Characteristics, Intended Use; Operating Temperature/Operating Pressure - Biral A 402 V2 Instructions D'installation

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3. Characteristics, intended use

The Biral circulating pumps of the series
A 402 V2, A 402-1 V2, A 501 V2, A 502 V2, A 651 V2, A 651-1 V2
A 652 V2, A 801 V2
AW 402-1 V2
AD 402-1 V2, AD 501 V2, AD 502 V2, AD 651 V2, AD 652 V2
are used for pumping liquids
in closed circulation systems
− In heating systems: Series A...
− In drinking water systems: Series AW...
The pumps are suitable for use in systems with variable flow rates
(in controlled operation)
– Constant flow rates
(with optimum adjustment options for the operating mode)
3.1 Requirements of the conveying medium
− Pure, thin, non-explosive medium
− No solid or fibrous elements
or admixture of mineral oils
Additional requirements for heating systems
As well as cooling, air-conditioning and refrigeration systems:
− Heating water of normal water quality (E.g. VDI 2035)
− Water/glycol mix with a maximum 50% proportion of glycol.
Additional requirements for drinking water systems:
− Permissible water hardness: max. 35 °fH (20 °dH)

3.2 Operating temperature/operating pressure

Permissible temperature for medium:
− Series A...
(heating systems)
Standard design:
Offset installation:
− Series AW...
(drinking water systems)
Permissible operating pressure: max. 16 bar
Ambient temperature:
For other details see chapter 11
The pump must not be used
for feeding fire-risk media such as
diesel oil and combustibles.
(Water temperature below 65 °C)
max. 25 °fH (14 °dH)
(Water temperature below 85 °C)
+15 °C to 95 °C
+15 °C to 110 °C
+15 °C to 85 °C
max. 40 °C