E
APPENDIX E
Flexible Duct Installation Checklist
□ Horizontal runs are supported at 4’ maximum intervals (Section 4.5) □ Vertical risers are supported at 6’ maximum intervals (Section 4.5) □ All duct supporting material is at least 1.5” wide at point of contact with the duct surface. (Section 4.5) □ All plastic clamps used are listed & labeled per UL181 and marked Ul 181B - C (Listing found on clamp bags) □ All tape used to seal was listed & labeled per UL 181 and marked UL 181 B - FX (Listing found on the tape) □ All mastic used to seal was listed & labeled per UL 181 and marked UL 181 B - FX (Listing found on mastic container) □ Ducts are installed fully extended (Section 4.4 & Section 4.6) □ Duct bends are at least one duct diameter bend radius (Section 4.3) □ Duct inner core is installed at least 1 inch onto collars and past the bead prior to the application of the tape or mechanical fastener. (Section 4.7) □ Duct outer vapor barrier is secured using two wraps of Listed Tape where required by the building codes. (Section 4.7) □ Duct is not crimped tightly against any other objects. (Section 4.3) □ Duct is not exposed to weather or UV light (Unless otherwise specified by the manufacturer) (Section 3.7) □ Contact with other ducts or fixtures is minimized to prevent condensation (Section 4.12) □ Air Connectors do not exceed 14 feet in length (Section 3.1.2)
37
Made with FlippingBook. PDF to flipbook with ease