4 Operation
User reference guide
11
EJHA EHY32AA
Daikin Altherma hybrid monobloc
4P531181-1 – 2018.06
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 start-up of the disinfection function at least
4 hours later than the last expected large hot water
tapping. This start-up 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 start-up of the
disinfection function to preheat the tank.
4.5.2
Instant DHW (no tank installed)
Not applicable for Switzerland
When there is a demand for hot water tapping, the boiler provides
DHW instantly.
Using the instant DHW home page
Not applicable for Switzerland
Depending on the user profile, the user interface gives you either a
basic or a detailed home page.
User profile = Basic
User profile = Detailed
44°C
01:03
Tue
DHW
Desired temperature
01:03
44°C
Tue
DHW
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
Then the DHW tank mode =…
Reheat mode
Scheduled mode
Sch reheat mode
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
60°C
00:00
07:00
50°C
15°C
40°C
14:00
21:00
1
2
3
4
Tt
T
t
DHW tank temperature
t
Time
INFORMATION
There is a risk of space heating capacity shortage/comfort
problem (in case of frequent domestic hot water operation,
frequent and long space heating interruption will happen)
when selecting [6‑0D]=0 ([A.4.1] Domestic hot water
Type=Reheat only).
In reheat mode, you can do the following:
You can…
Location
Read out
the desired reheat
temperature.
DHW tank
temperature
home page
Adjust
the reheat
temperature.
Condition: is displayed on the DHW tank
temperature home page.
Activate
the DHW tank
booster mode.
(Only for field supplied domestic hot water
pump for secondary return)
Program a domestic hot water pump schedule
to determine when to turn ON and OFF the pump.
When turned ON, the pump runs and makes sure
hot water is instantly available at the tap. To save
energy, only turn ON the pump during periods of
the day when instant hot water is necessary.
Menu structure
See also:
▪
"Using the DHW tank temperature home page" on page 12
▪
"Using the DHW tank booster mode" on page 13
▪
"4.7 Preset values and schedules" on page 16
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
60°C
00:00
07:00
50°C
15°C
40°C
14:00
21:00
1
2
3
4
5
Tt
T
t
DHW tank temperature
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
).
