Installation, Maintenance and Commissioning Manual :6877419 02/2013
Mechanical Data – W2F0 Continued
SC31D055-W2F0-0 SC31D065-W2F0-0 SC31D075-W2F0-0
Standard Dry Cooler Match 1 x DR70 1 x DR95 1 x DR95
Capacity
Nom Cooling (Gross) – W2 (1) kW 54.5 61.8 66.8
Nom Cooling (Gross) - F0 (Free Cooling) (2) kW 107.0 121.6 135.2
Total Heat of Rejection –W2 kW 68.7 78.0 84.2
Capacity Steps 3 3 2
Fan Gain (5) kW 1.25 2.06 3.22
Dimensions - W x D x H
mm 3113 x 890 x 1980 3113 x 890 x 1980 3113 x 890 x 1980
Weight - Machine / Operating
kg 1210 / 1260 1220 / 1270 1220 / 1270
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 3/1 2/1 2/1
Condenser
(3) Stainless steel Brazed Plate
Water Volume l 9.9 9.9 9.9
Glycol Flow l/s 2.7 3.9 4.1
Pressure Drop Condenser kPa 38.2 48.9 45
Glycol Coil
Copper Tube/Turbulated Hydrophilic Coated Aluminium Fins
Water Volume l 52.3 52.3 52.3
Glycol Flow l/s 3.4 5 5.3
Pressure Drop F0 kPa 64.2 80 91.5
Unit
Water flow l/s 3.4 5.0 4.1
Pressure drop kPa 102.32 128.96 136.38
Dry Cooler
Water Volume L 55.9 55.9 55.9
Flowrate l/s 3.4 5 5.3
Pressure Drop kPa 59.3 110.3 121.5
Fan Motor
Backwards Curved, Centrifugal direct drive
Motor Type EC EC EC
Quantity x Motor Size kW 3 x 3.1 3 x 3.1 3 x 3.1
Speed @25Pa ESP/ maximum ESP rpm 1061 / 1520 1261 / 1520 1479 / 1520
Maximum ESP Pa 528 330 77
Nominal Airflow m³/s 5.8 6.9 7.9
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 3.3 2 x 3.3 2 x 3.3
Oil Type Polyolester
Connections
Glycol Connections Inlet/Outlet – F0 mm 42 42 54
Condensate Drain Hose mm 22 22 22
Filtration Disposable to BS EN 779-G4
Quantity 4 4 4
OPTIONAL EXTRAS
Hot Gas Reheat - X
Nom Heating (Gross) kW 14.6 16.1 16.1
Electric Heating (Total)
kW 31.5 31.5 31.5
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
Quantity x Motor Size kW N/A N/A N/A
Speed @ 25Pa / maximum ESP 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
Second upgrade Fan Motor - EC Motor
Quantity x Motor Size kW N/A N/A N/A
Speed @ 25Pa / maximum ESP 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 40.6 43.8 45.2
Water Flow (Nominal) l/s 0.9 0.97 1.01
Pressure Drop kPA 35.9 37.4 38.8
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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