Pump 2 Speed Modulation/Plate Heat Exchanger; Pump 2 Minimum Output/Plate Heat Exchanger - Buderus Logamatic SC40 Installation And Servicing Instructions

Service level menu (for qualified heating engineers only)
7
7.5.17 Solar system pump 2 speed modulation/Plate heat exchanger
Menu: Service > Settings > Solar system pump 2 speed modulation/Plate heat
exchanger
Warning: risk of damage to system due to pump failure.
V Connect pump to output R2.
V If a pump with internal electronic control circuitry is connected, deactivate the
speed modulation function on the controller.
The speed modulation function improves the efficiency of the solar thermal system by keeping the
temperature difference between the relevant sensors within the set cut-in temperature differential.
If the "Double match flow" function is active, the pump speed is controlled by that function. We rec-
ommend leaving this setting activated.
Setting range
Yes/No
Tab. 30
7.5.18 Solar system pump 2 minimum output/Plate heat exchanger
Menu: Service > Settings > Solar system pump 2 minimum output
This setting determines the minimum speed of solar system pump 2.
In systems with external heat exchanger and 2 heat consumers or systems with external heat
exchanger and East/West aspect function, the pump is run at 100 %.
The minimum pump output for solar system pumps 1 and 2 is always the same with configurations
T3, T7 and H3 (if the minimum output for one pump is changed, the controller sets the others to the
same output).
Setting range
30 - 100 %
Tab. 31
62
Default setting
Yes
Default setting
50 %
Logamatic SC40 - Technical specifications are subject to change without prior notice.
New setting
New setting