Mechanical Data – W2W2
SC19D055-W2W2 SC19D070-W2W2 SC19D080-W2W2
Standard Dry Cooler Match 2 x DR40 2 x DR55 2 x DR55
Capacity
Nom Cooling (Gross) – W2 (1) kW 53.0 66.9 76.1
Total Heat of Rejection – W2 kW 68.2 85.6 97.7
Capacity Steps 4 4 4
Fan Gain (5) kW 0.55 1.12 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
(2) Kg 940 / 940 970 / 980 970 / 980
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 4/1 4/1 4/1
Condenser
Stainless Steel Brazed Plate
Water Volume L 4.1 10 10
water Flow l/s 1.65 2.08 2.39
Pressure Drop Condenser kPa 71.9 35.3 35.3
Dry Cooler
Water Volume L 23.1 43.2 43.2
Flowrate l/s 1.65 2.08 2.39
Pressure drop kPa 35 25 30
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 / Maximum ESP RPM 906 / 1360 1160 / 1360 1280 / 1360
Maximum ESP Pa 490 260 110
Nominal Airflow m³/s 3.5 4.4 5.1
Compressor – Scroll
Configuration – W2W2
Dual Circuit– Circuit 1 Tandem Compressors (Water Cooled)
Circuit 2 Tandem Compressors (Water Cooled)
Quantity – W2W2 2 2 2
Oil Charge Volume – W2W2 l 4 x 1.57 4 x 1.57 4 x 1.57
Oil Type Polyolvinyl
Refrigeration
Dual Circuit
Refrigerant control and type Thermostatic Expansion Valve (Optional EEV)
Refrigerant type R410A
Holding Charge Inert Gas
Charge (Per circuit) kg 5.75 7.32 7.32
Connections
Water Inlet / Outlet –W2 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 -
(3)
Nom Heating (Gross) kW 8.1 8.9 9.5
Electric Heating (Total)
kW 21 21 21
Humidifier
Capacity kg/hr 15 15 15
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 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 / Maximum ESP rpm 922 / 1500 1187 / 1520 1364 / 1520
Maximum ESP Pa 640 411 215
Fan Gain (5) kW 0.55 1.14 1.73
Second upgrade 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 22.16 24.45 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 condensing water in / out: 35/40°C
(2) Machine weight Includes a refrigerant charge / Operating weight includes calculated water volume
(3) Based on air temperature of 15.5 °C leaving the evaporator coil
(4) Based upon low pressure hot water 82 °C inlet / 71°C outlet. Air on 20°C.
(5) Fan gain based on 25 Pa ESP @ nominal air volume. Fan gain figure will change as airflow and ESP change.
W2W2
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