Viessmann VITOCAL 242-S Installation And Service Instructions Manual page 31

Connecting refrigerant lines
(cont.)
1. Remove nuts from refrigerant con-
nections C and D 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 connec-
tions. Fit insulation to prevent heat
and vapour diffusion.
Note
■ The long side of the pipe bends
must point upwards.
■ Pipe bends must not be positioned
diagonally. Check the flared con-
nections for firm seating.
4. Slide the supplied union nuts
(⅝ UNF for liquid line, ⅞ UNF for hot
gas line) over the open end of the
pipe bends.
Installation sequence
31