3.3.1.1. AHU Demolition • Demolish existing air handling unit. • Demolish supply air duct to point shown. Keep existing distribution intact. Refer. to section 1/ Ml.1. • Demolish outside air duct to point shown. Refer to section 1 / Ml. • Remove outside air louver section and OA plenum to allow removal of AHU from equipment room. Items to be reinstalled under new work. • Demolish pneumatic control panel and air lines associated with the AHU. • Existing plasma air ionization system to remain. • • 'oemoiish exciting cond,insiniiunit, complete. Including uriit.,"ilping, electrical connections, ETC. See work on W2.1. • Existing relief lover to remain. • Existing relief air damper to remain. Demolish pneumatic damper actuator. • Remove supply air duct smoke detector. relocate under new work. • Demolish refrigerant piping (typ. 2 sets) 3.3.1.Z. • • • • • • • New Work Notes New air handling unit. Refer to equipment schedule on sheet Ml.1. Reconnect supply air duct to point shown. Provide transition duct. Reconnect outside air duct to point shown. Provide transition duct. Reinstall outside air louver section and OA plenum after new unit is brought into equipment room. Reinstall outside transition duct. Provide new condensing unit complete including unit, piping, electrical connections, etc. Refer to equipment schedule on sheet M3.1. Route new refrigerant piping from new AHU to new condensing unit. Size piping in accordance with manufacturer's instructions. See work on M2.1. Route full size condensate to existing drain. Provide new modulating damper and 24 VAC damper motor. • Provide new DDC control panel, 120V. • Maintain 3' filter clearance for filter maintenance. • Provide new 24 VAC damper motor. 3.3.1.3. Electrical Demolition Plan First floor and Equipment Yard • Exciting 200N3P associated with CU-3 shall remain. • Exciting 200A/3P not in use shall be disconnected and removed. Associated branch circuit shall be removed back to MSB. • Existing control panel associated with AHU-1being demolished shall be. removed by the mechanical. Associated 120V branch circuit shall remain to supply new AHU control panel. Refer to 2/E2.1for details. • Exciting 200N3P disconnect associated with condensing units being demolished shall be disconnected and removed along with all associated conduit and conductors. • All electrical equipment exists to remain unless noted otherwise. • Exciting duct mounted smoke detector associated with AHU-1 shall remain. 3.3.1.4. New Power Install Plan First Floor and Equipment Yard • New AHU-1 and associated VFD shall be furnished and installed by mechanical. Electrical contractor shall connect branch circuit as shown. • Coordinate with mechanical for connection to new duct heater EDH-1 • Refer to panel schedules for modification to exciting panel.
