Viessmann Vitocal 242-S Installation And Service Instructions Manual page 26

Installation sequence
Connecting refrigerant lines
D
2.
2x
D
Fig. 18
Liquid line
C
Hot gas line
D
26
(cont.)
D
C
1.
C
3.
C
1. Undo nuts from refrigerant connections
and slide onto the supplied pipe bends.
2. Flare the pipe ends of the supplied pipe bends on
the short side.
Note
Flare the pipe end of the hot gas line by
approx. 0.5 mm.
3. Remove the caps on the connections of the internal
unit. Secure the short side of the pipe bends to the
connections. Fit insulation to prevent heat and
vapour diffusion.
Note
■ The long side of the pipe bends must point
upwards.
Pipe bends must not be skewed. Check the flared
■
connections for firm seating.
4. Slide the supplied union nuts (
UNF for hot gas line) over the open end of the
⅞
pipe bends.
C and D
UNF for liquid line,
⅝