Grundfos High-Efficiency Circulator Pump ALPHA2 GO 25-60 130 220-240V 9H DF0

ALPHA2 GO 25-60 130 The ALPHA2 GO is a high-efficiency circulator pump with an electronically commutated motor. It is designed for circulating liquids in heating and air conditioning systems. The Grundfos GO app offers numerous digital functions that simplify commissioning for both new and replacement installations. With the Grundfos GO app, you can easily check the best selection when replacing integrated and external circulator pumps; moreover, the exact pump characteristic curves can be easily adopted. The ALPHA2 GO features intelligent control modes: constant pressure, proportional pressure, constant flow rate, and constant characteristic curve. Each control mode has adjustable setpoints. The AUTOADAPT setting, available for constant and proportional pressure, eliminates the need for manual selection of the pump setpoint. The PWM input allows for precise external speed control, which further optimizes the entire system. The installation connector significantly simplifies installation without additional tools. Automatic self-venting and dry-running protection ensure quiet and reliable pump operation. The product is characterized by a robust start mode that prevents the risk of blockages due to impurities, magnetite, or limescale deposits. In the unwanted event of a pump blockage, the motor continuously attempts to start with the highest possible torque, thus ensuring start-up even under difficult conditions. The ceramic shaft and ceramic bearings are subject to minimal wear. This increases service life and reduces the likelihood of noise that can occur with wear due to increased bearing play. If the system's air detection and venting function detects air, the circulator pump begins to pulsate, thereby more effectively pushing the air to the nearest vent valve. The Grundfos GO app also offers the convenient option to monitor the system using event logs and historical data on flow rate, head, estimated media temperature, and operating time. Type of control: Frequency converter: integrated Pumped liquid: Pumped liquid: Water Liquid temperature range: 2 .. 110 Celsius Liquid temp. during data recording: 20 Celsius Density: 998.2 kg/m3 Technical data: Rated flow rate: 1.9 m3/h Rated head: 3.26 m Pump head orientation: 9H Approvals: CE, VDE Materials: Pump housing: Grey cast iron Pump casing: EN 1561 EN-GJL-150 Pump housing: ASTM A48M-150B Impeller material: Composite material Impeller: PES 30% GF + PESU-GF20% Installation: Ambient temperature: 0 .. 55 Celsius Max. operating pressure: 10 bar Pipe connection standard: ISO 228-1 Connection type: G Connection size: 1 1/2 inch Pressure rating: PN 10 Port-to-port length: 130 mm Electrical data: P1 min.: 3 W Maximum power input P1: 37 W Mains frequency: 50 / 60 Hz Rated voltage: 1 x 220-240 V Minimum current consumption: 0.04 A Maximum current consumption: 0.4 A Enclosure class (IEC 34-5): IP44 Insulation class (IEC 85): F Thermal protection: Electronic Other: Energy efficiency index (EEI): 0.18 Net weight: 1.75 kg Gross weight: 1.96 kg Shipping volume: 0.004 m3 Country of origin: RS Customs tariff no.: 84137030