Specifications include, but are not limited to: The Contractor is directly responsible for the removal and disposal of the existing roof mounted McQuay (RCS 015- 135C) Roofpak Singlezone from the roof of the Old Saybrook Town Hall and its replacement with a new Daikin (DPSA031) HVAC Unit at the same pedestal location. The Contractor will be held responsible for: • securing all permits from the Town, written proof of insurance certificate for liability naming the Town as additional insured, and proof of Workers Compensation Insurance (see last page); • reusing the existing roof curb box (CURB-IN-36B,18 -HC60D7-2) previously used as a pedestal for a McQuay Unit (RCS 015-135C Roofpak) for the installation with a new Daikin (DPSA031) in accordance with manufacturer’s instructions. In addition, all ductwork must be inspected to insure it is secured and sealed around the curb box and does not interfere with the clearances required for the supply/return ductwork before the unit is set in place with a new pressure-sensitive gasket. For safety and sound considerations, do not cut out any additional roof deck with the curb box area unless necessary; • examining existing supply and return ductwork routing through the exterior brick wall of the building to determine if modifications may be required to secure and seal the ductwork extending through the building’s exterior walls; • removing existing metal ductwork insulation and making repairs to correct the damaged sagging sections, testing to eliminate air leakages, and sealing all metal ductwork connections before reinstallation. Reinsulate the exterior of all ductwork, (new and existing) with FlexClad-400 pre-fabricated weatherproof rated membrane with appropriate overlapping; • removing existing roof duct support struts and footings and installing improved struts supporting the footing padding to lessen indentations or damage to the existing EPDM membrane; • extreme caution should be used when lifting the existing McQuay unit off the curb cradle to lessen any possible damage to the EPDM roofing material surrounding the roof curb enclosure and pressure-sensitive gasketing material lining on the top of the curb box which may have to be replaced after inspection. Laying down temporary walking pads or plywood sheeting is recommended to prevent unnecessary damage or wear to the existing roofing layer during construction activities that may require repairs at the conclusion of this project by the Contractor;
