11
1.6 Adjuster code 1
Adju-
ster
Hy-
draulic
Function Setting
range
Factory
setting
Unit Basic setting
Dat.:
Adaptation
Dat.:
08-15 all Start-up help on/off on -
In some systems the collector temperature may not be properly recorded on start up. In the "on" position a sart up
programm for the pump is activated enabling a very accurate reading to be taken by the sensor.
In this programm the solar pump switches on for 30 seconds and then the pump switches off. The temperature at
the collector is measured immediately. If the temperature difference is sufficient, the solar pump switches on. If the
swithing - on - conditions are not reached, the solar pump becomes switched on again, after a variable period of
time ( between 15 minutes and 100 minutes) for another period of 30 seconds.
The variable period is set by the conditions of the actual collector temperature and the temperture changes.
08-20 all
P range (Xp) collector controller pump
steering
10÷50 20 K
The collector controller has a PID control. The set P range determines at which set value deviation 100% adjusting
command for the speed control is generated.
08-21 all Response time (Tn) collector controllers 0÷30 10 min
The response time influences the speed with which the speed control adjusts a deviation between set and actual
values. The setting determines after how many minutes the double value of the difference from the minimum setting
value (08-35) is demanded.
08-22 all Derivative time (Tv) collector controller 0÷10 0 min
With the derivative time, a differential share can be allocated to the speed control. The actual increase of the col-
lector temp. multiplied by the derivative time gives the change in setting for the speed control.
With the derivative time, the controller makes a forecast of the deviation from the set temperature and corrects
the expected deviation correspondingly, i.e. it makes the correction before the deviation from the set value has de-
veloped. Time horizon of the forecast = derivative time.
08-30 all Solar nominal performance collector 1 1÷50 8 kW
Solar nominal performance is based on the actuel panel performance taking the flow settinge (08-37) into account.
This value is used to calculate the relative solar performance. During solar charging the actual solar performance
(n x c x V x dT) is compared to the nominal performance. Depending on the actual panel performance the controller
will modulate the pump speed and controller flow, thus increasing the performance and efficiencyof the solar sy
-
stem.
To calculate the solar nominal performance in your system, you can take 0.6 kW per square meter of collector.
Note: n = actual set value
c = heat capacity medium collector circuit (8-09)
V = volume at 100% speed (8-37)
T = temperature difference collector B1 / tank B2
08-35 all Min. set value collector pump 1 5÷100 50 %
Minimum set value for the speed control of the collector pump 1
SET
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