Connection On The Primary Side (Brine) - Viessmann Vitocal 300-G Installation And Service Instructions Manual

Installation sequence

Connection on the primary side (brine)

A Primary return (brine OUT)
B Primary flow (brine IN)
The components used must be
resistant to the heat transfer med-
ium (never use galvanised pipes
for the brine circuit).
To ensure the perfect operation of
the brine circuit, route pipes so that
air pockets cannot form and that
complete venting is ensured.
Equip the brine circuit, in line with
DIN 4757, with an expansion vessel
and a safety valve.
Connections on the secondary side (heating circuits)
Connect the heating circuit in accordance with the following figure.
100
The expansion vessel must be
approved in accordance with DIN
4807. The diaphragms and seals of
the expansion vessel and the safety
valve must be suitable for the heat
transfer medium.
For calculating the pre-charge pres-
sure of the expansion vessel, see
the technical guide for the relevant
heat pump.
Ensure adequate thermal and
sound insulation of all pipes routed
through walls.
Insulate lines inside the building to
provide protection from heat and
vapour diffusion.
Blow-off and drainage lines must
converge in one container that can
hold the maximum possible expan-
sion volume of the heat transfer
medium.
Fill the brine circuit with Viessmann
heat transfer medium.