PIANO-SYSTEM ND+I Rectangular Cowl

Depending on the type of installation that Piano System Cowl ND+I are intended to protect, they come in several variants that can be freely combined or modified as needed:VARIANT I - SCREW-ON CAP for ducts with screws and self-locking nutsVARIANT II - HINGED CAP - Hinged flapOption 1 - CAP WITHOUT OPENINGSOption 2 - CAP WITH OPENINGS - quantity, shape, and dimensions of openings according to the Customer's specificationSide A - SIDES WITHOUT OPENINGSPiano System Cowl ND+I without technical openingsSide B - SIDES WITH OPENINGSPiano System Cowl ND+I with a rectangular or circular technical opening, ready for installation, e.g., wall intakes/outletsThe number of openings is arbitrary on each side of the cap.

Types:

1. [I-1-A] Piano System Cowl ND+I; VARIANT I (SCREW-ON CAP); Option 1 (CAP WITHOUT OPENINGS); Side A (SIDES WITHOUT OPENINGS)
2. [I-1-B] Piano System Cowl ND+I; VARIANT I (SCREW-ON CAP); Option 1 (CAP WITHOUT OPENINGS); Side B (SIDES WITHOUT OPENINGS)
3. [I-2-A] Piano System Cowl ND+I; VARIANT I (SCREW-ON CAP); Option 2 (CAP WITHOUT OPENINGS); Side A (SIDES WITHOUT OPENINGS)
4. [I-2-B] Piano System Cowl ND+I; VARIANT I (SCREW-ON CAP); Option 2 (CAP WITHOUT OPENINGS); Side B (SIDES WITHOUT OPENINGS)
5. [II-1-A] Piano System Cowl ND+I; VARIANT II (HINGED CAP); Option 1 (CAP WITHOUT OPENINGS); Side A (SIDES WITHOUT OPENINGS)
6. [II-1-B] Piano System Cowl ND+I; VARIANT II (HINGED CAP); Option 1 (CAP WITHOUT OPENINGS); Side B (SIDES WITHOUT OPENINGS)
7. [II-2-A] Piano System Cowl ND+I; VARIANT II (HINGED CAP); Option 2 (CAP WITHOUT OPENINGS); Side A (SIDES WITHOUT OPENINGS)
8. [II-2-B] Piano System Cowl ND+I; VARIANT II (HINGED CAP); Option 2 (CAP WITHOUT OPENINGS); Side B (SIDES WITHOUT OPENINGS)

Variants: SCREW-ON CAP HINGED CAPSCREW-ON CAP Variant I XHINGED CAP X Variant IICAP WITHOUT OPENINGS SIDES WITHOUT OPENINGS Variant I Option 1 Side A Variant II Option 1 Side ACAP WITHOUT OPENINGS SIDES WITH OPENINGS Variant I Option 1 Side B Variant II Option 1 Side BCAP WITH OPENINGS SIDES WITHOUT OPENINGS Variant I Option 2 Side A Variant II Option 2 Side ACAP WITH OPENINGS SIDES WITH OPENINGS Variant I Option 2 Side B Variant II Option 2 Side B

CONSTRUCTION

1. Inner shell
2. Outer shell
3. Polyurethane foam insulation layer
4. Collar/angle bracket adjacent to the ceiling
5. Roofing membrane - roof insulation layer
6. Ceiling
7. Inner duct connection frame
8. Outer duct connection frame
9. Expansion plug
10. Rivet
11. Ceiling insulation layer
12. Seal
13. Technical opening

The inner duct shell and the outer duct shell of the straight duct are joined longitudinally using sheet metal locks (Pittsburgh type lock) or welded. The corners of the collar frames are sealed with silicone sealant.

Assembly variants of the Piano System Cowl ND+I cover:

1. Cover connected on one side with steel hinges, mounted using rivets, creating a hinged flap, which can additionally be secured with M8 screws (for N+P20 collar) or M10 screws (for N+P30 collar) and self-locking nuts.
2. Assembly of the cover using collar connections, fastened with M8 screws (for N+P20 collar) or M10 screws (for N+P30 collar) according to DIN 933 or PN-EN ISO 4017:2014 and self-locking nuts. The Nasada ND+I is installed on the ceiling using expansion plugs, one in each corner and on the sides at a distance of every 0.5 m.Collar connection frames of the cover with the duct of the Piano System Cowl ND+I (for the outer duct shell) elements with a side length greater than 500 mm can (but do not have to) be additionally reinforced with sheet metal clamps. The maximum distance between the clamps at the corner collar connection and relative to each other should be 500 mm.