SPECIAL REPAIR / REPLACEMENT OF BER DECLARED AIR CONDITIONING SYSTEM WITH VRF SYSTEM AT AUDITORIUM, NSB-I CHANAKYA

Amount

Dismantling wall and ceiling boards (fibre, pulp, insulation etc) or insulation boards/slabs/blankets, any thickness with cover fillets including MS frame work.

S&F for GI frame work for decoraive type seamless ceiling comprising of GI perimeter channel 0.55mm thick with two unequal flanges of 20 and 30mm and web of 27mm fixed to surrounding wall using nylon sleeves and screws at 450mm centre to centre/ intermediate channel 0.9mm thick having two equal flanges of 15mm each and web of 45mm suspeneded from soffit at approx 900mm center to centre with GI cleat and steel expansion fasteners with and including ceiling section (not exc 1.2m length) of 0.55mm thickness having kurled web of 50mm and flange of 26mm each with lips of 10.5mm fixed to the intermediate channel with connecting clips across the intermediate channel at 457mm center to centre including providing and fixing Seamless calcium silicate ceiling made out of 1800 x 1200 mm size board of siliceous and calcareous material reinforced with cellulose fibre fixed to the ceiling section with 25 mm long self drilling and tapping screws having phillips head with under head cutter at 200 mm centre to centre, including finshing the joint of face board with specially formulated jointing compound and 48 mm wide fibre tape to provide seam less finish formulated jointing compound and 48mm wide fibre tape to provide seamless finish including preparation of newly surfaces of ceiling and applying two coats of oil bound distember over and including one coats of wall care putty complete all as specifeid and directed.

Complete removal of existing treatment and applying two coats of oil bound distemper over a coat of wall putty 1mm thick on plasterd surfaces preparatory to distempering on wall surface.

Taking down carefully old multi-split air conditioners of various capacity, making good the disturbed surface & wall and shifting to MES store yard complete all as specified and directed.

Supply Installation, Testing & Commissioning of modular type Variable Refrigerant Flow/Variable Refrigerant Volume air cooled Outdoor units suitable for cooling and heating, having all hermetically sealed inverter type Scroll Compressor(s), minimum two compressors for above 14 HP modules, microprocessor based Controller, top discharge type condensing unit(s), with R 410 A Refrigerant, vibration isolators, with suitable foundation etc. complete as required. The unit shall deliver the rated capacity at AHRI Conditions and work even at 50°C ambient temperature without tripping. The unit shall be suitable to work on 400V +/- 10%, 3 Phase, 50Hz AC power supply. The unit shall be filled with first charge of the refrigerant and ready for use as required. The COP at AHRI conditions shall not be less than 3.1 and IEER not less than 6.5. The ODU shall have low noise condenser fans with extrenal static pressure of the outdoor unit shall be more then 75 Pa to avoid hot air recirculation, auto address setting, auto check function for connection error and complete with indoor and outdoor units with individual controller and with fittings etc. The compressor and VRV/VRF Outdoor make should be same. For enhanced energy savings the COP of each refrigerant circuit system mentioned below shall be 7.20 minimum at 50% load, at AHRI Condition in cooling mode. The unit shall also have feature to automatically modulate the evaporative temperature between 6 deg C to 11 deg C with respect to load for better comfort and energy efficiency. (Unit shall deliver atleast 100% of mentioned nominal capacity @ 43 Deg C). The Unit should have free phase technology so that unit can work in case of phase reversal also without tripping of units. Note: (i) Work includes taking down of existing AC plants from its fixed position & depositing safely to MES store yard along with transportation (ii) The bidder is required to submit NIT specific certificate from the OEM duly signed and stamped for back to back support (along with Technical bid, failing in submission of Certificate will led to rejection of the Bid). (iii) Contractor is required to submit OEM rating chart of the quoted outdoor unit for COP and capacity verification to the department for approval from Accepting Officer (iv) Work has to be executed by OEM/OEM Authorised Agency

VRF Outdoor Unit with 26 HP Capacity at 43 Deg C.

Dutable Type Indoor AC unit 7.8 TR capacity

EXV/Y Kit for Dutable Type Indoor Unit

T Joints

Remote Control Corded Type

Supply and installation, testing and commissioning of hard drawn copper refrigerant pipes for VRF Indoor and Outdoor units with necessary copper fittings, laid neatly, secured with GI clamps and wall brackets with pipe supports as per technical specifications, at every 1.5 meter interval and at bends including insulation with 19 mm thick class "O" nitrile rubber, UV treatment (coating) for exposed refrigerant piping insulation complete all as required at site as per specifications, of the following sizes, complete all as specified and directed:- MAKE:- MANDLEY / UNIFLOW / MANDEV / MAXFLOW

34.10mm (1.375") of thickness 1.219mm (0.048")

28.60mm (1.125") of thickness 1.219mm (0.048")

22.20mm (0.875") of thickness 1.219mm (0.048")

15.90mm (0.625") of thickness 1.219mm (0.048")

9.50mm (0.375") of thickness 0.914mm (0.036")

MS Hanger Supports for Running Refrigerant Pipe

Supply & fix copper control cum transmission shielded wiring 2C*1.5Sqmm or as per OEM recommodation in PVC conduit between indoor & outdoor, indoor units and their remotes. Make- Havells/ Polycab/RR

Supply & fix PVC drain pipes threaded 32 mm dia and fith clamps at every 1 m along with bends and maintaining slope complete all as specified and directed by Engr-in-Charge

Supply & Charging of additional R407/R410 refregerent

Fabrication of MS Stand using C Channel with min thickness of 3mm for Outdoor Unit

Supply, fabrication, installation and testing the FLEXIBLE CONNECTIONS constructed of fire resistance flexible double canvas.

GI Cable Tray for covering any exposed wires and Copper pipes

Repairs to the existing ducting works to seal all leakages

Supply and fixing of Aluminium Grill

Chemical ACP Guard Coating for exposed Copper pipe in ODU and IDU's

Supply, Laying, jointing and testing of electric cable XLPE insulated, 1100 volt grade heavy duty armoured with stranded Copper conductor laid in trenches/duct/pipe including all electrical connection with required lugs and nuts, bolts complete all as specified and directed for the following:- Make- Havells/ Polycab/RR

3 Core x 2.5mm² for Indoor Unit (Copper)

4 Core x 16mm² for Outdoor Unit (Copper)

S&F MCB TPN 63 Amp complete all as specified and directed. Make - Havells/Legrend/ Indoasian

S&F MCB SP 16A complete all as specified and directed. Make - Havells/Legrend/ Indoasian

HONEY COLLECTION

G M CONSTRUCTION COMPANY

shivrefrigeration

RefAir Technical Services

RUCHIKA ENGG.WORKS

Leo Air and Power Solution pvt Ltd.

P S TRADERS

SNOWY ENGINEERING INC