Miscellaneous Air-conditioning works at Rajiv Gandhi Bhawan. SH Augumentation of HVAC system at Rajiv Gandhi Bhawan, New Delhi

Amount

Design fabrication, supply Installation Testing commissioning of factory built floor mounted chilled water double skin type horizontal Air Handling Units (AHU) made of minimum 43 mm thick panels, consisting pre plasticised G.I casing of thickness 0.8mm outside layer and 0.8mm inside layer with polyurethene foam(PUF) insulation factory injected between them by injection moulding machine having 38 kg/cu.M density, complete with blower section with Airfoil Backward curve Plug Fan blower suitable for total static pressure of minimum 65 mmwg, minimum 2 bend GSS/ PVC drift eliminators, chilled water cooling coil section with aluminium finned copper tubes (tubes thickness not less than 0.5mm) cooling coil of 4 row deep, filter sections with 50mm thick metal viscous /washable synthetic type air pre-filters, UVGI system comprising of UV lamp, Ballast & control panel to cover entire coil with minimum avg intensity as per ISHRAE, suitable for 230 ± 10% volts, single phase AC supply and casing provision as recommended by ESP OEM to fix existing Electrostatic precipitation based ESP filters and Carbon filters, direct drive package with Totally Enclosed, Fan-Cooled (TEFC) drive motor of efficiency class IE3 suitable for 415 ± 10% volts, 50Hz, 3 phase, AC Supply, suitably designed for variable frequency drive applications, drain connections, stainless steel (18G) drain pan with PUF insulation, 150 mm dia. dial type pressure gauges (2 nos.)and industrial type thermometers (2 nos.) at the inlet and outlet of coil, auto purge valve wherever required, necessary vibration isolation arrangement etc., Complete for the site suitability as per specification and of following capacities: Note: 1. Agency is responsible to check the site for space constraints for replacement & offer the new AHU unit with specification as per SOQ, SCC & site suitablity etc. 2. Agency will do the necessary removal of pre-fillter, ESP and UV system alongwith frame from old AHU unit & ITC of the same in the new AHU unit without any damage to AHU & filter, without any extra charge. 3. Any changes in the increase in the frame size of the new AHU unit have to be planned in advance during manufacturing which will include the new ESP & corbon filters alongwith drivers (as per Item no. 2) to merge with the existing system.

SITC of additional Central air cleaner purification system that improves the indoor air quality, reducing harmful pollutants like particulate matter (PMx), PM 2.5 allegenns, pollen, smoke, bacteri, pathogens based on electrostatic precipitation, to fit along with existing EAC filters system/ compatible with OEM specifications as required. This item also includes activated carbon filtter with good quality aluminium frame for removal of TVOCs and CO and necessary drivers, control wiring & minor works required to fix the above installations/ filters in the AHU units. OEM comitability go-head is must for execution / SITC of these filters requirement. Make Honeywell or equivalent with compatibility confirmation from the existing system OEM.

Filters of size 610X350X171 mm -1000CFM (Honeywell, Model No. F58H1006 )

Filters of size 610X670X171 mm -2000CFM (Honeywell, Model No. F58G1016)

Supply, installation, balancing and commissioning of site fabricated GSS sheet metal rectangular/ round ducting as per IS 655-2006 of 1.25 mm thickness complete with neoprene rubber gaskets (fire retardant), elbows, splitter dampers, vanes, hangers, supports etc. as per approved drawings and specifications complete for Modification of Plenum/ Duct according to New AHU's or required as per site requirement.

Supplying, laying/ fixing, testing and commissioning of following nominal sizes of M.S. ‘C’ class chilled/ Condenser water piping (Pipe as per IS : 1239) 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 rubber based adhesive complete including repairing of damage to building occured during fixing of pipes etc. as per specifications and as required complete in all respect as required at site.

80 mm dia with 32mm thick nitrile rubber insulation

50 mm dia with 32mm thick nitrile rubber insulation

32 mm dia with 19mm thick nitrile rubber insulation

SITC of canvas cloth (Fire Retardant Duct Flexible Connectors) complete with fittings, flanges, supports, all accessories as per specifications and any other item required to make the system complete for supply air in AHU units complete as per site requirement.

