GRUNDFOS ALPHA 2 CIRCULATOR PUMPS

PUMP
GRUNDFOS Alpha2 is a revolutionary variable speed-controlled circulator pump designed for hot water circulation in heating,
cooling and solar applications. The pump is provided with a number of unique features:

Variable Speed inverter technology that enables the pump to selectively operate on a constant curve, prop onal
pressure where pressure is adjusted according to heat demand and constant pressure where pressure remains constant irrespective of system demand.
Three selectable speeds so the pump performance can be matched to system requirements.
Fully automated AUTO function which continuously adjusts pump output to system demand and thus ADAPT optimises
energy consumption.
Display indicating power consumption and flow as well as alarm and warning conditions.
Pump construction is cast iron for the pump housing, stainless steel for the rotor can, and composite plastic for the impeller.
Pumps are supplied complete with BSP union connections and insulating shells.

MOTOR
The pump is fitted with an integral 4-pole synchronous permanent-magnet high-efficiency inverter-controlled motor fitted with
thermal overload protection. The pump should be connected to a suitably rated MCB or fuse.

Enclosure Class: X4D  Insula on Class: F Voltage: 1x240V

OPERATING CONDITIONS
Pumped Liquids: Thin, clean non-aggressive liquids without solid particles
Liquid Temperature: +2 ⁰C to +110 ⁰C, though a maximum of
+65 ⁰C is recommended for optimal system efficiency
Max. Ambient Temperature: +80 ⁰C
Max. Opera ng Pressure: 10 Bar
Min Inlet Pressure: up to +75 C – 0.05 Bar, up to +90 ⁰C – 0.3
Bar, up to +110 ⁰C – 1 Bar
Installa on: Pumps must be installed with the pump sha
horizontal, ver cal water flow, and the plug connection
pointing downwards