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CHAPTER 3 - PIPING DIAGRAMSNEAR BOILER PIPING FOR ALPINE BOILERSTo System<strong>Heating</strong>CirculatorsTo SystemSystemZoneValvesOPTIONAL ZONE VALVECONTROLLED SYSTEMNo further apart than fourpipe diameters (or 12"),whichever is smaller.At least 18" ofstraight pipe forConventional AirScoopKeep this distanceas short as practicalIndirectCirculator<strong>Heating</strong>SystemCirculatorBoiler LoopCirculatorIndirect DomesticWater Heater(IWH)From System61
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