Viessmann VITOCAL 222-S Installation And Service Instructions Manual page 37

Connecting refrigerant lines
C Liquid line
!
Please note
Contamination (e.g. metal swarf)
or moisture must not enter the
copper pipes.
Therefore, hold the pipe open-
ings downwards or temporarily
plug them.
(cont.)
2.
2x
D Hot gas line
Note
■ The refrigerant lines of the internal unit
are filled with nitrogen, overpressure
2 bar.
■ If using Euro flanged adaptors, solder
the connections using shielding gas.
Installation sequence
1.
3.
37