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10
4.1.7
∆
T-regulation
Type of antifreeze:
0 : water
1 : propylene glycol
2 : ethylene glycol
3 : Tyfocor
®
LS / G-LS
kWh/MWh:Heat quantity
in kWh / MWh
Display channel
MEDT: Type of antifreeze
Adjustment range 0 ... 3
Factory setting 1
MED%: Concentration of
antifreeze in (Vol-) %
MED% is blinded out by
MEDT 0 and 3.
Adjustment range 20 ... 70
Factory setting 45
The heat quantity transported is measured by the indication
of the volume flow and the reference sensor of feed flow
S1 and return flow S4. It is shown in kWh-parts in the in-
dication channel kWh and in MWh-parts in the indication
channel MWh. The sum of both channels form the total
heat output.
The heat quantity added up can be reset. As soon as one
of the display channels of the heat quantity is selected, the
symbol
is permanently shown on the display. The button
SET (3) must be pressed for approx. 2 seconds in order to
get back into the RESET-mode of the counter. The display-
symbol
is flashing and the value for heat quantity will be
set to 0. In order to finish the RESET-procedure, the button
must be pressed for con firmation.
In order to interrupt the RESET-procedure, no button
should be pressed for about 5 seconds. The controller re-
turns automatically into indication mode.
Please note: Switch-on temperature difference DO must
be at least 2 °Ra higher than the switch-off tempe rature-
difference DF.
DT O:
Switch-on temperature
Adjustment range
2,0 ... 40,0 °Ra
Factory setting 12.0
DT F:
Switch-off temperature diff.
Adjustment range
1,0 ... 38 °Ra
Factory setting 8.0 °Ra
Primarily the controller works in the same way as a standard
differential controller. If the switch-on difference (DT O)
is reached, the pump is activated. If the adjusted switch-off
temperature is underrun (DT F), the controller switches-
off.
4.1.8 Maximum tank temperature
If the adjusted maximum temperature is exceeded, a further
loading of the tank is stopped so that a damaging overheating
can be avoided. If the maximum tank temperature is
exceeded, on the display is shown and .
Please note: The controller is equipped with a security-
switch-off of the tank, which avoids a further loading of the
tank if 203 °F are reached at the tank.
S MX:
Maximum tank temp.
Adjustment range
40 ... 205 °F
Factory setting 140 °F
4.1.9 Limit collector temperature
Collector emergency shutdown
If the adjusted collector limit temperature (EM) is exceeded,
the solar pump (R1/R2) is deactivated in order to avoid a
damaging overheating of the solar components (collector
emergency shutdown). The limit temperature is set to
285 °F but it can be changed within the adjustment range of
230 ... 400 °F. In the display is shown (flashing).
EM:
Limit collector temperature
Adjustment range
230 ... 400 °F,
Factory setting 285 °F
