Bedienungsanleitung Sorel MTDC-E (Seite 21 von 28) (Englisch)

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Purging time

For this time, the pump runs with its full speed (100%) in order to guarantee a secure start-up. Only after expiration of this purging time

will the pump have a controlled speed and will switch, depending on the set variant, to the max. or min. speed. Speed.

Sweep time

With the control time, the inertia of the speed control is determined in order to prevent strong temperature deviations as much as pos-

sible. The timespan is entered here, which is needed for a complete cycle from minimum speed to maximum speed.

Max. Speed

The maximum speed of the pump is determined here in %. During the setting, the pump runs in the respective speed and the flow can

be determined.

The specified percentages are variables, which may deviate more or less strongly depending on the system, pump and

pump level. 100% is the maximum possible power of the controller.

Min. Speed

The minimum speed of the pump is determined here. During the setting, the pump runs in the respective speed and the flow can be

determined.

The specified percentages are variables, which may deviate more or less strongly depending on the system, pump and

pump level. 100% is the maximum possible power of the controller.

Heat quantity

Constant flow

If “Constant flow” is activated as the type of heat quantity metering, the approximate heat from the manually entered values for anti-

freeze, its concentration and the flow from the system and the measured sensor values from the collector and storage are calculated.

Additional information about antifreeze, its concentration and the flow of the system is required. Additionally through the setting offset

∆T, a correction factor can be set for the heat quantity collection. Since the collector temperature and the storage temperature can be

used for the heat quantity metering, depending on the system, there may be deviations from the displayed collected temperature to the

actual previous temperature or the displayed storage temperature to the actual return temperature. Through the setting Offset ∆T, this

deviation can be corrected.

Example: displayed collector temperature 40°C, read previous temperature 39°C, displayed storage temperature 30°C, read return

temperature 31° means a setting of -20% (displayed ∆T 10K, actual ∆T 8K => -20% correction value)

The heat quantity data in the “Constant flow” mode only consists of calculated values for the functional inspection of the sys-

tem.

Flow temperature sensor (X)

In this menu, it is set which sensor is used to measure the return flow temperature.

Return flow sensor

In this menu, you can set which sensor is used to measure the return flow temperature.

Glycol type

In this menu, the antifreeze used is set. If none is used, please set glycol proportion to 0.

Glycol percentage

The percentage of antifreeze in the medium.

Flow rate supply flow (X)

Nominal system flow.

The flow of the system in liters per minute, which is used as calculation basis for heat metering.

Offset ∆T

Correction factor for the temperature difference for heat metering

Since the collector temperature and the storage temperature can be used for the heat quantity metering, depending on the system,

there may be deviations from the displayed collected temperature to the actual previous temperature or the displayed storage tem-

perature to the actual return temperature. This deviation can be corrected with the adjustment value Offset ΔT

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