Installation, Maintenance and Commissioning Manual :6877419 02/2013
Mechanical Data – W2F0 Continued
SC25D045-W2F0 SC25D050-W2F0 SC25D055-W2F0
Standard Dry Cooler Match 1 x DR55 1 x DR70 1 x DR70
Capacity
Nom Cooling (Gross) – W2 (1) kW 43.8 47.8 54.6
Nom Cooling (Gross) - F0 (Free Cooling) (2) kW 91.4 98.8 105.8
Total Heat of Rejection –W2 kW 54.5 60.2 68.9
Capacity Steps 2 2 3
Fan Gain (5) kW 2.24 2.65 3.01
Dimensions - W x D x H
mm 2549 x 890 x 1980 2549 x 890 x 1980 2549 x 890 x 1980
Weight - Machine / Operating
kg 980 / 1020 1050 / 1090 1050 / 1100
Construction
Panels: Galvanised Sheet Steel, Epoxy Baked Powder Paint - Black Grey (RAL 7021)
Material/Colour Frame: Anodised Aluminium Frame with Black Nylon Corners
Evaporator
Rifled Copper Tube/Turbulated Hydrophilic Coated Aluminium Fins
Cooling/Dehum Stages 2/1 3/1 3/1
Condenser
(3) Stainless steel Brazed Plate
Water Volume l 6.1 9.9 9.9
Glycol Flow l/s 2.66 3.0 3.4
Pressure Drop Condenser kPa 69 29.8 38.4
Glycol Coil
Copper Tube/Turbulated Hydrophilic Coated Aluminium Fins
Water Volume l 42.2 42.2 42.2
Glycol Flow l/s 3.6 3.8 4
Pressure Drop F0 kPa 75.8 90.3 114.4
Unit
Water flow l/s 2.66 3.0 3.4
Pressure drop kPa 144.8 120.1 152.8
Dry Cooler
Water Volume L 55.9 55.9 55.9
Flowrate l/s 2.66 3.0 3.4
Pressure Drop kPa 35.7 48.6 59.3
Fan Motor
Backwards Curved, Centrifugal direct drive
Motor Type AC AC AC
Quantity x Motor Size kW 3 x 2.38 3 x 2.38 3 x 2.38
Speed @25Pa ESP/ maximum ESP rpm 1092 / 1364 1220 / 1364 1364 / 1364
Maximum ESP Pa 328 188 20
Nominal Airflow m³/s 5.3 5.9 6.5
Compressor - Scroll
Configuration
Dual Cool - Circuit 1 Tandem Compressors (Water Cooled)
Circuit 2 Free Cooling
Quantity - W2 2
Oil Charge Volume - W2 l 2 x 1.57 2 x 3 2 x 3
Oil Type Polyolvinyl Polyolester
Connections
Water Inlet / Outlet – W2 mm 42 42 42
Glycol Connections Inlet/Outlet – F0 mm 42 42 42
Condensate Drain Hose mm 22 22 22
Filtration Disposable to BS EN 779-G4
Quantity 4 3 3
OPTIONAL EXTRAS
Hot Gas Reheat - X
Nom Heating (Gross) kW 11.9 12.2 12.2
Electric Heating (Total)
kW 21 21 21
Humidifier
Capacity kg/hr 8 8 8
Feed/Drain 3/4" BSPF Braided flexible hose / 19mm hose connection
Condensate Pump
Head m 10.8 10.8 10.8
Flow l/m 5 5 5
Drain 10mm Stainless Steel Stub Connection
First upgrade Fan Motor - EC Motor
Backwards Curved, Centrifugal direct drive
Quantity x Motor Size kW 3 x 2.2 3 x 2.2 3 x 2.2
Speed @ 25Pa / maximum ESP rpm 1074 / 1360 1200 / 1360 1337 / 1360
Maximum ESP Pa 314 188 45
Fan Gain (5) kW 1.4 1.92 2.6
Second upgrade Fan Motor - EC Motor
Backwards Curved, Centrifugal direct drive
Quantity x Motor Size kW 3 x 3.1 3 x 3.1 3 x 3.1
Speed @ 25Pa / maximum ESP rpm 1095 / 1520 1225 / 1520 1354 / 1520
Maximum ESP Pa 464 337 195
Fan Gain (5) kW 1.4 1.92 2.6
Low Pressure Hot Water
(4) Copper Tube/Aluminium Fin
Capacity Gross kW 32.5 34.1 35.7
Water Flow (Nominal) l/s 0.72 0.76 0.79
Pressure Drop kPA 20.2 21 21.8
LPHW Connection Sizes mm 22 22 22
(1) Entering air 24°C/ 45% RH condenser water in / out 35 / 40°C
(2) Entering air 24°C/ 45% RH condenser water in / out 7/12°C and based on water.
(3) Pressure drop through condenser, free cooling coil, 3 port valve, Head pressure control valve and unit pipe work
(4) Based upon low pressure hot water 82°C inlet/71°C outlet. Air on 20°C
(5) Fan gain based on 25Pa ESP @ nominal air volume. Fan gain will change as airflow and ESP change.
W2F0
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