Rotex Controller Series, Продуктовая документация

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EbV Product documentation THETA NORM/UNIT
8-41
Switch-off differential: Solar switch-off differential (SD
OFF
)
If the temperature difference between panel flow and buffer tank falls below this
adjusted differential, the pump will be switched off and the loading terminated. The
maximum value is always 3K below the switch on differential.
Minimum running
time: Minimum running time solar charging pump (SOP)
The solar pump remains running for this adjusted time. The minimum running time
has
priority over the switch off differential.
Solar panel max: Solar panel maximum limit
This limit serves for the thermical protection of the solar panel/s. It activates the panel
pump if the adjusted temperature is exceeded. If the panel temperature falls below
the adjusted value –5K again, then all solar functions and settings will be active
again.
Tank max: Solar tank maximum limit
If the temperature in the buffer tank exceeds this limit, then even the solar panel
maximum limit function will be deactivated so that the pump switches off. This
function can be activated again as soon as the buffer tank temperature falls more
than 10K below its maximum limit.
Solar operating
mode: Solar operating mode
This function defines the loading mode.
• Solar priority mode
During solar loading the heat demand is not sent to the heat generator when it is not
active. An active heat generator stays in operation until the next switch off cycle.
• Solar parallel mode:
During solar loading the demand to the heat generator is permitted.
• Solar priority mode DHW (setpoint control)
During solar loading the demand of DHW control to the heat generator is blocked.
• Solar priority mode buffer (setpoint control):
During solar loading the demand of buffer control to the heat generator is blocked.
Inhibition H-GEN: Inhibition heat generator (noly during solar operating mode = priority mode)
The temporary interruption serves to prevent frequent switching between solar
loading and loading by the heat generator. After a solar pump switch-off the set time
has to pass before the solar buffer tank can be loaded again by the heat generator
(boiler).
Changeover
parallel:
Solar priority / parallel switchover (only with solar operating mode = priority mode)
Priority mode
When the temperature in the solar tank drops below the nominal value by this
temperature setting during priority solar loading, the system is automatically
switched to parallel operation (temporary interruption disabled, heat generator
enabled). Priority mode is activated again as soon as the tank temperature rises
above the actual setpoint plus the DHW switching differential.