E/0204/39/62
B
B
1
1
B = min 500mm
IMPORTANT NOTE IN CASE DUCTS ARE NOT PROVIDED AS OPTION BY STULZ: condenser
air, passing through connection ducts (not supplied by STULZ) has pressure losses, depending
on the dimensioning of these ducts. Pressure losses through these ducts may not exceed the
available static pressure specified in the technical data sheets of this manual (see first pages of
this manual). If this happens, correct operation and performance of the unit are not assured.
vertical application with
free cooling
1: Option (DVIN) for vertical
application
Another opening is necessary for exhaust air discharge during free-cooling.
Minimum sections of this opening are:
•
0.15 m
2
for Split-Air CST40/50;
•
0.24 m
2
for Split-Air CST60/80.
On this opening, an overpressure damper shall be installed to prevent cooled internal air to go out
from the opening when the unit works in cooling mode. In addition, another rain-proof grille shall be
installed. Both discharge grille and overpressure damper fixed to this grille are included in the
GRxxSOP option; otherwise they have to be provided by the client.
Dimensions of exhaust air discharge opening, to match the grille supplied with GRxxSOP option,
are:
•
Width = 500 mm; Height = 300 mm for Split-Air CST40/50;
•
Width = 800 mm; Height = 300 mm for Split-Air CST60/80.
