Europe Function; Heat Exchanger Anti-Icing Function - Buderus Logamatic SC40 Installation And Servicing Instructions

Service level menu (for qualified heating engineers only)
7
7.5.23 S. Europe function
Menu: Service > Settings > Med climate function
The Mediterranean climate function is intended solely for use in regions where higher temperatures
generally mean that there is little or no risk of frost damage.
If the collector temperature falls below 5 °C when the Mediterranean climate function is active, the
solar pump is switched on. This means that hot water from the cylinder is pumped through the col-
lector. When the collector temperature reaches 7 °C, the pump is switched off.
Warning: risk of system damage due to frost!
The Mediterranean climate function does not offer an absolute guarantee of protec-
tion from frost damage.
V Only use the function in regions with very low risk of frost.
V If necessary use a water/glycol mixture as solar fluid.
Setting range
Yes/No
Tab. 36
7.5.24 External heat exchanger anti-icing system
Menu: Service > Settings > Ext. heat exchanger anti-icing
The anti-icing function is intended for solar thermal systems which have long pipe lengths in areas
exposed to frost and transfer solar heat via an external heat exchanger.
If the flow temperature of the external heat exchanger drops below 10 °C, a bypass valve diverts the
solar fluid to bypass the heat exchanger. The solar fluid is directed into the collector and is heated
further. Upwards of a flow temperature of 15 °C, the solar system is connected through to the heat
exchanger again.
Fit the bypass valve so that the fluid flow is directed through the external heat exchanger when the
valve is de-energised and bypasses the heat exchanger when the valve is energised.
Warning: risk of frost damage to heat exchanger!
V Fit valve with a positioner that achieves a switching time of less than 45 seconds.
Setting range
Yes/No
Tab. 37
66
Default setting
No
Default setting
No
Logamatic SC40 - Technical specifications are subject to change without prior notice.
New setting
New setting