Grundfos High-Efficiency Circulator Pump ALPHA2 GO K 25-75 180 220-240V 9H AG0

ALPHA2 GO K 25-75 180 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 verify the best selection when replacing both integrated and external circulator pumps; furthermore, exact pump curves can be easily adopted. The ALPHA2 GO features intelligent control modes: constant pressure, proportional pressure, constant flow rate, and constant 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 overall 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 scale deposits. In the undesired event of a pump blockage, the motor continuously attempts to start with the highest possible torque, thus ensuring startup even under difficult conditions. The ceramic shaft and ceramic bearings are subject to only minimal wear. This increases the 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 to more effectively push the air to the nearest vent valve. The Grundfos GO app also offers the convenient option of checking the system based on event logs and historical data for flow rate, head, estimated media temperature, and operating hours. Type of control: Frequency converter: integrated Pumped liquid: Pumped liquid: Water Liquid temperature range: -20 .. 110 Celsius Liquid temp. during data acquisition: 20 Celsius Density: 998.2 kg/m3 Technical data: Rated flow: 2.52 m3/h Rated head: 5.52 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 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: 180 mm Electrical data: P1 min.: 3 W Maximum power consumption P1: 75 W Mains frequency: 50 / 60 Hz Rated voltage: 1 x 220-240 V Minimum current consumption: 0.04 A Maximum current consumption: 0.68 A Enclosure class (IEC 34-5): X4D Insulation class (IEC 85): F Thermal protection: Electronic Other: Energy efficiency index (EEI): 0.19 Net weight: 1.93 kg Gross weight: 2.15 kg Shipping vol.: 0.004 m3 Danish VVS No.: 380475775 Swedish RSK No.: 5746854 Finnish LVI No.: 4616566 Norwegian NRF No.: 1392941 Country of origin: RS Customs tariff No.: 84137030