Viessmann VITOCAL 300-G PRO Installation And Service Instructions Manual page 48

Installation sequence
Hydraulically connecting the primary/secondary...
Fitting the Victaulic couplings
C
PN10
D
220 / 300
1. Clean all Victaulic connections.
2. Open Victaulic coupling B around
1 cm.
3. Push Victaulic coupling B with
inserted gasket as far as far as it will
go onto connection pipe A inside the
heat pump.
Connecting the primary circuit
!
Please note
The components used must be
resistant to the heat transfer
medium.
Never use zinc-plated/galvan-
ised pipes.
48
B A
4. Push connection pipe C (connec-
tion set) or adaptor with flange D
(flanged Victaulic adaptor set) as far
as it will go into Victaulic coupling
B.
5. Close Victaulic coupling B flush and
tighten until there is no more gap.
6. Carry out a pressure test.
1. Equip the primary circuit with an
expansion vessel and safety valve (in
accordance with DIN 4757).
(cont.)