Viessmann vitodens Technical Manual page 87

System design 15
Vitodens 300 (from 49 kW) with/without DHW heating with three or more heating circuits with mixer and low loss header
A
B
R
P
O
M
N
A Vitodens 300 (from 49 kW) with
weather-compensated control unit
and LON communication
B Outside temperature sensor
C Vitotronic 050 (type HK3W)
D Maximum temperature limiter
E Flow temperature sensor
VITODENS
B
C
LON
D
E
E
F
F
H
G G
K
L
F Heating circuit pump
G Extension kit for one heating circuit
with mixer
H Regulating valve
K Flow temperature sensor for
low loss header
L Low loss header
3.2 Installation examples
E
F
G
M Primary pump (boiler circuit)
N Cylinder loading pump
O Cylinder temperature sensor
P DHW cylinder
R Internal extension H 1 or H 2
or
external extension H 1
System design 15
300
87
3