Circulator pump ALPHA2 25-40 130 Grundfos

Includes AUTOADAPT, which provides unprecedented levels of comfort with the lowest possible energy consumption, making commissioning safe and easy. Energy-saving night mode function Manual summer mode saves energy during the summer and ensures safe starting in the heating season. Intuitive one-button operation makes it easy to select any control mode. No need for external motor protection, reducing installation time High torque starting improves starting in harsh conditions. Maintenance-free due to canned rotor design and use of solid components The ALPHA connector allows for quick and easy electrical installation. Insulation casings are supplied with the pumps to minimize heat loss in heating systems. Hydraulic balancing using the temporary use of ALPHA Reader and the Grundfos GO Balance app allows installers quick and easy hydraulic balancing. The combination of ALPHA2 with the other two components, ALPHA Reader and the Grundfos Go Balance app, allows installers to carry out quick and easy hydraulic balancing without compromising reliability, efficiency and ease of installation.

The AUTOADAPT function continuously adapts the pump performance to the actual heat demand, i.e. the size of the system and the changing heat demand. The function will find the appropriate setting to offer optimum comfort with minimum energy consumption. It contributes to quick, safe and easy start-up.

In addition, the pump also has three control modes, each with three settings: proportional pressure control constant pressure control constant curve mode The display displays actual energy consumption in watts or actual flow rate in m3/h, as well as alarms and warnings. LEDs indicate the current operating status.

Automatically activating the night mode function reduces motor speed to save energy. Automatic changeover depends on a change in supply pipe temperature.

Manual summer mode, once enabled, the pump automatically starts frequently at low speed to prevent rotor lockup. Also, it saves energy at the same time.

This is a canned rotor pump, which means that the pump and motor form an integral unit. The bearings are lubricated by the pumped liquid, ensuring maintenance-free operation. Pump includes dry-running protection.

Pump has ceramic shaft and radial bearings, carbon thrust bearing, stainless steel rotor sleeve, support plate and rotor liner and composite impeller , and all contribute to a long service life.

The pump is self-bleeding through the system, which contributes to easy start-up. Its compact design, featuring a pump head with integrated control box and control panel, suits most common installations.

The pump casing is made of cast iron and galvanized to improve resistance to corrosion.

The motor is a permanent magnet/compact stator, characterized by its high efficiency. The speed of the pump is controlled by an integrated frequency converter, which is incorporated in the control box.


Characteristics of the Circulator pump ALPHA2 25-40 130:
- Pumped liquid : Water
- Liquid temperature range: 2 .. 110 °C
- Liquid temperature during operation: 60 °C
- Density: 983.2 kg/m³
- Technical: Class TF : 110
- Approvals on the nameplate: VDE,CE,EAC
- Pump casing: Cast iron EN-GJL-150 ASTM A48-150B
- Impeller: PES 30% FIBERGLASS< br>- Installation: Ambient temperature range: 0 .. 40 °C
- Maximum working pressure: 10 bar
- Pipe connection: G 1 1/2
- Nominal pressure: PN 10< br>- Port to port length: 130 mm
- Power - P1: 3 .. 18 W
- Mains frequency: 50 / 60 Hz
- Rated voltage: 1 x 230 V
- Maximum current consumption: 0.04 .. 0.18 A
- Degree of protection (IEC 34-5): X4D
- Class of insulation (IEC 85): F- Others: Energy (IEE): 0.15
- Net weight: 1.86 kg
- Gross weight: 2.02 kg
- Transport volume: 0.004 m³

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* Does not include fittings