o Replacing existing boiler(s) and hot water pump(s) by providing and installing new sealedcombustion high efficiency boiler(s) and hot water pump(s) necessary to improve heating system efficiency within the buildings identified in Exhibit B. Existing Equipment Schedule - Boilers and Hot Water Pumps and accompanying Basis of Design (BoD) as illustrated in: Exhibit C. – Basis of Design (BoD) Equipment Schedule – Boilers and Hot Water Pumps o In the replacement of equipment, Subcontractor shall ensure that new equipment installed meets the existing performance characteristics illustrated in Exhibit B unless otherwise specified: Input capacities Flow rate (GPM) Pump head (Ft) Electrical characteristics o Subcontractor shall perform the following pre-installation activities to verify existing system characteristics: Testing, adjusting, balancing (TAB) with accompanying report to validate hot water pump(s) design characteristics/performance (e.g. pump head/pressure, GPM, Motor RPM, Motor Voltage/Amps/Phasing) and validate that all nameplate information on existing equipment accurately matches the information provided in Exhibit B prior to submittals and/or ordering equipment. In the following locations where Ethylene glycol is currently used in the heating system testing of concentration and quality of Ethylene glycol in the heating system with accompanying report. Ethylene glycol used directly in entire heating system: Lottie Schmidt Elementary School (Qty 2 Boilers) Lighthouse Elementary School (Qty 2 (Mezzanine) Boilers) Middle School North (Qty 4 Boilers) Middle School South (Qty 2 Boilers) Ethylene glycol used in secondary heating system, heated through a plate & frame heat exchanger: Ashley Elementary School Naldrett Elementary School o Subcontractor shall obtain all necessary applicable permits and approvals prior to commencement of scope of work. o Subcontractor shall provide all necessary labor and materials for complete implementation of boiler(s) and hot water pump(s) system and proper disposal of removed equipment (not using owner's dumpsters and/or owner's refuse containers). o Unless otherwise specified, point of new connection to be existing isolation valves for boiler(s) and hot water pump(s). o Subcontractor shall provide and receive submittal approval prior to ordering any materials associated with this scope of work. All work shall be performed in accordance with manufacturer specifications, state and local codes, and industry best practices. Products shall be installed only by qualified personnel experienced in the installation of boiler and pump systems
