Viessmann VITOCAL 242-S Installation And Service Instructions Manual page 25

Connecting refrigerant lines
Routing refrigerant lines
Type AWT-AC
Refrigerant lines
Min. line length
Max. cable length
Max. height differential internal
unit – external unit
Note
No topping up is required for line lengths
between 3 and 12 m.
internal unit above external unit
A
C
B
Heating mode
A Internal unit
B Hot gas line
C Liquid line
(cont.)
241.A04
3 m
20 m
10 m
D D
E
D External unit
E Oil lift bends
Installation sequence
241.A07 241.A10
241.B10
3 m 3 m
30 m 30 m
15 m 15 m
241.A13
241.B13
3 m
30 m
15 m
25