Installation And Assembly; Flushing Out The Heating System; Antifreeze; Installation - Biral A 12 Instructions D'installation Et D'entretien

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4.4 Installation position

As supplied
Cable screw connector left
The arrow on the pump
housing indicates
the direction of flow.
The terminal box must not
face upwards, since water
could then easily penetrate.
The terminal box can be
turned through 90° before
installing the pump.
For this purpose the
4 housing screws can be
released and the motor
head turned to the permitted
terminal box position.
Do not displace or damage
the seal between motor
and pump housing.
After inserting the screws
tighten crosswise alternately.
english

4. Installation and 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 Antifreeze (where necessary)
Important: Rinse the piping especially thoroughly before filling
with the antifreeze mixture. Follow the instructions
of the supplier of the antifreeze concerning mixing, filling,
and the selection of materials in the line and device network
(observe the corrosion protection!) The water/glycol mixture may
contain up to 50% glycol. Correct the flow data for the pumps
accordingly if there is more than 10% glycol.

4.3 Installation

Only install after all of the welding and soldering has been
done on the system. Prevent water from dripping on the pump
motor, especially the electronics. Install the pump housing
in the system without current.