Repairing Replacement and Defective of existing carrier make outdoor and indoor units of VRV System and Ductable Cassettes type Split ACs with necessary accessories at Dr BSA Hospital Rohini Delhi

Supplying, Installation, Testing & Commissioning of Modular type Variable Refrigerant Flow/Variable Refrigerant Volume air cooled Outdoor units suitable for cooling/heating having 100% hermetically sealed inverter type twin Rotary/Scroll Compressor(s),minimum two compressors (with individual separate PCB) for above 14HP modules, microprocessor based Controller, top discharge type condensing unit(s), with R-410-A Refrigerant or equivalent, vibration Isolators with suitable foundation etc. complete as required. To have better efficiency condenser fan shall be capable to operate at different speed with respect to load.The unit shall deliver the rated capacity and in confirmation as per IS 18728:2024 and CPWD Specifications and work even at 50°C ambient temperature without tripping. The system shall be able to deliver 100% of the rated capacity upto 39 °C. The unit shall be suitable to work on 400V +/- 10%, 3 Phase, 50Hz AC power supply and BMS compatible. The unit shall be filled with first charge of the refrigerant and ready for use as required. The condenser should be coated with a hydrophilic film to prevent water accumulation on the surface of the heat exchanger, enhance water dispersion, and reduce the risk of degradation, thereby improving overall performance and durability. The Indian Seasonal Energy Efficiency Ratio (ISEER) of the unit shall be as per Energy Conservation and Sustainable Building Code (ECSBC) 2024 as below and complete as per CPWD specification, connections, inter connections etc. as required. (For capacity <40 kWr ISEER 7.4, Capacity > 40 and <70 ISEER 7.5, Capacity > 70 ISEER 7.6 for Super ECSBC Building) For Cooling or Heating or Both (a) 30 HP outdoor unit = 01 No. (b) 20 HP outdoor unit = 02 Nos (Note:- The outdoor unit shall be compatible and fully integrated with the existing VRV system of Carrier make already installed at site.)

Supplying, Installation, testing and commissioning of factory built floor mounted double skin type air handling units made of Extruded Aluminum profile, 25 mm thick panel consisting of Pre coated G.I. casing of thickness 0.8 mm outside layer and Plain GI 0.8mm inside layer with polyurethane foam (PUF) insulation factory injected between them by injection molding machine, complete with blower section with DIDW Backward curved Plug Fan suitable for static pressure of 50 mmwg, 6 row deep DX coil with aluminum finned 0.12mm and copper tubes(tube thickness not less than 0.5mm), filter sections with 50 mm thick washable synthetic type air pre- filters having efficiency 90% down to 10 micron , Provision of fine filter , TEFC squirrel cage induction motor of IE-2 efficiency suitable for 415 ± 10% volts suitable for VFD operation, 50Hz, 3 Phase AC supply. AHU shall be AHRI/Eurovent certified, Complete as per CPWD specification/drawings and as directed by Engineer-in-Charge.

4800 CFM Supply air with 50mmwg static pressure

3600 CFM Supply air with 50mmwg static pressure

Supplying, Installation, testing and commissioning including vaccumiazation and Nitrogen testing of following nominal sizes of soft/hard drawn copper refrigerant piping for VRV/VRF system, complete with fittings, with suitable adjustable ring type hanger supports, jointing/brazing including accessories, insulated with XPLE Class-O tubular insulation/with Class-O closed cell elastometric nitrile rubber tubular sleeves sections of 19 mm thick insulation as given below for Suction and Liquid lines, all accessories as per specifications etc. as required :

9.5 mm dia (OD) (Soft drawn) with tube thickness 1.2 mm

12.7 mm dia (OD) (Soft drawn) with tube thickness 1.2 mm

15.86 mm dia (OD) (Soft drawn) with tube thickness 1.2 mm

22.2 mm dia (OD) (Hard drawn) with tube thickness 1.2 mm

Supplying, Installation, Testing and Commissioning of Y/T/ Multi Joints. Joints shall be of same Original Equipment Manufacturer (OEM) make as of ODUs and IDUs

Indoor Units

Outdoor Multi Joint

Supplying & Charging of R-410A refrigerant gas in existing of various capacity VRV/VRF type unit i/c replacement of capillary tube & strainer, leakage detection, nitrogen testing, vaccumising testing, pressure hold and gas charging etc. complete as reqd. at site.

ANTICORROSION COATING TREATMENT FOR SULPHUR INHIBITED AREAS ODU UNITS - All copper joints, U-bends and brazing joints inside the condenser unit shall be sealed with (Base coat – Epoxy coating) with thickness of 60-80 microns followed by (top coat- Polysiloxane/polyurethane based coating) with thickness of 40-50 microns on sealed joints as well as entire exposed copper piping within the condenser unit. All aluminium fins to be coated with Polysiloxane/polyurethane based coating with thickness of 10-15 microns (for coastal areas) to offer an inhibiting as well as sacrificial protection of metals against corrosion, Sulphur and other Chemical contaminants present in air. Third party certificated from NABL accredited laboratory must be produced for salt-spay test for minimum 3000 hours for each coating as per ASTM –B117. Coating should be done in presence of OEM representative.

