Construction of vertical extension i e 5th to 8th floor of National Aerosol Test Facility Building at IIT Kanpur SH Air-conditioning Work

Amount

SUBHEAD 1: VARIABLE REFRIGERANT VOLUME

VARIABLE REFRIGERANT FLOW SYSTEM

Supply, Installation, testing and commisioning of modular type Variable Refrigerant Flow/Variable Refrigerant air cooled Outdoor units suitable for cooling and heating,having all hermetically sealed Inverter Scroll Compressor(s), minimum two compressors for above 14 HP modules, microprocessor based Controller, top discharge type condensing unit (s), with R 410 A Refrigerant, vibration isolators, with suitable foundation and with in built auto phase sequencer etc. complete as required. The unit shall deliver the rated capacity at AHRI Conditions and work even at 50⁰ C ambient temperature without tripping. The unit shall be suitable to work on 415±5%, 3 phase, 50 Hz AC power supply. The unit shall be filled with first charge of the refrigerant and ready for use as required. The COP at AHRI conditions shall not be less than 3.1 and IEER not less than 6.5.

Outdoor Units

36 HP ((18HP+18 HP) or (16HP+20 HP))

INDOOR UNIT DUCTABLE TYPE

Supply, installation, testing and commissioning of following minimum capacity and external static pressure VRF/VRV ceiling mounted ductable type Indoor unit equipped with washable synthetic media pre-filter, fan section with low noise fan/dynamically balanced blower, multispeed motor, coil section with DX copper coil, electronic expansion valve, corded remote control, outer cabinet, vibration isolators, drain pan, other necessary supports etc., suitable for operation on single phase AC supply 230 V ± 10%, 50 Hz or 415 ± 5 %, 3 phase, 50 Hz AC power supply for units aboe 4.6 TR complete as required. The unit shall have automatic force shut down provision in case of fire on receiveing signal from BMS System. The cooling capacity of indoor unit will be at air inlet conditions of 27 Degree C DB and 19 Degree C WB temperature.

Medium Static ductable Unit

Ductable unit : 3.4 TR, 1200 CFM (nominal) min. 38200 btu/hr

Ductable unit : 4.0 TR, 1600 CFM(nominal), min 47800 Btu/hr

Ductable unit : 4.5 TR, 1960 CFM (nominal), min 54600 Btu/hr

INDOOR UNIT CASSETTE TYPE

Supply, installation, testing and commissioning of following minimum capacity 4-way flow VRV/VRF Cassette Type Indoor ceiling mounted unit equipped with synthetic washable media pre-filter, fan section with low noise fan/ dynamically balanced blower, multispeed motor, coil section with DX copper coil, electronic expansion valve, outer cabinet, drain pump, grille, necessary supports, vibration isolation, cordless remote control etc., suitable for operation on single phase 230 ± 10%, 50Hz AC supply, complete,as required. The Unit shall have automatic force shut down provision in case of fire on receiving signal nfrom BMS System. The cooling capacity of indoor unit will be at inlet condition of 27 degree C DB and 19 degree C WB temperature.

4-Way Cassette Unit

4-Way Cassette unit : 1.0 TR or heigher capacity

4-Way Cassette unit : 1.3 TR or heigher capacity

4-Way Cassette unit : 1.6 TR or heigher capacity

4-Way Cassette uni : 2.0 TR or heigher capacity

Controllers

SITC of wall mounted wired/wireless Room Thermostat/Controller as per specification

SITC of following type BMS/IMS Digital central controller with touch screen panel of min 10.1 inch size, including hardware and software compatible to VRF/VRV system by Original equipment manufature (OEM) suitable for min 48 no's circuits, 50 no's ODU's & 200 no's IDU's. The system shall provide communication through LAN & Bacnet. The unit operation on single phase AC supply 230V±10%, 50Hz by which following minimum operations are compulsoraly required 1) Electric power consumption and electricity charge distribution of individiual IDU. 2) Fault/Operation display, Operation history reports in USB or PC in suitable format 3) Web access and annual Operation management, complete as per specification.

