Intended Application; Operating Temperature/Operating Pressure; Assembly; Antifreezers - Biral LX Série Instructions D'installation Et D'entretien

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3. Intended application

Biral circulation pumps of the series
LX/HX (single pumps) and
LXD/HXD (twin pumps)
are used to circulate liquids in
– hot-water heating systems
They are glandless and not suitable for secondary
hot water services.
Heating water in accordance with VDI 2035, no solid or long fibro-
us additions. Water/glycol mixture with up to 50% glycol proporti-
on. The pumps may not be used in the food-processing industry
nor for drinking water.
Pumps with bronze housings should be used in industrial water
installations if the water hardness is below 20° tH (=14 °dH).
A dry running meter should be used in the case of greater water
hardness.
The pump may not be used for the supply of combu-
stible media such as fuel, diesel oil, etc.

3.1 Operating temperature/Operating pressure

Permissible water temperature: –20 °C to +140 °C
Temperature class:
Permissible operating pressure: max. 6 bar
Special versions (PN 16):
Ambient temperature:
Noise level:
Condensed water must be prevented from getting into
the terminal box.

4. Assembly

4.1 Flushing out the heating system (with pump removed)
In order to avoid undesirable interruptions in operation
and non-starting of the pump after long periods of standstill,
it is recommended for a newly-installed or converted heating
system that the system be drained, flushed through well
and then refilled again after heating up for the first time.
The system must comply with the latest state of technology.
(Positioning of expansion vessel or initial safety feed.)
4.2 Antifreezers (as far as necessary)
Important: Flush the piping network through particularly well
before the antifreeze mixture is filled.
Follow the antifreeze supplier's instructions with respect to mixing
and filling, as well as the choice of material in the piping and
apparatus network (pay particular attention to protection against
corrosion!). Water/glycol mixture up to 50% glycol ratio permissible.
Over 10% glycol ratio, correct the pumping data of the pumps
accordingly.
^
TF 140 as per CEN 335-2-51
max. 16 bar.
max. 40 °C
< 45 dB (A)