PERFORMANCE OF THE SYSTEM
Tightness
The pre-insulated AIRWENT SYSTEM ventilation ensures Class D tightness
ROUND - according to PN-EN 12237:2005 WO-KOT/36/01, Ed. 2; Test conditions: -750 to 2000 Pa
RECTANGULAR - according to PN-EN 1507:2007 WO-KOT/36/01, Ed. 2; Test conditions: -500 to 1000 Pa
Strength
ROUND - No permanent deformation or sudden change of tightness at the limit values of static pressure according to PN-EN 12237:2005 WO-KOT/36/01, Ed. 2; Test conditions: -750 to 2000 Pa
RECTANGULAR- No permanent deformation or sudden change of tightness at the limit values of static pressure according to PN-EN 1507: 2007 WO-KOT/36/01, Ed. 2; Test conditions: -500 to 1000 Pa
Zinc coating durability
Due to the requirements for corrosion resistance, pre-insulated PIANO-SYSTEM +I ventilation ducts made of galvanised DX51D Z275 steel sheet, according to PN-EN 10346:2015 standard, have high durability and can be used in C1, C2 and C3 corrosivity atmospheres, according to PN-EN ISO 9223:2012.
Fire classification
Pre-insulated PIANO-SYSTEM +I ventilation ducts have been classified as B-s3, d0 reaction to fire class, according to PN-EN 13501-1:2019 and as non-flammable, non-drip and non-spreading fire from the building’s interior, according to the ordinance of the Minister of Infrastructure of 12 April 2002 (Journal Of Laws No. 75 of 12 April 2002, Item 690 as amended). At the same time, the products are classified as not falling during a fire. The above classification applies to pre-insulated PIANO-SYSTEM+I ventilation ducts mounted directly to components with reaction to fire classes A1 or A2, according to PN-EN 13501-1:2019 or at any distance from them.
Typical fittings of the rectangular ducts system:
- PIANO-SYSTEM K+I straight ducts;
| Duct side dimension A, B, mm | Duct length L, mm |
| 100 ÷ 2000 | 50 ÷ 1500 |
| Dimension tolerances acc. to PN-EN 1505:2001 |
| Fig. A1. Straight duct PIANO-SYSTEM K+l |
- PIANO-SYSTEM BS+I symmetrical elbows;- PIANO-SYSTEM BS+I asymmetrical elbows;- PIANO-SYSTEM ŁP+I bends;
| Duct side dimension A, B, mm | Dimension E, F, mm | α,° |
| 100 ÷ 2000 | ≥ 100 | 0 ÷ 135 |
| Dimension tolerances acc. to PN-EN 1505:2001 |
- PIANO-SYSTEM US+I; diffusers/reducers/symmetrical adapters
| Duct side dimension A, B, C, D, mm | Dimension L, mm |
| 100 ÷ 2000 | 100 ÷ 1500 |
| Dimension tolerances acc. to PN-EN 1505:2001 |
| Fig. A4. Symmetric diffusers (reducers) PIANO-SYSTEM US+I |
- PIANO-SYSTEM UA+I; diffusers/reducers/asymmetrical adapters
| Duct side dimension A, B, C, D, mm | Dimension E, F, mm | Dimension L, mm |
| 100 ÷ 2000 | 0 ÷ 2000 | 100 ÷ 1500 |
| Dimension tolerances acc. to PN-EN 1505:2001 |
| Fig. A5. Asymmetric diffusers (reducers) PIANO-SYSTEM UA+I |
- PIANO-SYSTEM RS+I symmetrical round/rectangular adapters;
| Duct side dimension A, B, mm | Diameter D, mm | Diameter d, mm | Stub-pipe length, mm | Dimension L, mm |
| 100 ÷ 1000 | 120 ÷ 500 | 100 ÷ 480 | 70 | 200 ÷ 1000 |
| Dimension tolerances acc. to PN-EN 1505:2001 |
| Fig. A6. Symmetric circular-rectangular reducers PIANO-SYSTEM RS+I |
- PIANO-SYSTEM RA+I asymmetrical round/rectangular reductions adapters;
| Duct side dimension A, B, mm | Diameter D, mm | Diameter d, mm | Stub-pipe length, mm | Dimension L, mm | Dimension E, F, mm |
| 100 ÷ 1000 | 120 ÷ 500 | 100 ÷ 480 | 70 | 200 ÷ 1000 | ≤ 1000 |
| Dimension tolerances acc. to PN-EN 1505:2001 |
| Fig. A7. Asymmetric circular-rectangular reducers PIANO-SYSTEM RA+I |
- PIANO-SYSTEM TRS+I symmetrical tees;
| Duct side dimension A, B, H, mm | Dimension E, F, mm | Dimension L, mm |
| 100 ÷ 2000 | ≥ 100 | 300 ÷ 1500 |
| Dimension tolerances acc. to PN-EN 1505:2001 |
| Fig. A8. Symmetric tee PIANO-SYSTEM TRS+I |
- PIANO-SYSTEM TRA+I asymmetric tees;
| Duct side dimension A, B, D, H, mm | Dimension E, F, mm | Dimension L, mm |
