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Wilo-Star/Star-S | Wilo
Advantages to you
Wilo-Star Series Brochure

Your advantages

  • Reliable wet rotor technology
  • Quick connect wiring
  • Powerful starting torque
  • Ultra quiet
  • Installable hi-temp check (RFC model)
  • RFC Patented Rotating Flange: US 8,297,664 B2

Recommended services

Series description
Star NaMex

Design

Wet rotor circulation pump, with flanged or union connections. Pre-selectable speeds to adjust the capacity on "S" versions

Application

Hot Water Heating Systems

Chilled Water

Air Conditioning Systems

Water/Glycol concentrations up to 50%

Solar

Geothermal

Max. Flow: 38 GPM

Max. Head: 33 feet

Equipment/function

  • 3 manual selectable speed stages ("S" type only)
  • Reliable wet rotor technology
  • Quick connect wiring
  • Powerful starting torque
  • Ultra quiet
  • Installable hi-temp check (RFC model)
  • RFC Patented Rotating Flange: US 8,297,664 B2

Typekey

Wilo-Star S 21 RFC

Star

Standard pump

S

3 Speed

21

Max. Head

RF

Rotating Flange

C

Check Valve

Z

Stainless Steel Volute

F

Flanged

X

Flange rotated 90°

Technical data

  • Max Temp Range: 14°F to 230°F (-10°C to 110°C)
  • Max Amb Temp: 104°F (40°C)
  • Electrical Connection: 1~115v, Star S33 available in 1~115v, 230v
  • Max Working Pressure: 140 PSI (10 Bar)

Materials

  • Cast Iron Volute
  • Engineered Composite Impeller
  • Stainless Steel Shaft
  • Carbon Impregnated Bearing
  • Steel Terminal Box

Scope of delivery

  • Pump
  • Flange gaskets
  • Installation and operating instructions

Options

  • Ventilation pump Star-RSL 25/6 with automatic ventilation connection
  • Special version 25/4 and 25/6
    • Overall length 130mm (cast iron)
    • Overall length 180mm (red bronze)
Documents

Installation and operating instructions

Wilo-Star Installation and Operating Instructions

Page format 215.9 x 279.4 mm
Number of pages 12
PDF (845 KB)

Catalogue

Star/Star S Catalog

Page format 209.9 x 297.0 mm
Number of pages 19
PDF (1 MB)

General overview

Star S21 Engineering Specification

Page format 215.9 x 279.4 mm
Number of pages 4
PDF (87 KB)

Wilo-Star Engineering Specification

Page format 215.9 x 279.4 mm
Number of pages 4
PDF (84 KB)

Brochure

Page format 215.9 x 279.4 mm
Number of pages 4
PDF (2 MB)

Data sheet

Wilo-Star/Star S Submittal Sheet

Page format 215.9 x 279.4 mm
Number of pages 9
PDF (3 MB)