Renovation of an educational facility in Marion, Massachusetts. Completed plans call for the renovation of a educational facility.

Required for DCAMM contracts over $150,000, Highway Division contracts over $50,000. Removal, disposal of existing 250-ton air-cooled chiller, including refrigerant, electrical power and plumbing and provide and install a suitable 250-ton replacement chiller at Sippican Elementary School Bidder Questions Due: June 27, 2025 @ 10:00AM Email questions to: howardbarber@oldrochester.org This invitation includes contract obligations and the bid specifications for construction services to the existing running track. This invitation includes the instructions for submitting proposals. The bid specifications shall serve as the contractual terms by which the Old Rochester Regional School District intends to govern the relationship between itself and the selected bidder. Definition of Parties: Old Rochester Regional School District will hereinafter be referred to as the "Owner". Respondents to this Invitation shall be referred to as "Bidders". The Bidder to whom the contract is awarded shall be referred to as the "Contractor". GENERAL The contractor shall furnish all labor, materials, equipment, supervision, and services necessary for the proper replacement of the existing McQuay 250-ton Air-Cooled Screw Compressor Chiller with a compatible replacement supplied by the contractor. Removal and disposal of the existing chiller and material including refrigerant shall be included within this scope of work. The Contractor is responsible to restore or repair any damages to landscaping or appurtenances that may occur from the Work. Any repairs will be made to the Owner's satisfaction. Work must be completed in a continuous uninterrupted operation. The Contractor must use sufficient personnel and equipment to complete all necessary work in a minimum amount of time. Contractor will submit a construction schedule identifying key dates for deliveries and stages of the work. Contractor is responsible for the security of the work until final acceptance. Stored materials will be maintained in a neat and orderly fashion. It is the responsibility of the Contractor to protect the stored and staged materials. It is the Contractors responsibility to ensure the site is secured and safe during off hours and weekends SPECIFIC SCOPE OF WORK Intent of this project is to replace an existing 250 ton air-cooled liquid chiller with a similar new chiller installed in the existing chiller's location that is factory assembled, complete package and is turnkey and operates independently by supplying chilled water. Demolition of the existing chiller and its complete removal from the site is a requirement of the scope of work. Ancillary work includes disconnection and reconnection of the existing electrical feed to serve the new chiller, disconnection and reconnection of the existing chilled water piping to serve the new chiller, miscellaneous piping, fittings, couplings, and pipe insulation as required for a complete and operational system. The Contractor shall obtain an electrical permit (fee will be waived) and possess current and valid licenses and certifications applicable to this project. All work shall be completed in accordance with MA state and local building mechanical codes, NFPA and all other applicable state and federal codes. The Contractor shall specify the following product data: _ Manufacturer/Brand and complete model number _ Rated capacities _ Operating characteristics _ Furnished specialties and accessories _ VFD Compressors _ Material of chiller's frame _ Material of Condenser coil fins _ Manufacturer's computerized chiller selection data sheet _ Refrigerant and capacity of water chiller _ Chiller description (or link to manufacturer's description) _ Itemized list of each optional component/feature included _ Capable of supplying 45-degree F chilled water at full load operations at the design outdoor temp _ Remotely turning on/off unit by low voltage switch _ Specify the low to high range of starting and operating with outside air temperatures. _ AHRI-Certified Reference Number, nominal cooling capacity, and capacity range _ Full-load EER and EPLV (tested per AHRI550/590) Chiller shall meet all OSHA, NFPA, state & local codes using the existing equipment pad. Layout shall be in such a manner that maintenance & maintenance access panels are easily accessible. Intent of this project is to replace an existing 250 ton air-cooled liquid chiller with a similar new chiller installed in the existing chiller's location that is factory assembled, complete package and is turnkey and operates independently by supplying chilled water. Demolition of the existing chiller and its complete removal from the site is a requirement of the scope of work. Ancillary work includes disconnection and reconnection of the existing electrical feed to serve the new chiller, disconnection and reconnection of the existing chilled water piping to serve the new chiller, miscellaneous piping, fittings, couplings, and pipe insulation as required for a complete and operational system. The Contractor shall obtain an electrical permit (fee will be waived) and possess current and valid licenses and certifications applicable to this project. All work shall be completed in accordance with MA state and local building mechanical codes, NFPA and all other applicable state and federal codes. The Contractor shall specify the following product data: _ Manufacturer/Brand and complete model number 5 _ Rated capacities _ Operating characteristics _ Furnished specialties and accessories _ VFD Compressors _ Material of chiller's frame _ Material of Condenser coil fins _ Manufacturer's computerized chiller selection data sheet _ Refrigerant and capacity of water chiller _ Chiller description (or link to manufacturer's description) _ Itemized list of each optional component/feature included _ Capable of supplying 45-degree F chilled water at full load operations at the design outdoor temp _ Remotely turning on/off unit by low voltage switch _ Specify the low to high range of starting and operating with outside air temperatures. _ AHRI-Certified Reference Number, nominal cooling capacity, and capacity range _ Full-load EER and IPLV (tested per AHRI550/590) LOCATION SIZE FOR NEW AIR COOLED CHILLER: Chiller shall meet all OSHA, NFPA, state & local codes using the existing equipment pad. Layout shall be in such a manner that maintenance & maintenance access panels are easily accessible. The Contractor may propose one or more options to replace the existing enclosure if that may be advantageous to the Town. INSTALLATION OF NEW AIR COOLED CHILLER: A. Except as otherwise indicated, install chiller work including components and controls required for chiller operation in accordance with chiller manufacturer's instructions, and with recognized industry practices, to ensure that chiller equipment complies with requirements and serves intended purposes. B. Install Mid anchor chiller plumb and level. C. Install chiller on existing concrete base. Anchor chiller mounting frame to concrete base. Place and secure anchorage devices. Install anchor bolts to elevations required for proper attachment to supported equipment. Coordinate size and orientation of chiller pad with actual dimensions of chiller furnished; D. Vibration Isolation: Rubber pads with a minimum deflection of 0.10 inch. E. Maintain manufacturer's recommended clearances for service and maintenance. F. Charge chiller with refrigerant, if not factory charged, in the quantity recommended by chiller manufacturer. Pressure-test chiller refrigerant system for leakage in manner recommended by manufacturer. Bleed out non-condensable gases charged with refrigerant. G. Fill unit with oil as directed by manufacturer, if not factory installed. H. If applicable, install separate devices and auxiliary piping furnished by manufacturer but shipped loose. FIELD CONNECTIONS: A. Use flanged or grooved connections at chillers and re-connect existing chilled water piping supply and return to new chiller. Install to allow service and maintenance. B. Evaporator Connections: Connect inlet and outlet to evaporator with existing piping. Installing contractor shall shut off isolation valves and disconnect existing chilled water piping from existing chiller to be demolished and 6 re-connect existing chilled water piping to new chiller. Chiller and installed piping shall have the capability to be completed drained of water/glycol for winter shutdown. Recognizing that new chiller's piping connections might not match exactly with existing in size, location, or orientation, the installing contractor shall be responsible for furnishing and installing additional piping and fittings as necessary to make final connections in a complete, functioning, and workmanlike manner. MANUFACTURER'S FIELD STARTUP SERVICES: A. Startup Services: Provide factory-trained service representative, in the employ of the chiller manufacturer, to start chillers and to demonstrate and train Owner's maintenance personnel as specified below as a minimum: 1. Test and adjust chiller controls and safeties. Lubricate rotating parts. Verify that motor amperage conforms to manufacturer's data. 2. Verify proper motor rotation. 3. Inspect field-assembled components, equipment installation, and piping and electrical connections for proper assemblies, installations, and connections. 4. Include leak testing and refrigerant charging in scope of supervision by manufacturer's representative. 5. Include lubrication, including filling of reservoirs, and confirming that lubricant is of quantity and type recommended by manufacturer, in scope of supervision by manufacturer's representative. B. Complete installation and startup checks according to manufacturer's written instructions and check for the following items: 1. No physical damage to unit. 2. Unit is level. 3. Chiller vibration isolation and flexible pipe connections are installed. 4. Service clearances have been maintained. 5. Chilled-water pipes have been connected to correct ports. 6. Labels and safety instructions are clearly visible. 7. Direction of water flow decals on piping 8. Oil levels are as recommended by manufacturer. 9. Shipping skids, blocks, and straps are removed. 10. Refrigerant pressure relief is vented as specified herein. 11. Thermometers and pressure gages are installed. 12. Controls and safety interlocks are installed and connected. 13. Pumps are installed, connected, and operational. C. Start chiller and verify performance. Demonstrate operation to Owner. Operate chiller for run-in period as recommended by manufacturer. After suitable run-in period, check the following: 1. Check and record performance of chiller protection devices. 2. Check and record performance of chilled-water flow and low-temperature interlocks. 3. Check static deflection of vibration isolators, including deflection during chiller startup and shutdown. 4. Check refrigerant charge (to -20 degrees F at minimum). 5. Check bearing lubrication and oil levels. 6. Verify and record performance of water chiller protection devices. 7. Test and adjust controls and safeties. Replace damaged or malfunctioning controls and equipment. D. Prepare a written startup report that records result of tests and inspections. E. DOCUMENTS TO BE PROVIDED AT COMMISSIONING: Provide three (3) copies (two paper and one electronic) of maintenance manuals, startup manuals, and parts list. 7 MINIMUM QUALIFICATIONS: Contractors must have appropriate Massachusetts certifications and proven experience, be in business for at least 5 years, and employees with proper certifications who are compensated at the prevailing wages