| 100 ÷ 2000 | ≥ 100 | 300 ÷ 1500 |
| Dimension tolerances acc. to PN-EN 1505:2001 |
| Fig. A9. Asymmetric tee PIANO-SYSTEM TRA+I |
- PIANO-SYSTEM TRO+I rectangular tees with round branch duct;
| Duct side dimension A, B, mm | Diameter D, mm | Diameter d, mm | Stub-pipe length, mm | Dimension L, mm |
| 100 ÷ 2000 | 120 ÷ 500 | 100 ÷ 480 | 70 + insulation layer thickness | 220 ÷ 600 |
| Dimension tolerances acc. to PN-EN 1505:2001 |
| Fig. A10. Rectangular tee with circular outlet PIANO-SYSTEM TRO+I |
- PIANO-SYSTEM CZ+I cross fittings;
| Duct side dimension A, B, C, D, H, mm | Dimension F, G, M, N, mm | Dimension L, L1, mm |
| 100 ÷ 2000 | ≥ 100 | L = B + 2 • F L1 = H + M + N |
| Dimension tolerances acc. to PN-EN 1505:2001 |
Fig. A11. Cross-piece PIANO-SYSTEM CZ+I
- PIANO-SYSTEM ES+I offset pipes;
| Duct side dimension A, B, mm | Dimension E, mm | Dimension L, mm |
| 100 ÷ 2000 | 0 ÷ 2000 | 100 ÷ 1500 |
| Dimension tolerances acc. to PN-EN 1505:2001 |
| Fig. A12. Offset PIANO-SYSTEM ES+I |
- PIANO-SYSTEM F+I lids;
| Duct side dimension A, B, mm |
| 100 ÷ 2000 |
| Dimension tolerances acc. to PN-EN 1505:2001 |
| Fig. A13. Lid PIANO-SYSTEM F+l |
Typical fittings of the round ducts system:
- PIANO-SYSTEM SPIRO+I straight ducts
| Duct diameter Ød, mm | Diameter ØD, mm | Duct length L, mm |
| 100 ÷ 480 | 120 ÷ 500 | ≤ 3000 |
| Dimension tolerances acc. to PN-EN 1506:2007 |
| Fig. A1. Straight duct PIANO-SYSTEM SPIRO+I |
- PIANO-SYSTEM KS+I segment elbows
| Duct diameter Ød, mm | Diameter ØD, mm | ° α, |
| 100 ÷ 480 | 120 ÷ 500 | 0 ÷ 135 |
| Dimension tolerances acc. to PN-EN 1506:2007 |
| Fig. A2. Segmented elbow PIANO-SYSTEM KS+I |
- PIANO-SYSTEM TS+I symmetrical tees; - PIANO-SYSTEM TSA+I asymmetric tees
| Duct diameter Ød1, Ød2, mm | Diameter ØD1, ØD2, mm | Dimension of the connecting stub pipe, mm | Dimension L, mm |
| 100 ÷ 480 | 120 ÷ 500 | 70 + insulation layer thickness | 220 ÷ 600 |
| Dimension tolerances acc. to PN-EN 1506:2007 |
| Fig. A3. Symmetric tee PIANO-SYSTEM TS+I; Asymmetric tee PIANO-SYSTEM TSA+I |
- PIANO-SYSTEM RSS+I symmetric segment adapters
| Duct diameter Ød1, Ød2, mm | Diameter ØD1, ØD2, mm | Dimension of the connecting stub pipe, mm | Dimension L, mm |
| 100 ÷ 480 | 120 ÷ 500 | 70 + insulation layer thickness | 220 ÷ 500 |
| Dimension tolerances acc. to PN-EN 1506:2007 |
| Fig. A4. Symmetric segmented reducer PIANO-SYSTEM RSS+I |
- PIANO-SYSTEM RSA+I asymmetric segment adapters
| Duct diameter Ød1, Ød2, mm | Diameter ØD1, ØD2, mm | Dimension of the connecting stub pipe, mm | Dimension L, mm | Dimension e, mm |
| 100 ÷ 480 | 120 ÷ 500 | 70 + insulation layer thickness | 220 ÷ 500 | ≤ 220 |
| Dimension tolerances acc. to PN-EN 1506:2007 |
| Fig. A5. Asymmetric segmented reducer PIANO-SYSTEM RSA+I |
- PIANO-SYSTEM CZO+I cross fitting
| Duct diameter Ød1, Ød2, Ød3, mm | Diameter ØD1, ØD2, ØD3, mm | Dimension of the connecting stub pipe, mm | Dimension L, mm |
| 100 ÷ 480 | 120 ÷ 500 | 70 + insulation layer thickness | 220 ÷ 600 |
| Dimension tolerances acc. to PN-EN 1506:2007 |
| Fig. A6. Cross-piece PIANO-SYSTEM CZO+I |
- PIANO-SYSTEM N+I nipples
| Duct diameter ØD, mm | Dimension of the connecting stub pipe, mm |
| 100 ÷ 480 | 70 ÷ 80 |
| Dimension tolerances acc. to PN-EN 1506:2007 |
| Fig. A7. Nipple PIANO-SYSTEM N+l |
- PIANO-SYSTEM FO+I lid
| Duct diameter Ød, mm | Diameter ØD, mm | Dimension of the connecting stub pipe, mm |
| 100 ÷ 480 | 120 ÷ 500 | 60 |
| Dimension tolerances acc. to PN-EN 1506:2007 |
| Fig. A8. Lid PIANO-SYSTEM FO+l |
- PIANO-SYSTEM SO+I Outlet grill
| Duct diameter Ød1, mm | Diameter ØD1, mm | Dimension of the connecting stub pipe, mm |
| 100 ÷ 480 | 120 ÷ 500 | 60 |
| Dimension tolerances acc. to PN-EN 1506:2007 |
| Fig. A9. Outlet grill PIANO-SYSTEM SO+I |
4.0 
