Tender Specification for Supply, Erection, Testing and ... - IDCO

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DOUBLE SKINNED CASING: The casing shall be self supporting type, factory fabricated and assembled made of extruded anodised aluminum hollow sections to make a rigid frame structure. The frame shall be assembled using pressure die cast aluminum joints. The self supporting unit shall consist of sandwiched panel made out of 0.6mm thick pre-plasticide sheet outside and 0.6mm GI sheet inside duly factory fabricated insulated with 23 mm thick injected PU foam insulation of density of 30 Kg/CMT in between (As specified in Bill of Quantities). The insulated panels shall be bolted to main frame with neoprene rubber gaskets held captive in the framed extrusion to make it leak proof. Suitable air tight access doors / panels with pressure die cast aluminum hinges and nylon handles and locks shall be provided for access to various sections for maintenance. The entire housing shall be mounted on Extruded Aluminum channel frame work having pressure die cast aluminum jointers or the frame work shall be joined together with corner plates. Condensate Drain Pan shall be constructed of 22 gauge Stainless steel sheet with all corners welded with uniform slope from all sides leading to drain pan ensuring no stagnation of condensate water. SINGLE SKINNED CASING: The casing shall be self supporting type, factory fabricated & assembled made of extruded anodised aluminum hollow sections to make a rigid frame structure. The frame shall be assembled using pressure die cast aluminum joints. The self supporting unit shall consist of 18 G pre-plasticide / precoated GI sheet body factory fabricated. The AHU casing shall be insulated with with 23 mm thick injected PU foam insulation of density of 30 Kg/CMT from inside. The casing shall be bolted to main frame with neoprene rubber gaskets held captive in the framed extrusion to make it leak proof. Suitable air tight access doors / panels with pressure die cast aluminum hinges & nylon handles and locks shall be provided for access to various sections for maintenance. The Entire housing shall be mounted on Extruded Aluminum channel frame work having pressure die cast aluminum jointers or the frame work shall be joined together with corner plates Condensate. Drain Pan shall be constructed of 22 gauge polished stainless steel sheet with all corners welded with uniform slope from all sides leading to drain pan ensuring no stagnation of condensate water. Drain Pan shall be insulated with 10 mm thick nitrile foam. MOTOR AND DRIVE: The fan motors shall be 415 ± 10% volts, 50 ± 5 % HZ, 3 phase TEFC SQ. Cage induction motor. The motor shall be specially designed for quiet operation & motor speed shall not exceed 1440 RPM. Drive to fan shall be provided through belt drive arrangement. Belts shall be of the resistant type only. FAN OF DOUBLE/ SINGLE SKINNED AIRHANDLING UNITS: The casing shall have heavy gauge GI construction forward curved DIDW fan statically and dynamically balanced mounted on EN8 solid shaft or C 40 carbon steel. The supply air DIDW fan shall be forward curved. The fan impeller shall be supported to housing with angle iron frame and pillow block heavy duty ball bearing. The fan shall be selected for a fan speed not exceeding 1000 RPM. and fan outlet velocity shall be below 10.2 meter / sec. The fan housing with TEFC Sq. Cage motor shall be mounted on a common adjustable base frame on vibration isolators in case the impeller diameter is exceeding 450 mm and rubber turret mounts vibration isolators for fan diameter up to 450mm diameter. The fan motor shall be installed inside the housing of air handling unit to keep low noise level. The assembly for fan and motor shall be of aluminum extruded section only.
