8
Changing parameters and performance of systems
Several parameters for each system can be changed during and after the installation.
For a complete understanding of how these parameters aect the performance of the
roof and ground system, please refer to Appendix B: “How it works”.
Only change the DEVIreg™ 850 parameters if you are aware of the eects of
your actions. Reference: Appendix A: Installer menu
Roof system
Melting temperature
Changing the melting temperature will aect when the system is activated in case of
moisture and low temperatures.
The factory setting is 1.5°C. This means that the heating system will be activated if the
temperature falls below 1.5°C and moisture is detected.
Moisture level
The “moisture level” decides when the system detects moist.
The factory setting is 50 (on a scale from 5 to 95). The lower the setting, the more sensi-
tive the system is to moisture.
Post-heat
Once the sensor has detected that the roof/gutter is dry and free of ice and snow the
system will keep heating for another hour (default). If you wish to increase/decrease
this time see appendix A: Installer menu.
The factory setting is 1 hour (on a scale from 0 to 9 hours)
Priority
When using the DEVIreg™ 850 as a dual or combi system, it is possible to prioritize the
systems. When the priority of 2 systems is equal, both systems can heat at the same
time. If the priority of the 2 systems diers, and both systems want to heat, only the
system with the highest priority is allowed to heat.
The factory setting is 1 (highest priority) for all systems.
Clogged drain
It is possible to enable and disable the “Clogged drain warning”.
The factory setting is “Warning On”.
System and sensor name
It is possible to change the names of the system and connected sensors (see appendix
A: Installer menu.
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