Viessmann Vitosol 100-FM Technical Manual page 33

Solar control units
(cont.)
Systems with additional Viessmann control units
R1-R6 AC 250V 0.8 A
R7 AC 250V 4(2) A
A
T40
IP20
230V ~ 50-60 Hz
P = 3VA
B
C
D
E
A Wiring chamber of the solar control unit
B Contactor relay
C Resistor (on site) for
PTC: 560 Ω
NTC: 8.2 kΩ
(subject to the type of boiler control unit)
D To the boiler control unit; connection for cylinder temperature
sensor
E Cylinder temperature sensor of the boiler control unit
F Transfer pump
S1
R1
External heat exchanger with Vitosolic 200
In systems with several consumers, either an individual consumer or
all consumers can be heated via the external heat exchanger.
VITOSOL
Mains
Réseau électrique
6.3 A (slow)
Red eléctrica
230V
L
N
29 30 31 32 33 34 35
N N N N N
L
N
?
M
1~
F
S2
R2
The transfer pump starts at an adjustable time if the DHW cylinder
has not reached 60 ºC at least once per day.
A resistor simulates a DHW temperature of approx. 35 ºC.
The transfer pump is connected to relay output R3 or R5, irrespec-
tive of which relays are already assigned standard functions.
External heat exchanger with solar control module
&
sF
/
%
sS
The DHW cylinder is heated via the heat exchanger. The secondary
pump sS starts in parallel with solar circuit pump sF.
If an additional temperature sensor / is used, secondary pump sS
starts when solar circuit pump sF is running and the required tem-
perature differential between sensors % and / is given.
External heat exchanger with Vitosolic 100
The DHW cylinder is heated via the heat exchanger. Secondary
pump R2 starts in parallel with solar circuit pump R1.
The consumers will be heated up to the selected set temperature
(delivered condition 60 °C).
6
VIESMANN
33