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Setting parameters
0A Set differential temperature function 3 or 4
Display
6.0 K
... K
0B Controller amplif. function 3 or 4
Display
2.0 %/K
... %/K
0C Reset time function 3 or 4
Display
30 s
... s
0D Set differential temperature function 5 or 6
Display
11.0 K
... K
(cont.)
Value
0A:60
0A:0
to
0A:255
Value
0B:20
0B:0
to
0B:100
Value
0C:10
0C:0
to
0C:255
Value
0D:110
0D:0
to
0D:255
Commissioning and adjustment
Explanations
Set temperature differential value for functions 3 and
4:
Function 3:
■
Set value for temperature differential between boil-
er return temperature (upstream of low loss header)
and system return temperature (downstream of low
loss header)
Function 4:
■
Set value for temperature differential between boil-
er flow temperature (upstream of low loss header)
and system flow temperature (downstream of low
loss header)
The circulation pump speed controls the temperature
differential set here. This differential temperature con-
trol is useful only in conjunction with immersion tem-
perature sensors.
≙
1 step
0.1 K
Explanations
Controller amplification for functions 3 and 4
The higher the value set here, the more strongly the
controller will react to deviations from the set differen-
tial temperature specified at parameter "0A".
≙
1 step
0.1 K
Explanations
Controller reset time for functions 3 and 4
The greater the reset time, the more stable but slow-
er the controller.
≙
1 step
3 s
Explanations
Set temperature differential between the set boiler
water temperature and set buffer temperature for
functions 5 and 6.
The circulation pump speed controls the buffer tem-
perature so that the buffer temperature remains be-
low the boiler water temperature by the temperature
differential set here.
If the temperature differential set here is not met, the
circulation pump speed decreases.
≙
1 step
0.1 K
27
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