Technical data

/08.2011/18/10
EN
5.1 Application limits
The STULZ CyberAir 3 CW units are provided for ope-
ration within the following ranges:
- Admissible return air conditions:
Temperature:
Lower limit: 18°C
Upper limit: 35°C
Humidity:
Lower limit: 5,5°C dew point
Upper limit: 60% r.h. and 15°C dew point
- Chilled water conditions:
min. temperature at the unit inlet: 5°C
min temp. difference with 5°C EWT: 5 K
max. head pressure: 16 bar
- Storage conditions:
Temperature [°C]: -20 - +42
Humidity [% rel. h.]: 5 - 95
Atmosphere pressure [kPa]: 70 - 110
- Voltage: Standard
380V / 3ph / 50Hz; N; PE
380V / 3ph / 60Hz; N; PE
400V / 3ph / 50Hz; N; PE 460V / 3ph / 60Hz; PE
415V / 3ph / 50Hz; N; PE
- Voltage tolerance: +/- 10%
- Frequency: 50 Hz +/- 1%
60 Hz +/- 1%
- Hot water conditions for optional heating coil:
max. inlet water temperature: 110°C
max. water head pressure: 8.5 bar
The warranty is invalidated for any possible damage or
malfunction that may occur during or in consequence of
operation outside the application ranges.
5. Technical data
Design conditions for technical data:
Electrical connection:
for Downflow units with an external static pressure:
for Upflow units with an external static pressure:
CW Units
Return air conditions for cooling capacity:
EWT - Entering water temperature:
LWT - Leaving water temperature:
Cooling fluid:
The sound pressure levels are valid at a height of 1m and distance of 2m in front of the unit under free field conditions
and with nominal data. The values take into account the effects of all installation and design parts contained in the
standard unit. The values for upflow units assume an installed discharge duct.
400V/3ph/50Hz
20 Pa
50 Pa
24°C, 50% rel. humidity
7°C
12°C
Water, 0% Glycol