General Description; Pumped Liquids - Grundfos ALPHA+ Montage- Und Betriebsanleitung

Declaration of Conformity
We GRUNDFOS declare under our sole responsibility that the product GRUNDFOS ALPHA+, to
which this declaration relates, is in conformity with the Council Directives on the approximation of
the laws of the EEC Member States relating to
– Machinery (98/37/EEC).
Standard used: EN 292.
– Electromagnetic compatibility (89/336/EEC).
Standards used: EN 61 000-6-2 and EN 61 000-6-3.
– Electrical equipment designed for use within certain voltage limits (73/23/EEC).
Standards used: EN 60 335-1 and EN 60 335-2-51.
Bjerringbro, 1st April 2003
Technical Manager
Before beginning installation procedures, these installation
and operating instructions should be studied carefully. The
installation and operation should also be in accordance with
local regulations and accepted codes of good practice.

1. General description

GRUNDFOS ALPHA+ is a range of circulator pumps with integrated dif-
ferential pressure control enabling adjustment of pump performance to
the actual system requirements. In many systems, this will mean a con-
siderable reduction in power consumption, prevent noise from thermo-
static valves and similar fittings, and improve the control of the system.
2. Applications
GRUNDFOS ALPHA+ is designed for circulating liquids in heating sys-
tems. The pumps can also be used in domestic hot-water systems.
GRUNDFOS ALPHA+ is suitable for:
• systems with constant or variable flows where it is desirable to
optimize the setting of the pump duty point and
• systems with variable flow-pipe temperatures.

2.1 Pumped liquids

Thin, clean, non-aggressive and non-explosive liquids, not containing
solid particles, fibres or mineral oils.
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Svend Aage Kaae