Replace Central Heating System

Provide two new boilers and associated primary heating water system equipment, including pumps, valves, controls, and piping. Connect into existing secondary heating water system with common piping. Connect existing heating return and supply mains together to create secondary loop with common header for connection of primary heating system. Remove existing steam and condensate piping and equipment. Remove old and provide new expansion tank, piping, valves, and fittings.

Division 02 -	Existing Conditions, Demolition, Selective Demolition.
Division 07 -	Thermal and Moisture Protection, Firestopping.
Division 22 -	Plumbing, Common Work Results for Plumbing, Plumbing Insulation, Plumbing Piping, Plumbing Equipment.
Division 23 -	Heating, Ventilating, and Air Conditioning (HVAC), Instrumentation and Control for HVAC, HVAC Air Distribution, Central HVAC Equipment.
Division 26 -	Electrical, Common Work Results for Electrical, Low-Voltage Electrical Power Conductors and Cables, Grounding and Bonding for Electrical Systems, Raceway and Boxes for Electrical Systems, Low-Voltage Transformers, Switchboards and Panelboards, Low-Voltage Distribution Equipment, Wiring Devices, Low-Voltage Circuit Protective Devices, Fuses, Low-Voltage Controllers, Enclosed Controllers, Across-the-Line Motor Controllers.
Division 28 -	Electronic Safety and Security, Common Work Results for Electronic Safety and Security, Fire Detection and Alarm, Fire Alarm Initiating Devices.