Communication cable(1.5 sqmm X 2 Core) in pvc conduit as per specification

Treated Fresh Air Unit (TFA)

Supply, installation, testing and commissioning of following minimum capacity and external static pressure VRF/VRV ceiling mounted Treated fresh air (TFA) ductable type Indoor unit equipped with washable synthetic media pre-filter, fan section with low noise fan/dynamically balanced blower, multi speed motor, coil section with DX copper coil, electronic expansion valve, outer cabinet, vibration isolators, drain pan, other necessary supports etc., suitable for operation on single phase AC supply 230V±10%, 50Hz complete as required. The unit shall have automatic force shut down provision in case of fire on receiving signal from BMS System. The cooling capacity of indoor run it will be at air inlet conditions of 33 Degree C DB and 28 Degree C WB temperature.

TFA Indoor Ductable unit : 6.67 TR (988 cfm)

REFRIGERANT PIPING

Supply, fabrication, installation, testing of Interconnecting refrigerant pipe work with XLPE insulation between each set of indoor & outdoor units as per specifications, all piping inside the room shall be properly supported with MS hanger/tie rod .Refer tender specification for detail description.

6.4 mm O.D (wall Thickness-1.0 mm) (insulation : 19 mm)

9.5 mm O.D (wall Thickness-1.0 mm) (insulation : 19 mm)

12.7 mm O.D (wall Thickness-1.0 mm) (insulation : 19 mm)

15.9 mm O.D (wall Thickness-1.0 mm) (insulation : 19 mm)

19.1 mm O.D (wall Thickness-1.0 mm) (insulation : 19 mm)

22.2 mm O.D (wall Thickness-1.0 mm) (insulation : 19 mm)

25.4 mm O.D (wall Thickness-1.0 mm) (insulation : 19 mm)

28.6 mm O.D (wall Thickness-1.0 mm) (insulation : 19 mm)

31.8 mm O.D (wall Thickness-1.0 mm) (insulation : 19 mm)

34.9 mm O.D (wall Thickness-1.0 mm) (insulation : 19 mm)

38.1 mm O.D (wall Thickness-1.0 mm) (insulation : 19 mm)

41.3 mm O.D (wall Thickness-1.0 mm) (insulation : 19 mm)

Y-JOINTS & HEADERS

Supply, installation, testing & commissioning of following imported OEM fittings to be provided in Supply & return refrigerant pipe line. Material of construction for fittings shall be similar to refrigerant piping.

Y- joints for IDU - IDU refrigerant piping

Y- joints for ODU - ODU refrigerant piping

Top-up additional Refrigerant R-410a charging

Supply, charging, and commissioing of additional R-410a (Du-pont/Honeywell) Refrigerant Gas charging on VRF system complete as required.

MS ODU STAND

Structural steel work riveted, bolted or welded in built up sections, trusses and framed work, including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer all complete.

CABLE TRAY FOR REFRIGERANT PIPING

Supplying and installing of following size of perforated hot dip galvanized G.I cable tray with perforations not more than 17.5%, in convenient sections, joined with connectors, suspended from ceiling with G.I suspenders including bolts and nuts, etc. for carrying refrigerant pipe in outdoor application as required.

450 mm width x 62.5 mm depth x 2 mm thickness

225mm width x 50 mm depth x 1.6 mm thickness

CONDENSATE DRAIN UPVC PIPE

Supply, installation, testing and commissioning of uPVC Pipe, complete with fittings, supports,U trap arrangement,Clean Plug and accessories for IDUs as per specifications, drawings.

32 mm dia (with 6mm Nitrile)

40 mm dia (with 6mm Nitrile)

CHAPTER 2: AIR DISTRIBUTION SYSTEM

GSS DUCT (Factory Fabricated Duct)

Supply, installation,balancing and commissioning of factory fabricated 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 . Refer tender specification for detail description.

GSS DUCT (Site Fabricated Duct)

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 . Refer tender specification for detail description.

Supply Air Grilles

Supplying & fixing of powder coated extruded aluminium Supply Air Grilles with Aluminium volume control dampers of various sizes and as per specifications and approved drawings and schedules.

Return Air Grilles

Supplying & fixing of powder coated extruded aluminium Return Air Grilles with louvers but without volume control dampers of various sizes and as per specifications and approved drawings and schedules.

Volume Control Damper

Supply, installation, testing and commissioning of GI volume control duct damper complete with neoprene rubber gaskets, nuts, bolts, screws linkages, flanges etc, as per specifications.

