Alpha2 15-55F Variable Speed Circulator Pump w/ IFC, 1/16 HP, 115V
Brand: Grundfos
Part#: 99163903
Model: Alpha2 15-55F
Alpha2 15-55F model is a cast iron variable speed circulator with AutoADAPT feature, designed for use in a variety of hydronic and radiant heating applications.
Note: this model replaces older Alpha model 59896877.

Cross-References:
  • Grundfos: UP15-10F, UP15-42F, UPS15-58FC
  • Taco: 005-F2-2, 007-F5, 008-F6, 00R-MSF, 0015-MSF3
  • B&G: NRF-22, NRF-9F/LW
  • Armstrong: Astro 230CI, Astro 250CI, Astro 20, Astro 25, Astro 30
  • WILO: Star S 16F, Star S 21F, Star S 21RFC, Stratos ECO 16 RFC.

Features:
  • New and improved version of Grundfos bestselling Alpha circulator
  • AutoADAPT feature allows the circulator to adapt to changes in the hydronic system to maximize energy savings
  • Push button allows to select between AutoADAPT, constant speed (3 settings - Hi/Med/Low) or contant pressure (3 settings) modes
  • Large LED display
  • Built-in check valve
  • Insulation jacket and (2) gaskets (O-rings) included
  • Permanent magnet motor technology with robust startup enables pump to restart indefinitely when rotor is blocked
  • Cast iron body for closed-loop heating applications
  • Standard flange accepts Grundfos GF15/26 and other brand flanges
  • Hardwire model
  • Made in the USA.

Technical Specifications:
  • Voltage: 115V
  • Amperage: 0.65A
  • Hertz: 60
  • Phase: 1
  • Watts: 5 - 45W (depending on mode selected)
  • Wiring: Hardwired
  • Temperature Range: 36°F - 230°F
  • Max Pressure: 150 psi
  • Flow range: 0 - 21 GPM
  • Head Range: 0 - 19 ft of head
  • Material: Cast Iron
  • Application: Heating only.

Warranty:
1 year from the date of installation
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