Grundfos ALPHA2 32-80 180

The ALPHA2 32-80 180 is a high-performance, energy-efficient circulator pump from Grundfos’ premium ALPHA2 series. Delivering an impressive 8 meters (80 kPa) of head pressure with 32mm large ports and a 180mm flange-to-flange distance, this pump is engineered for demanding heating applications in large residential properties, multi-story buildings, and light commercial spaces. The combination of high head, high flow capacity (6 m³/h), and Grundfos’ intelligent AUTOADAPT technology makes this pump the ultimate choice for system upgrades and new installations requiring maximum performance with minimum energy consumption.

Key Benefits

• High Head (8m / 80 kPa): Powerful circulation for multi-story buildings (3+ floors), long pipe runs, and high-resistance systems.

• Large 32mm Ports: High flow capacity (6 m³/h) for large heating zones, multiple circuits, and commercial applications.

• AUTOADAPT Technology: The pump automatically reads your system’s characteristics and continuously adjusts performance for peak efficiency – no manual tuning required.

• Massive Energy Savings: Consumes as little as 8 Watts – up to 85% less energy than older UPS or UNO pumps.

• 180mm Flange Distance: Direct drop-in replacement for older large-format circulators (UPS 32-80, Wilo, etc.).

• Alarm Relay Output: Remote fault signaling for integration with building management systems (BMS).

Performance Details
The ALPHA2 32-80 180 delivers a maximum head of 8 meters (80 kPa) and a maximum flow rate of 6 m³/h. The pump features multiple operating modes:

Additional features:

• Night setback mode – Automatic speed reduction for DHW recirculation during low-demand hours

• LED user interface – Color-coded status and fault indication

• Alarm relay output – Remote fault signaling

Applications & Usage

• Large residential heating – 3+ story homes, 5,000-8,000+ sq ft

• Multi-family buildings – 3-6 unit apartments, townhouse complexes

• Light commercial hydronic heating – Offices, retail spaces, restaurants, small hotels

• High-resistance radiator systems – Many TRVs, small bore pipes, long runs

• Domestic hot water recirculation – Large-diameter, long loops

• Chilled water circulation – Small commercial cooling systems

• Heat pump distribution – Large residential heat pump systems

• Hydronic separation – Primary circulator for low-loss headers

ALPHA2 32-80 180 vs ALPHA2 25-80 180: Which to Choose?

Choose 32-80 if: You have larger pipework (32mm/1¼” or larger), need higher flow rates, or are replacing a UPS 32-80.

AUTOADAPT Technology Explained
Unlike simple 3-speed pumps, AUTOADAPT continuously monitors your heating system’s demand and adjusts pump performance in real-time. When radiators/zone valves close, the pump reduces speed automatically. When demand increases, the pump ramps up. This means:

• No manual speed selection – The pump finds the optimal setting for you

• Maximum energy savings – Never wastes energy over-pumping

• Reduced system noise – No excess pressure causing water noise

• Longer component life – Valves and components see less stress

Durability & Reliability
Engineered for demanding commercial-grade applications:

• Stainless steel rotor can (AISI 304) – corrosion-resistant

• Ceramic bearings & graphite thrust bearing – self-lubricating, wear-resistant (50,000+ hours)

• Dry-running protection – automatic shutdown if water supply is interrupted

• Automatic de-airing function – self-venting during startup, prevents air lock damage

• Cast iron housing (EN-GJL-200) – durable for decades of service

• IPX4D splash-proof rating – safe for mechanical rooms and boiler rooms

• Alarm relay output – remote fault signaling for BMS integration

Customer Value
For NPF Store customers with large heating systems, the ALPHA2 32-80 180 delivers commercial-grade power with residential-grade efficiency. It directly replaces older UPS 32-80 pumps and other large-format circulators without pipe modification. The combination of 8m head, 6 m³/h flow, and AUTOADAPT technology ensures your system operates at peak efficiency year-round. With energy savings up to 85%, this pump typically pays for itself in 12-18 months. For contractors, the drop-in 180mm flange and alarm relay output make it the professional choice for system upgrades.

4. Key Features

• ✅ 8m Head (80 kPa) – Maximum pressure for multi-story and high-resistance systems

• ✅ 32mm Large Ports – High flow capacity (6 m³/h) for large systems

• ✅ 180mm Flange Distance – Direct replacement for older large-format circulators

• ✅ AUTOADAPT Technology – Self-optimizing performance, no manual tuning needed

• ✅ Energy Class A (EEI ≤ 0.20) – Ultra-low power consumption (8–60W)

• ✅ Night Setback Mode – Automatic reduction for DHW recirculation

• ✅ Alarm Relay Output – Remote fault signaling for BMS integration

• ✅ Automatic Air Purge – Self-venting during installation and operation

• ✅ LED Status Display – Color-coded for easy troubleshooting

• ✅ Dry-Running Protection – Prevents damage from water loss

• ✅ Ceramic & Graphite Bearings – Long service life (50,000+ hours)

• ✅ 4 Operating Modes – AUTOADAPT, Constant Pressure, Proportional Pressure, Constant Curve

• ✅ Quiet Operation – < 43 dB – suitable for noise-sensitive installations

5. Technical Specifications