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17.9 H&L Local Temperature Protection
This function, available for all units in the same group and that adjust according to the average temperature (P26.02=Y), permits
monitoring the formation of Hot and Cold Spots in a room controlled by various units on the LAN network.
INFORMATION:
The function can be viewed only after enabling the LAN network and adjustment according to the average
temperature.
The parameters for setting and enabling this function can be modified only by the Priority unit.
The protection is enabled so that the air temperature in the room is not too high or too low, according to the following criteria:
•
Hot Spot protection:
•
Cold Spot protection:
When the function is activated as a result of one of the above limits being reached for a time greater than P26.15, it "frees" the
protected unit from having to adjust according to the average temperature. In this way, the unit can adjust according to its own
local air temperature, and the temperature fault detected in that individual unit can be managed independently.
After the local air temperature has been brought by the independent unit back within the Hot Spot and Cold Spot limit for a time
greater than P26.14, the unit is reconnected to the LAN and made to adjust according to the average temperature.
INFORMATION:
This function is available for units in standby and in ADL mode, which must be configured for
adjustment according to average temperature and humidity.
Pr otection ON and adjustment at
Temperature
average T. disabled
T.Room
The diagram below illustrates the function described above.
•
Setpoint: 23.0°C
•
Band: 2.0°C
Version 38
�������� ������ ���������������������� > �������������� ������ ���������������������� + ��26.12
�������� ������ ���������������������� < �������������� ������ ���������������������� − ��26.13
P26.15
Figure 17-9: graph showing the H&L Local Temperature Protection.
Protection OFF and adjustment at average
T. restored
P26.14
P26.12
T.Average
P26.13
Time
204
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