Tender Specification AQVL / AQVH / AQVC 85-140 Tender Specification SERIES: AQVL / AQVH / AQVC 85-140 TYPE: Air cooled water chiller, heat pump and condensing unit TECHNOLOGY: multi-scroll compressors, R410A refrigerant CAPACITY RANGE: Cool ing 84-137 [kW] Heating 92-146 [kW]
Tender Specification AQVL / AQVH / AQVC 85-140 1 General description AQVL / AQVH / AQVC units have been designed and optimized to operate with R410A refrigerant and scroll compressors Thanks to multi-scroll technology and asymmetric design in refrigerant circuits, it is possible to reach very high level of full load efficiency (EER up to 3,2 and COP up to 3,6) and seasonal performances (ESEER up to 4,3), in line with Ecodesign requirements AQVL units are available in 6 sizes, with a nominal capacity range
Tender Specification AQVL / AQVH / AQVC 85-140 • Basic Low Noise (-): the units are equipped with star connected fans on sizes 85 to 115 and delta connected fans on sizes 125 to 140. The chillers are supplied with compressors box to reduce the noise emissions • Super Low Noise (S): the units are equipped with star connected fans, fitted with a speed controller which allows the units to operate with a very low rotation speed.
Tender Specification AQVL / AQVH / AQVC 85-140 • Desuperheater: plate type heat exchangers fitted on the compressor discharge line, to recover about 20 % of the total heat rejected to the condensers • Total Heat Recovery (AQVR version): double circuit plate type heat exchanger to recover the total heat rejected to the condensers.
Tender Specification AQVL / AQVH / AQVC 85-140 • Electronic expansion device Excellent control of superheating for the best performance at full and partial load and for a safe operation • Microchannel coils for AQVL version Significant reduction on refrigerant charge and operating weight • Compressors box Remarkable sound reduction even for the basic noise version • Control platform Modular architecture, compressor envelope integration, corrective actions in border line areas, easy-friendly user in
Tender Specification AQVL / AQVH / AQVC 85-140 3 Cabinet The cabinet is made of heavy gauge galvanized steel. All galvanized steel components are individually painted by a special painting process before the assembly of the unit. This painting system performs a homogeneous protection to the corrosion. The painting is a polyester powder based type, colored in RAL 7040.
Tender Specification AQVL / AQVH / AQVC 85-140 They are protected by a 130 [W] antifreeze electric heater to ensure a good protection against freezing at low ambient temperature when the unit is switched off. Maximum working pressure is 10 [bar] water side and 45 [bar] refrigerant side 6 Condenser Condenser coils are made of seamless copper tubes, arranged in staggered rows, mechanically expanded into corrugated aluminum fins.
Tender Specification AQVL / AQVH / AQVC 85-140 Special fan with electronic brushless type motors are used in HT, HPF and HSE versions. Fans are equipped with externally mounted nozzle profile housing generating low sound levels 8 Refrigerant circuit All the units are equipped with two independent and separate refrigerant circuits. Each refrigerant circuit is equipped with liquid line and discharge line shut-off valves, filter-drier with solid core, sight glass and electronic expansion valve.
Tender Specification AQVL / AQVH / AQVC 85-140 9 Control panel A new optimized control with an easy-friendly interface, manages unit operation under different load and temperature condition and can provide: • Compressor management o Power on/off o Anti-cycle o Tandem / trio unloading for high pressure, high temperature and/or high compressor pressure ratio • Chilled and hot water temperature regulation (return water temperature RWT - P+I type or leaving water temperature LWT - neutral band type) • Automati
Tender Specification AQVL / AQVH / AQVC 85-140 • Remote signaling, by dry contacts: o Voltage presence o Compressors in operation o General alarm • Hydro-kit management: start-up of pump, antifreeze heater of external tank, pump anti-sticking function • Heat recovery management by means of RWT sensor at the heat recovery condenser Unit controller can display all operating parameters such as: • Return water temperature • Leaving water temperature • Outdoor ambient temperature • Refrigerant discharge pressur
Tender Specification AQVL / AQVH / AQVC 85-140 • • • • • • • Evaporator antifreeze Lack of water flow Compressor operation / operating hours and start-up numbers Pump operation / operating hours Compressor thermal protection Fan thermal protection Faulty sensors 10 Safety and control devices Each unit is complete with the following safety and control devices Safety • • • • • • • • Power disconnect switch with an emergency stop function Phase sequence control High pressure switches Low pressure switches
Tender Specification AQVL / AQVH / AQVC 85-140 • Safety valve on discharge lines Control • • • • • • • • • High pressure transducers Low pressure transducers Discharge gas temperature probes Return water temperature sensor Leaving water temperature sensor (with an antifreeze function) Suction temperature sensor (for EEV control) Outdoor ambient temperature sensor Coil temperature sensors (AQVH only) Heat recovery temperature sensor (AQVR only) 11 Optional hydro kits On board mounted and remote hydro-kits
Tender Specification AQVL / AQVH / AQVC 85-140 On board hydro kit without buffer tank are provided with following components: • Single, double or triple pump with low available static pressure (100 [kPa]) or high available static pressure (200 [kPa]) • Expansion tank (18 [l] for all models) • Check valves (in case of 2 pumps) • Safety valve • Automatic air vent valve • Thermal insulation for pipes and water pump(s) On board hydro kit with buffer tank are provided with following components: • Single, double
Tender Specification AQVL / AQVH / AQVC 85-140 12 Factory installed options • • • • • • • • • • • • • • • • • • ModBus protocol kit for BMS Lonwork protocol kit for BMS Bacnet protocol kit for BMS Compressors soft-starter Fan speed control for low ambient operation in cooling mode Double set point Power factor correction capacitors Compressor overload protection Automatic circuit breaker HP & LP gauges E-coating for Al/Cu coils Condenser coils with copper fins Coil grilles Chiller grilles Compressor jacke
Tender Specification AQVL / AQVH / AQVC 85-140 13 Field installed accessories • • • • • • • • Remote ON/OFF control Remote keyboard panel Sequencer, up to max four units Master and slave control, up to max four units Anti-vibration spring Water pressure switch Water filter Remote hydro kits with buffer tank, 1 or 2 low or high pressure pump(s), relevant accessories, with or without antifreeze heater 14 Conformity with standards The units are in conformity with the following standards: • Machine Directive
