MINNESOTA STATE SECTION ADVERTISEMENT FOR BIDS

Transcription

1 MINNESOTA STATE SECTION ADVERTISEMENT FOR BIDS Sealed Bids for: will be received by: Ridgewater College Commercial Chiller Purchase Ridgewater College Willmar Campus th Ave. N.W Willmar, Minnesota] Kip R. Oveson Ridgewater College Willmar Campus Willmar, MN Until 2:00pm, local time, January 25, 2019 at which time the bids will be opened and publicly read aloud. Project Scope: Ridgewater College is accepting bids for a packaged 200-Ton chiller unit. This unit will replace a 30-year-old 200-Ton split system type chiller that services the entire East side of the Willmar Campus. Technical specifications of the chiller and a drawing of the area that this unit will be placed in are attached. These include a schedule for production and delivery. Refer to the schedule for information pertaining to liquidated damages. For those who would like to see the site and the existing chiller, an optional Pre-Bid Meeting will be held at 10:00 a.m., on Thursday January 17, 2019, in Room F-104 (Small Outreach), Fine Arts Building, Ridgewater College, Willmar Campus. Use Parking Lot C-East Entrance Door 60. Bidding Documents are prepared by the Project Engineer of Record, Ericksen Ellison and Associates, nd St. NW, Suite 105, New Brighton, MN, (651) Questions should be sent by , jart@eeaengineers.com, no later than January 22 at 2:00 PM, local time. Answers to questions will be addressed by addendum. Addenda will not be issued after January 23 rd. Interested parties may view the Bidding Documents at no cost on the website: END OF SECTION DIV Page 1 of 1 11/9/17

2 PART 1 - GENERAL OVERVIEW A. Extent of water chiller products and services is indicated by requirements of this Section and Section , Advertisement for Bids. B. The Owner - Ridgewater College, through Minnesota State (formerly, Minnesota State Colleges and Universities ) - will be replacing a water chiller this year at the Willmar Campus. The address of the College is th Ave NW, Willmar, MN The existing chiller is a nominal 200-Ton split unit, consisting of an indoor evaporator and outdoor air-cooled compressor/condenser unit. This chiller generates chilled water for air conditioning of buildings on the eastern part of the Campus. The new replacement chiller will be a nominal 200-Ton packaged outdoor air-cooled rotary screw type chiller. In addition to meeting the present air conditioning demand of connected buildings, a 200-Ton chiller is sized for future extension to more air handling units. Construction is expected to take place during the summer of C. The Schedule: Refer to the schedule, below. The shop drawing process would take place in February, and delivery of the chiller would be scheduled for Mid-May, as noted below. The Chiller Supplier is to include a proposed schedule with your bid. Failure to include the committed lead time for the equipment will cause the bid to be disqualified. CHILLER SCHEDULE Date Activity January 31, 2019 Purchase Order Issued for the chiller by the Owner February 1 to February 8 Shop drawing are prepared by the Vendor and ed to EEA February 8 to February 15 Review by EEA and order placed by the Owner May 17, 2019 Chiller arrival on-site May 17 to May 28 Chiller installation and related construction activities May 28 to June 6 Chiller start-up and testing Note 1: It is preferred that the chiller arrive at the site on or before this date. If the Vendor believes that more time is required, then an alternative date shall be stated clearly on the proposal. If the chiller arrived after the agreed-upon date in the proposal, then the chiller Manufacturer shall pay liquidated damages in the amount of $250 per day, for each day that the chiller is late. C. This Specification Section is intended to be a pre-purchase specification for the chiller and associated services. The equipment will be assigned by the Owner to a selected building contractor, under a separate contract for replacement of a chiller, chilled water pumps, and automatic controls. The project is currently in the design phase, and the contract for construction has not yet been awarded DESCRIPTION OF WORK A. The supplier of the chiller will need to carefully coordinate with the Owner s building contractor for the remaining work. The Manufacturer (the chiller manufacturer/vendor, including their representatives and agents responsible for ordering, manufacture, delivery, instruction, and services of the chillers, hereafter named Manufacturer ), shall provide products and services per these specifications. It is the Owner s intent to award a purchase order to the selected chiller supplier by January 31, B. The chiller supplier shall submit shop drawings by February 8, 2019, Pre-Purchase of Chiller Section Page 1 of 5

