Grundfos Circulator Pump ALPHA Solar 15-75 BL:130mm,1x230V 9H, No. 98989298

High-efficiency circulator ALPHA SOLAR 15-75 130 High-efficiency circulator ALPHA SOLAR for use in solar thermal systems with variable or constant flow. However, high-efficiency pumps with electronically commutated motors (ECM), such as the ALPHA SOLAR, must not be controlled by an external speed controller that changes or varies the supply voltage. The speed can be regulated via a pulse-width modulated signal (PWM signal) supplied by the solar system controller to optimize solar energy yield and system temperature. This also significantly reduces the pump's power consumption. If no PWM signal is available, the ALPHA SOLAR can be set to one of 4 constant speeds. The pump is then only switched on and off via the controller. Versions/Functions/Features: - High-efficiency EC permanent magnet motor technology - Energy Efficiency Index (EEI) ? 0.20 according to EN 16297-3: 2012 Best in Class - PWM profile C. The PWM signal is a method for generating an analog signal from a digital source - 4 constant speeds - Maintenance-free - Low noise - Easy installation - Deblocking screw - Max. ambient temperature +70 degrees Celsius Pumped liquid: Pumped liquid: Water Media temperature range: 2 .. 110 degrees Celsius Media temp. at data acquisition: 60 degrees Celsius Density: 983.2 kg/m3 Technical data: Nominal flow rate: 1.85 m3/h Nominal head: 3.285 m Pump head orientation: 9H Temperature class: 110 Approvals: CE, VDE, EAC Materials: Pump housing: Gray cast iron Pump casing: EN 1561 EN-GJL-150 Pump housing: ASTM A48-150B Impeller material: Composite Impeller: PES 30% GF + PESU-GF20% Installation: Ambient temperature: 2 .. 70 degrees Celsius Max. operating pressure: 10 bar Connection type: G Connection size: 1 inch Nominal pressure rating: PN 10 Installation length: 130 mm Electrical data: Minimum power consumption P1: 2 W Power consumption P1: 45 W Mains frequency: 50 / 60 Hz Rated voltage: 1 x 230 V Maximum current consumption: 0.04 .. 0.48 A Protection class (according to IEC 34-5): X4D Insulation class (IEC 85): F Other: Energy Efficiency Index (EEI): 0.20 Net weight: 2.01 kg Gross weight: 2.11 kg Shipping volume: 0.004 m3 Country of origin: DK Customs tariff no.: 84137030