Hitachi CSNET MANAGER XT - Page 70

- MINOAT: Minimum outdoor ambient temperature for cool operation.
 Pre set adjustment: +10°C.
 1°C steps.
 0°C...40 °C margin.
 TSet Limits:
- USERMAX: Maximum Setting temperature. If the selected temperature is higher, CSNET will use USERMAX as the
value for the Setting temperature, changing this value as soon as the operation mode changes.
 Pre set adjustment: +25°C.
 1°C steps.
 17°C...30°C margin.
- USERMIN: Minimum Setting temperature. If the selected temperature is lower, CSNET will use USERMIN as the value
for the Setting temperature, changing this value as soon as the operation mode changes.
 Pre set adjustment: +20°C.
 1°C steps.
 17°C...30°C margin.
After adjust previously parameters, if unit is working in Auto Cool/Heat mode, it will be displayed on the status zone which option is
currently doing.
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When the Auto Cool/Heat is used, the difference of 4°C programmed in the heating mode of each indoor unit should be cancelled in
DOORIWKHP2WKHUZLVHWKHUHPD\EHDFRQÀLFWEHWZHHQWKHV\VWHPSURJUDPDQGWKHCSNET program. (See the Service Manual of the
indoor unit for details about cancelling this misadjustment using the optional function b1). However, if an optional remote sensor has
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,IDQLQGRRUXQLWLVGH¿QHGE\CSNET in Auto Cool/Heat mode, all the indoor units connected to the same outdoor SET-FREE FS
(or to the same CH Box in SET-FREE FX systems) will change to the Auto Cool/Heat mode. This means that, for example if one
of the indoor units was adjusted for heating at 17ºC and the outdoor SET-FREE FS or SET-FREE FX CH Box changes to cooling
mode, according to the calculation of CSNET, this indoor unit will begin to cool when it reaches 17°C. To prevent this kind of situation
from occurring, take care when programming the timer.
For all the indoor units connected to a single outdoor SET-FREE FS or SET-FREE FX CH Box, the starting time in the morning for
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³7LPHU´) should serve as the reference time and conditions for all the other units in the same system. At night,
the last indoor unit to change will be the reference point for all the other units of the system in question.
If a user selects a different mode with the remote control (PC-P1HE type) when the local mode is being used, it will later return
to the mode calculated by CSNET. Thus it is not recommended to use the mode selector of the remote controls during the Auto
Cool/Heat operation of CSNET in local mode. The temperature should only be regulated, if necessary, with the : (up) or ; (down)
buttons. CSNET will then select and adjust the necessary (and possible) mode by outdoor unit (also in the LCD screen of the
PC-P1HE remote control).
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