Dismantling and Shifting of old AHU upto 15000 CFM capacity from existing location to AAI Store as per space suggested with in 1 Km range etc complete as required

Replacement of old drive with new Master Controller variable frequency drive (VFD) of minimum IP20 rating, 15KW, 415 V, C3 Filter application for secondary Pump of AC plant in existing electric panels complete as required (Xylem of model IPC 102 + MCO301 or equivalent from the preperred make list). The Item include the dismantle of old drive & shifting to AAI store & SITC of new drive alongwith any coding/ data feeding required to run the drive/ installations as per OEM/ indutry standards & site requirement.

Replacement of old drive with new variable frequency drive (VFD) of IP20, 15KW, 415 V, C3 Filter application for motors of AC plant in existing electric panels complete as required (Xylem of model IPC 102 or equivalent from the preperred make list). The Item include the dismantle of old drive & shifting to AAI store & SITC of new drive alongwith any coding/ data feeding required to run the drive/ installations as per OEM/ indutry standards & site requirement.

Replacement of old pot strainer with new Pot Strainer of PN16 pressure rating madeup of Mild steel IS2062, top flange openable, with replaceble filter elements without disconnecting the pipeline, complete with stainless steel SS-304 filter wiremesh basket, flanged and connection in condensed water pipes of 200mm dia inlet & outlet with black rubber gasket etc. along with dismantling of existing old pot stainer complete as required at site & Shifting to AAI store. (The strainer should be suitable for installation with existing Advance make cooling tower for a capacity upto 300TR) This item also include the dismantle of old pot strainer and ITC of the new i/c any welding, not bolts, reducers etc. as per site requirement complete in all respect.

SITC of Duct Type Temperature and Humidity Sensor with 0-10 V DC output. Temp range 0-50 DegC with accuracy of ±0.3°C @ 25°C and RH range 0-100% with ±2% between 0...80% RH in IP 65, NEMA 4X weatherproof housing. Operating voltage AC/DC 24 V, compatible with existing BMS system (EBI/ WEB-S-1-N4 from honey well as per site requirement) complete as required.

SITC of Duct Type Temperature Sensor with 0-10 V DC output. Temp range 0-50 DegC with accuracy of ±0.3°C in IP 65, NEMA 4X weatherproof housing. Operating voltage AC/DC 24 V, compatible with existing BMS system (EBI/ WEB-S-1-N4 from honey well as per site requirement) complete as required.

SITC Immersion Temperature Sensor with PT1000 ohms output. Temp range -50...160°C with accuracy of Class B, ±0.3°C @ 0°C in IP 65, NEMA 4X weatherproof housing. Stem Length as per site requirement. along with a brass thermowell, compatible with existing BMS system (EBI/ WEB-S-1-N4 from honey well as per site requirement) complete as required. (any socket welding and fitting of the thermowell in line to be considered in scope of work)

SITC of Air Differential Pressure switch of range 20-300 pascals with repeated accuracy ±5%, min. ±5 Pa , SPDT contact with Contact current max. 1.0 A (0.4) / AC 250 Vwith IP54 housing, along with PVC tube 2 m , 2 x Duct connectors (plastic) & screws, compatible with existing BMS system (EBI/ WEB-S-1-N4 from honey well as per site requirement) complete as required.

SITC of Water Flow switch to sense water flow in chilled water line. IP 65 (any socket welding and fitting of the thermowell in line to be considered in scope of work), compatible with existing BMS system (EBI/ WEB-S-1-N4 from honey well as per site requirement) complete as required.

SITC of Outside Air Temperature and Humidity Sensor with 0-10 V DC output. Temp range 0-50 DegC with accuracy of ±0.3°C @ 25°C and RH range 0-100% with ±2% between 0...80% RH in IP 65, NEMA 4X weatherproof housing. Operating voltage AC/DC 24 V, compatible with existing BMS system (EBI/ WEB-S-1-N4 from honey well as per site requirement) complete as required.

SITC of Current Relay to measure pumps, fan run status . Minimum 1 Amps to max 20 Amps, compatible with existing BMS system (EBI/ WEB-S-1-N4 from honey well as per site requirement) complete as required.

SITC of Level switch with float for cooling tower sump level, IP67 housing, compatible with existing BMS system (EBI/ WEB-S-1-N4 from honey well as per site requirement) complete as required.

Supply and laying of 2 core x 1.0 sq. mm sheilded and armoured cable for BMS sensor works on wall surface/ cable tray/ raceway/ through wall (i/c making hole) complete as required.

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