SITC of main intelligent central controller with necessary hardware, software and interface required for controlling of AHU's system suitable to control complete VRV / VRF equipments to control individually, monitor, On / Off, temperature setting etc complete as reqd. (Note:- The central controller shall be compatible and fully integrated with the existing VRV system of Carrier make already installed at site.)

Supplying, Installation, Testing and Commissioning of air cooled ducted split type air conditioning machine with each having a capacity and details as mentioned below suitable for operation on R 32/R-410A /R-407 Green refrigerant comprising of Scroll type compressor hermatically sealed complete with automatic capacity, safety switches, lubrication system with min 5 year (OEM) warranty for both compressor and Printed Circuit Board (PCB) , Suitable capacity squirrel cage induction motor having class 'B' insulation suitable for operation on 415 + 10% volts, 50 Hz, A.C. supply for Blower motor, Necessary drive arrangement for blower motor, Matching Air cooled condenser with necessary fittings for refrigerant piping connections, necessary structural support for mounting condensers, Microprocessor based control panel complete with accessories, machine Isolation / disconnect switch, valves and accessories to inter connect compressor and condenser including pressure testing, vacuum. Necessary starters suitable for Indoor & outdoor unit complete with O/L ,U/V, phase reversal protection, single phase preventors i/c copper conductor control and power cable and drain pipe of suitable size and length etc complete as required. The total cooling capacity/heating capacity of tested unit shall have a capacity as per relevant IS code. The lab testing reports as per IS: 8148 shall be submitted from National Accreditation Board for Testing and Calibration Laboratories (NABL) accredited as per ISO/International Electrotechnical Commission (IEC) 17025 standards / Central Power Research Institute (CPRI)/Electrical Research and Development Association (ERDA)with Original Equipment Manufacturer (OEM) etc. complete as per CPWD specification as required. (Non Inverter)

4.0 TR (3.2 EER)

5.5 TR (3.2 EER)

Supplying, Installation, Testing and Commissioning of Air Cooled Cassette type Air conditioners complete with Indoor unit(IDU), Out door unit (ODU), R-32/R410A/R-407 Green Refrigerant, wireless Remote, inbuilt drain pump, suitable for 400/230V, 50 Hz ,1 /3 phase AC supply, including surface / concealed copper Refrigerant piping with insulation (closed cell elastomeric nitrile rubber tubular pipe section) upto 5.5 Mtr (IDU to ODU), copper power and control cable upto 5.5 Mtr (IDU to ODU) including drain pipe, the system shall be capable of performing cooling, dehumidification, Air circulation, filteration & ventilation of following capacity with Scroll/rotary compressor with min 5 year Original Equipment Manufacturer (OEM) warranty both compressor and Printed Circuit Board (PCB) as specified. The system shall be able to deliver 100% of the rated capacity as per relevant IS Code. The lab testing reports as per IS: 1391 shall be submitted from National Accreditation Board for Testing and Calibration Laboratories (NABL) accredited as per International Electrotechnical Commission (IEC) 17025 standards/ Central Power Research Institute (CPRI)/ Electrical Research and Development Association (ERDA)with Original Equipment Manufacturer (OEM) etc. complete as per CPWD specification and as per IS: 1391 as required.

4.0 TR with 5 Star BEE Rating

Supplying, 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, bends, transitions, reducers, end caps, collars etc as required complete in all respect in confirmation with IS : 655 and approved drawings and specifications of following sheet thickness complete as required.

Thickness 0.63 mm sheet

SITC of Canvas connection of the followings sizes of Air handling Unit & fixing the canvas Connection with existing ducting dually fabricated with GI frame with necessary nut bolt gasket etc complete as reqd at site.

1050mm x 325mm x 300mm

Supplying, Laying and Fixing of following sizes of XLPE insulated and PVC sheathed copper conductor unarmoured power cable of 1.1 KV grade on surface/ cable tray etc. as reqd.

6 x 2.5 Sq. mm

P/F of CPVC pipe of following size along with all accessories for draining of condensate to a safer disposal point in recess / surface i/c the cutting the chase in the wall and making good the same with cement work etc complete as reqd.

32 mm dia

Dismentalling the old existing VRV / VRF system, AHU and 4 TR/ 5 TR Ductable/Cassette Split units i/c safely dismentalling of other allied equipment i/c less credit for dismantled material etc complete as reqd.

VRV / VRF outdoor units

AHU 4800 CFM & 3600 CFM

4 TR/ 5 TR Ductable/Cassette Split units