Sky Air and VRV condensing ERX units
Daikin Europe N.V. (08/12/2005)
Daikin Sky Air and VRV condensing units adapted for connection to the direct expansion cooling coils of air handling applications.
Daikin Europe N.V. can now offer inverter driven Sky Air and VRV R-410A outdoor condensing units with a special communication box (EKEX) interface and expansion valve kit (EKEXV) for connection to the direct expansion cooling coils of 3rd party manufactured air handling units.
The new Sky Air condensing units, designated ERX and suitable for ‘pair’ cooling applications, are available for single phase (ERX140), 3 phase (ERX200 and 250) and single/3 phase (ERX100 and 125) connection. These units replace the company’s type EKRPER R-407C units with the exception of the earlier 200 and 250 models, which will remain available throughout 2006.
Operating limits of the condensing units are based on the ambient air temperature of the air handling unit and maximum air handling unit entering temperatures of 14°C WB and 25°C WB/35°C DB respectively. Ambient temperatures for expansion valve and condensing unit are – 5°C DB to 46°C DB (single phase) and – 5°C DB to 43°C DB (3 phase). Maximum system design pressure is 40bar.
Standard 5 to 18HP VRV outdoor units can also be adapted for ‘multi’ air handling unit cooling applications linking them to air handling units and VRV indoor units.
Application flexibility of these new packages is maximised for both pair and multi combinations by a choice of several expansion valve kits and two different communication boxes depending on air handling unit coil volume, VRV unit connection ratios and number of indoor units. Three alternative control formats can be selected, offering air temperature control via external DDC controller, evaporating temperature control by Daikin or air temperature control via Daikin controller.
