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Installation
CommissioningSettingsTroubleshooting
Accessories
Display
If the switch-on difference ∆Ton SFB / boiler between sensor S1 in the SFB / boiler
and the lower store sensor (S2) is exceeded, the controller switches on the cir-
culating pump and the store is loaded. If the temperature difference between the
SFB / boiler and the lower store sensor falls below the switch-off difference ∆Toff
SFB / boiler, loading will switch off.
The lower part of the store will no longer be loaded if the SFB / boiler is blocked
(see SFB / boiler minimum and maximum limitation) or the temperature measured
at the lower store sensor has exceeded the maximum temperature. The controller
switches off the circulating pump or keeps it switched off.
Speed control
(adjustable in the Installer menu)
∆ Tset SFB / boiler
Set temperature difference
Adjustment range: 0.5 ... 50.0 K
Factory setting: 10.0 K
Rise
Rise value speed control
Adjustment range: 0.0 ... 50.0 K
Factory setting: 1.0 K
If the switch-on difference is reached, the pump switches on at full speed for 10 s.
Then, the speed is reduced to the adjusted minimum pump speed value.
If the temperature difference reaches the adjusted set temperature difference
∆Tset SFB / boiler , the speed will increase by one step (control type Std. = 10 %,
control type PWM = 1 %). If the temperature difference increases by the adjustable
value rise , the pump speed increases by another step until the maximum pump
speed of 100 % is reached.
Target temperature control
Target temperature
Target temperature for speed control
Adjustment range: 30 ... 85 °C
Factory setting: 60 °C
The controller controls the speed of the circulating pump in order to reach or keep
the target temperature at the target sensor.
If the temperature measured at the target sensor is lower than the target tempera-
ture, the circulating pump will be controlled with the minimum speed. If the temper-
ature measured at the target temperature sensor exceeds the target temperature,
the speed of the circulating pump will be increased depending on the temperature
difference to the maximum speed.
Targ. temp. sensor
Reference sensor for target temperature control
Selection: S1, S4
Factory setting: S1
The adjustment channel Targ. temp. sensor is used for selecting the sensor for
target temperature control. This way, the position of the sensor in the store fl ow
can be taken into account.
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