MAINE ENERGY SYSTEMS PES 20, Operating Manual

Page: 48 / 102

15.2 Solar circuit
Solar circuit 1 and 2 are in menu Solar.
Solar circuit has following menu items:
• Operation Mode
• ACC Temp Max
• ACC Hysteresis
• Collector Hyst On
• Collector Hyst Off
Off:
On: No charge
Charge as long as
Collector tempe hysteresis is lower than the
temperature of the Adj ACC sensor below or the ACC temp max
If the temperature in the ACC is higher than the ACC temp Max, the solar pump
switches off. The limit sensor measures the temperature in the ACC.
The solar circuit pump is switched off due to the ACC temp Max is reached. The
temperature must fall under ACC temp Max minus hysteresis, then the solar cir-
cuit pump switches on again. The hysteresis prevents a solar pump cycling (On
Off On Off).
If the temperature differnce between the collector sensor and TPU, ACC lower
sensor is higher than the Coll Hyst A, the solar pump switches On.
If the temperature differnce between the collector sensor and TPU, ACC lower
sensor is lower than the Coll Hyst A, the solar pump switches Off.
The menu Pumptype contains the following modes:
Asynchronus: Asynchronus pump – direct output 230VAC on/off
Async.Regulated: Asynchronus pump – pulsed output 230VAC
Heating Efficient: PWM1 - PWM signal inverted
Solar Efficient: PWM2 - PWM direct signal
Note:
When using a A-class pump as Accumulator pump the pump cannot be re-
gulated from Solar circuit 2.
Material damage by false selection of pump!
PE 568 USA 2.0
48 Solar circuit