COOLING COILS: The cooling coil shall be made of aluminum fins and copper tubes of dia.12.5mm or 16mm OD. The minimum no. of fins / cm for cooling coils shall be 4.7. The bonding of aluminum fins with copper should be done hydraulically. The tube thickness shall be 24 G and fin thickness shall be 36 G. The cooling coil should be tested for leaks at a hydraulic pressure of at least 21 Kg / sq.cm. for a minimum period of 3 hours at works. The velocity across face should be limited to 152 metre / minute. In case of chilled water coils the design should be such to limit water velocity to maximum of 2.5 m / sec. FILTERS: Each unit shall be provided with a factory assembled filter section containing washable synthetic tube air filters having extruded aluminum frame having filtration capacity of 10 micron particle size with an efficiency of 90%. Filters shall fit so as to prevent by pass. Holding frames shall be provided for installing a number of filter cells in banks. These cells shall be held within the frames by sliding the cells between guiding channels. Face velocity across filters shall not exceed 152 MPM. ACCESSORIES: The following accessories must be provided with each air handlers. a) Auto air vents with globe valve at highest point in the chilled water pipe in all AHU rooms without any additional cost. b) Borden type pressure gauge conforming to IS 3624 with gun metal globe valves shall be provided at the inlet and outlet of coils (as per Schedule of Quantities). c) V form Thermometers with metal guards shall be provided at inlet and outlet of water of cooling coil (as per Schedule of Quantities). d) Balancing valves at coil outlet and butterfly valve and Y-Strainer at coil inlet (as per Schedule of Quantities). TESTING: The testing of AHU shall be done as per the procedure indicated in Specification. FAN COIL UNITS: This section deals with supply, erection and commissioning of fan coil units conforming to general specifications and suitable for duty selected as indicated in Schedule of Equipment. The horizontal type of fan coil units shall be complete with centrifugal blowers of aluminum construction, 3 speed permanent split-capacitor type fan motor, cooling coil, sandwiched insulated drain pan, ball valve sets etc. The outer casing of Fan Coil Unit shall be of 18G cold roll sheet of suitable size to accommodate all piping and controls. The drain pan shall be in double skin construction made of 22G SS sheet duly insulated and of sufficient size to accommodate all controls, valves, copper connection ensuring no stagnation of condensate water. The cooling coil shall be 4 row deep having at least 4.7 fins / cm. The fins configuration of Sigma flow or plain fin shall be acceptable. The OD of copper tube shall be 10 mm minimum and wall thickness of 0.5 mm. The fan shall be centrifugal, forward curved driven by 3 speed permanent split capacitor type fan motor. The Fan Coil Units shall be provided with the following accessories given below.
Page 1 and 2: ISO 9001 & 14001 CORPORATION Tender
Page 3 and 4: ORISSA INDUSTRIAL INFRASTRUCTURE DE
Page 5 and 6: COMMERCIAL TERMS & CONDITIONS The B
Page 7 and 8: GUIDELINES ON BANK GUARANTEE The fo
Page 9 and 10: We, the said Bank, lastly undertake
Page 11 and 12: DEVIATION SHEET : PART - B If the p
Page 13 and 14: INSTRUCTION FOR THE TENDERER Genera
Page 15 and 16: GENERAL TERMS AND CONDITIONS OF CON
Page 17 and 18: In case the tenderer wish to deviat
Page 19 and 20: Negligence: If the contractor negle
Page 21 and 22: i. To have any part thereof complet
Page 23 and 24: Regulation of Local Authorities and
Page 25 and 26: Contract Labour Regulation and Abol
Page 27 and 28: However, the contractor may rectify
Page 29 and 30: INSTRUCTION / MAINTENANCE MANUAL: T
Page 31 and 32: WEEKLY PROGRESS REPORT: A weekly pr
Page 33 and 34: STANDARD SPECIFICATION SCOPE OF WOR
Page 35 and 36: 27. Starter IS 8554 ( Part I) 1979
Page 37 and 38: SCROLL AIRCOOLED CHILLERS: The indi
Page 39: PUMP SETS: This section deals with
Page 43 and 44: a) RESIN BONDED FIBRE GLASS WOOL: T
Page 45 and 46: INSULATION OF PIPES: The chilled wa
Page 47 and 48: A) THE SUPPLY AND RETURN AIR GRILLS
Page 49 and 50: ) Proportionating Thermostat for AH
Page 51 and 52: Appropriate knock-out holes of prop
Page 53 and 54: DRAWINGS: Necessary drawings of all
Page 55 and 56: STANDARD SPECIFICATION ON PIPING WO
Page 57 and 58: LAYOUT AND SIZING OF PIPE LINES: Th
Page 59 and 60: e) Damper actuator shall be such th
Page 61 and 62: Sl. No. 1 Air-conditioned Areas on
Page 63 and 64: 24. Power Cable - ICC / CCI / Glost
Page 65 and 66: Sl. No. Floor and Area Name Area Li
Page 67 and 68: The capacity / rating of various eq
Page 69 and 70: TECHNICAL DATA (TO BE FILLED BY THE
Page 71 and 72: OVERALL SIZE OF WATER CHILLING MACH
Page 73 and 74: PIPE INSULATION: a) Manufactures Na
Page 75 and 76: CHILLED WATER PUMP: a) Flow rate LP
Page 77 and 78: D.6 Each push-button shall have min
Page 79 and 80: K. PAINTING: K.1 All surfaces will
Page 81 and 82: 18. Before delivery, the distributi
Page 83 and 84: BOQ FOR HV AC WORKS OF MCA BUILDING
Page 85 and 86: Sl. No. Description Unit Quantity R
Page 91 and 92:
Sl. No. Description Unit Quantity R
Page 93:
Sl. No. Description Unit Quantity R
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Tender Specification for Supply, Erection, Testing and ... - IDCO

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