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<br /> <br /> <br /> <br /> <br /> <br /> <br />2361 Qume Drive • San Jose, CA 95131 • 650 / 892-5014 Phone • 669 / 252-8801 Fax <br />Contractor’s License #120696 <br />Mechanical Services <br />650 / 892-5014 Cell <br />669 / 252-8801 Fax <br />2361 Qume Dr. <br />San Jose, CA 95131 <br /> <br />June 24, 2018 <br /> <br /> <br />Subject: City of San Leandro Library – Boiler Replacement Supplemental <br />Scope of Work <br /> <br /> <br />DETAILED SCOPE OF WORK FOR CITY OF SAN LEANDRO LIBRARY <br /> <br /> <br />During final boiler retrofit design it was discovered that the existing boiler minimum flow bypass was <br />originally installed incorrectly with the wrong components. It is not suitable for use with the new boilers <br />and must be removed and replaced. Per the owners request I am proposing a modulating minimum flow <br />bypass including a flow meter and motorized control valve. The owner has also asked me to include <br />relocation of the heating hot water pumps from the ceiling to the floor for serviceability and safety <br />purposes. The current pumps are an inline style and not suitable for base mounting. I have included new <br />base mounted pumps and associated trim. Below is a breakdown of all equipment and services provided: <br /> <br />Mechanical Scope of Work: <br />Existing bypass valve piping, bypass valve hardware, ceiling mounted hot water pumps, hot water <br />piping, electrical and insulation <br />· Demo <br />· Mobilize job site. <br />· Drain hot water loop and LOTO water / gas / electrical. <br />· Demo and haul off of existing bypass valves, piping, insulation and electrical. <br />· Demo and haul off existing heating hot water pumps, piping, insulation and electrical. <br /> <br />Replacement Pumps <br />· Furnish and install two (2) Bell and Gossett base mounted pumps: <br />· Furnish and install (2) suction diffusers (if required). <br />· Furnish and install new pump housekeeping pad. <br />· Furnish and install (1) flow meter. <br />· Furnish and install (1) motorized flow control valve. <br />· Furnish and install communication wiring between the flow meter and control valve (devices will <br />include local control. BAS integration is excluded but available as a separate job order). <br />· Furnish and install new pipe insulation. <br />· Furnish and install all necessary hot water pipe / hangers / fittings and insulation. <br /> <br />Electrical <br />· Furnish and install the following electrical: <br />· Furnish and install new electrical components to pumps / flow meter and control valve as <br />necessary. <br /> <br />Start Up <br />· Refill hot water loop and Start / Test / Balance of the pumps. <br />· Refill hot water loop.