Armstrong Fluid Technology 110223-326 Pump

The Armstrong Fluid Technology 110223-326 Pump (Model Astro 210CI) is a high-performance, three-speed circulator designed for efficiency in closed hydronic heating and cooling systems. Built with a rugged cast iron body, this 115Vac single phase circulator features a maintenance-free wet rotor design, ensuring quiet and reliable operation for residential and light commercial applications. With a maximum flow rate of 34 GPM and up to 16.5 feet of head, it offers exceptional versatility. The internal e-coating on the volute provides superior corrosion resistance, while the ceramic shaft and bearings enhance the unit's longevity. This HVAC circulation pump is compatible with 3/4", 1", 1 1/4", or 1 1/2" flanges, making it an ideal choice for hydronic system maintenance or upgrades. Its pre-installed, removable high-flow check valve prevents backflow and simplifies the installation process for technicians and property owners alike.

Key Benefits:

• Adjustable Performance: Features a three-speed switch to match the specific flow requirements of your system, reducing energy consumption.
• Corrosion Protection: The e-coated cast iron volute prevents internal rust and buildup, ensuring consistent performance over time.
• Quiet Operation: The wet rotor technology eliminates the need for mechanical seals and couplers, providing nearly silent circulation.
• Easy Installation: Includes a removable check valve and a plug-in terminal strip to save time during setup and wiring.
• Universal Compatibility: Designed for an easy exchange with competing models thanks to its flange-to-flange and bolt-to-bolt compatibility.

Common Questions:

Can this pump be used for potable water systems?
No, the Astro 210CI features a cast iron body intended for closed-loop hydronic heating systems. For domestic potable water, a bronze or stainless steel model is required to prevent lead contamination and rust.

What should I do if the pump is making a humming or clicking noise?
Noises often indicate air trapped in the system or a debris blockage. Ensure the hydronic system is properly bled of air. If the noise persists, check the ceramic bearings and shaft for potential obstructions or wear.

How do I select the correct speed setting?
The three-speed functionality allows you to optimize flow. Start at the lowest setting; if the furthest radiators or zones are not reaching the desired temperature, increase the speed to 2 or 3 until the system is balanced.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.

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