Heat pump treatment
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Networking

Hitema avails itself of electronical control system to monitor performance of its chillers.

All the models are provided with Carel last version control pCO3 and Modbus® protocol.
Adding a card as option to Carel control, it’s allowed interfacing with Modbus®, BACnet™ e LonWorks®.
- Option card RS485 for Modbus® protocol;
- Option card LON for LonWorks® protocol;
- Option card pCONET for BACnet™ MS/TP protocol;
- Option card pCOWEB for BACnet™ Ethernet™ protocol.

Chiller with air cooled condenser managed by
Electronically Commutated fans (EC-fans)

Plate core type cooling condensers with mechanically expanded copper tubes in an aluminium finned core (pre-painted on request) with swirl profile to increase turbulence and hence heat exchange efficiency, complete with subcooling function.

The condenser section can be equipped with electronically Commutated fans (EC-fans) for further energy saving.

Microprocessor control system

A microprocessor controls all unit functions and allows any adjustment to be made. By means of the microprocessor the self-point values and functioning parameters can be entered directly. Supply water temperature tolerance +/- 0,2°C. This type of microprocessor can control up to four compressors. It is equipped with an acoustic and visual alarm, push buttons for the various functions, continuous control of the system and a data saving system in the case of a power cut. The set-point values can be set and shown on the display.
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Package watter chillers ECA.001 ÷ ECA.280/CS STT.SN			Package watter chillers ECRB 230-930

Complete hydraulic circuit