Motorised Volume Control Damper

Supply, installation, testing and commissioning of motorised(ON/OFF Type) duct mounted G.I volume control damper with enthalpy sensor and necessary control wiring (minimum 1.5 sqmm ) for integeration within IDU room. The unit shall provided as shown in the drawings. The unit shall be capable to communicate with BMS system.

Damper

Actuator

Fresh Air Louvers

Supplying, installation, testing and commissioning of AL. construction fresh air louvers with min. 50 % free area , and painted in baked enamel shade with metallic frame work complete as per specification approved drawings and schedules. Louvers need to be suitable in order avoid rain water entry in to spaces @ 15 degree deflection with bird screen complete as per specification approved drawings and schedules.

flexible duct

Supply, installation, testing & commissioning of thermal insulated flexible duct of following sizes duly supported at regular interval as per site requirement etc. complete as required as per specifications.

Thermal insulated flexible duct (200 mm dia)

CHAPTER 3: INSULATION & ACOUSTIC

DUCT INSULATION

Supply,Installation,Testing and commissioning of Thermal insulation material for Duct insulation.It shall be anti-microbial XLPE type closed cell cross linked polyethylene foam with aluminium foil. Thermal conductivity of the insulation material shall not exceed 0.032 W/moK at an average temperature of 25oC. Density of the material shall be 25-30 Kg/m3. The product shall have temperature range of –40 oC to 105oC. The insulation material shall be fire rated for Class 0 for surface spread of flame test. Water vapour permeability shall not exceed 0.15ng/Pa.Sec.m. Thermal conductivity of the material shall not be affected by ageing, as per DIN 52616. The material must be tested for ageing effect in an accredited laboratory for a minimum period of five years to satisfy the ageing criteria. The smoke density of the material shall not exceed 1. There shall be no toxicity in the emitted smoke, both under flaming and non-flaming conditions. The quoted price shall include adhesive and accessories required to fix the insulation inside the duct.

9 mm on supply/Return duct

13 mm on supply/Return duct

DUCT ACOUSTIC LINING

Supply and fixing of acoustic lining of supply air duct and plenum with 25 mm thick resin bonded glass wool having density of 32 kg/m³, with 25 mm X 25 mm GI section of 1.25 mm thick, at 600 mm centre to centre covered with Reinforced Plastic tissue paper and 0.5 mm thick perforated aluminum sheet fixed to inside surface of ducts with cadmium plated nuts, bolts, stick pins, CPRX compound etc. complete as required and as per specifications.

Acoustic lining of supply air duct and plenum with 25 mm thick resin bonded glass wool having density of 32 kg/m³

UNDERDECK INSULATION (for Exposed Roofs)

Supply,Installation,Testing and commissioning of Thermal insulation material for Underdeck insulation.It shall be chemical bonded anti-microbial closed cell cross linked polyethylene foam (XLPE) .Thermal conductivity of the insulation material shall not exceed 0.032 W/moK at an average temperature of 25oC. Density of the material shall be 25-30 Kg/m3. The product shall have temperature range of –40 oC to 105oC. The insulation material shall be fire rated for Class 0 as per BS 476 Part 7, 1987 for surface spread of flame test. Water vapour permeability as per DIN 52615 shall not exceed 0.15ng/Pa.Sec.m.

Thermal conductivity of the material shall not be affected by ageing, as per DIN 52616. The material must be tested for ageing effect in an accredited laboratory for a minimum period of five years to satisfy the ageing criteria.

The smoke density of the material as per AS-1530.3 shall not exceed 1. There shall be no toxicity in the emitted smoke, both under flaming and non-flaming conditions, as per AITM 3.000 (1993). The quoted price shall include adhesive and accessories required to fix the insulation inside the duct. It shall also be supported with wire mesh in addition to the adhesive.

25 mm XLPE Insulation

DOUBLE LAYER CANVAS CONNECTION

Supply,Installation,testing and commissioning of double Layer canvas connection fire retardant cloth for the end connection of IDUs and Ventilation fan to reduce the vibration.It shall be fire rated for atleast 2 hrs.Refer tender specification for detail description

CHAPTER 4: VENTILATION SYSTEM

FIRE RATED TUBE AXIAL FLOW FANS FOR PLANT ROOM VENTILATION

Supply, installation, testing and commissioning of Fire Rated Tube Axial flow fans complete with tube casing, impeller, bird screen, gravity louvers, necessary nut bolts, Necessary transition piece and canvas connection for proper Installing, silencers on inlet and outlet and directly coupled TEFC Sq.cage, IE-2 efficiency induction motor mounted on vibration isolators suitable for 415V±10%, 50 Hz. 3 phase electric supply complete as per the technical specifications enclosed. The fans should be AMCA certified for air performance & sound ratings. The fan should be rated for a minimum of 250 Deg C for a minimum of 2 Hrs. Application.The fan shall be complete in all respect and should match the specification ,Drawings and Schedule.The quoted price shall consist of mounting arrangemnt along with spring isolator for fan.The unit shall be capacble to communicate with BMS system.

