E/0204/39/66
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.
1: wall cut-out
CST 40-50 CST 60-80
500 x 300 mm 800 x 300 mm
2: grille with overpressure damper
3: wall cut-out
CST 40-50 CST 60-80
650 x 220 mm 770 x 270 mm
4. grille
5: wall plate for Free Cooling circular duct
6: flexible ducts for Free Cooling with fixing clamps (max length 2 m - min length 0.2 m)
7: Indoor unit with Free Cooling option (and optional circular intake: DHINRO)
To position the cut-out of item 3 correctly in relation to the unit,
take the center point in the drawing A of page 11,13 as a reference.
The center point of the unit opening and the center point of the
wall plate are identical.
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