2. HVAC a. Permits b. Isolate boiler water side and system water side via heat exchanger c. Furnish and install (1) plate heat exchanger with 4” flanged hot / cold side connections Heat exchanger to have minimal hot / cold side pressure drop (at selected operating conditions) Heat exchanger to be ASME construction with U1 stamp Heat exchanger cold side inlet – piped with strainer and bypass configuration allowing for strainer maintenance with no system downtime d. Furnish and install (1) 4” flanged air separator with strainer and high-capacity air vent e. Furnish and install (1) ASME diaphragm expansion tank f. Furnish and install PVF to connect hydronic components to existing butterfly valves and tees to isolate boiler water from system water g. Pipe insulation h. Flush boiler side piping w/ cleaning agent, flush with fresh water, refill w/ demineralized treated water i. Furnish and install (1) 17-gallon automatic water feeder j. System start-up, check, and test
