41 -- TWO-250 TON HELICAL ROTORY LIQUID CHILLERS-WATER COOLED

Notice Date

August 17, 2001

Contracting Office

National Institute for Occupational Safety and Health, PO Box 6495, Cincinnati, OH 45206

ZIP Code

45206

Solicitation Number

RFQ2001-Q-05003

Response Due

September 12, 2001

Point of Contact

Phyllis Schweickart, 513/533-8185

E-Mail Address

Centers for Disease Control and Prevention/NIOSH (pjs2@cdc.gov)

Description

This is a combined synopsis/solicitation for commercial items prepared in accordance with the format in Subpart 12.6, as supplemented with additional information included in this notice. This announcement constitutes the only solicitation; quotations are being requested and a written solicitation will not be issued. This solicitation is issued as Request for Quotations No. 2001-Q-05003. This procurement is being issued unrestricted. The standard Industrial Classification is 333415 with a size standard of 75 employees. The National Institute for Occupational Safety and Health located at 4676 Columbia Parkway,Cincinnati,Ohio has a requirement for the following equipment: Two 250 Ton Helical Rotory Liquid Chillers Water Cooled. The following equipment characteristics are required; 134a Refrigerant Charge, Factory Insulation, Refrigerant Isolation Valves, 3 Pass Evaporator, .64 KW/ton efficiency or better full load, .57 KW/ton or better IPLV, UL listed, 2 Pass Condenser, 150 psi Evaporator Water Pressure, 150 psi Condenser Water Pressure, 200 Volt/60Hz/3 Phase, Solid State Starter NEMA Enclosed, Non-Fused Disconnect -Lockable, Under/Over Voltage protection, 592 or better rated load amperage unit mounted starter, Condenser tubes- enhanced fin copper, 83 dBA sound pressure level or lower. EVAPORATOR CONDENSER Designed, tested and stamped in accordance with ASME Code for refrigerant side working side pressure of 200psig or greater, All tube sheets will be carbon steel, Tubes will be individually replaceable, Tubes will be externally finned, internally enhanced seamless copper with lands at all tube sheets, Tubes will be mechanically fastened to tube supports. Design entering water temperature 42 degree F Evaporator, Design leaving water temperature 52 degrees F Evaporator, Design water flow rate 600 gpm Evaporator Maximum pressure drop 25 ft Evaporator, Design entering water temperature 85 degree F Condenser, Design leaving water temperature 95 degree F Condenser, Design water flow rate 750 gpm Condenser, Maximum pressure drop 25 ft Condenser. Microprocessor-Based Unit Control Panel -- Monitors and controls operation. Include associated sensors, actuators, relays and switches, Chilled water reset for energy savings during part load operation, Standard electrical demand limiting, Diagnostic and operating points including chiller current draw ,condenser pressure, and evaporator pressure. The unit will be furnished complete with a digital control system in a lockable enclosure, factory mounted, wired and tested. The control center will include a minimum 40 character alphanumeric display showing all system parameters in English Digital programming of essential setpoints through a color coded tactile-feel keypad will include, leaving chilled water temperature, percent current limit, pull down demand limiting, and remote reset temperature range. All safety and cycle shutdowns will be enunciated through the alphanumeric display and consist of day, time ,cause of shutdown, and type of restart required,. Safety shutdown(manual restart) will include high condenser refrigerant pressure, low evaporator pressure, low evaporator-condenser differential pressure, high oil pressure, low oil pressure, high oil temperature, motor overload, and sensor malfunction. Cycling (automatic restart) shutdowns will include low water temperature, cooler/condenser water flow interruption ,power fault (loss of power, low voltage) and anti-recycle. System operating information will include, return/leaving chilled water temperatures, return/leaving condenser water temperatures, evaporator/condenser refrigerant pressures, differential oil pressure, percent motor current, evaporator/condenser saturation temperatures, compressor discharge temperature, oil temperature, operating hours and number of compressor starts. Security access will be provided to prevent unauthorized changing of setpoints, and to select local or remote control of the chiller, and to allow manual operation of the pre-rotation vanes and oil pump. Control center will be able to interface with the building automation system (Facilitator) to provide ,remote chiller startup, reset of chilled water temperature, demand limit ,and chiller fault(shutdown on a safety requiring reset). Flow Switch: Provide for evaporator flow for safe operation and freeze protection. START UP AND OPERATOR TRAINING A factory trained field service representative will supervise final leak testing, charging, and initial startup, and conduct concurrent operator instruction. Minimum of 16 hours training required Submit six (6) copies of operations and maintenance manuals. Manuals will be bound with index and tabs and include, equipment submittals, Equipment Performance Curves or Capacity Tables, and Operating and Maintenance Instruction Sheet with exploded parts list. Manuals to be completely marked to indicate the model number or part number for the unit. General Conditions Include cost of shipping, unloading units at facility, and rigging into building and setting in place the units. Site visits to inspect the conditions may be scheduled by contacting David Mersch at 513-533-8301. Government will be responsible for all door removals and repairs to building associated with rigging. Government is responsible for pad preparation for units. Performance will be certified in accordance with ARI Standard 550/590.-1998 by the factory and witnessed by the government engineer or his designee at contractors cost. Chiller will be tested at three operating points, randomly chosen by the government engineer, one week prior to test. No tolerances such as that normally allowed by ARI 550/590 on efficiencies or capacities will be accepted. Chiller manufacturer will repair or replace equipment at no cost to the government, until equipment is certified by ARI test procedures to meet the performance indicated by the manufacturer. Chiller manufacture will provide one year complete parts and labor warranty on entire chiller and 5 years parts and labor on motor and compressor. The warranty period will go into effect from date of startup. Quotes are due by 4:30 P.M. EST., 09/12/01. You may fax your quote to the following number; 513/533-8283, Attention Phyllis Schweickart. All responsible sources may submit a written proposal which, if received timely, will be considered by the agency. Simplified Acquisition Procedures will be utilized for this purchase.

Record

Loren Data Corp. 20010821/41SOL001.HTM (W-229 SN50V3A9)