Rotex Controller Series, Продуктовая документация

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EbV Product documentation THETA NORM/UNIT
8-42
Priority mode DHW
If the temperature in the DHW tank (DHWS) sinks under the nominal DHW-value by
the set value during priority solar loading, the solar priority mode is switched off until
the nominal DHW-value is reached.
Example:
DHW setpoint 50°C
Set value changeover: 10K
=> The heat generator is only required when the actual DHW temperature drops
below 40°C.
Priority mode buffer
If the temperature in the buffer tank (BU) sinks under the nominal buffer value by the
set value during priority solar loading, the solar priority mode is switched off until the
nominal buffer value is reached.
Example:
Nominal value to buffer of HCs: 45°C
Buffer parallel shift:
10K
Set value changeover: 20K
=> The heat generator is only required when the buffer temperature drops below
35°C.
Heat balance: Heat balancing is activated through this parameter setting. The user can select
between flow calculation via the pump running time and determination of the flow
volume via the pulse signal input of the device, if such input is available. Any
commercial flow meter can be connected to the pulse input.
Reset
heat balance:
Reset heat balance (only if heat balancing is activated)
If the heat balancing is active, the counter can be reset with this parameter.
Volume flow: Volume flow (only with heat balancing enabled)
This setting allows choosing between volume flow computed in
• liters/minute for calculating the flow volume or
• liters / pulse when using the pulse input
corresponding to the respective pumping capacity of the solar loading pump.
NOTE: If the adjustment is 0, there is no heat balance!
Fluid density: Density medium (only if heat balancing is activated)
This parameter defines the fluid density according to the manufacturers data.
Fluid heat capacity: Specific heat capacity medium (only if heat balancing is activated)
This parameter defines the specific heat capacity for the correct calculation of the
heat balance. The data is supplied by the fluid manufacturer.
NOTE: The physical data Volume flow , density and specific heat form the basis for the
calculation of the solar energy balance and the solar capacity and are calculated
according to the mathematical correlation
W = (V / t) ·rw · cw · Du · t
SOP
The results can be seen in the information level.