Modernisation work in CGMT building in connection with space optimization for revenue generation of office space SH SITC of VRF type AC units in 2nd and 3rd floor and associated works

Amount

Part A -SITC of VRF AC units

Supply Installation, Testing & Commissioning of modular type Variable Refrigerant Flow/Variable Refrigerant Volume air cooled Outdoor units suitable for cooling, 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 40°C 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 .(Make-LG/Blue star/Voltas/Daikin/Carrier/Hitachi)

Note - For each floor, combination of multiple outdoor units shall meet the HP requirement for the floor. Minimun units catering each floor shall be two numbers

Estimated capacities for various floors are as follows 2nd floor-72 HP 3rd floor-56 HP 4th floor- 22 HP 6th floor-46 HP

Supply, installation, testing and commissioning of following minimum capacity VRV/VRF High wall type Indoor unit equipped with washable synthetic media pre-filter, fan section with low noise fan/dynamically balanced blower, multispeed motor, coil section with DX copper coil, electronic expansion valve, outer cabinet, cord less remote control, drain pan, necessary accessories etc., suitable for operation on 230 V ± 10%, 50 Hz, single phase AC supply, complete as required. The unit shall have automatic force shut down provision in case of fire on receiving signal from BMS System/elsewhere. The cooling capacity of indoor unit will be at air inlet conditions of 27 Degree C DB and 19 Degree C WB temperature.

Supply, installation, testing and commissioning of following minimum capacity and external static pressure VRF/VRV ceiling mounted ductable type Indoor unit equipped with washable synthetic media pre-filter, fan section with low noise fan/dynamically balanced blower, multispeed motor, coil section with DX copper coil, electronic expansion valve, corded remote control, outer cabinet, vibration isolators, drain pan, other necessary supports etc., suitable for operation on single phase AC supply 230 V ± 10%, 50 Hz complete as required. The unit shall have automatic force shut down provision in case of fire on receiveing signal from BMS System. The cooling capacity of indoor unit will be at air inlet conditions of 27 Degree C DB and 19 Degree C WB temperature.

4.0TR (Mid static Ductable units -Minimum 45 Pascal external static pressure )

High Static Ductable units (minimum 110 pascal external static pressure)

Supply, installation, testing and commissioning of following minimum capacity and external static pressure VRF ceiling mounted ductable type Indoor unit -AHU type equipped with washable synthetic media pre-filter, fan section with low noise fan/dynamically balanced blower, multispeed motor, coil section with DX copper coil, electronic expansion valve, corded remote control, outer cabinet, vibration isolators, drain pan, other necessary supports etc., suitable for operation on single phase AC supply 230 V ± 10%, 50 Hz complete as required. The unit shall have automatic force shut down provision in case of fire on receiveing signal from BMS System. The cooling capacity of indoor unit will be at air inlet conditions of 27 Degree C DB and 19 Degree C WB temperature.

11.0TR High Static Ductable units (minimum 110 pascal external static pressure)

18.0TR High Static Ductable units (minimum 110 pascal external static pressure)

Supply, Installation, testing and commissioning of wi fi Central Controller i/c required licensed software etc as required. The system shall enable the user to control multiple indoor units from a central location through an android and IOS based tab or smart phone through user friendly app supplied free of cost with lifetime licence. The system shall be able to control all the indoor units and outdoor units. WIFI interface shall be mounted conveniently on the wall /ceiling and be connected to the indoor/outdoor units. The scope of work also includes necessary communication wiring from outdoor to indoor units and also to wifi interface central controller.

The item description given above is indicative only. Wifi central controller of each OEM is unique and agency shall supply the wifi controller offered by the Original Equipment Manufacturer and do the necessary communication wiring recommended by the OEM

Supply, 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 specified thickness as given below for Suction and Liquid lines, all accessories as per specifications etc. as required

41.27 mm dia (OD) (Hard drawn) with tube thickness 1.62 mm with 19 mm thick insulation

38.1 mm dia (OD) (Hard drawn) with tube thickness 1.62 mm with 19 mm thick insulation

34.9 mm dia (OD) (Hard drawn) with tube thickness 1.62 mm with 19 mm thick insulation

31.8 mm dia (OD) (Hard drawn) with tube thickness 1.62 mm with 19 mm thick insulation

28.58 mm dia (OD) (Hard drawn) with tube thickness 1.2 mm with 19 mm thick insulation

25.4 mm dia (OD) (Hard drawn) with tube thickness 1.2 mm with 19 mm thick insulation

22.2 mm dia (OD) (Hard drawn) with tube thickness 1.2 mm with 19 mm thick insulation

