Connecting the air ducts

• We recommend the use of DIN 24245 folded spiral-seams ducts for the air ducts. If there isn't enough space for these ducts, flat channels made from metal or plastic can be used.

Ensure that the cross-sections are large enough. Higher pressure losses, from small duct cross-sections or a large number of elbows, will have a major impact on system performance.

Installation suggestions

• In hall ceilings (entrances) and in suspended ceilings.

We would recommend installing a sound absorber for “K1/K2/K3” variants with a duct connection in the supply air or exhaust air duct.

Thermal insulation

• The supply air and exhaust air ducts (“K1/K2/K3” variants with duct connection) in unheated areas must be thermally insulated to a thickness of at least 50 mm (mineral wool, Aeroflex®).
• Outside air and outgoing air ducts must be protected from the build-up of condensation through the use of impermeable thermal insulation to a thickness of at least 50 mm.