Construction of MSSR Katihar SH - SITC of Precision type Air-conditioning including AICMC for 5 Years (after 2 years DLP).

PART-A Precision Type Airconditioner Works Supply of 9 TR Floor Mounted, Bottom discharge, Top suction, Air Cooled DX type units for Equipments room application suitable to maintain equipment room temperature at 20°C ± 1°C for precise control of Equipment room,suitable for 415 Volts, 50 Hz, 3 Phase Power Supply. The Indoor unit shall comprise of Variable capacity Scroll/Digital Scroll/BLDC Variable speed Compressor, Fiberglass corrosion resistant EC fans, Evaporator DX Cooling Coil with hydrophilic coating, Microprocessor controllers, Elecrtonic Expansion valves, Driers, EU4/G4 Filter, Suction and Discharge piping, Internal power and Control wiring, Crank case heaters, infrared/electro type Humidifier, HP/LP Cutouts, Power and Control contactors, water leak detectors and Other Electrical accessories. Outdoor unit motor protection should be with IP-54 protection and should be weather proof, it should have Fan Speed Controller to modulate the Fan Speed by sensing the Condensing Pressure for Low Ambient Operation. Each unit shall be BMS compatible and shall have inbuilt software to faciliate BMS connectivity through RS485 Modbus Protocol and Ethernet with Modbus Protocol and HTTP Protocol. Each unit shal have individual display panel, which shall display date, time, actual & set values, operating conditions, signal faults, collective faults, limiting values, PAC wellness alarm/service alarm to reduce the down time and unit memroy shall be hold 100 to 400 most recent events with ID Number,time and date stamp for each eventetc. as per the specifications considered excluding initial gas charge.The unit shall be able to operate up to ambient of 48 deg C. Each Unit shall have an inbuilt Virtual/ Motorized damper with the unit to avoid short cycling of standby units. The Outdoor Condenser unit shall have IP 54 protection and shall comprise of Condenser fans & motor, Condenser cooling coil (Copper coil with anti corrosive aluminum fins), automatic Fan speed controller, Isolator switch.Complete as per OEMs specifications.

Installation, testing and commisiooning of Floor Mounted, Bottom discharge, Air Cooled DX type CRAC units (Indoor & Outdoor) for Equipment room application, Pressure testing, Vacumzing, charging, communication cabling, integration, interfacing, sequential operation, testing Commissioning of the system by OEM engineer, including supply and fixing of suitable MS stand for Indoor and Outdoor units as per OEM, charge of R-410A refrigerant gas, including grouting the M.S frame's or anchor fastener with drilling holes complete as required and minor civil work complete as per site requirement.

Supply & fixing of 18 gauge Hard Drawn Copper Pipe Refrigerant piping suitable size as per OEM (Liquid line) duly complete with all insulation , supports, clamps, fittings, connections, sleevs etc fittings and finished with two coated of enamel paint of approved colour code including suitable thickness (minimum thickness 19mm) of closed cell elastromeric insulation having Class 'O' fire retardent properties for piping the air conditioned space.

Supply & fixing of 18 gauge Hard Drawn Copper Pipe Refrigerant piping suitable size as per OEM (Discharge line) duly complete with all insulation, supports, clamps, fittings, connections, sleevs etc fittings and finished with two coated of enamel paint of approved colour code including suitable thickness (minimum thickness 19mm) of closed cell elastromeric insulation having Class 'O' fire retardent properties for piping the air conditioned space.

Supply and fixing of 25 mm dia CPVC Pipe for humidifier inlet. Complete with fittings supports, valves,bends,reducers,elbows,tees,union,flanges etc 9 mm thick nitrile rubber insulation as required.

Supply and fixing of 40 mm dia CPVC Pipe for drain pipe. Complete with fittings supports, valves,bends,reducers,elbows,tees union,flanges etc 6 mm thick nitrile rubber insulation as required.

Supply and fixing of CPVC ball valve 25NB complete as required as per site condition.

Supply and fixing of CPVC ball as per site condition valve 40NB complete as required

Supply and Fixing of thermal insulation with 19mm thickness thermal insulation of floor of Server Room & walls below false floor and roof exposed to sun using closed cell nitrile rubber elastomeric insulation with class 'O' fire retardant

Supplying & fixing of Floor grills which shall be fitted in floor tile of false floor with volume control dampers (600mmX600mm) complete as required.

Supplying & fixing of powder coated extruded aluminium Return Air Grills with louvers but without volume control dampers (600mmX600mm) complete as required.

Refrigerant R410A Supply & Charging & Leakage testing of refrigerant - 410a in PAC system.

Supply and Installation of Return Air Plenum of suitable height to provide air tight connection between PAC and the false ceiling. Plenum should be factory fabricated double skin insulated from inside.

Supply and drawing of 3 Core 2.5 sqmm PVC insulated PVC sheathed copper conductor armoured UG cable in existing pipe/conduit/HDPE including cable end termination etc complete as per required.

Supply and drawing of 4 Core x 10 sqmm Cu Armoured cable / PVC sheathed copper conductor armoured UG cable in existing pipe/conduit/HDPE including cable gland, end termination etc as per required.

Supply and laying of 1c x 10 sqmm FLEXIBLE Copper cable (for Earthing ) in existing pipe/conduit/HDPE as per required.

Supplying and installing following size of perforated Hot Dipped Galvanised Iron cable tray (Galvanisation thickness not less than 50 microns) with perforation not more than 17.5%, in convenient sections, joined with connectors, suspended from the ceiling with G.I. suspenders including G.I. bolts & nuts, etc. as required.

300 mm width X 50 mm depth X 1.6 mm thickness

Lifting/lowering & shifting of ODUs & IDUs as per site requirement.

Supplying and fixing of 25 mm size of Steel conduit along with accessories in surface/recess including painting in case of surface conduit, or cutting the wall and making good the same in case of recessed conduit as required.

PART-B AICMC of PAC Units All Inclusive Comprehensive Maintenance Conrtract (AICMC) of above 3 Nos of PAC system for 5 years (after defect liability period of 2 years) as per the direction of EIC complete as required.

Year - 1 (3.52 % of SITC cost i.e. total for Sl. No:01 to 19)

Year - 2 (5.80 % cumulative enhancement on Year - 1 AICMC cost)

Year - 3 (6.00 % cumulative enhancement on Year - 2 AICMC cost)

Year - 4 (6.00 % cumulative enhancement on Year - 3 AICMC cost)

Year - 5 (6.00 % cumulative enhancement on Year - 4 AICMC cost)

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