Change Order No. 1 - PW Service Center Roofing Proj No R124-032B - Slatile Roofing

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• Furnish and install all required line voltage to connect the new furnaces to the existing electrical circuits. • Furnish and install all required line voltage to connect the new condensers to the existing electrical whips/circuits. • Furnish and install one (1) Carrier low voltage twinning kit (#AGATWNDTE0IA) to join the operation of the two furnaces, matching the operation and sequencing of the existing systems. • Reconnect all applicable low voltage wiring to the new furnaces and condensers. o Existing thermostats will be reused. • Pressure test the existing refrigerant piping with Nitrogen to a minimum of 350 PSI for atleast 24 hours to ensure no leaks are present. o Our pricing is based on reusing the existing refrigerant piping. The piping will be pressure tested and checked to ensure no leaks are present. o We have verified with Carrier that the existing refrigerant piping sizes will work for the new equipment. • Flush the existing refrigerant piping with Nu-Calgon RX11 refrigerant line flush and Nitrogen to ensure all impurities including debris, oils, moisture and other non-condensables have been removed from the system. • Furnish and install Type "L" OXY/ACR nitogenized (cleaned and capped) copper with cleaned and bagged fittings to reconnect the existing refrigerant piping to the new coils and condensers. o Includes a new filter drier for each condensing unit. o All fittings will be brazed with 15% silver brazing alloy. • Furnish and install %" thick Armaflex rubber insulation on all new interior refrigeration suction piping. o Insulation work performed by Valley Insulating Co. of Mishawaka. • Furnish and install %" thick Armaflex rubber insulation on all new and existing exterior refrigerant suction piping associated with these two condensing units. o Insulation work performed by Valley Insulating Co. of Mishawaka. o Does not include reinsulating the exterior refrigerant suction piping associated with the other, existing condensing units. The insulation on these lines is rotten and has fallen off. The lack of insulation greatly reduces the efficiency of the refrigeration systems. We would suggest that while the insulator is on site, they provide a price for your consideration to reinsulate these other existing lines. • Pressure test the completed refrigerant system to a minimum of 350 PSI to ensure no leaks are present. • Triple evacuate each system to a final standing vacuum of 250 microns or less to ensure a clean, tight system with no debris, moisture or other non-condensables. • Charge each system with new, virgin, R-410A refrigerant in accordance with the manufacturer's specifications and charging instructions. • Provide documented start-up of the new furnace and A/C systems in accordance with the manufacturer's requirements. • Includes clean-up and demobilization for our scope of work. • Includes all applicable permits with the City of South Bend Building Department for our scope of work. • Includes a full one (1) year labor and material warranty on all Edward J. White, Inc. furnished and installed material and equipment associated with this project. o The new condensing units are furnished with a one (1) year parts and five (5) year compressor parts warranty. The new furnaces are furnished with a one (1) year parts and twenty (20) year heat exchanger parts warranty. We will perform the work as described above for the sum of Forty -Nine Thousand Seven Hundred Thirty -Four and 00/100 Dollars ($49,734.00). Does not include sales tax or work associated with other HVAC systems on site. All material is currently in stock and available in approximately 1 week from date of order. Our proposal must be accepted within 14 days of this quotation, otherwise, our pricing is null and void! We are backlogged for summer and need to complete this work prior to June 1(or as close to that as possible) to make this work with our schedule. We could start this work right away (within a few days of award).