DESIGN ENGINEERING SUPPLY INSTALLATION TESTING AND COMMISSIONING OF HVAC WORK AT HEAD OFFICE KSFDC VAZHUTHACAUD TRIVANDRUM

MACHINE SIDE WORKS

DX SYSTEM -- DUCTED TYPE SPLIT A/C

Supply, Installation testing and commissioning of Inverted Ducted type split/package air cooled Air-conditioners each complete with scroll compressor, air cooled blue fin coated condenser and evaporator with copper tubes, GSS casing, filters, cooling coils, fan motors, control wiring, refrigerant controls and accessories,safety devices (HP/LP cut out) including MICRO-PROCESSOR CONTROL with indication lamps for the operation of the system with thermostat fixed in the respective rooms to adjust the temperature according to the equipments requirements with Micro- processor control panel for each machine. Bidder to elaborate the features of Micro- processor panel. GI painted frame works suitable for maintenance purpose having catwalk support with handrails for outdoor units & making good of civil work's.Bidder shall be quoted with spring type vibration isolators for indoor units for arresting the vibration transferring to the floors.

The quote should be inclusive of control cabling from machine out door unit to indoor unit and from from DB to indoor unit power cabling along with earthing. This shall facilitate all functions such as ON OFF thermostat to compressor control, fan interlocks, HP/LP & AFT controls etc. And MS base frame for outdoor units (including Catwalk support of MS base frame with C Channel and L angles for outdoor units for maintenance purpose) complete with epoxy painting, vibration isolation pads, supports, hangers, railing, brackets etc including civil works. Note: Apply 2 coats of epoxy primer and 2 coats of black paint, Each air conditioner unit should be provided with 10 Rmt. of copper piping between Indoor unit to outdoor unit as specified in (1.2) Refrigerant piping. The refrigerant shall be eco-friendly gasses like HFC, R 410A or latest, These eco friendly refrigerants shall be with zero Ozone depleting substances. Commissionming of the system with refrigerant gas after necessary pressure holding for 24Hrs upto 500PSI nitrogen and charging of the system after necessary vaccuming etc price shall be Inclusive of leading, shifting, positioning and Installation of ductable indoor / outdoor units, transportation, etc

16.50 TR ( 21HP) - Ceiling Suspended Ducted type (400 CFM/TR) Inverter type compressor

REFRIGERANT PIPING

Installation and commissioning of hard/soft copper refrigerant piping, complete with Nitrile Insulation, fittings, elbows, bends, supporting arrangement on walls, cable trays/trenches.( FOR MACHINES HAVING PIPE LENGTH LONGER THAN 20 MTS, RESIZE USING LARGER DIA.). The suction & liquid line shall be insulated with 13 mm thick tubular nitrile rubber insulation with weather protection for outdoor installation. The piping length estimated based on considering single loop & single line distance (Ref. Ppg in bunches –16.5TR AC Unit with 1 No. 11 TR and 1 No 5.5 TR Compressors and 1 RMT of 2 sets of Ref Pipes i.e., 4 Nos. Pipes in all considered as 1 RMT) . The contractor to quote based on the estimate of actual length according to the number of loops for corresponding. Including beam/wall cutting , making good of civil works etc.

16.5 TR - Ceiling Suspended Ducted type

DRAIN PIPING:

Supply, installation, testing & commissioning of following sizes. insulated PVC drain pipe' from AHU drain pans to nearest floor drain complete with interconnection, flanges, elbows, tees, nuts, U-trap etc. The insulation shall be 6 mm thick closed cell Class O Nitrile Rubber foam insulation. Including wall cutting , making good of civil works etc 32mm dia. --- 1" nominal dia --- 2kgf/ sq. cm --- class 2

AIR DISTRIBUTION SYSTEM

SHEET METAL WORKS:

Supply, Fabrication, installation, testing & commissioning of Factory fabricated GI spiral oval ducts complete with splitter dampers, turning vanes, access doors, supports, etc Ducting to be as per SMACNA standards. Galvanizing shall be class VII-light coating of zinc, nominal 120 gm/sq.m and lock forming quality prime material. Duct coil ( sheet metal in Roll form) lines to facilitate location of longitudinal seams at corner/folded edges only, for required duct rigidity and leakage free characteristics. No longitudinal seams permitted along any face side of the duct. All ducts, transformation pieces and fittings to be made on CNC profile cutter for requisite accuracy of dimensions, location and dimensions of notches at the folding lines. all edges to be machine treated using lockformers,flanges and rollers for turning up edges. Reinforcement, bracing, supporting etc to comply with SMACNA standards.

