Product Description
Armstrong Astro 280CI Cast Iron Circulator Pump
Part #110223-320 | Astro 2 Series | 3-Speed | 115V Single Phase
The Armstrong Astro 280CI is a quiet, maintenance-free 3-speed cast iron circulator for closed hydronic and solar heating systems circulating water or ethylene-glycol solutions. It draws 218 W nominal and comes with a removable check valve installed at the pump outlet.
3-SpeedField Selectable
218 WNominal Power
115VSingle Phase
230°FMax Temp
Flanged2-Bolt
Closed-loop systems and indoor use. For open (potable water) systems, choose the stainless steel Armstrong Astro 280SS (part #110223-321).
Benefits & Features
Adjustable performance
- Three field-selectable speeds cover a wide performance range
- 218 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
- Cast iron body for continuous closed-loop service
- Ceramic shaft and ceramic bearings
- Noryl impeller, designed for quiet, zero-maintenance operation
Specifications
| Manufacturer | Armstrong Fluid Technology |
|---|---|
| Model / Part Number | Astro 280CI / 110223-320 |
| Body Material | Cast Iron |
| System Type | Closed systems only |
| Voltage / Frequency | 115V / 60 Hz, single phase |
| Speeds | 3 (field selectable) |
| Full Load Amps (speed 3 / 2 / 1) | 1.90 / 1.80 / 1.50 A |
| Nominal Power | 218 W |
| Max Working Pressure | 150 PSI |
| Max Fluid Temperature | 230°F (110°C) |
| Max Ambient Temperature | 104°F (40°C) |
| Connection | Flanged, 2-bolt (flanges sold separately) |
| Check Valve | Removable, installed at pump outlet (1-1/4") |
| Dimensions A × B × C | 6.50" × 6.38" × 4.87" (165 × 162 × 124 mm) |
| Shaft / Bearings | Ceramic |
| Impeller | Noryl |
| Gasket | EPDM |
| Certifications | ETL listed (US and Canada) |
| Weight | 10.1 lb (4.6 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.
Please note: Companion flange kits are sold separately (3/4", 1", 1-1/4" or 1-1/2"). Not sure which kit or accessories you need? Contact Canadian Pump Shop and we'll help match them to your system.
