Direct Outside Air Free Cooling Solutions for Data Centre

Notes: 1. Nett sensible cooling takes into account heat gain from the fans and is based on typical external airflow resistance of 100Pa. 2. All free cooling units include a motorised damper on outside air return air connections 3. Electric heaters for dehumidification etc. are available to suit application. 4. Rooms require pressure relief devices when fresh air free cooling units are operating on full outside air mode. 5. Filters - G4 standard but higher efficiency pleated panel filters available. 6. Down-flow unit plinths are supplied separately and can be manufactured to suit varying floor void depths. 7. All units require a three phase and neutral power supply. 8. Full sound spectrum data for each fan is available on request. 9. Humidity control options available. W100 DF 7.36 3.5 l/s ... 5.1 l/s 3 Down-flow 3,140 2,450 1,000 1,000 10 89 12 106.8 W66 DF 5 2.4 l/s ... 3.5 l/s 2 Down-flow 2,340 2,400 1,000 700 10 60.5 12 72.6 W55 DF 4.16 2.0 l/s ... 2.9 l/s 2 Down-flow 1,940 2,400 1,000 650 10 50.3 12 60.4 Model Delta T (R/A - S/A) Sensible Cooling Duty Supply Air Temperature Range CHW IN Temperature Range CHW OUT Temperature Range Supply Air Volume CHW Flow Rate Range Number of Supply Fans Configuration Unit Width Unit Height (exc. plinth) Unit Depth Unit Weight W30 DF 2.27 1.1 l/s ... 1.6 l/s 2 Down-flow 1,640 1,950 850 525 10 27.5 12 33 Δ ∆ T kW ºC ºC ºC m 3 /s I/s mm mm mm kg 12ºC.....26ºC 6ºC.....13ºC 12ºC.....20ºC W45 DF 3.5 1.71 l/s ... 2.4 l/s 2 Down-flow 1,940 2,150 1,000 600 10 42.3 12 50.8 Performance W100DF 400V/3ph/50Hz 15.8 W66DF 400V/3ph/50Hz 10.9 W55DF 400V/3ph/50Hz 9.6 Model Electrical Supply (V/-Hz) Supply FLC with EC Fans (Amps) W30DF 400V/3ph/50Hz 5.2 W45DF 400V/3ph/50Hz 10.8 Electrical Details Technical Data FA/CW Cooling Solutions W Series Cooling Range