4520--Replace Domestic Hot Water Heater B100 (Va-20-00040229)

The contractor is to replace (2) two heat exchangers and all associated controls, parts supplies and equipment. Work required to accomplish this will require providing a skid mounted heat exchanger package which includes all controls and tie-in points to the existing distribution system and include all valves, piping, traps, electrical connections and other parts and materials to provide a fully operational domestic hot water system. Once the units are installed and all connections are made the units will then be turned on and allowed to warm up. Once operational temperature is reached the units will be placed into operation. This includes putting at least 90 % load on the units for a minimum of one hour. The units will then be diagnosed for any problems or leaks. All control parameters on the control board will be scrolled through and analyzed to ensure they are all within accepted parameters. CONTRACT REQUIREMENTS Heat Exchanger Package and Specs (CLIN 0001) - All equipment will be replaced with approved OEM manufactured parts and equipment.

Division 23 -

Heating, Ventilating, and Air Conditioning (HVAC), Instrumentation and Control for HVAC, HVAC Air Distribution, Central HVAC Equipment.