Replacement of Supply Air Grill and Return Air Grill of different sizes and other allied works in 2nd Floor of Library Bldg. IIT Delhi

Supplying & fixing of following different sizes of powder coated extruded aluminium Supply Air Grills with adjustable aluminium volume control dampers complete with neoprene rubber gaskets, nuts, bolts, screws linkages, flanges etc. in the existing opening on duct including removing the existing grill etc. as directed by the engineer -incharge.

0.67 m X 0.32 m Size

0.82 m X 0.36 m Size

0.97 m X 0.26 m Size

0.82 m X 0.26 m Size

0.97 m X 0.21 m Size

0.97 m X 0.36 m Size

1.28 m X 0.36 m Size

0.97 m X 0.31 m Size

0.57 m X 0.36 m Size

Supplying, fixing testing commissioning of supply air diffusers of powder coated aluminium with aluminium volume control dampers with anti smudge ring & removable core. Size of diffuser shall be finalised by Engineer -Incharge.

Supplying, fixing testing commissioning of following different sizes of Return air diffusers of powder coated aluminium without volume control dampers with anti smudge ring & removable core complete with neoprene rubber gaskets, nuts, bolts, screws linkages, flanges etc. in the existing opening on ceiling including removing the existing diffusers etc. as directed by the engineer -incharge..

0.58 m X 0.58 m Sizes

0.27 m X 0.27 m Sizes

0.7 m X 0.7 m Sizes

Supply, installation, balancing and commissioning of fabricated at site GSS sheet metal rectangular/round ducting complete with neoprene rubber gaskets, elbows, splitter dampers, vanes, hangers, supports etc. as per approved drawings and specifications of following sheet thickness complete as required.

Thickness 0.63 mm sheet

Thickness 0.80 mm sheet

Supplying and fixing of following thickness duly laminated aluminum foil of mat finish closed cell Nitrile rubber (Class "O") insulation on existing duct after applying suitable adhesive for Nitrile rubber. The joints shall be sealed with 50 mm wide and 3 mm thick self adhesive nitrile rubber tape insulation complete as per specifications and as required.

Supply, installation, testing and commissioning of Motorized (ON-OFF Type) duct mounted GI volume control damper with enthalpy sensor and necessary control wire (minimum 1.5 sqmm) for automatic localized control as per room tempreture.

Damper

Actuator

Cleaning of inside surface of supply Duct of HVAC system by (NADCA certified duct cleaning agency) using high power vacuum, air compressor, robotic camera, air hammer, special nozzles, air sweep with other required accessories giving / showing inspection of dust before and after cleaning of duct using colour video inspection.(Standard and shall be treated as scope of this work)

Air Balancing followed by testing, Duct Leakage Testing (Smoke Testing) by identifying sectionalised ductwork, sealing ductwork, pressure testing by applying static pressure, measurement of flow, comparing standards stc. As required.