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803 B – 04/11 D – pag. 11/24

Physical data PFS “B”

PFS Unit size

103.1

124.1

147.1

208.2

229.2

249.2

272.2

296.2

Cooling capacity (1)

kW

369

445

521

734

816

895

976

1050

Power input (1)

kW

65

78

90

130

143

155

168

180

COP (1)

5.7

5.7

5.8

5.7

5.7

5.8

5.8

5.8

McQuay Screw compressors

No.

1

1

1

2

2

2

2

2

Refrigerant circuits

No.

1

1

1

1

1

1

1

1

Min % of capacity reduction

%

25,0

25,0

25,0

12,5

12,5

12,5

12,5

12,5

Refrigerant charge HFC 134a

kg

130

165

180

200

215

230

274

290

Oil charge

l

30

30

30

60

60

60

60

60

Evaporator
Evaporators / water volume

No./l

1/78

1/107

1/134

1/184

1/210

1/210

1/281

1/302

Max water operating pressure

bar

10,5

10,5

10,5

10,5

10,5

10,5

10,5

10,5

Condenser
Condensers / water volume

No./l

1/83

1/111

1/133

1/181

1/199

1/243

1/243

1/263

Max water operating pressure

bar

10,5

10,5

10,5

10,5

10,5

10,5

10,5

10,5

Weight and dimensions
Shipping weight

kg

3089

3370

3603

5546

5636

6007

6448

6598

Operating weight

kg

3250

3588

3870

5911

6045

6460

6972

7163

Unit length (2)

mm

3625

3860

3860

4145

4145

4145

4145

4145

Unit width

mm

1551

1551

1551

1743

1743

1808

1910

1910

Unit height

mm

2250

2250

2250

2300

2300

2300

2300

2300

Note: (1)

Nominal cooling capacity and power input are based on: 12/7 °C entering/leaving evaporator water temperature;
30/35 °C entering/leaving condenser water temperature.

(2)

Length includes modulating condenser water flow valve.

Electrical data PFS “B”

PFS unit size

103.1

124.1

147.1

208.2

229.2

249.2

272.2

296.2

Standard voltage (1)

400 V – 3Ph – 50 Hz

Nominal unit current (2)

A

112

129

148

224

244

258

277

295

Max unit current (3)

A

137

178

205

302

331

357

385

410

Max unit inrush current (4)

A

367

367

367

535

550

561

575

588

Max unit current for wires sizing (5)

A

142

183

210

307

336

362

390

415

Max short circuit holding current

kA

25

25

25

25

25

25

25

25

Notes: (1)

Allowed voltage tolerance ± 10%. Voltage unbalance between phases must be within ± 3%.

(2)

Absorbed current referred to nominal condition: 12/7 °C entering/leaving evaporator water temperature; 30/35 °C
entering/leaving condenser water temperature.

(3)

Absorbed current referred to the following conditions: 15/10 °C entering/leaving evaporator water temperature;

45/50°C entering/leaving condenser water temperature.

(4)

Absorbed current of compressor n°1 at 75% + inrush current of the other compressor.

(5)

Compressors FLA (Full Load Ampere).

Содержание PFSB 103.1

Страница 1: ...UDQW D 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 Certi...

Страница 2: ...ws a constant gas flow This compression process completely eliminates gas pulsations The oil injection also results in significant mechanical noise reduction The twin gas compressor discharge chambers...

Страница 3: ...al capacity This control is made by means of capacity slides controlled by microprocessors Standard start is star delta type Soft start type is available as option in order to have lower inrush curren...

Страница 4: ...Water content in cooling circuits The cooled water distribution circuits should have a minimum water content to avoid excessive compressors start and stop In fact each time the compressor starts up an...

Страница 5: ...mal load High evaporator entering water temperature start up Display of evaporator entering leaving water temperature Display of condensing evaporating temperature and pressure superheat temperature f...

Страница 6: ...y and automatically of any alarm situation via modem printouts Automatic printouts of alarms parameters and graphs To control several plants located in different geographical areas from a central stat...

Страница 7: ...t off valve Suction shut off valve installed on the suction port of the compressor to facilitate maintenance operation Flanged connections Evaporator and condenser flanged connections 150 psig are ava...

Страница 8: ...protect the control cabinet and the other areas of the chiller Location A levelled and sufficiently strong floor is required Rubber in shear isolators can be furnished and field placed under each cor...

Страница 9: ...COP correction factor 0 044 1 000 1 000 1 000 0 088 0 990 1 018 0 973 0 132 0 981 1 036 0 945 Table 4 Ethylene glycol and low ambient temperature correction factors Air ambient temperature C 3 8 15 2...

Страница 10: ...803 B 04 11 D pag 10 24 Nomenclature P F S B 249 2 134 P Water cooled F Flooded S Screw compressor B Release 103 296 Unit size 1 N of compressors 2 134 Refrigerant HFC 134a...

Страница 11: ...743 1743 1808 1910 1910 Unit height mm 2250 2250 2250 2300 2300 2300 2300 2300 Note 1 Nominal cooling capacity and power input are based on 12 7 C entering leaving evaporator water temperature 30 35 C...

Страница 12: ...from the unit in free field rif 2 x 10 5 PFS Unit size 63 Hz 125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz 8000 Hz dBA 103 1 58 3 63 5 70 1 62 8 60 6 54 5 47 1 37 1 66 0 124 1 59 3 64 5 71 1 63 8 61 6...

Страница 13: ...751 147 5 1 715 165 4 3 678 185 3 7 208 2 10 845 117 7 3 812 131 6 2 777 148 5 3 740 166 4 5 702 185 3 8 4 767 124 6 2 733 141 5 2 699 159 4 4 662 179 3 7 625 201 3 1 5 795 125 6 4 760 142 5 4 724 160...

Страница 14: ...803 B 04 11 D pag 14 24 PFS B 2 passes evaporator water pressure drop Water flow rate l s Pressure drop kPa...

Страница 15: ...803 B 04 11 D pag 15 24 PFS B 3 passes evaporator water pressure drop Water flow rate l s Pressure drop kPa...

Страница 16: ...803 B 04 11 D pag 16 24 PFS B 2 passes condenser water pressure drop Water flow rate l s Pressure drop kPa...

Страница 17: ...803 B 04 11 D pag 17 24 PFS B 3 passes condenser water pressure drop Water flow rate l s Pressure drop kPa...

Страница 18: ...803 B 04 11 D pag 18 24 PFS B 4 passes condenser water pressure drop Water flow rate l s Pressure drop kPa...

Страница 19: ...803 B 04 11 D pag 19 24 Dimensions PFS B 103 1 Dimensions PFS B 124 1 147 1...

Страница 20: ...803 B 04 11 D pag 20 24 Dimensions PFS B 208 2 229 2 Dimensions PFS B 249 2...

Страница 21: ...803 B 04 11 D pag 21 24 Dimensions PFS B 272 2 296 2...

Страница 22: ...e designed for 10 5 bar Vessels will include spring loaded pressure relief valves Shell and non connection water heads will be insulated with 3 4 thick closed cell insulation Condenser Condenser will...

Страница 23: ...803 B 04 11 D pag 23 24...

Страница 24: ...00040 Cecchina Roma Italia Tel 06 937311 Fax 06 9374014 Email info mcquayeurope com www mcquayeurope com McQuay is participating in the Eurovent Certification Programme Product are as listed in the E...

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