Air Cooled Chillers (Scroll and Screw)
Cooling capacity: 15~1.750 kW
Heating Capacity: 15~700 kW (Heat Pump)
Construction features
• Compressor: high energy efficiency semi-hermetic screw compressor with linear capacity control (25-100%). Star-delta limited start and complete with integral protection, casing heater and refrigerant gas outlet piping shut-off valve.
• Water side heat exchanger: dry expansion shell and tube exchanger with counterflow heat exchange, complete with closed cell polyurethane foam rubber insulation, water flow differential pressure switch and Victaulic fittings.
• Air side heat exchanger: with micro-channels.
• Fan: external rotor axial type electric fans with internal thermal protection, accident protection grilles.
• Control: microprocessor electronic control.
• Structure: made of galvanised and painted steel plate with polyester powder coating.
• The unit is also complete with:
- Display of cooling circuit high/low pressure;
- Electronic expansion valve; - Clock board;
- Master/Slave control up to 4 units in parallel.
Factory fitted accessories
• PUMP with single or double electric pump, including an automatic pump in standby. The pumps are available in the low or high head versions.
• VPF control. • Desuperheater.
• 100% heat recovery unit
• -10°C condensing control.
• -15°C condensing control with fans with EC motor (standard with Q versions).
• Condensing control with over-pressure fans.
• Power factor correction capacitors (cosφ > 0.94).
• Compressor circuit breaker switches.
• Electro-mechanical flow switch.
• Oil level sensor.
• Forced limit of power consumption.
• Forced noise limit.
• Energy parameter measuring device.
• Optimised energy efficiency.
• Soft starter.
• Soundproofed compressor box.
• Inlet compressor shut-off valves.
• Refrigerant leak detector.
• Cooling circuit high and low pressure gauges.
• Double safety valves.
• Coil protection grilles.
• Micro-channel coils with E-coating treatment.
• Control of min/max power supply voltage.
• Digital input for double set-point.
• 4-20 mA analogue signal for shifting set-point.
• Evaporator antifreeze heater, electrical panel, electric pumps and heat exchangers for heat recovery if applicable.
• Low temperature water production.
• Interfaces for serial communication with other devices.
• Anti-vibration mounts.
Separately supplied accessories
• Remote keypad with display.
• Thermostat with display.
• Untes supervisors for unit monitoring and remote management.
• Untes sequencer for integrated management of multiple chillers.