3 C. Once ordered, the manufacturer to provide information to and coordinate with the selected Contractor for the remaining construction work. D. The supplier shall deliver the chiller to the project site and coordinate all set-up of the equipment. The chiller will be received by the Contractor. The Contractor will make connections from the chiller to adjacent building services. E. The manufacturer may submit an invoice for the equipment once it has been delivered to the site and accepted by the Owner and Engineer. F. The supplier shall return to the site and assist with start-up, etc. (Refer to Article 04.01) PROPOSAL/QUOTATION A. Refer to the Advertisement for Bids. The bids shall be ed to the Owner, as instructed. The proposal shall include separate prices for each of the following: 1. One (1) packaged outdoor air-cooled, rotary screw type chiller, as scheduled in these specifications. 2. Services of qualified Manufacturer representatives: a. Preparation of shop drawing submittals b. Supervision of the chiller installation c. Assistance with start-up and testing of the chiller d. Owner instruction on the operation of the chiller e. Consulting during the warranty period, as needed to help correct problems SUBMITTALS A. Product Data: Submit manufacturer's technical product data, including rated capacities of selected model clearly indicated, weights (shipping, installed and operating), furnished specialties and accessories; and installation and start-up instructions. B. Wiring Diagrams: Submit ladder-type wiring diagrams for power and control wiring required for final installation of water chiller units and controls. Clearly differentiate between portions of wiring that are factory installed and portions to be field installed. C. Maintenance Data: Submit maintenance data and parts list for each water chiller unit, control and accessory; including "troubleshooting" maintenance guide. Include this data and product data in maintenance manual; in accordance with requirements of Division 1. D. Compressor Warranty: Submit year extended warranty certificate PRODUCT DELIVERY, STORAGE AND HANDLING A. The Manufacturer shall include delivery of the chillers and associated equipment to the project site, where it will be assigned to the Building Contractor by the Owner. The equipment shall be received at a designated location, and the Building Contractor will then assume responsibility for handling and storage of the chiller prior to the installation. PART 2 - PRODUCTS Section Page 2 of 5 Pre-Purchase of Chiller 6753

4 02.01 AIR COOLED WATER CHILLER A. General: The unit shall be completely charged with refrigerant and oil and complete with all accessories, ready for installation and shall conform to the conditions. Refer to schedule in this Section for capacities and other details. B. Frame and Casing: Units shall be constructed of a 12-gauge, welded steel frame with 14- and 16-gauge steel panels and access doors finished with two (2) coats, corrosion resistant alkyd enamel. Units shall be shipped with a full operating charge of refrigerant and with an oil charge. Provide hail guard to protect condenser fins. C. Compressor and Motor: The rotary screw compressor shall be semi-hermetic, direct drive, 3600 rpm, with capacity control slide valve, rolling element bearings, differential refrigerant pressure oil pump and oil heater. The motor is a suction gas cooled, hermetically sealed, two-pole squirrel cage induction motor. D. Evaporator: Direct expansion, shell-and-tube design evaporator having seamless copper tubes roller expanded into the tube sheets, dual refrigerant circuit built to ASME Code for unfired pressure vessel, ASME refrigerant side and 150 psig working pressure on the water side. Insulation: 3/4 expanded polyvinyl chloride (K =.25). Heater cables shall be provided to protect the evaporator to ambient of - 20 F. Provide insulation for high humidity. E. Condenser: 1. Direct drive, vertical condenser fans shall be statically and dynamically balanced. Low ambient units shall have two (2) variable speeds, permanent split capacitor, single phase fan motors. 2. Fan motors shall be 3-phase with permanently lubricated ball bearings and built-in thermal overload protection. 3. Upright, air-cooled condenser coils having three (3) row configurated aluminum fin secondary surface mechanically bonded to primary surface of 3/8" od copper tubing, sub-cooling circuit with liquid accumulator, and factory tested under water to 425 psig air pressure. F. Control Panel: Weather tight control panel having a hinged outer door for access to control circuit fusing. Electrical and refrigerant sections shall be separate. G. Capacity Modulation: Infinitesimal capacity modulation shall be controlled in response to the entering water temperature. H. Head Pressure Control: Head pressure control shall be accomplished by fan cycling plus variable speed fan operation. I. Accessories: Oil pressure gauge, suction gauge, and discharge pressure gauge for each compressor. J. Flow Switch: Provide a flow switch proving for each chiller to be field installed by the Contractor. K. Controls: In addition to the unit controls, furnished as part of the product, the chiller shall be capable of receiving input from the building automation system (BAS) for enable/disable control of the chiller. The chiller shall also be capable of sending information to the building automation system for monitoring of its operation. Provide BACnet control interface. The existing building automation system consists of products by Schneider Electric. Pre-Purchase of Chiller Section Page 3 of 5

