Rotex Controller Series, Продуктовая документация

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EbV Product documentation THETA NORM/UNIT
8-36
Temperature
assessment: Mode of temperature assessment
This function determines the type of temperature assessment in the DHW tank.
Usually an electronic temperature probe (immersion sensor in the hot water tank)
is used for this purpose. The temperature-dependent electric resistance of the probe
is utilized.
Alternatively, hot water provision can also be controlled by a mechanical temperature
controller (
Thermostat switching contact). A hot-water thermostat is connected to
tank sensor input DHWS and set to the required nominal temperature. When the
thermostat request energy via the tank sensor input (contact closed), the tank is
loaded with hot water at the set hot water maximum temperature until the contact
opens again.
Note: In case of DHW control via thermostat the current water heater temperature can no
longer be detected and hence does not appear in the system information. The
desired water heater daytime temperature is not callable at the user level.
Maximum
Temperature:
Domestic Hot Water-maximum temperature:
This function limits the temperature in the DHW tank according to the
aforementioned set value. The desired water heater daytime temperature to be set
at the user level is limited by this parameter.
CAUTION Hot water maximum temperature limitation is function protecting the tank and
terminates hot water loading into the tank. The tank loading pump is switched off
immediately when the maximum temperature is exceeded. In this case it cannot be
ensured that the set extended running time is adhered to.
Note: If a DHW thermostat is used to determine the water heater temperature, this function
is not active.
Operating Mode: DHW Operating Mode
With this function it is set how the heating system reacts to a heat demand from the
DHW tank. There are 5 different settings.
Parallel mode
During tank loading the heating circuits remain operative.
Priority Mode:
During tank loading the heating circuits are put out of function. They are restarted as
soon as the DHW loading pump extended running time is over.
If the DHW setpoint is not reached after 4 hours, an alarm is indicated on the display.
Operation:
Note on operation Key / parameter tree Parameter
Mode of temperature assessment
DOMESTIC HOT WATER PARAMETER 05
Operation:
Note on operation Key / parameter tree Parameter
Setting DHW
Maximum temperature
DOMESTIC HOT WATER PARAMETER 06