EXPsystems – Air cooled multi-purpose ecological system with axial fans. Range with scroll hermetic compressors and R410A refrigerant gas.
Construction features
• Compressor: scroll type, rotary, hermetic complete with thermal protection and casing heater.
• Up to 6 capacity steps with high efficiency at partial loads.
• Main and secondary heat exchangers: crossed flow stainless steel plate exchangers, complete with antifreeze heater, closed cell polyurethane foam rubber insulation and water flow differential pressure switch.
• Air side heat exchanger: finned coil with copper pipes and aluminium fins.
• Fan: external rotor axial type electric fans, equipped with internal thermal protection, accident protection grilles and a proportional electronic device for continuous fan rotation speed regulation (T version; fans with an EC motor are standard in the Q version)
• Control: microprocessor electronic control with Adaptive Function Plus logic.
• Structure: load-bearing structure made of galvanised and painted steel plate with polyester powder coating.
• The unit is also complete with:
– fan and compressor thermal magnetic circuit breakers, heat exchanger antifreeze heater;
– display of cooling circuit high and low pressure;
– electronic expansion valve;
– clock board;
– control of Variable Primary Flow (VPF_R).
Versions
• T – High efficiency version.
• Q – Super silenced version complete with compressor technical compartment soundproofing, fans with EC motor at reduced speed.
Models
• TXAETY: EXPsystems unit.
• TXAEQY: super silenced EXPsystems unit.
Factory fitted accessories
• Tube and shell main and secondary heat exchangers.
• PUMP with single or double electric pump, one of which automatic in standby. The electric pumps are available in the main and secondary/recovery heat exchanger low or high head set-ups.
• TANK&PUMP with 700-1000 litre integrated buffer tank (depending on models) and single or double electric pump, complete with expansion tank, air vent valves, safety valve and water side pressure gauge.
• Inverter pump control for unit start-up (TXAEQY).
• Desuperheater.
• Condensing control with fans with EC motor (standard in Q versions).
• Condensing control with over-pressure fans (T version only).
• Power factor correction capacitors (cosφ > 0.94).
• Forced limit of power consumption.
• Forced noise limit.
• Energy parameter measuring device.
• Soft starter.
• Compressor box and soundproofed cooling circuit.
• Compressor soundproof enclosures.
• Cooling circuit outlet and inlet valves.
• Refrigerant leak detector.
• Cooling circuit high and low pressure gauges.
• Double safety valves.
• Coil protection nets or metal filters.
• Bottom compartment protection nets.
• Pre-painted copper/aluminium or copper/copper coils.
• Digital input for double set-point.
• 4-20 mA analogue signal for shifting set-point.
• Electrical panel antifreeze heater, buffer tank, electric pumps and desuperheater, if applicable.
• Interfaces for serial communication with other devices.
• Spring anti-vibration mounts.
Separately supplied accessories
• Remote keypad with display.
• Thermostat with display.
• Rhoss supervisors for unit monitoring and remote management.
• Rhoss sequencer for integrated management of multiple chillers.
