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Summary of Contents for McQuay PFSB 103.1
- Page 1 Product Manual 803 B – 04/11 D Data: November 2004 Supersedes: 803 B-02/09 C McQuay is participating in the Eurovent Certification Programme. Product are as listed in the Eurovent Directory of Certified Products and on the web site www.eurovent-certification.com...
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Page 2: Customer Benefits
McQuay International introduces their newest water cooled screw chillers equipped with new single screw compressors. McQuay water cooled PFS chillers equipped with 1 or 2 McQuay screw compressors are a new range of the unit using the StarGate single screw compressors. They are manufactured by McQuay to satisfy the requirements of the consultants and the end user. -
Page 3: General Characteristics
General characteristics Ecological HCF 134a refrigerant McQuay has designed and optimized Stargate compressors to operate with HFC 134a, ecological refrigerant with zero ODP (Ozone Depletion Potential) and very low GWP (Global Warming Potential) that means low value of the “direct effect” in the formula of TEWI (Total Equivalent Warming Impact). -
Page 4: Electrical Panel
To prevent damage to the compressors, McQuay has envisaged the application of a device to limit frequent stops and restarts. - Page 5 A display illustrates the machine's operating status and programable parameters (setpoints) e.g. temperatures and pressures of fluids (water, refrigerant). Device controls maximise the McQuay chillers energy efficiency and reliability characteristics. It uses sophisticated software with predictive logic to select the most energy efficient combination of compressor.
- Page 6 HVAC. Microtech II Plus allows easy interfacing with BMS (Building Management Systems), the external world that can be: Landis & Staefa, Siemens, Johnson, Honeywell, Satchwell, Trend. McQuay Chiller System Controller (CSC) is available as option. 803 B – 04/11 D – pag. 6/24...
- Page 7 Condenser power factor correction - Installed on the electrical control panel to ensure it conforms to the plant rules. (McQuay advices maximum 0,9). Suction line shut off valve – Suction shut-off valve installed on the suction port of the compressor to facilitate maintenance operation.
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Page 8: Installation Notes
Installation notes Warning Installation and maintenance are to be performed only by qualified personnel who are familiar with local codes and regulations, and who are experienced with this type of equipment. Must be avoided the unit installation in places that could be considered dangerous for all the maintenance operations. Handling The chiller is mounted on heavy wooden skids to protect the unit from accidental damage and to permit easy handling and moving. - Page 9 Table 1 – Operating limits PFS 103.1÷296.2 HFC 134a Max evaporator leaving water temperature ° C Min evaporator leaving water temperature (without glycol) ° C Min evaporator leaving water temperature (with glycol) ° C Max condenser leaving water temperature ° C Table 2 –...
- Page 10 Nomenclature P F S “B” 249 . 2 134 Water cooled Flooded Screw compressor “B” Release 103÷296 Unit size N°of compressors Refrigerant HFC 134a 803 B – 04/11 D – pag. 10/24...
- Page 11 272.2 PFS Unit size 103.1 124.1 147.1 208.2 229.2 249.2 296.2 Cooling capacity (1) 1050 Power input (1) COP (1) McQuay Screw compressors Refrigerant circuits Min % of capacity reduction 25,0 25,0 25,0 12,5 12,5 12,5 12,5 12,5 Refrigerant charge HFC 134a...
- Page 12 Sound pressure level PFS “B” Sound pressure level at 1 m from the unit in free field ( rif. 2 x 10 Unit size 63 Hz 125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz 8000 Hz 103.1 63,5 70,5...
- Page 13 Standard ratings PFS “B” 103.1 ÷ 296.2 ENTERING CONDENSER WATER TEMPERATURE - ° C Unit Cool. Pow. Cool. Pow. Cool. Pow. Cool. Pow. Cool. Pow. size cap. input cap. input cap. input cap. input cap. input (kW) (kW) (kW) (kW) (kW) (kW) (kW)
- Page 14 PFS “B” - 2 passes evaporator water pressure drop Water flow rate (l/s) 803 B – 04/11 D – pag. 14/24...
- Page 15 PFS “B” - 3 passes evaporator water pressure drop Water flow rate (l/s) 803 B – 04/11 D – pag. 15/24...
- Page 16 PFS “B” - 2 passes condenser water pressure drop Water flow rate (l/s) 803 B – 04/11 D – pag. 16/24...
- Page 17 PFS “B” - 3 passes condenser water pressure drop Water flow rate (l/s) 803 B – 04/11 D – pag. 17/24...
- Page 18 PFS “B” - 4 passes condenser water pressure drop Water flow rate (l/s) 803 B – 04/11 D – pag. 18/24...
- Page 19 Dimensions PFS “B” 103.1 Dimensions PFS “B” 124.1-147.1 803 B – 04/11 D – pag. 19/24...
- Page 20 Dimensions PFS “B” 208.2-229.2 Dimensions PFS “B” 249.2 803 B – 04/11 D – pag. 20/24...
- Page 21 Dimensions PFS “B” 272.2-296.2 803 B – 04/11 D – pag. 21/24...
- Page 22 PFS “B” Frame 4 - Technical specifications To supply and install, where specified in the project n ..unit(s) water cooled chiller with cooling capacity of ..kW, to cool ..l/sec. of water from ..° C to .., condenser entering water temperature ….° C, condenser leaving water temperature ….°...
- Page 23 803 B – 04/11 D – pag. 23/24...
- Page 24 We reserve the right to make changes in design and construction at any time without notice, thus the cover picture is not binding. McQuay partecipa al programma di McQuay is participating in the Eurovent Certificazione Eurovent. Certification Programme I prodotti interessati figurano nella Guida Product are as listed in the Eurovent Eurovent dei Prodotti Certificati.
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