The speed of the motor shall be less than 1450 RPM and the impeller speed shall be less than 1000 RPM and capacities based on minimum static pressure to suit the system.

Note:Noise level shall be 80 db(A) @ 3 meter distance from fan at room condition.

3000 CFM ,Total static pressure of 20 MM WG (Smoke Exhaust Fan)

PROPELLER FANS

Supply , installation , testing and commissioning of propeller type fan with Aluminium/Plastic blade and complete with induction Motor suitable for operation with 230 V single phase 50 Hz with suitable frame etc. as per IS:2312-1967 with gravity dampers for exhaust complete as per specifications and drawings. Noise level should not exceed 45dB(A) @3m.The fan shall be complete in all respect and should match the specification ,Drawings and Schedule.system.

CHAPTER 5: ELECTRICAL

Busbar :

Busbar (1 Set - 4P + E) Busbar made up of electrolytic grade high conductivity aluminium in rectangular cross section and suitable for 415V, FP, 50 Hz, 400 A, 25 kA for 1 sec of required length and cross sectional area.

Outgoing :

MCB 12 Nos. 415V, 50Hz, 63A, 4P, 10 kA MCB. 5Nos. 415V, 50Hz, 40A, 4P, 10 kA MCB.

EARTHING

Supply & Laying of following Tinned copper earth wire/earth strip, GI earth wire/strip fixed on wall/side of trench/slab /column /beam/ shaft, connection to panel/DBs/SFU's etc. with 5mm thick G.I./Cu. Spacers & 2mm thick G.I./ Cu. Saddle including connection/termination with suitable GI/Cu. thimble & nut bolts etc as required to do the job in all respect in accordance with laid specification, drawing or upto the satisfaction of engineer in charge.

25x5 mm G.I. Strip

LT CABLE AND TERMINATION

Supplying, unloading, storing , laying, testing and commissioning of following sizes of 1.1 kV grade XLPE insulated, FRLS (Heavy duty) Copper conductor armoured cables suitable for working voltage upto and including 1100 Volts, laid and tied on existing overhead cable trays; or buried underground or laid and tied over MS supports in masonry trenches including providing MS supports and clamps for fixing to supports in an approved manner, providing fire retardant sealant where required complete as required and as per specifications. Circuit identification tag should be attached with the concerned cable alongwith the test report of following sizes of cable to be submitted by the contractor at the time of delivery of material at site. (Cable length may increse as per existing panel location).

4C X 16 Sqmm 2XWY.

4C X 10 Sqmm 2XWY.

Supplying and making end termination with single compression brass gland and lugs for following size of XPLE insulated and PVC sheathed /XLPE aluminum or copper conductor cable of 1.1 KV grade of the following sizes as required. The cost shall include the cost of crimping and all tools and accessories required to complete the job in full respect. Note : Al lugs shall be used for Al cable and cu lugs shall be used for copper cable.

4C X 16 Sqmm 2XWY.

4C X 10 Sqmm 2XWY.

CHAPTER 6: Comprehensive Annual Maintenance of complete VRF System alongwith controller & its software

Annual comprehensive maintenance contract of capacity as above annexure of complete VRF system which cover's all spares, controlller, hardware, software and consumables requirement to run the VRF system of capacity 176 HP after expiring of 1 year (12 Months) defect liability period.

For 1st year (0-12 Months)

For 2nd year (12-24 Months)

For 3rd year (24-36 Months)

For 4th year (36-48 Months)

For 5th year (48-60 Months)

UNITY ENGINEERS

NAQVI BROTHERS

AIRWAVES ENGINEERS P. LTD.

Tempcon Engineers

The Climate Makers(Sales)

SAHU AGENCIES PVT LTD

Purvi Engineers India Pvt Ltd