Table of Contents
3 Operation
▪ Permanent
▪ hours (2, 4, 6, 8)
3.3.3
Room thermostat control - Using the
leaving water temperature home pages
For more information about the leaving water temperature, see the
user reference guide.
3.4
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.
3.4.1
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
There is a risk of space heating (or cooling) capacity
shortage/comfort problem when selecting [6‑0D]=0 ([A.4.1]
Domestic hot water Type=Reheat only).
In case of frequent domestic hot water operation, frequent
and long space heating interruption will happen.
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
Domestic hot water 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 –
Operation manual
8
3
2
4
t
14:00
21:00
4
3
5
t
14:00
21:00
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
3.4.4
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.
3.4.5
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 .
3.5
Schedules: Example
INFORMATION
The procedures to program other schedules are similar.
In this example:
▪ Monday = Tuesday = Wednesday = Thursday = Friday
3
4
5
t
14:00
21:00
User profile = Detailed
Mon
15:20
60°C
Tank
Storage comfort
Tue
00:00
EHFH03S18DJ3V
Daikin Altherma 3 R F
4P596804-1 – 2019.10
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