DE DIETRICH DIETRISOL TRIO DT 250 - TRIO DT 350 - Manual (Page 13)

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17/10/12 - 300028005-001-03 TRIO DT 250 - TRIO DT 350
„ Measured value TC - Collector temperature
The value TC shows the temperature in °C given by the collector
sensor in real time.
„ Measured value TS - DHW sensor temperature
The value TS shows the temperature in °C given by the tank sensor
in real time
„ Measured value kWh - Amount of heat
The value kWh shows in kWh the total amount of heat produced by
the installation since the regulator was put into service.

The quantity of heat (kWh value) can only be used for checks
carried out for personal reasons.
„
Measured value tc - Self-calibration time
The value tc shows the self-calibration phase time remaining in
seconds. During the self-calibration phase, the pump operates at full
speed (100 %); its speed is only controlled after the self-calibration
phase.
„ Measured value TM - Additional temperature
An optional additional temperature sensor can be connected to
terminals 7 and 8. For example: Temperature in the top of the
calorifier.
„
Adjustment parameter ANL -Type of installation
The adjustment parameter ANL is used to select the following
installation configurations:
ANL 1 = Installation 1:
- Preparation of domestic hot water using a DIETRISOL TRIO
calorifier.
- Preparation of domestic hot water using a tank with 2 exchangers
connected to the solar circuit.
ANL 2 = Installation 2:
Solar installation for the preparation of domestic hot water with a DC
mixed calorifier and for heating back-up with temperature control on
the heating return circuit. The temperature control on the heating
return circuit prevents the boiler having to maintain the temperature
of the back-up volume in the calorifier in the event of prolonged
absence of sunshine.
„
Adjustment parameter DO - Temperature
difference enabling the passage of the heating
return via the solar tank
Adjustment range: 0.5 ... 19.5 K
Factory setting: 6 K
The parameter DO is used to set the temperature difference above
which heating return is directed via the 3-way valve to the solar tank.
Heating return thus passes via the solar tank if the solar tank
temperature is higher by at least 6°C than the heating return
temperature.

If the parameter ANL is set to 1 (installation 1), the parameter
DO is deactivated
„
Adjustment parameter DF - Temperature
difference enabling heating return directly to the
boiler
Adjustment range: 0.4 ... 19.5 K
Factory setting: 4 K
The parameter DF is used to set the temperature difference below
which heating return is directed from the 3-way valve directly to the
boiler. The solar energy stored in the solar tank is insufficient to
reheat the heating return. Heating return is thus directed directly to
the boiler if the solar tank temperature is lower by at least 4°C than
the heating return temperature.

If the parameter ANL is set to 1 (installation 1), the parameter
DF is deactivated