REP /MAINT AND SERVICING OF SOLAR WATER HEATING DEVICES, HOT AND COLD WATER STORAGE TANK, THERMAL INSULATION , SOLAR REFLECTOR (SOLAR PANEL) AND OTHER CONNECTED WKS SERVICES AT NAMS

M&L for dismantling solar water heating system of capacity 200/300/500 litres duly disconnecting water & electric connections for replacing the unserviceable spare parts, accessories, etc. and re-installing the system, connecting up and testing complete all as specified and as directed. Note: (i)Spares / components replaced will be measured and paid under respective items hereafter (ii) The taking down, opening up, reassembling, refixing, transportation for workshop and back and testing of system wherever required at the discretion of the Engr-in- Charge shall be carried out by the contractor at his own expenses for efficient functioning. Cost of these elements shall deemed to be included in the unit rate quoted by the contractor against respective item of this schedule. (iii)T & P and labour required for taking down of UNSV parts, transportation to workshop and refixing the same has been catered in this item. (iv) Rate quoted by the contractor shall deemed to be included for making good the worn out/ missing nuts bolts, washers, union socket, flanges, gasket and screws etc.

Supply and fixing in replacement electric heating element of ISI Marked 3 KW,230 Volt Copper sheathed suitable for thermostat housing of Solar water heater of capacity 200/400/500 liter as per site requirement complete all as specified and directed by Engr-in-charge.

Supply and fixing in replacement thermostat switch for Solar water heater of 200/400/500 litres capacity complete all as specified and directed by Engr-in-charge.

Material and Labour for cleaning by descaling chemical and flushing solar water storage tank of size 200/300/500 LPD, and hot water pipe cleaning with brush and drain out complete sludge / sand diposited in the hot water tank and connecting after complete cleaning up to the entire satisfaction, complete all as specified and as directed.

Supply and fixing in replacement of temperature gauge 0 to 120 degree Centigrade 8" long for 200/400/500 litres capacity water heater.

S&F in replacement of existing Flat Plate Collector (FPC), ISI marked, size 1860 x 1240 x 100 mm suitable for Solar Water Heating System complete with copper absorber plate having selective coating, copper riser and header tubes, 4 mm thick toughened low iron solar glass, aluminium frame, 50 mm thick resin bonded glass wool/mineral wool insulation, EPDM gasket, silicon sealant and all other accessories, complete all as specified and directed.

S&F in replacement of existing Solar Water Storage Tank of 300 litres capacity, ISI marked, non-pressurised vertical cylindrical type complete with SS 304 inner tank, outer metallic body, minimum 50 mm thick PUF insulation, electrical heating element with thermostat, sacrificial magnesium anode, inlet, outlet, overflow and drain connections, temperature gauge and all other accessories, complete all as specified and directed

S&F in replacement of existing Solar Water Storage Tank of 500 litres capacity, ISI marked, non-pressurised vertical cylindrical type complete with SS 304 inner tank, outer metallic body, minimum 50 mm thick PUF insulation, electrical heating element with thermostat, sacrificial magnesium anode, inlet, outlet, overflow and drain connections, temperature gauge and all other accessories, complete all as specified and directed.

Supply & Fixing in repair for GI tubing 25 mm dia nominal bore medium grade, ISI marked including connection with existing water supply line & all fittings(such as Tee, Band, union) to walls or laid under floors, complete all as specified and directed

Supply & Fixing in repair for GI tubing 20 mm dia nominal bore medium grade, ISI marked including connection with existing water supply line & all fittings(such as Tee,Band,union) to walls or laid under floors, complete all as specified and directed