INSTALLATION AND OPERATING INSTRUCTIONS Advanced Design Boiler 751, 1001, 1501

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Fig. 8: Single Boiler - Low Temperature Application (Heat Pump) Primary/Secondary Piping
DOMESTIC HOT WATER
PIPING
When designing the water piping system for domestic
water applications, water hardness should be consid-
ered. Table F indicates the suggested flow rates for
Table F: Domestic Water Heating Boiler Flow Rate Requirements
ΔT=Temperature rise in °F
GPM=Gallons per minute
See Table D for Pressure Drop
soft, medium and hard water. Hardness is specified as
grains per gallon.