Room Thermostat Control - Using The Leaving Water Temperature Home; Domestic Hot Water Control; Reheat Mode; Scheduled Mode - Daikin Altherma 3 R F Operation Manual

4 Operation
▪ Permanent
▪ hours (2, 4, 6, 8)
4.3.3 Room thermostat control - Using the
leaving water temperature home pages
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.
Example: A home screen is available for both temperature
zones: the main zone and the additional zone. You only
have to adjust the leaving water temperature settings in
case of problems.
For more information about the leaving water temperature, see the
user reference guide.
4.4

Domestic hot water control

NOTICE
Disinfection mode. Even if you turn OFF domestic hot
water operation via the DHW tank temperature home page
(Tank), disinfection mode will remain active.
4.4.1

Reheat mode

In reheat mode ( ),the DHW tank continuously heats up to the
temperature shown on the DHW tank temperature home page
(example: 50°C).
T t
1
60°C
50°C
40°C
15°C
00:00 07:00
T Domestic hot water tank temperature
t
t Time
INFORMATION
When the DHW tank mode is reheat, the risk for capacity
shortage and comfort problem is significant. In case of
frequent reheat operation, space heating/cooling function
is regularly interrupted.
4.4.2

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 Domestic hot water tank temperature
t
t Time
Operation manual
8
3
2 4
t
14:00 21:00
4
3
5
14:00 21:00 t
4.4.3

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 Domestic hot water tank temperature
t
t Time
4.4.4 Using the DHW tank temperature home
page
Typical DHW tank temperature home pages
Depending on the user profile, the user interface gives you either a
basic or a detailed home page. The examples in the illustrations
below are in DHW tank mode = Scheduled.
User profile = Basic
Mon 15:20
Tank
60°C
Storage comfort
To read out and adjust the desired reheat temperature (in
scheduled and reheat mode)
1 Go to [7.4.3.3]: > User settings > Preset values > Tank
temperature > Reheat.
Result: You can read out the desired reheat temperature.
2 Press or to adjust.
To read out and overrule the active or next scheduled desired
temperature (in scheduled mode or scheduled + reheat mode)
1 Go to the DHW tank temperature home page (Tank).
60°C
Result: is displayed.
2 Press or to overrule.
Note: If the desired temperature is weather dependent, you cannot
change it on the home page.
4.4.5 Using the DHW tank booster mode
To activate the DHW tank booster mode (user profile = Basic)
1 Go to the DHW tank temperature home page (Tank).
2 Press for more than 5 seconds.
To activate the DHW tank booster mode (user profile = Detailed)
1 Go to the DHW tank temperature home page (Tank).
2 Press to select .
3 4
5
t
14:00 21:00
User profile = Detailed
15:20
Mon
60°C
Tank
Storage comfort
Tue 00:00
EHFZ03S18DJ3V
Daikin Altherma 3 R F
4P596819-1B – 2021.10