Viessmann Cascade control unit - Page 24

24
Functions
Set flow temperature (cont.)
Set values (multi-boiler control unit)
In most cases, this value represents the set room
temperature in standard mode.
Generally with radiator systems, this value
corresponds to the low end temperature.
A higher setting is recommended for convector
heating systems.
Design temperature according to the climatic
zone.
Max. required flow temperature in accordance
with the size of the heating surfaces.
Adjust the slope factor of the heating curve in
line with the heating surfaces used.
In the "as-delivered condition", this value is set
to 1.33 (radiator heating system).
Standard values for the slope factor:
H Radiator heating system: 1.25 to 1.35
H Convector heating system: 1.40
H Underfloor heating system: 1.10
Minimum flow temperature.
Maximum flow temperature.
5862Ă474ĂGB
Outside temp.
low end 20ºC
Flow temp.
low end 20ºC
Design temp.
outside ć10ºC
Design temp.
flow 80ºC
Heating curve
slope 1.33
Flow temp.
minimum 1ºC
Flow temp.
maximum 74ºC