Vitosolic 200 Speed Control; Heat Statement With Solar Control Module And Vitosolic 100; Vitosolic 200 Heat Statement; Suppression Of Dhw Cylinder Reheating By The Boiler With Solar Control Module - Viessmann VITOSOL 100-F SV Technical Manual

Solar control units
Possible pumps:
■ Standard solar pumps with and without their own speed control
■ High efficiency pumps
■ Pumps with PWM input (only use solar pumps), e.g. Wilo or Grund-
fos pumps

Vitosolic 200 speed control

The speed control is disabled in the delivered condition. It can only be
enabled for relay outputs R1 to R4.
Possible pumps:
■ Standard solar pumps with and without their own speed control
■ High efficiency pumps
■ Pumps with PWM input (only use solar pumps), e.g. Wilo or Grund-
fos pumps

Heat statement with solar control module and Vitosolic 100

When determining thermal yields, the difference between the collector
and cylinder temperature, the set throughput, the type of heat transfer
10
medium and the operating time of the solar circuit pump are taken into
account.

Vitosolic 200 heat statement

The statement can be produced with or without the volumeter.
■ Without volumeter
through the temperature differential between the heat meter flow and
the heat meter return temperature sensor and the selected through-
put
■ With volumeter (heat meter, accessory for the Vitosolic 200)
through the temperature differential between the heat meter flow and
the heat meter return temperature sensor and the throughput cap-
tured by the flow meter

Suppression of DHW cylinder reheating by the boiler with solar control module

DHW cylinder reheating by the boiler is suppressed in two stages.
While the DHW cylinder is being heated by solar energy, the set cyl-
inder temperature is reduced. After the solar circuit pump has been
switched off, suppression remains active for a certain time.
If solar heating is uninterrupted (> 2 h), reheating by the boiler only
occurs when the temperature falls below the 3rd set DHW tempera-
ture, as set at the boiler control unit (at coding address "67") (setting
range 10 to 95 ºC). This value must be below the first set DHW tem-
perature.

Suppression of DHW cylinder reheating by boiler with the Vitosolic 100

Systems with Vitotronic control units and KM BUS
Control units from the current Viessmann product range are equipped
with the necessary software. When retrofitting an existing system, the
boiler control unit may have to be equipped with a PCB (see
Viessmann pricelist).
Reheating of the DHW cylinder by the boiler will be suppressed by the
solar control unit if the DHW cylinder is being heated.
Coding address "67" in the boiler control unit defaults a third set DHW
temperature (setting range 10 to 95 ºC). This value must be below the
first set DHW temperature.
VIESMANN
44
(cont.)
Note
We recommend operating the solar circuit pump at max. output while
the solar thermal system is being vented.
Note
We recommend operating the solar circuit pump at max. output while
the solar thermal system is being vented.
Existing sensors can be used, without affecting their function in the
relevant system scheme.
The DHW cylinder will only be heated by the boiler, if this set value
cannot be achieved by the solar thermal system.
The DHW cylinder will only be heated by the boiler (solar circuit pump
runs) if this set value is not achieved by the solar thermal system.
Systems with additional Viessmann control units
Reheating of the DHW cylinder by the boiler will be suppressed by the
solar control unit if the DHW cylinder is being heated. A resistor sim-
ulates an actual DHW temperature that is approx. 10 K higher.
The DHW cylinder will only be heated by the boiler (solar circuit pump
runs) if the set DHW temperature value is not achieved by the solar
thermal system.
VITOSOL