Chillers are designed to create comfortable conditions in a large number of rooms (for example, in hotels) or in entire buildings (large state and government institutions, museums, airports). They act as external units for large air conditioning systems, to which a large number of “internal units” - fan coil units - can be connected, and cool or heat the refrigerant (water).

Characteristics

· Single-screw compressor with smooth capacity control

· Special design of the compressor and heat exchangers to optimize operation on ozone-safe refrigerant R134a

· Electronic control panel with the ability to integrate the unit into a unified building management system (BMS) using BACnet, Modbus and LonMark protocols

· Multi-compressor units with independent refrigeration circuits

· Evaporators are shell-and-tube heat exchangers (single-pass refrigerant) in a common housing.

Condensers - shell-and-tube heat exchangers

· Compact series of units - small footprint

· Easy installation, commissioning and ease of maintenance

· For the standard version of the unit, the operating temperature range of the water leaving the condenser is from +25 °C to +50 °C; temperature range of the cooled coolant (water/glycol solutions) from -8 °C to +15 °C (evaporator outlet temperature)

· Possibility of switching the unit to the mode of heating condenser water to a temperature of +55 ° C. Chillers can be made in two versions:

· Standard version (EWWD-DJYNN) - 10 standard sizes with cooling capacity from 165 to 555 kW (EER~3.9) with sound pressure level at a distance of 1 m from 70 to 71.5 dBA

· High efficiency units (EWWD-DJYNN/A) - 10 standard sizes with cooling capacity from 186 to 604 kW (EER~4.6) with sound pressure level at a distance of 1 m from 70 to 71.5 dBA

They allow installation directly in the open air, and therefore do not take up space indoors and save usable space.

High durability: the compressor's trouble-free operation life exceeds 40,000 hours (more than 4.5 years).

Due to the use of water rather than freon as a refrigerant, the number of refrigerated rooms, the length of communications and the power of the system are practically unlimited.

Single screw compressor with smooth capacity control