Viessmann VITOCAL 242-S Installation And Service Instructions Manual page 30

Installation sequence
Connecting refrigerant lines
C Liquid line
!
Please note
Ensure that no contamination
(e.g. metal swarf) or moisture
enters the copper pipes.
For this, hold the pipe openings
downwards or temporarily seal
them with a plug.
30
(cont.)
2.
2x
D Hot gas line
Note
■ The refrigerant lines of the internal unit
are filled with nitrogen; overpressure
2 bar (0.2 MPa).
■ If flanged Euro adaptors are used,
braze the connections using a shield-
ing gas.
1.
3.