supply, fixing and commissioning of 3.7 ton tower ac machines and 1.9 ton split ac machines at administrative building within nbu main campus , supply, fixing and commissioning of3.7 tr tower ac machines and 1.9tr split type ac machines at administrative building within the main campus of nbu. , dismantling the existing window / split type rac machine carefully from its original locationand covering this exsisting position by acp/eboard & including carying& deposited to section store as instructed by the eic , supplying and fixing of copper pipe (1/2 & 3/4 inch) including 3c x 2.5 cable with insulation tube and rapping tape for necessary connection of indoor unit to outdoor unit ac machine , supply & laying hard/soft drain piping work out of pvc/hdpe hard pipes of following size including fitting, accessories upto ground level. a) 19mm dia , supplying and fixing of 4c x 2.5 cable for necessary connection of indoor unit to power plug , supplying and fixing of copper pipe (3/8 & 5/8 inch) including 6c x 2.5 cable with insulation tube and rapping tape for necessary connection of indoor unit to outdoor unit ac machine , supply & fixing of 20/25a plug top with necesaary connection , supply and fitting the outdoor bracket including labour, tools, tackles, scaffoldong etc as required to complete the work in all respect withn the main campus of university of north bengal. , supply, installation and commissioning of single phase 230v, 50 hz a.csplittype room air conditioner1.9 tr capacityfitted with rotary/ reciprocating compressor and copper pipe with insulation (liquid & suction line), copper cooling coil, rated capacity 6.6kw, operating current (amps)- 8.2, volume of air (cfm)- 777 or above, eer (w/w)- 3.57 or higher, star rating – 2-3 rated energy efficient, refrigerant use - 410a, incl.remote etc. as required to complete the work in all respect within the main campus of university of north bengal. (make:mitsubishi electric or equivalent as approved by eic) , supply, installation and commissioning of 3(three) phase 440v, 50 hz a.ctower ac machine room air conditioner3.7 tr capacityfitted with scroll compressor and copper pipe with insulation (liquid & suction line), copper cooling coil, rated capacity 12.5kw, operating current (amps)- 5.7, volume of air (cfm)- 2700, , refrigerant use - 410a, type of ac- hybrid incl.remote etc. as required to complete the work in all respect within the main campus of university of north bengal. (make:mitsubishi electric or equivalent as approved by eic)