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Note
This contains advice or notes that facilitate work and ensure safe operation.
3
General information
The Biral series, PrimAX consists of a complete range of circulation pumps with integrated frequen-
cy converter, which enable independent or controlled adaptation of output to the actual require-
ment of each system. Therefore, in many systems, energy consumption will be reduced and the
control behaviour of the system improved.
Besides this, current noise from control cabinets can be reduced effectively. All necessary settings
can be adjusted using the control panel for the pump.
3.1
Intended use
Biral circulation pumps from the PrimAX series are intended for circulating fluids in the following
equipment:
– Heating systems (floor heating, single and dual pipe heating systems)
– Air-conditioning systems.
– Cold water systems (cold water systems are equipment units in which the ambient temperature
is below the temperature of the medium).
The pumps are suitable for use in systems with variable or constant pumped volumes.
3.2
Requirements of the pumped medium
PrimAX is suitable for the circulation of the following media:
– Pure, thin, non-explosive and non-aggressive media without solid or long fibrous elements,
which will not affect the pump either mechanically or chemically.
– Cooling liquids free of mineral oil
– Softened water
– Heating water:
Requirements according to current standards that apply to water quality in heating systems:
(e.g. VDI 2035)
– Glykol:
The pump can be used for delivering water-glycol mixes. Maximum permissible viscosity:
50 mm²/s (cSt). This corresponds to a water-ethylene-glycol mix with a glycol content of around
50% at –10°C. The pump is controlled via an output-limiting function that protects against
overload. The delivery of glycol mixes affects the MAX characteristic curve because the delivery
capacity is reduced accordingly, based on the glycol content and temperature of the media.
For the delivery of a liquid with density that differs from water and/or kinematic vis-
cosity, the delivery output is reduced.
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