DVA Medical Center (90C), 800 Poly Place, Building No. 4, Brooklyn, NY 11209-7104

Z -- DRINKING WATER CHILLER REPLACEMENT SOL IFB 527-31-95 DUE 062895 POC Contact Point, MARK HELLER, (718)630-3553, Contracting Officer, MARK HELLER, (718)630-3553 Furnish all labor, materials, equipment, transportation and supervision necessary to perform and complete project No. SL-95-29-BK entitled ''Drinking Water Chiller Replacement'' at the DVA Medical Center, 800 Poly Place, Brooklyn, New York as required by specifications and drawings. A) Replace one (1) drinking water chiller (filtrine) unit supporting the north tower of Building No. 1. Existing chiller unit is located in northeast basement of Building No. 1. The chiller is to have the capacity to cool 240 GPH from 80 degrees to 45 degrees. The cooling tank shall have storage capacity of 160 gallons and shall be constructed of stainless steel and tested for 125 # WP. Evaporator shall be mounted within the cooling tank and shall be constructed of cper pipe with a minimum wall thickness of .060''. The compressor is to be 7 1/2 HP field serviceable, semithermetic, and supplied with water cooled condenser and full controls for automatic operation including adjustable thermostat, freeze control, refrigerant dehydrator, sight glass, suction strainer, pump down solenoid valve, oil pressure switch and thermostatic expansion valve. B) The pump is to be 1/2 HP, bronze fitted, centrifugal type installed on rubber pads over a stainless steel condensation tray. Piping is to include dial thermometer on discharge line, manual bypass, valve, drain, air vent - all insulated with molded fiberglass. Unit is to be housed in a rust proofed and tank section to be insulated with at least 2'' of styrofoam. All controls and components are to be accessible through easily removable access panels. Chiller is to be wired for 208V 3 phase, charged with referigerant, ready for installation, and ED by a full one year manufacturers warranty on all components. The warranty shall cover cooling tank, evaporator, circulating pumps, condensing units and all electrical and refrigeration controls. C) Work is to include removal of existing chiller unit and disposal from the site. D) Install new chiller unit on existing concrete slab. repipe and reconnect to new chiller unit. E) Install backflow preventer on emergency make-up water line. F) Replace existing filter banks with new filter banks model 10 TMX. G) The filter shall have a rated capacity of 10 GPM. Filter is to be equipped with cell to remove taste and odors. Cell shall be charged with not less than 3 lbs of highly activated carbon for each G.P.M. capacity. filter shall have separate replaceable element to remove rust, silt and other suspended matter. Each unit is to be designed for 125 # WP and equipped with piping and backwash and bypass valves. Provide 4 dozen spare filter elements. The filter sheet is rated at 5 microns (nominal). The external cell is to be shipped fully charged with F-13 activated carbon ready for immediate use. H) Provide dual pumps, dual compressors, complete redundency to insure chiller is never out of service. I) Re-insulate pipe and label lines to the new chiller units. J) The pump discharge pressure should be able to handle 17 floors. K) The new unit shall be M-160-RFCW manufactured by the Filtrine Manufacturing Co. or approved equal. L) the chiller unit dimensions must be 84''W X 26''D X 76''H. M) Remove all debris generated by this project from the job site. N) Field verify all dimensions and conditions prior to the start of work. O) Coordinate work with the VA Engineer and A/C foreman. Standard Industrial Classification Code is 1711, Plumbing, Heating and Air Conditioning. Solicitation to issue O/A May 29, 1995. Bid opening O/A June 28, 1995. Construction cost range is between $25,000 and $100,000. Completion time for project is 75 calendar Days. All requests for Bid packages must be made in writing. (0139)

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