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Description
The ALPHA2 15-55F is a variable speed circulator designed to provide consistent flow in a wide variety of applications. It comes complete with an integrated check-valve, foam insulation jacket, and nut captures for flanges. Constructed of Cast Iron, the ALPHA2 is designed to provide year after year of reliable use.

Note: Flange Connection: GF 15/26 Features:
  • Simple push button
  • Control enables the ALPHA2 to be programmed in one of 3-constant speed, 3-constant pressure, or AUTOADAPT control modes. The current operating mode is always visible on the ALPHA2’s LED display
  • The large LED display shows the current energy consumption in Watts and estimated flow in gallons per minute
  • For installation, you have the flexibility to use either our unique ALPHA Plug with line cord or the ALPHA2 with terminal box for conduit connections
  • ALPHA2 is complete with an integrated check-valve, foam insulation jacket, and nut captures for flanges.
  • ALPHA2 comes in both cast iron and stainless steel models
  • Robust startup enables the ALPHA2 to continuously attempt to restart – indefinitely – in blocked rotor conditions
  • ALPHA2 can be used as a replacement for more than 30 competitor pump model

The GRUNDFOS ALPHA2 is suitable for:
  • Systems with constant or varying flow
  • One pipe systems
  • Two pipe systems
  • Underfloor-heating
  • Domestic hot-water recirculation
  • Systems where night setback is required.
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Manuals (1)
Specs
Material:
Cast Iron
Application:
Heating
Flow Range (GPM):
0-21
Max Flow (GPM):
21
Head Range (ft.):
0-19
Max Head (Ft):
19
Type:
Var. Speed Pump
Max Pressure (PSI):
150
Phase:
1
Voltage:
115v
Amperage:
0.65
Hertz:
60
Temperature Range (F):
36°-230°F
Connection Type:
Flanged
Connection Size:
3/4" 1" 1-1/4" 1-1/2"
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