Product Description
A hydronic circulator that conserves energy and eliminates maintenance. Armstrong's Astro 2 Circulator is intended for circulating water or ethylene glycol solutions in closed hydronic or solar heating systems. It is designed with no mechanical seals or couplers to replace and no lubrication is required. Automatically circulates water through domestic hot water distribution pipes. This helps to ensure that everyone in the household has “instant” hot water at the tap when they need it, while also helping to conserve water and save water heating energy costs. All systems are assembled, wired, tested, and then shipped from the factory, ready for installation.
***Rubber gaskets included with pump***
Typical Applications
Closed hydronic systems
Solar heating systems
Domestic water and open system heating applications
Performance Data
- Minimum Fluid Temperature: 36 degrees F (2 degrees C)
- Maximum Fluid Temperature: 230 degrees F (110 degrees C)
- Connection Sizes: Flanged; 2 bolt flange
- Maximum working pressure: 150 psi
- Clock/Timer: 12-hour analog clock with AM/PM indication
- Timer Settings: Individual mechanical toggles for each 15 minute interval over 24 hours
- Manual Override: 3 position slide switch on/auto/off
Features
- Efficient/Quiet Operation
- Universal Flange to Flange Dimension
- Stainless Steel Construction
- UL and CSA Listed
- No mechanical seals to leak
- No couplers to break
- No lubrication
- Noryl impeller
- Vent plug for initial purging if required
- Stainless Steel shaft
- Ethylene Propylene gaskets
- Impedance protected motor
Astro-2 30SS circulator with timer, aquastat & 6 ft. line cord.
Automatically circulate water through domestic hot water distribution pipes. This helps to ensure that everyone in the household has “instant” hot water at the tap when they need it, while also helping to conserve water and save water heating energy costs. All systems are assembled, wired, tested, and then shipped from the factory, ready for installation.
• Power Connection: 5.0 ft (1.5 m) power cord, molded duplex plug with ground
• Environment: Indoor use only
• Max. Working Pressure: 150 psi (1034 kPa)
• Ambient Temperature: -40°F to 180°F (-40°C to 82°C)
• Max. Water Temperature: 230°F (110°C)
• Low Temperature Switchpoint (1): 85°F (29°C) ±10%
• High Temperature Switchpoint (1): 105°F (40°C) ±10%
• Clock/Timer: 12-hour analog clock with AM/PM indication
• Timer Settings: Individual mechanical toggles for each 15 minute interval over 24 hours
• Manual Override: 3 position slide switch; on/auto/off
2 bolt flange- 115 Vac, 60 Hz, 0.98 A, 117W
(1) High/low temperature switch points are as measured on pipe surface with the Aquastat (-TA models only).
MATERIALS OF CONSTRUCTION (Wetted Parts)
Pump Casing Lead Free Bronze* or Stainless Steel*
Pump Shaft Polyether Imide (PEI)
Impeller Ceramic
Bearings Ceramic
Bearing Seal EPDM
*Complies with section 116875 of the California Health and Safety Code and Vermont Act 193 (Lead content of wetted surface is 0.25% or less.)
With Timer and Aquastat, For Domestic Recirculation Systems
Size: 21 Brand: ArmstrongRELATED PRODUCTS
