Sontex 878 - Check Code; Special Functions; Suppression of the Summer Counting; Annual Reset of the Consumption Value

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Instruction for Use | HCA 56x and 8x8
6.7 Check Code
A special additional feature of the electronic heat cost allocator 565 / 565 / 868 / 878 is the
check code function for the postcard mail-in method.
With especially developed algorithms a 5 digit check code is generated out of several device
data. With this check code the values stated on the postcards mailed-in by tenants can be cross
checked.
For this check, the following parameters are required:

Identification number.

The date.

The current consumption value.

The check code.
For the verification of the check code Sontex places all necessary tools (programs, formulas) at
the disposal of the authorized personnel.
6.8 Special Functions
6.8.1 Suppression of Summer Counting
The period during which summer counting is suppressed can be programmed by the software.
If the heat cost allocator is in the period of summer counting suppression, consumption measu-
ring is deactivated. If an automatic readout is carried out during this period the temperatures can
be read anyway since the temperature measuring is still active.
6.8.2 Annual Reset of the Consumption Value
The function of the annual reset of the cumulated consumption value can be programmed by
the software over the optical interface. One of the following options can be chosen for the
reset:

Set Day

Never
Please note that only the cumulated consumption value is reset. All other values are
not reset.
6.8.3 Unit Scale and Product Scale
For the heat cost allocators Sontex 565 / 566 / 868 / 878, distinction is made between the unit
scale and the product scale.
If heat cost allocators are used with the same scale on all radiators, this scale is called unit
scale. The display values are the same on the different radiators if the heat cost allocators are
exposed to the same temperature for the same period of time.
The evaluation of the display values is carried out arithmetically with the rating factors of the
calculation software to receive the final consumption values.
Advantage of the Unit Scale

Easy and quick installation of the heat cost allocator, no programming necessary.

Possible errors by doing the scaling on site are avoided due to allocation by experts
With the product scale, the radiator rating data are programmed in the heat cost allocator on
site. The overall rating factor K is calculated directly in the heat cost allocator and thus the
consumption value is displayed immediately.
Advantage of the Product Scale
 The actual consumption of each consuming point within one billing unit can be compared
easily and quickly on site.