PROVN OF PRECISION AIR CONDITIONER FOR MSN LAN AT DSCC AYODHYA NAGAR UNDER GE DRONACHAL

Amount

Supply,commissioning ,testing of DX based MICROPROCESSOR BASED PRECISION A/C UNITS as per the specifications complete with double skin side panels sandwich panels with internal isulation ,Direct Expansion Evaporator Coil with hydrophilic coating, air cooled condenser with stepless variable speed fans for winter operation, Double circuit with One Variable scroll compressor and one fixed type, with internal thermal overload protection, crankcase heater, Electronically commutated brushless motor Backward curved Plug fan evaporator coil with hydrophilic coating. The refrigerant circuit shall comprise of liquid receiver, Thermostatic/Electronic Expansion Valve, copper refrigerant pipe with anti-condensation insulation on suction line. The unit shall have environment friendly refrigerant (R410A), single/ double stage electric heater, variable capacity auto-modulating humidifier (efficiency minimum 0.75kW/Kg/hr),stainless steel drain pan. Liquid Receiver, Pressure Relief Safety Valve, Liquid Line Solenoid Valve and vibration isolator. Motor shall be suitable for 415 + 10% volts, 50 cycles, 3 phase AC supply and external static pressure shall be 25 Pa. Outdoor unit motor protection should be with IP-54 protection and should be weather proof which shall be designed for high ambient operating condition, it should have Fan Speed Controller to modulate the Fan Speed by sensing the Condensing Pressure for Low Ambient Operation. Auto sequencing of the unit for equal run time should be integral part of the micro-processor. Note: Each unit shall have inbuilt sequential controller for operating unit in N+1 confguration. Microprocessor should have inbuilt features of Team Mode and cascade mode incase required including Minor Civil Works as per the site requirment all as specified and directed by Engr-in-charge. (a) Airflow Configuration: Bottom Discharge and top Suction (b) 15TR Actual Cooling capacity (Actual capacity at 22°C ± 1°C, 50% RH Return Air Condition & 43.3°C Outside Ambient Conditions). Unit shall be capable of operation upto 50°C. (c) LOWER SIDE INSTALLATION: Installation, Commisioning and testing of 15 TR Precision AC including lifting shifting positioing, Pressure testing, Vaccuming Refrigerant Charging (R 410A ) Complete as required including Indoor Stand for mounting of Indoor Units-02 nos & Outdoor Stand for mounting of Outdoor Units-04 nos all as specified and directed by Engr-in-charge-02 nos

Supply & installation of Hard Drawn refrigerant Copper piping of size 7/8" and 11/8" ( 19 G) with 13mm Nitrile Rubber insulation to interconnect indoor and outdoor units. Considering 40 RMT / Machine. Charged As per actual all as specified and directed by Engr-in-charge

Supply & Laying, termination, connection of interconnecting electrical armoured cabling for Indoor Units & Outdoor Units of size 2.5 Sq.MM X 3 Core. Considering 20 RMT / Machine. Charged As per actual all as specified and directed by Engr-in-charge

Supply & Installation of PVC insulated 40 mm dia drain piping. Considering 10 RMT / Machine. Charged As per actual all as specified and directed by Engr-in-charge

Supply & Installation of PVC insulated 25 mm dia Humidifier piping. Considering 10 RMT / Machine. Charged As per actual all as specified and directed by Engr-in-charge

Supply & Laying, termination, connection of interconnecting electrical armoured cabling for Indoor Units & Outdoor Units of size 25Sq.MM X 3 Core. Considering 10 RMT / Machine. Charged As per actual all as specified and directed by Engr-in-charge

Supply of Floor Grill with Automodulation Dampers and sensors to control the dampers

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