To Change The Desired Room Temperature; To Change The Desired Leaving Water Temperature; Domestic Hot Water Control; Reheat Mode - Daikin Altherma 3 GEO EGSAH10DA9W Operation Manual

3 Operation
2 Select one of the following options:
▪ Heating: Only heating mode
▪ Cooling: Only cooling mode
▪ Automatic: The operation
automatically based on the outdoor temperature.
Restricted according to the operation mode
schedule.
To restrict automatic changeover according to a schedule
Conditions: You set the space operation mode to Automatic.
1 Go to [4.2]: Space heating/cooling > Operation
mode schedule.
2 Select a month.
3 For each month, select an option:
▪ Reversible: Not restricted
▪ Heating only: Restricted
▪ Cooling only: Restricted
4 Confirm the changes.
3.3.2

To change the desired room temperature

During room temperature control, you can use the room temperature
setpoint screen to read out and adjust the desired room temperature.
1 Go to [1]: Room.
You can read out the desired and actual room
temperature in the center of the setpoint screen.
2 Adjust the desired room temperature.
If scheduling is on after changing the desired room temperature
▪ The temperature will stay the same as long as there is no
scheduled action.
▪ The desired room temperature will return to its scheduled value
whenever a scheduled action occurs.
You can avoid scheduled behaviour by (temporarily) turning off
scheduling.
To turn off room temperature scheduling
1 Go to [1.1]: Room > Schedule.
2 Select No.
3.3.3 To change the desired leaving water
temperature
INFORMATION
The leaving water is the water that is sent to the heat
emitters. The desired leaving water temperature is set by
your installer in accordance with the heat emitter type.
Only adjust the leaving water temperature settings in case
of problems.
You can use the leaving water temperature setpoint screen to read
out and adjust the desired leaving water temperature.
1 Go to [2]: Main zone or [3]: Additional zone.
You can read out the desired and actual leaving
water temperature in the center of the setpoint
screen.
2 Adjust the desired leaving water temperature.
Operation manual
6
mode changes
3.4

Domestic hot water control

3.4.1

Reheat mode

In reheat mode the DHW tank continuously heats up to the
temperature shown on the home screen (example: 50°C).
T t
1
60°C
50°C
40°C
15°C
00:00 07:00
T DHW tank temperature
t
t Time
3.4.2

Scheduled mode

In scheduled mode the DHW tank produces hot water corresponding
to a schedule. The best time to allow the tank to produce hot water is
at night, because the space heating demand is lower.
Example:
T t
1
2
60°C
50°C
40°C
15°C
00:00 07:00
T DHW tank temperature
t
t Time
3.4.3

Scheduled + reheat mode

In scheduled + reheat mode, the domestic hot water control is the
same as in scheduled mode. However, when the DHW tank
temperature drops below a preset value (=reheat tank temperature –
hysteresis value; example: 35°C), the DHW tank heats up until it
reaches the reheat set point (example: 45°C). This ensures that a
minimum amount of hot water is available at all times.
Example:
T t
1
2
60°C
50°C
45°C
35°C
15°C
00:00 07:00
T DHW tank temperature
t
t Time
3.4.4

Using DHW powerful operation

About powerful operation
Powerful operation allows the domestic hot water to be heated by
the backup heater. Use this mode on days when there is more hot
water usage than usual.
3
2 4
t
14:00 21:00
4
3
5
t
14:00 21:00
3 4
5
t
14:00 21:00
EGSAH/X06+10DA9W(G)
Daikin Altherma 3 GEO
4P569812-1 – 2019.02