Viessmann VITOSOLIC 200 Installation And Service Instructions Manual page 16

System examples
System example 2
Central heating without solar energy
Three-way diverter valve R6 rZ remains
at zero volt (position "AB-B") if the tem-
perature differential between buffer cyl-
inder temperature sensor S5 rE and
heating circuit return temperature sensor
S6 rT is less than temperature differen-
tial ΔT6off. There will be no flow through
heating water buffer cylinder rP.
16
(cont.)
Boiler 1 supplies the heating circuit
with heat according to the heating curve
set at boiler control unit 2.
A low loss header 6 with flow temper-
ature sensor 5 is required in conjunc-
tion with a wall mounted oil/gas
boiler.