Viessmann VITOCAL 222-S Installation And Service Instructions Manual page 38

Installation sequence
Connecting refrigerant lines
38
(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 locking caps from the
internal unit connections and secure
the pipe bends with the short side.
Insulate them to provide protection
from 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.