Tender For Setting Up Of Solar Electric Water Heating System At Jawahar Navodaya Vidyalayas For Punjab And Himachal Pradesh Under Chandigarh Region; SOLAR WATER HEATING SYSTEM OF CAPACITY: 500 LPD EACH Supply, Installation, Testing & Commissioning of 500 LPD Flat Plate based thermosyphone circulation Non-Pressurized Solar water heating Systems comprising Flat Plate collectors , internal system piping, insulated hot water storage tank , Electric Back up Heaters, plumbing accessories, electrical items as required. Including DLP of complete system for 2 years and Guarantee/warranttee of Solar water heating unit for 5 years. Details of each items to be used in one 500 LPD system are mentioned below: ITEMS FOR 1 SET 14.2 SOLAR WATER HEATER (FLAT PLATE TYPE COLLECTOR) Supply, Installation, Testing & Commissioning of Flat Plate collector (FPC) Solar Water Heating System comprising of solar flat plate collector ISI Marked made of copper sheet/copper tube, absorber toughened glass cover and aluminum extruded channel confirm to IS: 12933 (Part 1,2,3&5 ). The system shall have temperature gauges, strainer, water meter 2 nos., cold and hot water tank. The system shall have suitable electric backup complete with control and power wiring etc., as following. Cover plate: cover plate shall be toughened glass and thickness of 4.0 mm (min) conforming to section -1 of IS: 12933(pt-2)/2003 the solar transmittances of the cover plate shall be minimum 82 percent at near normal incidence. Collector box: collector box shall be made of aluminum sections. The type grade, size, and finish of the material used shall be as per section- 2 of IS: 12933 (pt-2)/2003: the minimum thickness of aluminum shall be as under: Channel section for sides 1.6 mm Sheet for bottom 0.7 mm Support for glass retaining 1.2 mm Sheet for entire body 1.0 mm The insulation of collector box shall be minimum 0.96 m2 ⁰C/W for back insulation and minimum 0.48 m square degree c/w for side insulation conform to sec. 4 of IS 12933 (pt – 2) / 2003. (b) Gaskets and grommets: gaskets and grommets shall conform to Sec. 5 of IS 12933 (pt-2)/ 2003. Absorber Shall Consist of riser, Header and Sheet for absorber. The Diameter of header shall be 25.4 + /-0.5mm and thickness 0.71mm. The Diameter of riser shall be 12.7 + /-0.5 mm and thickness 0.56mm and made of copper only. The distance between the risers from center to center shall be 120mm. type grade, size , workmanship and finish of the material used shall be as per section- 3 of IS : 12933 (pt -2 ) /2003 the sheet for absorber shall be of copper sheet 34 gauge/copper tube (at least 10 nos.) Riser and header assembly designed for working pressure up 245 k pa (2.5 kg/ cm square) shall be tested for leakage at a minimum hydraulic pressure of 490 k pa (5 kg/ cm square). Sheet for absorber shall be made of copper only. Type Grade, size, workmanship and finis of the material used shall be per Section -3 of IS: 12933 (pt -2) /2003 HDPE/LDPE cold water tank shall be dully elected on MS angle /channel duly painted with dual coats of enamel paint. The overall structure of solar collector plate module shall be design to with stand wind velocity of 100 kms /hr (minimum) or more as per site. Hot water tank : The tank capacity shall be minimum 1.25 time the rated capacity of system. Inner tank material shall be stainless steel SS 316, as per IS 1730 GRADE SS304-2B. Hot water shall be insulated with high density injected PUF insulation: 50 mm, of 50 mm thickness between inner and outer tank ensures maximum heat rotenone ever season. Suitable nos. ISI Marked electrical heaters along control panel, MCCB, with all protections, and all safety provisions so as to achieve 60⁰C temperature rise in an hour. The range of thermostat shall be upto 800C. 14.2.5 500LPD Set 161 104397.00 16807917.00 PLUMBING ITEMS PER SET Providing and fixing Chlorinated Polyvinyl Chloride (CPVC) pipes, having thermal stability for hot & cold water supply, including all CPVC plain & brass threaded fittings, 20 mm nominal dia Pipes (Min.: 15Mtrs OR as per actual site requirement) Nitrile foam insulation of 9 mm thick with 26 gauge aluminium cladding for 20mm dia Hot water Pipe (Min.: 8Mtrs OR as per actual