Viessmann Vitotwin 300-W Installation And Service Instructions For Contractors page 8

Preparing for installation
Preparing for installation
System version 1, ID: 4605451_1201_02
System with multi mode heating water buffer cylinder
Hydraulic installation scheme
22
E
20
kW
HV1 N/A
8
(cont.)
21
4
HV1
WW/Z
5
--2B/B3--
6
HV2/HR1
--2B/B4--
HR2
8
HR3
--2B/B42--
kW
--2B/B41--
HVS/HRS
7
3 A
1
3 B
2 B 2
WW/Z DHW/DHW circulation
41
40
42 --41/2--
--41/20--
43
--41/52--
44