19 mm dia (OD) (Hard drawn) with tube thickness 1.2 mm with 19 mm thick insulation

15.86 mm dia (OD) (Soft drawn) with tube thickness 1.2 mm with 19 mm thick insulation

12.7 mm dia (OD) (Soft drawn) with tube thickness 1.2 mm with 19 mm thick insulation

9.5 mm dia (OD) (Soft drawn) with tube thickness 1.2 mm with 19 mm thick insulation

6.4 mm dia (OD) (Soft drawn) with tube thickness 1.2 mm with 19 mm thick insulation

1)The Copper Piping & Piping Circuit should be with Minimum Number of joints, which shall be attained by

i) Using One End Expanded Tubes

(ii) Bending the tubes instead of using elbow joints wherever 90 degree bending is required

(2) Piping should be routed at site in such a manner, that brazed joints in the refrigeration piping are kept to a minimum.

(3) The makes of tube fittings shall be same as that of tubes. (4) The thickness of fittings used shall be same as that of the pipe.

Supply and fixing of Variable refrigerant flow distribution REFNETS in the suction & Liquid lines for various sizes of copper refrigerant piping including insulation etc.as required. (Y Joint for refrigerant piping ) (pair)

Supply, 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 etc as per approved drawing and specifications of following sheet thickness,complete as required

Thickness 0.63mm sheet

Thickness 0.80 mm sheet

Thickness 1.00 mm sheet

SITC of factory made fresh air damper with louvers , control lever, filter, etc as required

Supplying & fixing of powder coated extruded aluminium Supply Air Grills with aluminium volume control dampers as per specifications.

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

Supplying, fixing, testing and commissioning of supply air diffusers of powder coated aluminium with aluminium volume control dampers with anti smudge ring & removable core.

Supplying, fixing testing commissioning of Return air diffusers of powder coated aluminium without volume control dampers with anti smudge ring & removable core as required

Supplying, Fixing, testing and commissioning of fire dampers in supply air duct/main branch and return air path as and where required of required sizes i/c control wiring,the damper shall be motorized and spring return so as to close the damper in the event of power failure automatically and open the same in case of power being restored. The spring return action shall be inbuilt mechanism and not externally mounted. The damper shall also be closed in the event of fire signal complete as required and as per specifications.

Fire damper

Actuator

Supply & installation, testing and commissioning of Rigid heavy class CPVC piping complete with fittings, supports as per specifications and duly insulated with 6 mm thick closed cell cross linked polyethylene (XLPE) tubular insulation as per specifications as required

25 mm dia

32 mm dia

40 mm dia

Supplying, installing and testing of extruded aluminium Air louvers with bird screen in accordance with approved shop drawings and specifications complete as required.

Supply and fixing of Acoustic insualation with 13 mm Thickness Nitrile Rubber sheet - Open cell with adhesive of low thermal conductivity & density 140Kg/cum etc as per specifications as required

Supply and fixing of suitable Canvass Connections for connecting ductable indoor unit and AHU to ducting etc as required

Supplying and fixing of following thickness duly laminated aluminum foil of mat finish closed cell Nitrile rubber (Class “O”) insulation on existing duct after applying suitable adhesive for Nitrile rubber. The joints shall be sealed with 50 mm wide and 3 mm thick self adhesive nitrile rubber tape insulation complete as per specifications and as required.

09 mm thickness

Supply and fixing of 3 core x 2.5 Sqmm copper flexible FRLS cable with 2 mm thick heavy duty IS make PVC conduit for indoor units etc as required

Supply and fixing of control cum transmission wiring of 3 x 1.0 sqmm copper shield cable in 2 mm thick heavy duty ISI make PVC conduit between indoor and outdoor etc complete as required.

Supply, installation, testing & commissioning of wall mounted axial fans with bird cowl etc as required.(Make-Caryaire/Ravistar/Mapro/ Tristar)

Supply, installation, testing & commissioning of centrifugal inline fans with flexible connectors i/c giving connections etc as required .(Make-Caryaire/Ravistar/Mapro/ Tristar)

200 cfm, 2mm Static

300 cfm, 2mm Static

400 cfm, 2mm Static

500 cfm, 2mm Static

Supply and delivery of following size 1No. XLPE armoured cables with aluminium conductor 650/1100 V. grade conforming to IS : 7098 (Part-1) 198 for extending power supply to the outdoor units of VRF system i/c transportation etc as required

3.5 C x 35 sqmm

3.5 C x 95 sqmm

3.5 C x 150 sqmm

Supply and delivery of following size 1No. XLPE armoured cables with copper conductor 650/1100 V. grade conforming to IS : 7098 (Part-1) 198 for extending power supply to the outdoor units of VRF system i/c transportation etc as required

4 C x 6 sqmm

4 C x 10 sqmm

4 C x 16 sqmm

4 C x 25 sqmm

Laying of one number PVC insulated and PVC sheathed / XLPE power cable of 1.1 KV grade of following size in the existing masonry open duct as required.

