Bedienungsanleitung Sorel MHCC (Seite 17 von 24) (Englisch)

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Day Correction

Parallel characteristic translation

The day correction causes a parallel shift of the heating curve during daytime operating hours, because with certain outdoor tem-

peratures the building might not be optimally heated with the set heating curve. With a non-optimised heating curve, the following

situations frequently occur: hot weather = room too cold/cold weather = room too hot. In this case, the slope of the curve should

be reduced stepwise by 0.2 points and increases the day correction

by 2 ... 4 °C each.

Night Correction

Parallel characteristic translation

The night correction produces a parallel translation of the heating characteristic during the nighttime operating hours. If a neg-

ative value is set for the night correction, the reference flow temperature is lowered accordingly during the nighttime operating

hours. In this manner, primarily at night, but also during the day when no-one is at home, the room temperature is lowered, thus

saving energy. Example: A day correction of +5 °C and a night correction of -2 °C produces a reference flow temperature in night-

time operation that is 7 °C lower.

Comfort Temperature Boost

Parallel characteristic translation

The comfort temperature boost is added to the set day correction. In this manner it is possible to carry out quick heating and/or

raise the temperature of living spaces at a certain time each day.

Min. Flow

The minimum flow temperature is the lower limit of the heating curve, and by this, the reference flow temperature of the heating cir-

cuit. In addition to that, the minimal flow temperature is the reference flow temperature for the frost protection function.

Max. Flow

This value is the upper limit of the reference flow temperature of the heating circuit If however, the temperature of the heating cir-

cuit exceeds the set value, the heat circuit shuts down until the temperature falls below this value. The system purged for 30

seconds every 5 minutes.

The customer must provide an additional limiting thermostat which is connected to the pumps in series (eg underfloor

heating) for safety.

Energy Saving Mode

The Energy saving mode switches the heating on when T eco is undershot and heats up to T eco + hysteresis when solar charge

or solid fuel boiler is active.

Reference/Actual -

Switch on hysteresis for additional heating

This setting determines the allowed undershoot of the heating circuit temperature below the calculated reference fl ow tem-

perature. If the heating circuit flow temperature and the storage temperature drop below the reference flow temperature by this

value, the additional heating will start the additional heat source after a 1 minute delay.

Heat request is started when the flow temperature is continuously below reference temperature for 1 minute.

Threshold

For Energy saving mode

When Energy saving mode is active: During solar loading Threshold is used instead of TH set. When the temperature drops

below T eco at thermostat sensor 1, the relay is switched on and heats up to Threshold + hysteresis.

Mod. Offset

At modulated heat request the requested temperature can be increased by the value adjusted here.

14-day Reference

If operating mode‚ 14-day reference value‘ is selected see " Heating Circuit " on page 15, the reference flow temperature for each

of the 14 days can be set here. In Menu 4.4.1, the starting time of the program is shown. To restart the reference program, press

‚restart‘.

Pressing ‚restart‘ again will reset the 14-day reference program and restart it at Day 1.

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Sorel MHCC Seite 17

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