Viessmann Vitocal 242-S Installation And Service Instructions Manual page 12

Preparing for installation
System example, ID: 4605415_1202_02
Hydraulic installation scheme
44
45
42
49
----2/212.4--
43
-2/212.3-
29
27 28
Note
In cooling mode, safeguard the minimum flow rate in the secondary circuit. Open
valves on the heating circuit distributor fully and permanently or install an overflow
valve.
12
3
--2/F13--
DHW
37
12
1
13
-2/212.4-
30
41
CW
5 4
6
8
(cont.)
-8/145-
91
-2/X3.8;3.9-
--105/2--
90
-105/20--76-
A1
--2/212.2--
96
--105/52--
62
18
-2/X3.8;3.9-
89
--
-2/X3.3;3.4-
15
60
89
--2/211.5--
2
105
-8/145-
71
83
73
70
M2
74
--74/20--
76
77
61