Upto 35 sq. mm

Above 35 sq. mm and upto 95 sq. mm

Above 95 sq. mm and upto 185 sq. mm

Laying and fixing of one number PVC insulated and PVC sheathed / XLPE power cable of 1.1 KV grade of following size on cable tray as required.

Upto 35 sq. mm (clamped with 1mm thick saddle)

Above 35 sq. mm and upto 95 sq. mm (clamped with 25x3mm MS flat clamp)

Above 95 sq. mm and upto 185 sq. mm (clamped with 25/40x3mm MS flat clamp)

Supplying and making end termination with brass compression gland and aluminium lugs for following size of PVC insulated and PVC sheathed / XLPE aluminium conductor cable of 1.1 KV grade as required.

3.5 C x 35 sqmm

3.5 C x 95 sqmm

3.5 C x 150 sqmm

Supplying and making end termination with brass compression gland and copper lugs for following size of PVC insulated and PVC sheathed / XLPE copper conductor cable of 1.1 KV grade as required.

4 C x 6 sqmm

4 C x 10 sqmm

4 C x 16 sqmm

4 C x 25 sqmm

Providing and fixing 25 mm X 5 mm G.I. strip on surface or in recess for connections etc. as 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

Supplying and installing following size of perforated Hot Dipped Galvanised Iron cable tray “bends” (galvanisation 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

Supplying and installing following size of perforated Hot Dipped Galvanised Iron cable tray “Cross member” (galvanisation 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

Supplying and installing following size of perforated Hot Dipped Galvanised Iron cable tray “Tee” (galvanisation 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

Providing and fixing 4.00 mm dia copper wire on surface or in recess for loop earthing along with existing surface/ recessed conduit/ submain wiring/ cable as required.

Supply and fixing of under deck insulation wih minimum 13mm thick nitrile rubber, with closed cell structure, along with aluminium foil ( for the 6th floor ceiling ) with suitable adhesive, fixing etc as required

Supply, installation, testing and commissioning of wall mounting cubicle type LT panel suitable for Outdoor type/weather proof installation with double door and sloping top cover extended 15 cm on all sides, for 415 V, 3 phase, 4 wire 50 HZ AC supply system, fabricated in compartmentalised design from CRCA sheet steel of 2mm thick for frame work, covers, doors etc, 3mm thick for gland plates i/c cleaning and finishing complete with 7 tank process for powder coating (2 coats ) in approved shade, having min. 200 Amps capacity,TPN aluminium alloy busbars of high conductivity, DMC/SMC busbar supports with short circuit withstand capacity of 31MVA for 1 sec,lifting hooks, fabrication shall be done in transportable sections, entire panel shall have common copper earth bar of size 25mm x 5mm at the rear with 2 Nos. earth stud, solid connections from main bus bars to switch gears with solid conductors and control wiring with 1.5 sqmm PVC insulated copper conductor cable, cable alleys, cable gland plates in two half i/c providing following switchgears, transporting from factory to site, unloading, leading etc as required .

Incoming:

160 A 25kA FP MCCB, Ics=100% Icu with adjustable overload and short circuit settings, thermal release range of (100-125 A) with spreader terminals , rotary handle - 1 Nos.

CTs- ratio 125/5A 15VA CL-0.5 - 3 nos.

RYB phase indicating LED lamps with control fuses and switches - 1 set.

TPN Aluminium busbars of min 200 Amps capacity with heat shrinkable coloured sleeves and i/c DMC/SMC busbar cross section, size supports and their spacing etc for withstanding fault level of 31MVA for 1 sec.

Outgoings

63A 25kA 4P MCCB, Ics=100% I cu, with adjustable overload and short circuit settings with thermal release range of (40-50 A), Spreader Terminals , rotary handle etc - 4 Nos.

Complete as above

Supply, installation, testing and commissioning of wall mounting cubicle type LT panel mounted suitable for Outdoor type/weather proof installation with double door and sloping top cover extended 15 cm on all sides for 415 V, 3 phase, 4 wire 50 HZ AC supply system, fabricated in compartmentalised design from CRCA sheet steel of 2mm thick for frame work, covers, doors etc, 3mm thick for gland plates i/c cleaning and finishing complete with 7 tank process for powder coating(2 coats ) in approved shade, having min. 160 Amps capacity, TPN aluminium alloy busbars of high conductivity, DMC/SMC busbar supports with short circuit withstand capacity of 31MVA for 1 sec, lifting hooks, fabrication shall be done in transportable sections, entire panel shall have common copper earth bar of size 25mm x 5mm at the rear with 2 Nos. earth stud, solid connections from main bus bars to switch gears with solid conductors and control wiring with 1.5 sqmm PVC insulated copper conductor cable, cable alleys, cable gland plates in two half i/c providing following switchgears, transporting from factory to site, unloading, leading etc as required .

