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L:\Bedienanleitungen\SOREL\DR3\DR3_2003english_040203_mb.p65
Continuation of 10.1
R1 min.
Here the minimum rotational speed of the pump at relay R1 is
determined. While setting, the pump runs at the respective
rotational speed and the flow rate can be determined.
Setting range:R1 min. 30...70%
10.2 Setting the storage priority
For programmes 6, 9, 10, 11, 13, 14, the subsequent functions
for the storage priority must be set additionally. These settings
are not important for the other programmes.
Interruption
The charge of the lower-level storage tank will be interrupted
after the period set here. This is to prove if the collector can
reach a temperature level which makes a charge in the prior
storage tank possible shortly afterwards. If the conditions for the
charge of the prior storage tank or for a further interruption will
not be fulfilled, the charge of ther lower-level storage tank will be
released again and after the period set here interrupted again
for the current temperature increase of the collector to be
regarded.
Setting range:5...90min. Default value: 10min.
Temp.-increase
Here the necessary temperature increase of the collector must
be set for an exact setting of the charge priorities at devices with
several storage tanks. While doing this, the interruption of the
charge of the lower-level storage tank is prolonged by one minute
as the temperature level of the collector can probably make a
charge into the prior storage tank possible shortly afterwards. If
the temperature increase falls below the set value, the charge of
the lower-level storage tank will be released and interrupted again
after the beforehand set time for the current temperature increase
of the collector to be regarded.
Setting range:1...10K / min. Default value: 3K / min.
10.3 Activating and setting the start help funct.
Usually, this function is not necessary for normal solar systems.
However, it can happen with some systems, in particular with
vacuum tube collectors, that the measurement coverage at the
collector sensor is too slow or too inaccurate as the sensor is not
at the warmest place. The pump will temporary get started on
certain conditions via the start help function to make a correct
measurement assimilation possible for the sensor.
Start help
If ‘yes’ is set, the function described afore will be activated and
the subsequent settings must be done.
Setting range: yes/no Default value: no
Flushing period
The pump will switch on for the time set here when the subse-
quent condition of the temperature increase at the collector
sensor is reached.
Setting range:2...30sec. Default value: 5sec.
Temp.-increase
When the temperature increase at the collector sensor reaches
the value set here, the solar pump switches on for the afore
selected flushing period to make a correct measurement
assimilation possible for the collector sensor. This is followed by
a measure and lock period of 5 minutes in which no further start
help functions can happen. If the normal switching on conditions
for the solar pump are fulfilled when measuring, the storage tank
charge will be released.
Setting range:1...10K / min. Default value: 3K / min.
05 Special function Storage priority
2x
05 Special function Start help function
3x
10. Setting the special functions
Caution: The parameters that can be set under Special functions
have a considerable effect on the safety and function of the device.
Settings and changes when switched on should only be done
by a specialist.
Submenu:
Programme selection(see further under 7.)
Rotational speed R1 (see further under 10.1)
Storage priority (see further under 10.2)
Start help (see further under 10.3)
Language selection (see further under 10.4)
Sensor adjustment (see further under 10.5)
Auto adjustment (only for the fabricator)
10.1. Adapting the rotational speed control
Rotational speed R1
If ‘yes’ is set, the pump at relay R1 is rotational speed controlled
through the DR3 controller in 30 steps. The functionality of the
speed regulation control is determined subsequently.
Setting range: yes/no Default value: no
R1 variation
There are three different control options to select from, provided
that the set T is retained constantly:
Variation 1 : The controller changes to the set R1max value after
pre-flushing. If the temperature difference between collector and
storage tank is below the set value, the rotational speed will be
reduced for one level after the control period is over. If the
temperature difference is above the set value, the rotational speed
will be exalted for one level after the control period is over. Should
the controller change the rotational speed of the pump down to
the smallest level and the T between collector and storage
sensor amounts only 1/3 of the set value, the pump switches off.
Variation 2 : like variation 1, but the controller changes
immediately to the set R1min value after pre-flushing and
changes it up again, if necessary.
Variation 3 : like variation 2, but the controller tries to retain /
reach the subsequently adjustable value „Tnom S1“ at the
collector sensor via the rotational speed control.
Setting range:Variants 1...3 Default value: Variant 1
Tnom S1 (query only with variation 3)
If this value at the collector sensor is fallen below, the rotational
speed will be reduced. In case of exceeding, the rotational speed
will be exalted.
Setting range:0...90°C Default value: 50°C
Control period
The period, which must pass by after changing the rotational
speed, must be entered before a new adjustment of the rotational
speed can happen.
Setting range:5...30sec. Default value: 8sec.
Preflushing period
For this period, the pump gets going with its full rotational speed
(100%) to guarantee a faultless start. The pump will not run with
rotational speed control until this pre-flushing period is over, and
it will change, depending on the set variation, to the R1max or
R1min rotational speed value.
Setting range:10...600sec. Default value: 15sec.
R1 max.
Here the maximum rotational speed of the pump at relay R1 is
determined. While setting, the pump runs at the respective
rotational speed and the flow rate can be determined.
Note: The given values are just guiding values, which can differ
more or less intensely depending on device and pump.
Setting range:R1 max. 70...100%
Default value: R1 max. 100%
05 Special functions Select with or
Confirm with
1x
2x
3x
4x
5x
6x
05 Special function Rotational speed R1
1x
7


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