Инструкция на Водяные чиллеры с воздушным охлаждением Systemair серии AQVAL 85-140

Текст инструкции

1. Стр. 1 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]

2. Стр. 2 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…

3. Стр. 3 • 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…

4. Стр. 4 • 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. 4-way valves and field installed control sensor are also provided to ensure the…

5. Стр. 5 • 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…

6. Стр. 6 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…

7. Стр. 7 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…

8. Стр. 8 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…

9. Стр. 9 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 •…

10. Стр. 10 • 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…

11. Стр. 11

    • • • • • • 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…

12. Стр. 12 • 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…

13. Стр. 13 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…

14. Стр. 14 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…

15. Стр. 15 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…

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