Grundfos ALPHA2 32-60 180

The ALPHA2 32-60 180 sits perfectly between standard residential pumps (4m head) and heavy-duty commercial pumps (8m head). With a maximum head of 6 meters (60 kPa) and a generous 180mm flange-to-flange length, this circulator pump is designed for medium-to-large residential properties, duplexes, townhouses, and small commercial spaces requiring higher flow and pressure than standard pumps can deliver. The 32mm connection ports allow for increased flow rates without excessive friction loss.

Key Benefits

• Optimal 6m Head (60 kPa): Ideal for 2-3 story homes, longer pipe runs, or systems with moderate resistance (radiators with TRVs).

• Up to 85% Energy Savings: Consumes as little as 6 Watts – dramatically lower than older UNO or UPS pumps.

• AUTOADAPT Technology: The pump learns your system’s characteristics and continuously adjusts performance for peak efficiency.

• 180mm Flange Distance: Direct replacement for older 180mm circulators from Grundfos UPS, Wilo, and other brands.

• 32mm Ports: Higher flow capacity (up to 5.5 m³/h) for larger zones or multiple heating circuits.

• Silent Operation: <43 dB – ideal for apartments or noise-sensitive installations.

Performance Details
The ALPHA2 32-60 180 delivers a maximum head of 6 meters (60 kPa) and a maximum flow rate of 5.5 m³/h. It features four operating modes:

• AUTOADAPT: Automatically selects between proportional and constant pressure modes.

• Constant Pressure (3 settings): Best for underfloor heating or systems with pressure-dependent valves.

• Proportional Pressure (3 settings): Optimal for radiator systems (pressure decreases as flow drops).

• Constant Curve (3 speeds): For system flushing, troubleshooting, or simple on/off operation.

The pump includes night setback mode for domestic hot water recirculation (reduces speed during low-demand hours) and a manual speed override for technicians.

Applications & Usage

• Medium-to-large residential heating (2-3 stories, 2000-4000 sq ft)

• Small apartment buildings (2-4 units)

• Light commercial hydronic heating (offices, retail spaces)

• Domestic hot water recirculation (medium loops)

• Chilled water circulation (small commercial)

• Hybrid systems (radiators + underfloor heating zones)

• Solar thermal distribution

Durability & Reliability
Engineered for longevity, the ALPHA2 32-60 180 features:

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

• Ceramic bearings & graphite thrust bearing – self-lubricating, wear-resistant

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

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

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

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

The pump also includes an alarm relay output for remote fault signaling to building management systems (BMS) or simple warning lights.

Customer Value
For NPF Store customers, the ALPHA2 32-60 180 offers the perfect balance: more power than a standard 4m pump but without the overkill of an 8m pump. It eliminates cold spots in larger homes, reduces energy bills significantly (often pays for itself in 12-18 months), and runs so quietly you won’t know it’s there. The 180mm flange distance makes it a true drop-in replacement for older pumps, minimising labour costs for contractors and DIYers alike.

4. Key Features

• ✅ AUTOADAPT – Self-optimizing performance based on real system demand

• ✅ 6m Head (60 kPa) – Perfect for medium-to-large residential systems

• ✅ 32mm Connection Size – Higher flow capacity for larger zones

• ✅ 180mm Flange Distance – Standard replacement size for older pumps

• ✅ Energy Class A (EEI ≤ 0.20) – Ultra-low power consumption (6–50W)

• ✅ Automatic Night Setback – Reduces energy use during off-peak hours

• ✅ Alarm Relay Output – Remote fault signaling for monitoring systems

• ✅ 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)

5. Technical Specifications