Product Description
Armstrong Astro 225SSU Stainless Steel Circulator Pump
Part #110223-310 | Astro 2 Series | 3-Speed | 115V Single Phase
The Armstrong Astro 225SSU is a quiet, maintenance-free 3-speed stainless steel circulator for open systems, including potable water recirculation, as well as closed hydronic heating and cooling. It draws 83 W nominal, is NSF 372 certified, and comes with a removable check valve installed at the pump outlet.
Benefits & Features
Adjustable performance
- Three field-selectable speeds cover a wide performance range
- 83 W nominal power
- Removable check valve at the pump outlet
Easy electrical connection
- Simple terminal strip for fast and easy wiring
- ETL listed for the US and Canada (UL 778, CSA C22.2 No. 108-01)
Easy replacement and cross reference
- Replaces a wide variety of fixed-speed circulators
- Cross-reference for popular models is affixed to the packaging
Quiet, long-term performance
- Stainless steel body, NSF 372 certified (lead-free) for open systems
- Ceramic shaft and ceramic bearings
- Noryl impeller, designed for quiet, zero-maintenance operation
Specifications
| Manufacturer | Armstrong Fluid Technology |
|---|---|
| Model / Part Number | Astro 225SSU / 110223-310 |
| Body Material | Stainless Steel (NSF 372, lead-free) |
| System Type | Open systems (stainless steel, NSF 372, lead-free) |
| Voltage / Frequency | 115V / 60 Hz, single phase |
| Speeds | 3 (field selectable) |
| Full Load Amps (speed 3 / 2 / 1) | 0.69 / 0.55 / 0.43 A |
| Nominal Power | 83 W |
| Max Working Pressure | 150 PSI |
| Max Fluid Temperature | 230°F (110°C) |
| Max Ambient Temperature | 104°F (40°C) |
| Connection | Union, 1-1/4" NPSM |
| Check Valve | Removable, installed at pump outlet (1") |
| Dimensions A × B × C | 6.00" × 5.00" × 4.00" (152 × 127 × 102 mm) |
| Shaft / Bearings | Ceramic |
| Impeller | Noryl |
| Gasket | EPDM |
| Certifications | ETL listed (US and Canada); NSF 372 |
| Weight | 6.5 lb (2.9 kg) |
Performance Curve & Dimensions
Performance curve
Dimensional drawing
Design & Submittals
- Astro 2 3-Speed Circulators Submittal (PDF)
- Astro 2 Circulators Technical Overview (PDF)
- Astro 2 Typical Specification (DOC)
- Astro 2 Circulators Solution Outline (PDF)
Warranty
Armstrong warrants its circulators against defects in material and workmanship for 30 months from the date of manufacture, when installed and used in accordance with Armstrong's printed instructions (normal wear and tear excepted).
Installation, Maintenance, Genuine Parts & Parts Kits
- Astro 2 Circulator, 3-Speed Model Installation & Operating Instructions (PDF)
- Astro 2 24-Hour Timer & Aquastat Accessory Instructions (PDF)
- Circulator Flange & Hardware Kits (PDF)
- Residential Circulator Pump Parts Kit Catalog (PDF)
Always use genuine Armstrong parts and parts kits to keep your circulator performing to specification. Compatible accessories include a 24-hour timer and an aquastat control.
