Montage; Flushing Out The Heating System; Antifreeze; Installation - Biral A 402 V2 Instructions D'installation

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4.4 Installation position

The supplied condition
is position A.
The terminal box should
not show (M, N, O, P) below,
otherwise water may penetrate
easily.
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. Montage

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.
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
(mind 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 casing into the unit when not under voltage.
A
E
I
M
B C
F G
J K
N
O
D
H
L
P