Site requirement) Providing and fixing ball valve (brass) of approved quality, High or low pressure, with plastic floats complete : 20 mm nominal bore (Min.: 2nos. OR as per actual site requirements) Providing and fixing gun metal non- return valve of approved quality (screwed end) : NVS (PUNJAB UNDER CHANDIGARH REGION) SOLAR WATER HEATING AND ELECTRIC WATER HEATER/GEYSER UNITS BOQ 1.0 DSR 2025 25 mm nominal bore -Horizental (Min.: 2nos. OR as per actual site requirements) Auto Air Vent -20mm (Min.: 1nos.OR as per actual site requirements) Providing and fixing C.P. brass bib cock of approved quality conforming to IS:8931 15 mm nominal bore (Min.: 1nos.OR as per actual site requirements) Electrical Wiring for incoming to ACDB : Wiring for circuit/ submain wiring alongwith earth wire with the following sizes of FRLS PVC insulated copper conductor, single core cable in surface/ recessed medium 2 X 6 sq. mm + 1 X 6 sq. mm earth wire (Min.: 15mtrs OR as per actual site requirements) set 161 29170.00 4696370.00 ELECTRIC WATER HEATING SYSTEM OF CAPACITY : 500 LPD EACH Supply, Installation, Testing & Commissioning of 500 LPD Electric Water Heating System/ Geyser comprising Electric Heaters , internal system piping, insulated hot water storage tank, plumbing accessories, electrical items as required. Including DLP of complete system for 2 years and Guarantee/warranttee of Electric water heating/Geyser unit for 5 years. Details of each items to be used in one 500 LPD system are mentioned below: Set 10 97247.83 972478.30 ITEMS FOR 1 SET SITC of 500LPD Electric Heating System/ Geyser having Hot Water Storage Tank made out of MS steel of 2.0 mm thickness and Manufacturer Standard Dish Thickness with internal epoxy/PU coating OR SS 2 mm thick and outer precoated Aluminium Cladding over 50mm PUF Insulation having density not less than 32Kg/Cu.mtr. Maintenance free sacrificial/Magnesium Anode, provided with Electrical Heater 2Nos. x 3KW electrodes with thermostat/ Auto Cut , Cold Water inlet, Hot Water outlet. Storage Tank Stand made out of MS angle iron size shall not be not less than 35mmx35mmx3mm, CC Foundation as per the direction of Engineer incharge. PLUMBING ITEMS PER SET Providing and fixing Chlorinated Polyvinyl Chloride (CPVC) pipes, having thermal stability for hot & cold water supply, including all CPVC plain & brass threaded fittings, including fixing the pipe with clamps at 1.00 m spacing. This includes jointing of pipes & fittings with one step CPVC solvent cement and testing of joints complete as per direction of Engineer in Charge. Internal work - Exposed on wall 20 mm nominal dia Pipes (Min.: 15Mtrs OR as per actual site requirement) Nitrile foam insulation of 9 mm thick with 26 gauge aluminium cladding for 20mm dia Hot water Pipe (Min.: 8Mtrs OR as per actual Site requirement) Providing and fixing ball valve (brass) of approved quality, High or low pressure, with plastic floats complete : 20 mm nominal bore (Min.: 2nos. OR as per actual site requirements) Providing and fixing gun metal non- return valve of approved quality (screwed end) : 25 mm nominal bore -Horizental (Min.: 2nos. OR as per actual site requirements) Y Strainer -Screwed- 20mm dia -Bronze (Min.: 1nos.OR as per actual site requirements) Air Release Valave- 20mm (Min.: 1nos.OR as per actual site requirements) Auto Air Vent -20mm (Min.: 1nos.OR as per actual site requirements) Providing and fixing C.P. brass bib cock of approved quality conforming to IS:8931 15 mm nominal bore (Min.: 1nos.OR as per actual site requirements) Dial Type Temprature Gauge 100mm dia (0-150deg) (Min.: 1nos.OR as per actual site requirements) Control Panel / ACDB for Electrical Heater including required switchgear like DP MCB incommer & DP MCB outgoing of suitable ratings for each 3KW Heater. Housed in Poly Carbonate (IP65) Enclosure, Complete with wiring up to heater in PVC Conduit. Electrical Wiring for incoming to ACDB : Wiring for circuit/ submain wiring alongwith earth wire with the following sizes of FRLS PVC insulated copper conductor, single core cable in surface/ recessed medium class PVC conduit as required. 2 X 6 sq. mm + 1 X 6 sq. mm earth wire (Min.: 15mtrs OR as per actual site requirements)
