Design, procurement, assembly, shop testing, supply, erection and commissioning of double skin Air handling units along with accessories for WIP

Design, Fabrication and Supply of Double Skin Floor mounted Air Handling units of Capacity 30 TR - SP 80 mm WG, flow 20000 CMH, horizontal type floor mounted AHU comprising fan, pre-filter of 10 micron (HDPE-Washable type), Hinged inspection door, cooling coil section with cooling coil of 8 row deep made up of copper & aluminium blue fin coating, fan section with DIDW backward centrifugal blower, return air thermostat with control wiring, foot mounted motor with star & delta starter, external panel with RYB indication & On/Off indication including power cable & control cable between AHU motor to panel, control cable for thermostat, cable for flow meter, taper lock pulley, V belt arrangement, SS 304 drain pan tray with 9 mm thick electrometric foam and plenum chamber. Double skin sandwich panels are fabricated from inside with 22 gauge stainless steel (SS 304) & outside with 22 gauge imported high polymer coated (pre-painted) galvanized sheet steel (GSS) with protection film on top. The panels are polyurethane foam injected, with PUF density of 45 kg/cub.metre, resulting in high rigidity & sound attenuation characteristics. The detachable panel thickness is 50±3 mm. Entire unit is mounted on 2.0 mm (14 G) galvanized sheet steel channels of 100 mm. height & Aluminium die cast legs with provisions of lifting holes. Other details as per the Technical specifications.

Erection, Testing & Commissioning of Double Skin Floor mounted Air Handling units of Capacity 30 TR - SP 80 mm WG, flow 20000 CMH (Item Sl. No. 1) return air thermostat with control wiring at site as per the Technical specifications

Design, Fabrication and Supply of Double Skin Floor mounted Air Handling units of Capacity 30 TR - SP 80 mm WG, flow 15000 CMH, horizontal type floor mounted AHU comprising fan, pre-filter of 10 micron (HDPE-Washable type), Hinged inspection door, cooling coil section with cooling coil of 8 row deep made up of copper & aluminium blue fin coating, fan section with DIDW backward centrifugal blower, return air thermostat with control wiring, foot mounted motor with star & delta starter, external panel with RYB indication & On/Off indication including power cable & control cable between AHU motor to panel, control cable for thermostat, cable for flow meter, taper lock pulley, V belt arrangement, SS 304 drain pan tray with 9 mm thick electrometric foam and plenum chamber. Double skin sandwich panels are fabricated from inside with 22 gauge stainless steel (SS 304) & outside with 22 gauge imported high polymer coated (pre-painted) galvanized sheet steel (GSS) with protection film on top. The panels are polyurethane foam injected, with PUF density of 45 kg/cub.metre, resulting in high rigidity & sound attenuation characteristics. The detachable panel thickness is 50±3 mm. Entire unit is mounted on 2.0 mm (14 G) galvanized sheet steel channels of 100 mm. height & Aluminium die cast legs with provisions of lifting holes. Other details as per the Technical specifications.

Erection, Testing & Commissioning of Double Skin Floor mounted Air Handling units of Capacity 30 TR - SP 80 mm WG, flow 15000 CMH (Item Sl. No. 3) return air thermostat with control wiring at site as per the Technical specifications

Double Skin Ceiling Mounted Plenum of capacity 40000 CMH: Supply of double skin ceiling mounted plenum. Double skin sandwich panels are fabricated from inside with 22-gauge galvanized sheet steel & outside with 22 gauge imported high polymer coated (pre-painted) galvanized sheet steel with protection film on the top. The panels are polyurethane foam injected with PUF density of 45 kg/cub. metre resulting in high rigidity & sound attenuation characteristics. The panel thickness is 23±1mm. Entire unit is mounted on 2 .0 mm (14 G) GSS channels of 100 mm height & aluminium die cast legs, with provisions of lifting holes and provision for three inlets and two outlet openings with volume control dampers

Erection, testing & commissioning of double skin ceiling mounted plenum of capacity 40000 CMH as given in item Sl no. 5

Supply of following items as a lot along with AHU. •Butterfly valve of size of 80 NB along with suitable mating flanges, bolts and nuts –6 sets. •Magnehelic gauge with nap ----- 1 Nos. •Dial type pressure gauge with coupling and valve arrangement—2 sets. •Dial type thermometer with thermowell— 2 sets. •Electrically operated 3-way mixing valve with suitable flange & bolt/nuts and along with digital thermostat and control wiring--- 1 set. •25 NB ball valve with ½” nipple and dummy plug (provision for de-scaling the cooling coil) –2 sets in each inlet & outlet of Chilled water lines. •Digital water flow meter with settings – 1 set. U –Trap, condensate drain valve and vent valve

Ducting with associated works: Supply of GI ducting of 20 Gauge thickness along with thermal insulation of 19 mm thick Micro cellular closed cell Nitrile rubber insulation of class O grade faced with aluminium foil with required necessary supports (Normal area)

Ducting with associated works: Erection of GI ducting of 20 Gauge thickness as given in item Sl no. 8

Supply of open cell nitrile rubber insulation of 19 mm thick with required necessary supports (Normal area)