Characteristics, Intended Use; Requirements Of The Conveying Medium; Operating Temperature/Operating Pressure - Biral A 12 Instrucciones De Instalación Y Funcionamiento

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3. Characteristics, intended use

Biral circulation pumps in series
A 12, A 13, A 14, A 15, A 16, A 401, A 500, AD 401
AW 15, AW 16, AW 401
A 12 KW, A 13 KW, A 14 KW, A 15 KW, A 16 KW, A 401 KW, A 500 KW
AD 401 KW
are used for pumping liquids
in closed circulation systems
− In heating systems: Series A...
− In cooling, air-conditioning and refrigerating systems:
Series A...KW
− In drinking water systems: Series AW...
All types are suitable for use in systems with
− Variable feed flows (in controlled operation)
− Constant feed flows
(with optimum adjustment options for the operating point)
− External speed specification

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:

3.2 Operating temperature/operating pressure

Permissible temperature for medium:
− Series A...
(heating systems) +15 °C to 95 °C, , for short periods 110 °C
− Series A...KW
(cooling, air-conditioning and refrigeration systems)
–10 °C to 95 °C
− Series AW...
(drinking water systems) +15 °C to 85 °C
Permissible operating pressure: max. 10 bar
Ambient temperature:
Other details, see chapter 11
The pump must not be used
for feeding fire-risk media such as
diesel oil and combustibles.
Pumps of Type A.. (heating systems)
and A...KW (air-conditioning systems)
should not be used in the vicinity of foods.
max. 35 °fH (20 °dH)
(Water temperature below 65 °C)
max. 25 °fH (14 °dH)
(Water temperature below 85 °C)
max. 40 °C