Grundfos ALPHA1 25-40 180 – Heating Circulation Pump

Suitable for installation in heating systems with high efficiency and low energy consumption.

Technical Specifications

• Nominal flow: 1.5 m³/h
• Nominal head: 2.15 m
• Maximum head: 40 dm
• Thermal class (TF): 110
• Certifications: CE, VDE
• Model: B

Construction Materials

• Pump body: Cast iron (EN 1561 EN-GJL-150 / ASTM A48M-150B)
• Impeller: Synthetic material (PES 30% GF + PESU-GF20%)

Installation

• Ambient temperature range: 0 to 40 °C
• Maximum operating pressure: 10 bar
• Connection type: G
• Connection diameter: 1 1/2 inches
• Nominal connection pressure: PN 10
• Length (end to end): 180 mm

Operating Fluid

• Fluid type: Water
• Fluid temperature range: 2 to 110 °C
• Selected operating temperature: 60 °C
• Fluid density: 983.2 kg/m³

Electrical Elements

• Minimum power consumption (P1): 3 W
• Power consumption (P1): 18 W
• Operating frequency: 50 / 60 Hz
• Operating voltage: 1 x 230 V
• Maximum current consumption: 0.04 to 0.18 A
• Enclosure protection class (IEC 34-5): X4D
• Insulation class (IEC 85): F
• Built-in motor protection: None
• Thermal protection: ELEC

Other Features

• Energy Efficiency Index (EEI): 0.20
• Terminal box position: 6H
• Net weight: 2.01 kg
• Gross weight: 2.17 kg
• Shipping volume: 0.004 m³