Viessmann Vitosol100 - H Dual Mode DHW Heating with DHW Cylinders Vitocell B 100 or Vitocell B 300, with Vitosolic 200

4.1System design1  with Vitosolic 200
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VITOSOL
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.
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 T
on
is
measured between collector temperature
sensor 2 and cylinder temperature
sensor 3.
Pump 4 is switched OFF when:
H the actual temperature falls below
shutdown temperature differential
T
off
H the electronic temperature limit (safety
shutdown at 90 ºC) set at the control
unit or that set at the high limit safety
cut−out (if required) is exceeded.
The additional function requirements (see
page 60) are met by circulation pump 8.
Installation diagram
A Solar panel
B DHW circulation pump
C DHW circulation output of the boiler
control unit or on−site time switch
D Oil and gas fired boilers
E DHW cylinder
F Junction box (on site)
5822135 GB
2
28
5
21
A
DE
4
5
6
VL RL
3
B
8
KW
C
WW
7
F
GND S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 CS10 −−−− Imp1 Imp2 145 145
R4
LN
R6−A R6−R R5−R R5−A R3 R2 R1 R7−A R7−M R7−R
1