GESTRA NRA 1-3, Оригинальная инструкция по установке

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Operation, alarm and test
Setting group temperatures in mode 1 and 6
Function
To detect banking-up of condensate the temperature of the condensate in the steam trap is compared
with the condensate temperature in the plant. The temperature sensor TRG 5-.. (Pt 100) measures the
temperature of the plant.
It is possible to divide the plant in groups.Each group requires the measurement of the group tempera-
ture and at least one detection of condensate banking-up. The plant can be split up into a maximum of
eight groups.
To measure the group temperature connect a temperature sensor Pt 1000 instead of the measuring
electrode NRG 16-27, NRG 16-28. Connect the temperature sensor to the connecting terminals 1, 2 and
3. Fig 4 5 - = Connecting terminals of measuring electrodes
Examples of three groups:
Channel GrP ON / OFF Group Remark
T-Sys 1 Pt 100, plant temperature first group
C.01 OFF 1
C.02 OFF 1
C.03
ON
2 Pt 1000, plant temperature second group
C.04 OFF 2
C.05 ON 3 Pt 1000, plant temperature third group
C.06 - C.16 OFF 3
The prerequisites for operating mode 1 and 6 with measurement of group temperature are:

the use of the measuring electrodes NRG 16-27, NRG 16-28 (with integrated condensate tempera-
ture measurement at the steam trap).

the use of a separate temperature sensor for the measurement of the system/(plant) temperature.

the use of temperature sensors Pt 1000, the number of which depends on the planned groups
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