Viessmann Vitodens 200-W B2HA series, Application Manual

Page: 48 / 80

44
Vitodens 20
0-W
P1
P2.1
P4
P2
P3
Application 5
Application Code
VD2I 3HC/ZC3ZP
.0
1
Notes / Comments
1.
A thermost
atic mixing v
alv
e ma
y be required on the
radiator loop to pre
vent e
xcessiv
e hot w
ater supply to
the circuit when the DHW is calling f
or heat.
2.
Component Inde
x on pages 5.
3.
When the indirect DHW t
ank is part of the sy
stem
load, consideration must be giv
en to the siz
e of the
boiler in order to allo
w f
or simult
aneous operation of
space heating and DHW
.
Pressure Drop / P
ump Sizing
Vitodens 20
0-W
19 & 20
B2HB 1
9-57
Vitodens 20
0-W
21 & 22
B2HA 80-1
50
HC2
ZC1
Page