supply of air conditioner machine supply, installation, testing and commissioning of air-conditioning machines at different location of the west bengal state co-operative bank ltd. , equipment supply part , supply of approved make normal 3-star hi wall split of the following tonagemake options :: bluestar / hitachi / daikin / mitshubishi , hi wall type ac unit 2.0 tr normal capacity , hi wall type ac unit 1.5 tr normal capacity , hi wall type indoor unit 1.0 tr normal capacity make options , installation part , installation, testing & commissioning of normal hi wall split of the following tonage , hi wall type ac unit 2.0 tr normal capacity , hi wall type ac unit 1.5 tr normal capacity , hi wall type indoor unit 1.0 tr normal capacity , refrigerant piping , supply, installation, testing and commissioning of copper refrigerant piping for the above indoor and outdoor units copper piping shall be properly supported and it shall include the cost of all the fitting, insulation and all required fittings, joints etc. as per drawings of the following sizes.the insulation shall be 19/13mm thick closed cell nitrile rubber tubular insulation. nominal diameters of pipes in mm as indicated below. , for hi wall split ac (assuming 5 rmt per unit) , supply, installation, testing and commissioning of drain pipes with 9/6 mm nitrile rubber insulations complete with supports as per drawings and specifications of below sizes , 5/8 inch , 3/8 inch , 1 1/4 inch , 1/2 inch , supply, installation, testing & commissioning of refrigerant for the above unit with 2.5 sq mm x 3 core flexible cable , lifting shifting of indoor & outdoor units , odu structure , less: buyback of old machine