Hitachi PC-ARFG-E Installation & Operation Manual page 68

SERVICE & INSTALLATION MENU
Element Optional function
q8 Not used
q9 Not used
qA Not used
qb Operation mode with setback
Temperature differential for
qC
the setback function
Minimum stop time of
qd
setback
qE Setback mode
Operation state after the end
qF
of setback operation
r1 Dual setpoint
54 PMML0565 rev.1 - 04/2022
Individual
Settings
setting
00
- -
01
00
- -
01
00
- -
01
00 Disabled
01 Cooling
X
02 Heating
03 Cooling/Heating
00 2.0°C
01 3.0°C
X 02 4.0°C
03 5.0°C
04 1.0°C
00 10 minutes
01 20 minutes
02 30 minutes
03 40 minutes
04 50 minutes
05 60 minutes
X
06 70 minutes
07 80 minutes
08 90 minutes
09 100 minutes
10 110 minutes
11 120 minutes
00 Always
01 Input
X
02 Schedule
03 Manual
00 Stop
01 Run
X
Operation state before the beginning of
02
setback
00 Function disabled (factory setting)
X
01 Function enabled
Setting conditions Description
Use at 00 conditions
Use at 00 conditions
Use at 00 conditions
Operation modes in which
setback operation is activated to
keep a minimum comfort in the
room while it is not occupied.
Target temperatures for both
cooling and heating operation
are determined versus a
temperature to start setback
operation (rE, rF)
Target temperature calculation:
Target temperature in cooling
mode: rF - qC (°C)
Target temperature in heating
mode: rE + qC (°C)
To avoid the frequent activation
of setback operation, a
minimum off-time shall pass
from the end of setback
operation until the beginning of
the following setback operation.
Even if room temperature
reaches the setpoint to start
setback operation, setback
operation does not start until the
minimum off-time has expired.
When selecting "01: Input",
it is necessary to set up one
input contact (i1 or i2) with
the setback function "09". This
operation has to be done in the
input/output setting menu of the
remote controller.
When selecting "02: Schedule"
or "03: Manual", additional
settings are required.
Operation state to switch
to upon the end of setback
duration.
This function allows the setting
of independent setpoints for
cooling and heating in the
automatic cooling/heating mode.