H Dual Mode Dhw Heating With Dhw Cylinders Vitocell B 100 Or Vitocell B 300, With Vitosolic 200 - Viessmann Vitosol
100 Technical Manual

Dual mode DHW heating with Vitocell B 100 or Vitocell B 300 DHW cylinder, with Vitosolic 200
DHW heating without solar energy
The upper indirect coil of the DHW
cylinder is heated by a boiler. The cylinder
thermostat with cylinder temperature
sensor 6 of the boiler control unit
switches cylinder loading pump 7.
Installation diagram
1
WW
C
28
5
6
21
D
A Solar panel
B DHW circulation pump
C DHW circulation output of the boiler
control unit or on−site time switch
VITOSOL
DHW loading with solar energy
Solar circuit pump 4 is switched ON and
the DHW cylinder is loaded, if a
temperature differential higher than
start−up temperature differential DT
measured between collector temperature
sensor 2 and cylinder temperature
sensor 3.
B
5
8
7
3
E
D Oil and gas fired boilers
E DHW cylinder
4.1 System design 1
Pump 4 is switched OFF when:
H the actual temperature falls below
is
on
H the electronic temperature limit (safety
The additional function requirements (see
page 60) are met by circulation pump 8.
L N
F
A
2
4
VL RL
KW
F Junction box (on site)
with Vitosolic 200
shutdown temperature differential
DT
off
shutdown at 90 ºC) set at the control
unit or that set at the high limit safety
cut−out (if required) is exceeded.
63