Vol 2 - Garney Construction

3.09 BALANCING OF AIR SYSTEMSA. Perform air balancing in accordance with requirements of Section 23 05 93,Testing, Adjusting, and Balancing for HVAC.3.10 PROTECTION OF INSTALLED WORKA. Open ends of installed ductwork systems shall be covered to prevent dust,foreign objects and water from entering ductwork.B. Ductwork systems shall not be used for air conveyance until adequate airfiltration devices are installed in air handling equipment, to prevent ingress ofconstruction dust.3.11 CLEANINGA. Ductwork shall be cleaned of rust, dust, and debris, both internally andexternally, before placing in operation.B. Before installing air outlets, use air handler to blow dry air through entiresystem at maximum attainable velocity. Provide temporary air filters for thisoperation.C. If duct systems are found to contain construction debris at time of constructioncompletion Contractor shall provide complete ductwork system cleaning inaccordance with NADCA Standards.END OF SECTIONPW/WBG/382059METAL DUCTS AND ACCESSORIESAUGUST 15, 2012 23 31 13 - 17©COPYRIGHT 2012 CH2M HILL