Viessmann Vitotwin 300-W Installation And Service Instructions For Contractors page 26

Preparing for installation
Preparing for installation
System version 4, ID: 4605499_1201_01
System with solid fuel boiler, heating water buffer cylinders and DHW cylinder
Hydraulic installation scheme
21
5
--2B/B3--
20
kW
Equipment required
Pos. Designation
1 Vitotwin 300 W
with
2 Weather-compensated control unit
26
(cont.)
3 A
4
3 B
--31/S2--
6
--2B/B4--
7
1
--2B/B42--
9
--2/QX3-- --2B/B41--
8
2 A 2 B
2
42
--41/52--
44
32
33
30
30
31
41
40
--41/2--
43 --41/20--
16
15
14
--11/X3./5.6--
34 17
13
18
10
11