Recirculating pump ALPHA1 25-80 N 180 Grundfos

Grundfos ALPHA1 high-efficiency circulator pumps are designed to circulate liquids in heating systems. The stainless steel variant of ALPHA1 is suitable for domestic hot water systems. With an Energy Efficiency Index (EEI) at the ErP benchmark for the most efficient pumps, it contributes to energy savings.

The pump can operate in proportional pressure, constant pressure and constant curve modes. The control mode is selected using the button on the screen. LEDs indicate operating status, actual power consumption in watts, as well as warnings and alarms.

The design and materials chosen for the pump help to extend its life. The pump is self-venting through the system, which contributes to easy start-up. The compact design, with a pump head with an integrated control box, fits into most common installations. The pump and motor form an integral unit without a shaft seal. The bearings are lubricated by the pumped liquid. These construction features ensure maintenance-free operation.

Cast iron pump casings are electro-coated to improve corrosion resistance. The motor is a compact stator/permanent magnet synchronous motor characterized by high efficiency. The speed of the pump is controlled by an integrated frequency converter built into the control box.

Insulating casings are supplied with pumps to minimize heat loss in heating systems.

>Suitable for:
- Commercial building heating
- Commercial building recirculation
- Domestic hot water recirculation
- Domestic heating
- Industrial heating

Technical characteristics of the recirculating pump ALPHA1 25-80 N 180:

Technical:
- Max. head: 80 dm
- TF class: 110
- Approvals on the nameplate: CE, VDE< br>- Model: B

Materials:
- Pump casing: Stainless steel
- Impeller: PES

Installation:
- Ambient temperature range: 0 .. 40 °C
- Maximum working pressure: 10 bar
- Pipe connection: G 1 1/2
- Nominal pressure PN: 10
- Port to port length: 180 mm< br>
Liquid:
- Pumped liquid: Water
- Ra Liquid temperature range: 0 .. 110 °C
- Liquid temperature during operation: 60 °C
- Density: 983.2 kg/m³

Electrical data:
- Power - P1: 3 .. 50 W
- Network frequency: 50 / 60 Hz
- Nominal voltage: 1 x 230 V
- Maximum current consumption: 0.04 .. 0.44 A
- Grade protection (IEC 34-5): X4D
- Insulation class (IEC 85): F
- Integrated motor protection: NONE
- Protec. thermal: ELEC

Control panels:
- Night auto.: N
- Pos. connection box: 6H

* Does not include fittings