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SYSTEM PIPING ARRANGEMENT ALTERNATE NEAR BOILER PIPING
> DIAPHRAGM EXPANSION TANK MOUNTED OFF THE BOILER
> CIRCULATOR ON SUPPLY PIPING PUMPS AWAY FROM EXPANSION TANK
> PER THIS MANUAL, USE OPTION #2 IN FILLING THE SYSTEM WITH WATER
> THIS PIPING ARRANGEMENT CAN BE USED WITH ZONE VALVES OR ZONE
CIRCULATORS