Hitachi PC-ARF Technical Catalogue page 490

6 Building air conditioning controls
CSNET WEB (PSC-A160WEB1)
Description of parameters
To use this option, you have to set the parameters shown in the Auto Cool/Heat operation panel. After that, if unit is work-
ing in Auto Cool/Heat mode, you can see the status of this operation on the status zone of the panel.
The Auto Cool/Heat panel shown corresponds to the cooling circuit of the indoor unit selected in the table of indoor units,
as shown in the example.
You should adjust the following parameters:
Master unit: Field for selecting the method CSNET WEB will use to calculate the temperature difference.
(Marked): CSNET WEB will only use this unit to calculate the temperature difference and decide the change, not
- 
taking into account the other units connected to the same 2-tube cooling circuit.
-  (Not marked): CSNET WEB will use the average temperature difference of all the indoor units connected to the
same 2-tube cooling circuit.
C A U T I O N
When this method is used (marked), the following outdoor unit option cannot be used: "control of indoor unit fan speed" (during operation
with the thermostat deactivated in heat mode, the indoor fan stops for 6 minutes and operates for 2 minutes). If it is used, the decision of
when to change will not always be correct (if it is measured during the deactivation cycle of 6 minutes).
Select input data: field for selecting what inlet temperature CSNET WEB should use to calculate the temperature differ-
ence if an optional remote temperature sensor is connected in THM4 of the PCB of the indoor unit or if there is RCS remote
sensor.
When there are selected a combination of different sensor it will calculate the average between them.
When nothing is selected, it is forced to use the Tin value.
MINOAT: Minimum outdoor ambient temperature for cool operation.
Preset adjustment: +10°C.
-
- 1°C steps.
- 0°C... 40 °C margin.
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TCGB0106 rev.0 - 12/2014