Provision of FCUs and allied chilled water lines to FF of Administrative Building in IIT Madras

Amount

EQUIPMENT

LOW HEIGHT DESIGN FAN COIL UNITS - COMPACT AND SERVICE FRIENDLY CHILLED WATER TERMINALS FOR SILENT OPERATION

Supply and fixing of Double skin fan coil unit made out of 18mm thick double skin insulated deachable panels with 0.6mm pre-plasticised exterior sheet and 0.6mm galvanized internal sheet. This unit will be made out of 18mm extruded aluminium profile filled with PUF and nylon corner joints. Stainless steel L type drain pan is provided within the unit to accommodate the ball valves and 2 way valves(on/off) type with inlet and outlet connection ends at the exterior of the panel. DIDW imported fans mounted with 3 speed single phase motors. The cooling coil is of 3/8" OD 3 row deep with suitable inlet and outlet ball valves, 2 way control valves with electronic digital thermostat. The unit will be provided with access panels for operating the ball valves and removal of fan with motor.

2TR FCU

1.5 TR FCU

VENTILATION SYSTEM -FRESH AIR & EXHAUST

Circular / Rectangular Inline fans with 15mm SP of following capacity

Chilled Water Piping

Supplying, laying/ fixing, testing and commissioning of following nominal sizes of chilled water piping inside the building (with necessary clamps, vibration isolators and fittings but excluding valves, strainers, gauges etc.) duly insulated with following closed cell elastometric nitrile rubber of minimum 45 Kg / cu m density, thermal conductivity 0.037 W/MK or better at 20 deg mean temperature class 'O' insulation applied by suitable adhesive complete including repairing of damage to building etc. as per specifications and as required complete in all respect.

Note:- The Pipes of sizes 150mm & below shall be M.S. 'C' class as per IS : 1239 and pipes size above 150mm shall be welded black steel pipe heavy class as per IS: 3589, from minimum 6.35mm thick M.S. Sheet for pipes upto 350 mm dia. and from minimum 7mm thick MS sheet for pipes of 400 mm dia and above.

150mm dia

50mm dia

25mm dia

Pre insulated Chilled Water Piping

Supplying, laying/ fixing, testing and commissioning of following nominal sizes of Pre insulated chilled water piping in the excavated trench with necessary supports to mount the pre insulated pipes on the RCC block of adequate numbers, size and height, vibration isolators and fittings but excluding valves, strainers, gauges, earth work excavation etc. duly factory pre insulated with 50mm thick Polyurethene foam minimum 36 Kg / cu m density, required accessories, field joint components,outer covering with HDPE jackets etc as per specifications and as required complete in all respect. The charges inclusive of dewelding the existing pipes on header side in the plant room and tap off points of the AHUs on other sides.

Note:- The Pipes of sizes 150mm & below shall be M.S. 'C' class as per IS : 1239 and pipes size above 150mm shall be welded black steel pipe heavy class as per IS: 3589, from minimum 6.35mm thick M.S. Sheet for pipes upto 350 mm dia. and from minimum 7mm thick MS sheet for pipes of 400 mm dia and above.

150mm dia

Condensate Drain Piping

UPVC piping complete with U-Trap for the AHUs,fittings & accessories as per specification and as required.

25 mm dia

50 mm dia

BALANCING VALVE WITH BUILT IN MEASURING FACILITY with C I body flanged construction with EPDM coated disc with long pitch with protected out pipe insulation & PN 16 pressure rating for chilled / hot water circulation as specified.

150 mm dia

Supply, installation, testing and commissioning of following sizes Ball valves duly insulated along with Fittings & accessories

32 mm dia

25 mm dia

Supply and fixing of Automatic Purge valve made of brass, float type, complete with shut off valve

15 mm dia

Ducting, Insulation & Grills

Rectangular GI Ducting

Supply, installation of factory fabricated completely finished and boxed ducts (including the duct flange). All sheet shall be Class VIII – light coating of zinc, nominal 120 gsm / sqmt surface area including two sides and Lock Forming Quality prime material along with mill test certificates. TDF type flanges with rubber gaskets of thickness to match the dimensions of the ducts shall be used for connecting two ducts complete with necessary Hitech supports. The duct sealing requirement shall be of class 'B' to ensure the duct leakage shall not to exceed as per SMACNA leakage class 12. The Duct to be manufactured and tested as per SMACNA standard for Class-500 pascals.

Thickness 1.00 mm Ducting

Grills, Diffusers and Louvers

Supply,installation,testing & commissioning of Powder coated extruded Aluminium Supply air grille with aluminium volume control dampers as per specification

Supplying & fixing of Fresh air intake louvers bird screen type with prefilter and aluminium wire mesh (Aluminium extruded only) as per specification and sizes will be as per shop drawing.

Supplying & fixing of door transfer grills for toilets as required

Earth work excavation

Excavation for cable trenches in soft soil, depth upto 1.2 m including dressing of sides lift upto 1.5 m, including getting out the excavated soil, refilling with sand and or good soil after laying of cable/ pipe etc in layers of 20 cm, ramming, watering and disposal of surplus excavated soil as directed, within a lead of 50 metres.

Excavation of the cable trenches in hard rock not exceeding 1.5 metres in width, and lift upto 1.5 metres, including getting out the excavated soil and disposal of excavated soil as directed within a lead of 50 metres.

GEMINI COOLING SYSTEMS PROJECTS PRIVATE LIMITED

Airtech India

SNOWMEX ENGINEERS LIMITED