Installation, Maintenance and Commissioning Manual :6877419 02/2013
Mechanical Data – W2F0
SC19D033-W2F0 SC19D038-W2F0 SC19D045-W2F0
Standard Dry Cooler Match 1 x DR40 1 x DR55 1 x DR55
Capacity
Nom Cooling (Gross) – W2 (1) kW 29.1 36.8 42.3
Nom Cooling (Gross) - F0 (Free Cooling) (2) kW 61.6 67.9 74.4
Total Heat of Rejection –W2 kW 36.7 46.0 53.1
Capacity Steps 2 2 2
Fan Gain (5) kW 0.66 1.0 1.7
Dimensions - W x D x H
mm 1985 x 890 x 1980 1985 x 890 x 1980 1985 x 890 x 1980
Weight - Machine / Operating
kg 850 / 880 860 / 890 860 / 890
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 2/1 2/1
Condenser
(3) Stainless steel Brazed Plate
Water Volume l 2.5 6.1 6.1
Glycol Flow l/s 1.8 2.26 2.6
Pressure Drop Condenser kPa 76.8 55.5 72.8
Glycol Coil
Copper Tube/Turbulated Hydrophilic Coated Aluminium Fins
Water Volume l 29.4 32.4 32.4
Glycol Flow l/s 2.3 2.26 2.95
Pressure Drop F0 kPa 31.6 47.2 60.1
Unit
Water flow l/s 1.8 2.26 2.6
Pressure drop kPa 108.44 102.7 132.86
Dry Cooler
Water Volume L 23.1 43.2 43.2
Flowrate l/s 1.8 2.26 2.6
Pressure Drop kPa 40.8 27.5 33.7
Fan Motor
Backwards Curved, Centrifugal direct drive
Motor Type EC EC EC
Quantity x Motor Size kW 2 x 2.2 2 x 2.2 2 x 2.2
Speed @25Pa ESP/ maximum ESP rpm 964 / 1360 1117 /1360 1340 /1360
Maximum ESP Pa 438 302 49
Nominal Airflow m³/s 3.7 4.3 5.1
Compressor - Scroll
Configuration
Dual Cool - Circuit 1 Tandem Compressors (Water Cooled)
Circuit 2 Free Cooling
Quantity - W2 2 2 2
Oil Charge Volume - W2 l 2 x 1.57 2 x 1.57 2 x 1.57
Oil Type Polyolvinyl
Connections
Inlet/Outlet mm 35 35 35
Condensate Drain Hose mm 22 22 22
Filtration Disposable to BS EN 779-G4
Quantity 3 3 3
OPTIONAL EXTRAS
Hot Gas Reheat - X
Nom Heating (Gross) kW 8.3 9.2 9.7
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 2 x 3.1 2 x 3.1 2 x 3.1
Speed @ 25Pa rpm 986 / 1520 1145 /1520 1364 / 1520
Maximum ESP Pa 589 453 216
Fan Gain (5) kW 0.65 1.03 1.73
Second upgrade Fan Motor - EC Motor
Backwards Curved, Centrifugal direct drive
Quantity x Motor Size kW N/A N/A N/A
Speed @ 25Pa rpm N/A N/A N/A
Maximum ESP Pa N/A N/A N/A
Fan Gain (5) kW N/A N/A N/A
Low Pressure Hot Water
(4) Copper Tube/Aluminium Fin
Capacity Gross kW 22.2 24.5 26
Water Flow (Nominal) l/s 0.49 0.54 0.58
Pressure Drop kPA 9.4 9.7 10.1
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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