12
3.3.6 SETTING THE
TEMPERATURE
Press the
key until the
selector lamp is illuminated, then press the
or
keys to set the Delta T (minimum 4°C, m20°C).
3.3.7
Setting the Frost Protection temperature / Storage Tank Limit Temperature
Note that the unit must be in PROGRAMMING MODE, (keypad lock disabled)
in order to change both values.
1
To adjust TF, first make sure that the display select indicator is at
. Now
press the hidden TF adjust key (see section 3.1 diagram for location of key)
and the current TF value will be displayed, (-30°C to +3°C).
2
Use the
keys to adjust this value.
3
Press the
key to exit and accept the new value.
4
Press the hidden TF adjust key a second time. The tank safety temperature
will be displayed (+60°C to +90°C).
5
Use the
keys to adjust this value.
6
Press the key to exit and accept the new value.
The unit can then be brought out of PROGRAMMING MODE pressing and
holding the select key for eight seconds. The display selector lamp will cease
to flash as the unit is now in DISPLAY MODE.
3.4
ADDITIONAL FEATURES
3.4.1 MAXIMUM AND MINIMUM RECORD TEMPERATURES
The maximum and minimum Collector and Tank temperatures may be
displayed by pressing and holding the
key for 3 seconds. Ensure that the
or
selector lamp is selected. The display will show the maximum
temperature reached since the unit was reset. This may be reset to the
present Collector or Tank temperature by pressing the
key whilst viewing
the maximum recorded temperature (while the
key is pressed). To view
the maximum ever recorded temperature, continue to press the
key for a
further 8 seconds after the maximum temperature has been read (an “F”
indicates that a sensor fault or temperature above 100°C has occurred in the
unit’s history).
The minimum Collector and Tank temperatures may be displayed in the same
manner only using the
key. To reset proceed as above.
The hysteresis has been increased to ± 2°C.
The pump will switch off if the Tank temperature reaches 90°C and back on
again when the tank temperature drops to 86°C. As before, the pump will run
if the Collector sensor registers a temperature above 99°C, until the Tank
reaches 90°C. The tank safety temperature has priority over all other
settings.
