Инструкция на Чиллеры с воздушным конденсатором. бренда McQuay

Product Manual

508 B – 04/01 A Data: January 2004 Supersedes: None Air cooled screw chillers McPower 228.2÷478.3 Standard Efficiency – Cooling capacity from 760 to 1600 kW High Efficiency – Cooling capacity from 820 to 1680 kW 50Hz – Refrigerant: HFC 407C 508 B – 04/01 A – pag. 1/52

New air cooled screw chillers McQuay McPower

McQuay International introduces its newest air cooled screw chillers equipped with new single screw compressors. McQuay air cooled McPower are a new range of chillers using the last generation of McQuay StarGateTM Frame 4 single screw compressors. They are manufactured by McQuay to satisfy the…

10 different lines

New McPower line is available with two different efficiencies in order to satisfy every kind of requirements. Acoustic flexibility up to 65 dBA thanks to different noise level versions: • • SE Standard Efficiency with COP up to 2,45 (nominal condition-only compressor power input). - ST Standard…

The rugged design of the single-screw compressor allows it to be tolerant of liquid slugging. McPower screw chiller will start and operate under conditions that would often destroy other compressors. • Very low loading enhances the bearing and compressor reliability. Due to symmetrical compression…

This refrigerant is safe and chemically stable and is listed in ASHRAE Standard-34 (Number Designation and Safety Classification For Refrigertants) as “A-1” refrigerant: lowest toxicity, non-flammable. HFC 407C has “Glide”. Glide describes the property of a refrigerant boiling across a temperature…

Electronic expansion valve (EEXV)

McPower air cooled chiller is equipped with the most advanced electronic expansion valve to achieve precise control of refrigerant mass flow. As today’s system requires improved energy efficiency, tighter temperature control, wider range of operating conditions and incorporate new features like…

MicroTech II C Plus controller

MicroTech II C Plus controller is installed as standard on all the units; it can be used to modify unit set points and check control parameters. A display illustrates the machine's operating status, programable values and setpoints e.g. temperatures, and pressures of fluids (water, refrigerant).…

System security

Phase monitor Freeze protection An evaporator’s flow controller input (stops the unit) Remote on/off input. Regulation type Proportional + integral + derivative regulation on the input probe of the evaporator water leaving temperature. Condensation The condensation can be carried out according to…

MicroTech II C Plus remote control

Compatibility with supervisory systems is becoming increasingly important in HVAC. MicroTech II C Plus allows easy interfacing with BMS (Building Management Systems), the external world that can be: • • • Full compatible Siemens, Johnson; Every MODBUS compatible system; ( Satchwell, Honeywell )…

Fan Silent Mode - The microprocessor clock switches the fan at low speed according to the client setting (i.e. Night & Day), providing that the ambient temperature/condensing pressure is allowing the speed change. It allows a perfect condensing control down to –18°C Speedtrol – Continous fan speed…

Space requirements

The ALS units are air-cooled, hence it is important to observe the minimum distances which guarantee the best ventilation of the condenser coils. Limitations of space reducing the air flow could cause significant reductions in cooling capacity and an increase in electricity consumption. To…

Acoustic protection

The low noise levels of the McPower units means that they meet the most restrictive regulations, thanks to the availability of four versions with different sound levels. When the noise level must meet special requirements it will be necessary to pay the maximum attention to ensure the perfect…

Table 5 – Ethylene glycol and low ambient temperature correction factors

Air ambient temperature °C % of ethylene glycol by weight Cooling capacity correction factor Power input correction factor Flow rate correction factor Water pressure drops correction factor -3 10 0,991 0,996 1,013 1,070 -8 20 0,982 0,992 1,040 1,129 -15 30 0,972 0,986 1,074 1,181 -23 40 0,961 0,976…