5 L. Refrigerant Piping: Each compressor shall have independent refrigerant circuits including liquid line shutoff valve, filter drier (replaceable core type), sight glass/moisture indicator, liquid line solenoid valve, thermal expansion valve, and charging connection. M. Factory Performance Test: Each unit shall be individually performance tested at full and partial load conditions. With the unit in operation, all controls shall be properly calibrated and adjusted. After performance testing, the unit shall be thoroughly leak tested with high sensitivity electronic leak detector. N. Starters/Circuit Breakers/Disconnect Switch: Individual factory installed wye delta closed transition starters and breakers shall provide power disconnect on dual compressor units. Circuit breakers shall not take the place of overloads. Provide a dual point connection for electrical power and main disconnect switches. O. Coil Guards: Factory installed coil guards shall protect the condenser coils against damage from rocks or any airborne debris. Guards shall be removable for condenser coil cleaning. P. The Chiller shall be able to operate with an ambient temperature of 40F or higher. Q. Equipment Schedule: Preapproved Manufacturers, Models, and efficiencies: Carrier - Model Number 30XV200-VS-HT - IPLV EER; AHRI EER Smardt - Model Number AD065.2EG07.F3AKHA.A010AA.E10; IPLV 22.6 EER; AHRI 7.6 EER Trane - Model Number ACRA-200; IPLV EER; AHRI EER York - Model Number YVAA0218CRV46BAVNXX; IPLV 20.1 EER; AHRI EER Refrigerant HFC-134a Nominal Size 200 Tons Actual Capacity at Scheduled Conditions 200 Tons Chilled Water Flow Rate (Design Conditions) 480 GPM Percentage of Glycol Anti-Freeze 40% (60% water) Entering Water Temperature 54 F Leaving Water Temperature 44 F Unit Voltage 208/60/3 Notes: 1) Carrier chiller model listed shall be provided with Low Sound Kit and VFD Screw Compressor. 2) Smardt chiller model listed shall be provided with Oil Free Centrifugal Dan Foss Turbocor compressor, single point power connection, and high-efficiency enhanced tubes. 3) York chiller model listed shall be provided with Low Sound Kit, Low Sound Fans, and Variable Speed Control. PART 3 - EXECUTION INSPECTION A. Examine areas and conditions under which water chiller units are to be installed. Do not proceed with work until any unsatisfactory conditions have been corrected in manner acceptable to installer. Section Page 4 of 5 Pre-Purchase of Chiller 6753

6 03.02 INSTALLATION OF WATER CHILLER UNITS BY THE BUILDING CONTRACTOR A. Under work of a separate contract for construction, the Building Contractor will be required to perform the following work, in conjunction with the installation of the chiller and accessories: 1. Install water chiller in accordance with manufacturer s installation instructions. Install units on an 8 thick concrete chiller pad. 2. Verify that the installation is as indicated and specified. Verify that electrical wiring installation complies with the Manufacturer s submittal and installation requirements in Division 26- Electrical sections. 3. Inform the Manufacturer when the chillers and controls are ready for review, start-up and testing by the Manufacturer. PART 4 - FIELD SERVICE SERVICES TO BE PROVIDED BY THE MANUFACTURER A. The manufacturer shall furnish the service of a factory trained representative to perform the following: 1. Meet with and advise Contractor on rigging and installation. 2. Advise on and assist with wiring and control problems. 3. Start up chiller and supervise start-up of chilled water system. 4. Train operators and provide retraining as required during the first year. Provide a minimum of four (4) hours training for equipment. 5. Provide written report to Owner, Architect, Engineer, and Contractor upon completion of items 1-4 above. 6. Provide consultation with the Owner representative during the warranty period as needed to help correct problems with the chiller. B. The manufacturer shall provide an extended warranty for the chiller compressors for a total of five (5) years (parts and labor) commencing with the first operating season. 1. The warranty shall be furnished with the Shop Drawings. PART 5 WARRANTY A. The manufacturer shall provide an extended warranty for the chiller compressors for a total of five (5) years (parts and labor) commencing with the first operating season. 1. The warranty shall be furnished with the Shop Drawings. END OF SECTION Pre-Purchase of Chiller Section Page 5 of 5