All oval duct work shall be pre-insulated internaly with 10mm thick acoustic insulation open cell elastomeric nitrile foam rubber insulation class stuck to duct as per specifications provided in item number 3.2 Acoustic insulation

Apart from oval duct work all exposed duct work should be painted with 2 coats of epoxy primer and 2 coats of epoxy paint. All the supports of the duct will be painted to match the ducting.

24 Gauge preinsulated oval duct work

22 Gauge preinsulated oval duct work

20 Gauge preinsulated oval duct work

Supply, Fabrication, installation, testing & commissioning of Site fabricated GSS ducting complete with splitter dampers, turning vanes, access doors, supports, etc Ducting to be as per SMACNA standards. Galvanizing shall be class VII-light coating of zinc, nominal 120 gm/sq.m and lock forming quality prime material.

All exposed duct work should be painted with 2 coats of epoxy primer and 2 coats of epoxy paint All the supports of the duct will be painted to match the ducting

24 Gauge

22 Gauge

Supply, testing, commissioning and balancing of one way blow 16G extruded aluminum powder coated continuous Linear grilles for supply and return air with 4 side flanges and as per approved colour shade by the architect.

Supply air part shall be equiped with collar dampers multi opposed blade as per specification.

Return air grill wihout collar dampers

Supply, installation, testing and commissioning of multi blade opposed blade GSS dampers for ducts to be provided with suitable links, levers and quadrants for manual control of volume of air flow and for proper balancing of the air distribution system .

INSULATION WORKS

THERMAL INSULATION

Supply Installation, Testing and commissioning of Supply Duct insulation 13mm thick closed cell elastomeric nitrile foam rubber insulation class stuck to duct as per specifications

Thermal insulation material for ducts shall be 13mm closed cell elastomeric non polar UV resistant-UL94-Class-O and Nitrosmine free. Nitrile Rubber/EPDM of thermal conductivity of the insulation material shall not exceed 0.038 W/m K at an average temperature of of 30 degC. Density of nitrile rubber shall be 40-60 Kg/m3. The product shall have temperature range of -40 deg C to 105 deg C. The insulation material shall be fire rated for Class O as per BS 476 Part 6: 1989 for fire propagation test and for Class 1 as per BS 476 Part 7,1987 for surface spread of flame test. Water vapor permeability shall not less then 0.024 per inch ( 2.48x10-14 Kg/m.s Pa ) as per DIN 53122 part DIN 52615.

13 MM Nitrile Rubber

ACOUSTIC INSULATION

Inside lining of oval duct / rectangular duct work shall be pre-insulated internaly with 10mm thick acoustic insulation open cell elastomeric nitrile foam rubber insulation class stuck to duct as per specifications upto 6 mtrs from the machine mouth.

Acoustical insulation material for ducts shall be 10 mm open cell elastomeric non polar – UV resistant-UL94-Class- 1 - and Nitrosmine free. Nitrile Rubber/EPDM of thermal conductivity of insulation material shall not exceed 0.046 W/m K at an average temperature of of 30 degC. Density of nitrile rubber shall be 120-140 Kg/m3. The product shall have temperature range of -40 deg C to 105 deg C. The insulation material shall be fire rated for Class 1 as per BS 476 Part 7: (1989 for fire propagation test and for Class 1 as per BS 476 Part 7,1987 for surface spread of flame test.) Water vapor permeability shall not less then 0.024 per inch (2.48x10-14 Kg/m.s Pa ) as per DIN 53122 part DIN 52615.

10 MM Nitrile Rubber

Comprehensive: Annual maintenance contract charges Including spares , gas and consumables for the above plant per year for 5 years on per ton basis and percentage increase every year for 4 years after warranty period of 1 year. The frequency of servicing shall be once in 3 months every year for routine service and immediate on break down calls. (Base price w/o GST)

1st year

2nd year

3rd year

4th year

5th year

Non comprehensive: Annual maintenance contract charges Excluding spares , gas and consumables for the above plant per year for 5 years on per ton basis and percentage increase every year for 4 years after warranty period of 1 year. The frequency of servicing shall be once in 3 months every year for routine service and immediate on break down calls. (Base price w/o GST)

1st year

2nd year

3rd year

4th year

5th year