ST HRU Close control unit

Application

R series close control air conditioners are built and sized in such a way that they can be installed alongside data center racks in air conditioning systems for large data centers.

Technical features

• 2 sizes

• Cooling capacity from 25 to 38 [kW]

• Chilled water circuit

• G4/G2-class efficiency air filters with dirty filter alert

• EC electric brushless plug fans

• Power supply 400V/3pH/50Hz

Standard features

• Very high EER

• SySmart control microprocessor with graphic display

• Electrical panel complete with control and safety devices

• Cooling, electric and water top/bottom connections

• Supply and return air temperature sensors

• Unit shutdown system for the presence of fire

• RS485 and RJ45 ports for Modbus® RTU and TCP/IP

• Panels with thermo-acoustic insulation

• Front and rear accessibility for easy maintenance

• Limited footprint

Available accessories for chilled water units

• Two-way control valves

• Inlet and outlet water temperature sensors

• HT Kit for operation at high condensing temperatures

Humidification

• Room humidity probe

• Supply humidity probe

• Immersed electrodes humidifier

Mechanical and structural

• Condensate drain pump

• G4/M5 efficiency class intake air filter (EU5) (depending on size)

• Closed front panel for side supply

• Closed side panels for front supply

• Wheels for handling

Electrical

• Alternative voltages available 460V/3ph/60Hz - 380V/3ph/60Hz - 230V/3ph/60Hz

• Electrical supply line without neutral

• Automatic transfer switch (ATS), Basic version

• Automatic transfer switch (ATS), Advanced version

Regulation

• Constant air flow and pressure control

• Local network set up and connection cable

• User terminal for remote installation

• Flooding detection system