INFORMATION
In case of error code AH and no interruption of the
disinfection function occurred due to domestic hot water
tapping, following actions are recommended:
▪ When the Domestic hot water > Type > Reheat or
Reheat + sched. is selected, it is recommended to
program the startup of the disinfection function at least
4 hours later than the last expected large hot water
tapping. This startup can be set by installer settings
(disinfection function).
▪ When the Domestic hot water > Type > Scheduled only
is selected, it is recommended to program a Storage
eco 3 hours before the scheduled startup of the
disinfection function to preheat the tank.
4.5.2
Instant DHW (no tank installed)
When there is a demand for hot water tapping, the boiler provides
DHW instantly. The DHW temperature is visible on the boiler's main
display.
Using the instant DHW home page
Depending on the user profile, the user interface gives you either a
basic or a detailed home page.
User profile = Basic
Tue
01:03
DHW
44°C
Desired temperature
To adjust the instant DHW temperature
1 Go to the instant DHW home page.
2 Press
or
to adjust the instant DHW temperature (DHW).
The instant DHW set point temperature may NOT be below 40°C.
4.5.3
Tank
The following modes are only applicable if a tank is installed and are
set by the installer.
To determine which DHW tank mode you are using (method 1)
Check the installer settings table filled in by the installer.
To determine which DHW tank mode you are using (method 2)
Prerequisite: User profile = Detailed.
1 Go to the DHW tank temperature home page (Tank).
2 Check which icons are displayed:
If... is displayed
Reheat mode
Scheduled mode
Scheduled + reheat mode
EHYHBH05AA + EHYHBH/X05+08AA + EHYKOMB33AA
Daikin Altherma hybrid heat pump
4P3556321 – 2013.05
User profile = Detailed
Tue
01:03
44°C
DHW
Desired temperature
Then the DHW tank mode =...
Reheat mode
In reheat mode ( ), the DHW tank continuously heats up to the
desired temperature (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
INFORMATION
When the DHW tank booster mode is active, the risk of
space heating/cooling and capacity shortage comfort
problems is significant. In case of frequent domestic hot
water operation, frequent and long space heating/cooling
interruptions will happen.
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
▪ Electricity tariffs are 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
▪ Initially, the DHW tank temperature is the same as the
temperature of the domestic water entering the DHW tank
(example: 15°C).
▪ At 00:00 the DHW tank is programmed to heat up the water to a
preset value (example: Storage comfort = 60°C).
▪ During the morning, you consume hot water and the DHW tank
temperature decreases. As long as the DHW tank temperature
stays above 40°C, hot water is available.
▪ At 14:00 the DHW tank is programmed to heat up the water to a
preset value (example: Storage eco = 50°C). Hot water is
available again.
▪ During the afternoon and evening, you consume hot water again
and the DHW tank temperature decreases again.
▪ At 00:00 the next day, the cycle repeats.
4 Operation
3
2
4
t
14:00
21:00
4
3
5
t
14:00
21:00
User reference guide
11