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Commissioning and adjustment
Setting parameters
03 Function selec. pump
Display
None
Function 1: Speed output-controlled
18
(cont.)
Value
03:0
03:1
Explanations
Function 0:
No speed control
The boiler circuit pump is switched on via the
Vitotronic control unit when a heat demand exists.
The control voltage corresponds to the control volt-
age for the max. flow rate, and depends on the boiler
circuit pump used (see parameter "25").
Function 1:
Only in conjunction with a heating water buffer cylin-
der
A
C
B
E
A
Boiler water temperature sensor
Oil/gas boiler
B
Heating water buffer cylinder
C
Heating circuit
D
Boiler circuit pump
E
In function 1, the speed of the boiler circuit pump is
controlled subject to the current burner output.
The higher the burner output, the higher the speed of
the boiler circuit pump.
The flow rates at minimum and maximum burner
■
output are set in parameters "05" and "06".
No additional temperature sensors need to be con-
■
nected to the pump module.
D
M
§
or 3A/3B
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