National Institute Of Plant Genome Research Tender

COP of system 3.7 at 100% load & 7.50 at 50% at AHRI condition.The unit shall also have feature to automatically modulate the evaporative temperature between 6 deg C to 10 deg C with respect to load for better comfort and energy efficiency.

Operating range Outdoor Unit shall be capable of maintaining continuous compressor operation under all of the following operating ambient air conditions. a) Operating ambient air conditions - Cooling: -5°C DB to 53°C DB

No derating of cooling capacity at 39 deg C ambient

Inverter PCB cooling: Cooling of the inverter PCB shall be conducted by way of high pressure, sub-cooled liquid refrigerant via heat exchanger attached to rear side of inverter PCB. The full capacity flow of refrigerant shall pass through the heat exchangers to maximize the cooling effect of the PCBs and to aid in the evaporation process and capacity of the outdoor coil during the heating mode. The recovered heat of the PCBs must be used to enhance the overall heating process, other uses or dissipation of heat to ambient shall not be permitted.

32 TR / 40 HP ( 20 HP X 2 Circuit )

Dismantle of existing AHU along with all accessories and fittings. Supply and fixing of new 30 TR double skinned AHU in the present AHU room, complete as under:

Filter section with filters., Backward curved blower with motor and starter, Direct Expansion coil 6 row, Expansion valve and other controls, Masonry pedestal, Room thermostat with wiring, Fresh Air Cowl with Damper, Outlet dampers, Outlet flexible connections -

Supply, installation, testing and commissioning of factory fabricated Double Skinned Chilled Water Air- handling Floor Mounted type, fabricated out of extruded aluminium section with 0.6mm pre-plasticized I pre-coated Galvanised steel sheet outside & 0.6 mm plain Galvanised steel sheet inside with backward curved blower , blower section and blower motor TEFC type IE 3 grade suitable for VFD operation on 415 volts ± 10%,50 Hz ± 5% AC supply, 4/6 Row cooling coil made of Aluminium finned Copper tube with coil section of copper header and MS adaptor,pre-filter section with non woven synthetic media in extruded aluminium frame of 10 micron particle size with an efficiency of 90% of suitable MERV 8 rating,ESP Filters as specified below,polished stainless steel drain pan made out of 20 G sheet duly insulated complete with motor,belt drive etc.Drain pan insulation shall be minimum 19mm closed cell nitrile.The AHU panels shall be insulated with 48 mm thick & 48 Kg/m3 density PUfoam. The maximum permissible sound pressure level of the AHU sall not exceed 50-60 dbA measured at 1.5 m from AHU surface for the recommended range of operation.The motor & blower assembly shall be mounted on Aluminium extruded section only. The complete AHU shall conform to standard specification. The face velocity across coil shall be limited to 500 FPM maxm.The capacity of Air-handlers shall be as follows. Mixing box with aluminium volume control dampers for fresh air complete as per specifications and drawings.

12,000 CFM Floor Mounted AHU,(6 Row Deep CHW Cooling Coil & 4 Row Deep DX Cooling Coil for VRV With 2 Nos. Expension Kit , 70 mm St Pr,Suitable K.W. Fan Motor IE-3 Rating, Pre Filter MERV 8, ESP Filter & VFD- Wall Mounted type

MS 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 with factory fitted fibreglass GC cloth in blue color 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

All pipes on floor to be supported/hanged on wire rope hangers system as per specifications with lock(s) and pre‐crimped end fixing(s) except risers.

80 mm dia. (32 mm thick insulation)

Supply and laying of Insulated drain piping of 25mm dia GI pipe B Class with 9 mm thick Elestomeric nitrile ruber insulation Class O , complete with supports etc to the nearest drain point:

INSULATED VALVES

Supplying, fixing, testing and commissioning of valves, strainers, gauges in the chilled water duly insulated to the same specifications as the connected piping and adequately supported completely as per specifications.All valves to be insulated at site only.

BUTTERFLY VALVE (MANUAL) with C I body SS Disc, Nitrile Rubber Seal & O- Ring PN 16 pressure rating for chilled water/ hot water circulation as specified complete with all accessories to make system functional

80mm dia.

Y - Strainer of Ductile CI Body flanged ends with stainless steel strainer for chilled water circulation including insulation as specified complete with all accessories to make system functional .

80mm dia.

Providing and Fixing 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 complete with all accessories to make system functional .

80mm dia.

Providing and fixing of in position the industrial type pressure gauges with gun metal / brass valves complete as required complete with all accessories to make system functional.

Providing and fixing of in position the mercury in glass industrial type thermometers complete with all accessories to make system functional .

Supply, installation ,testing and commissioning of Auto Air vents,at the highest points in the chilled water & condenser piping, FM AHU coil as per approved makes and specifications.25 mm Dia Auto Air Vents, with isolating ball valves complete with all accessories to make system functional .

Supply, installation ,testing and commissioning of Motorized valve along with actuator in the chilled water piping complete with all accessories to make system functional of similar sizes.

Copper piping

Supply, Installation, Testing & Commissioning of high pressure copper refrigerant piping suitable for R 410a refrigerant of suitable size as required and duly insulated with 19mm thick closed cell elastomeric insulation in tubing form. External Refrigerant piping shall be laid on GI covered cable trays. Piping inside occupied spaces shall be supported using MS hangers duly painted with black enamel paint. Entire refrigerant piping work is carried out in accordance with the specifications. Piping shall be of following sizes :

28.6 mm with 1.0 mm thickness

15.9 mm with 0.99 mm Thickness

Electrical Cable

4C X 16 Sqmm Copper Armoured cable for ODU with gland , thimble and earthing

Control Cable

Providing and fixing of Sheilded controle cable with PVC Conduit and earthing wire , size - 3c x 1 sqmm complete to make system functional

Supply Intsllation, Testing and commissioning of Electrical DB box comprising of 100 amp incomer and 2 no 63 amp mcb outgoing to the outdoor units along with necessary accessories such as gland, thimble cable etc. to make system functional.

Buy Back of dismantled Old AHU of 12000 cfm (30 TR Approx)

Consultant Engineer