Incoming:

125 A 25kA FP MCCB, Ics=100% Icu with adjustable overload and short circuit settings, thermal release range of (80-100A) with spreader terminals , rotary handle etc - 1 No.

CTs- ratio 125/5A 15VA CL-0.5 - 3 nos.

RYB phase indicating LED lamps with control fuses and switches - 1 set.

TPN Aluminium busbars of min 160Amps capacity with heat shrinkable coloured sleeves and i/c DMC/SMC busbar cross section, size supports and their spacing etc for withstanding fault level of 31MVA for 1 sec.

Outgoings

63A 25kA 4P MCCB, Ics=100% I cu, with adjustable overload and short circuit settings with thermal release range of (40-50 A), Spreader Terminals , rotary handle etc - 3 Nos.

Complete as above

Supply, installation, testing and commissioning of wall mounting type cubicle type LT panel mounted suitable for Outdoor type/weather proof installation with double door and sloping top cover extended 15 cm on all sides, for 415 V, 3 phase, 4 wire 50 HZ AC supply system, fabricated in compartmentalised design from CRCA sheet steel of 2mm thick for frame work, covers, doors etc ,3mm thick for gland plates i/c cleaning and finishing complete with 7 tank process for powder coating(2 coats ) in approved shade, having min. 100 Amps capacity,TPN aluminium alloy busbars of high conductivity, DMC/SMC busbar supports with short circuit withstand capacity of 31MVA for 1 sec, lifting hooks, fabrication shall be done in transportable sections, entire panel shall have common copper earth bar of size 25mm x 5mm at the rear with 2 Nos. earth stud, solid connections from from main bus bars to switch gears with solid conductors and control wiring with 1.5 sqmm PVC insulated copper conductor cable, cable alleys, cable gland plates in two half i/c providing following switchgears, transporting from factory to site, unloading, leading etc as required .

Incoming:

63 A 25kA FP MCCB, Ics=100% Icu with adjustable overload and short circuit settings, thermal release range of (32-40A) with spreader terminals , rotary handle- 1 No.

CTs- ratio 63/5A 15VA CL-0.5 - 3 nos.

RYB phase indicating LED lamps with control fuses and switches - 1 set.

TPN Aluminium busbars of min 100 Amps capacity with heat shrinkable coloured sleeves and i/c DMC/SMC busbar cross section, size supports and their spacing etc for withstanding fault level of 31MVA for 1 sec.

Outgoings

32 A 25kA 4P MCCB, Ics=100% I cu, with adjustable overload and short circuit settings with thermal release range of (16-20 A), Spreader Terminals , rotary handle etc - 3 Nos.

Complete as above

Note : All the panel drawings shall be got approved from the Engineer in charge before fabrication and shall be conforming to Kerala State Electrical Inspectorate guidelines

The panels shall have slopping roof, double door type, weather proof and also to meet IP 66 protection requirements against dust, solid and liquid objects

The panel shall be provided with 2 coats of powder coating.

1.The entire VRF AC installation comprising of outdoor units, high wall indoor units, ductable AC units, refrigerant system, electrical panels ,ducting system etc shall be guaranteed for period of two years from the actual date of completion of work.

Part B- Comprehensive maintenance of VRF (Variable refrigerant flow ) AC units

Comprehensive Annual Maintenance Contract for the 196 HP Variable refrigerant flow Air conditioning system comprising of indoor high wall units, indoor ductable units spread over 2nd,3rd ,4th and 6th floors of the CGMT office building and its outdoor units on terrace, i/c refrigerant piping between indoor units and outdoor units ,LT Panels for the VRF system and other associated components i/c repairing of the units, replacing the defective parts with new one, replenishing the refrigerant as a result of a leak from the system, replacement of condenser coils, Compressor, Fans, Control / Microprocessor control unit/central controller, replacing defective switchgears in the LT Panels if required,quarterly preventive maintenance and servicing , attending break down faults as and when required, painting of out door units once in two years etc after the completion of 2 years defects liability Period and also as per the detailed specifications attached

1'st year after 2 year of defect liability period

2'nd year after 2 year of defect liability period

3'rd year after 2 year of defect liability period

CLIMATE AIR CONDITIONING