Bedienungsanleitung Sorel LTDC (Seite 41 von 50) (Englisch)

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

Flow temperature sensor (X)

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

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

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

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

VFS (X)

The type used of direct sensor is set in this menu.

VFS - Position

This menu is used to set whether the direct sensor was mounted in supply or return flow.

To prevent damage to the Vortex Flow sensor it is highly recommended to place it in the return flow. If contrary to this recom-

mendation it is used in the supply line, the maximum temperature has to be considered. (0 ° C to 100 ° C continuous operation

and short term -25 ° C to 120 ° C)

Reference sensor

The sensor to be used for heat metering is set here.

Sensor Calibration

Deviations in the temperature values displayed, for example. due to cables which are too long or sensors which are not positioned optim-

ally can be compensated for manually here. The settings can be made for each individual sensor in steps of 0.5 °C.

Settings are only necessary in special cases at the time of initial commissioning by the specialist. Incorrect measurement val-

ues can lead to unpredictable errors.

Commissioning

Starting commissioning help guides you in the correct order through the basic settings necessary for commissioning, and provides brief

descriptions of each parameter in the display. Pressing the ‚esc‘ key takes you back to the previous value so you can look at the selected

setting again or adjust it if desired. Pressing ‚esc‘ more than once takes you back to the selection mode, thus cancelling the commissioning

help (See " Commissioning help " on page 28).

May only be started by a specialist during commissioning! Observe the explanations for the individual parameters in these

instructions, and check whether further settings are necessary for your application.

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Sorel LTDC Seite 41

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