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

Connecting refrigerant lines
C Liquid line
!
Please note
No contamination (e.g. metal
swarf) or moisture should enter
the copper pipes.
Therefore, hold the pipe open-
ings downwards or temporarily
plug them.
(cont.)
2.
2x
D Hot gas line
Note
■ The internal unit refrigerant lines are
filled with nitrogen, overpressure
2 bar.
■ If using Euro flanged adaptors, solder
the connections using shielding gas.
Installation sequence
1.
3.
37