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Grundfos Alpha 2L 15-50 Domestic Hot Water Circulating Bare Pump

Status : In stock

Delivery : Standard help

SKU : P002675
Inc VAT: £122.52

Quick Overview

The Grundfos Alpha central heating pump has both variable speed pressure controlled operation and the standard switchable three speed selection. With a unique auto adapt feature the Grundfos Alpha can match its performance to the system requirements.

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Grundfos Alpha 2L 15-50 Domestic Hot Water Circulating Bare Pump
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The Grundfos ALPHA2 domestic circulator is the most advanced energy efficient domestic circulator of its kind on the market today. The ideal choice for a wide range of domestic circulation heating systems with both variable speed pressure controlled operation and the standard selectable three speed operation. The ALPHA2 achieves the highest possible energy savings whilst meeting EuP legislative requirements, the reduction in power consumption has been achieved by using the latest permanent magnet motor technology. In pressure controlled mode power consumption can be reduced to as low as 5 watts. A unique Autoadapt feature allows the pump to match its performance to the system requirements, this helps reduce noise when thermostatic radiator valves are closing. The ALPHA2 pumps are simple to install as new or replacement pupms and they are a standard 130mm between ports.

Key Features
  • Eup compliant
  • Lowest power consumption
  • One pump for all jobs
  • Plug & Pump - No need to open terminal box
  • Power display - Shows actual power usage & power on

Manufacturer Recommendations
It is preferable to install Grundfos circulators in a vertical pipe pumping upwards. This position ensures that the pump shaft is horizontal, which reduces the thrust bearing load and ensures positive air purging from both the rotor chamber and impeller housing. Pumping downwards in a vertical pipe is not recommended as this may lead to air locking of the pump, with resultant loss of performance. However, pumping downwards is acceptable provided an effective air vent is incorporated in the system, before the pump. Where pumps can only be installed in horizontal pipework, it is imperative that the pump shaft is horizontal, or slightly higher at the vent plug end. The shaft must not fall below the horizontal plane, even by a few degrees, as this causes premature wear of the top bearing and shaft. Pumps should not be installed with the shaft in a vertical plane, as this may lead to dry running of the top bearing, noise and possible pump failure.

Controller complete : Composite PC
Rotor can : Stainless Steel
Radial Bearing : Ceramic
Shaft : Ceramic
Rotor cladding : Stainless Steel
Thrust bearing : Carbon
Thrust bearing retainer : EPDM rubber
Bearing plate : Stainless Steel
Impeller : Composite, PES
Pump housing : Cast iron / Stainless Steel
Gaskets : EPDM rubber

Grundfos ALPHA2 is designed for circulating liquids in heating systems, pumps with stainless steel pump housings can also be used in domestic hot water systems.
Unit Of Sale Each
Brand Grundfos
Barcode 5700311669150
EDP code 144947

Product Attachments

View FileGrundfos Alpha 2L    Size: (2.96 MB) Data Booklet

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