Installation Guide

001Ͳ4272  AP18531(10/16)

WaterRecirculationPipingDiagram(withDedicatedReturnLine)

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NOTICE:Toconserveenergyandminimizeheatloss,insulationofhotwaterlinesisrecommended.

Linesshouldbecleanedandflushedbeforeinstallingpump.DONOTenergizepump untilproperlyinstalledand the

systemischeckedforleakandco mpletelyfilled.Pumpshouldbefloodedwithwaterbefore

itisstarted.

CAUTION:Avoidrunningcirculatorpumpdryasthiswilldamagethecirculatorpump.

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RheemPartNumber PumpConnection

Size

Motor

Voltage/Frequency/Phase RPM HP

AP18403 ½”maleNPT 115VAC/60Hz/1 3250 1/25

MaximumAllowableEquivalentPipeLength*

PipeDiameter(CopperPipe) 3/4” ½”

Maximumallowableequivalent

pipelength

400ft. 100ft.

*Equivalentpipelengthincludeshotwaterline,dedicatedreturnlineandallfittings.

PAGE 1
Water Recirculation Piping Diagram (with Dedicated Return Line) Rheem Part Number AP18403 Pump Connection Size ½” male NPT Motor Voltage/Frequency/Phase 115VAC/60Hz/1 RPM HP 3250 1/25 Maximum Allowable Equivalent Pipe Length* Pipe Diameter (Copper Pipe) 3/4” ½” Maximum allowable equivalent 400 ft. 100 ft. pipe length *Equivalent pipe length includes hot water line, dedicated return line and all fittings.
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Water Recirculation Piping Diagram (Under Sink Application) Pump can be installed under sink (furthest fixture) for retrofit applications that does not have dedicated return lines. This can be done by using appropriate fittings (not provided in this kit). CAUTION: Warm water may be present in cold water fixtures and cold water line during pump operation and short period thereafter, when using cold water line as a return line.