Domestic Hot Water Control; About Domestic Hot Water Control; Reheat Mode - Daikin EGSQH10S18AA9W User Reference Manual

4 Operation
To adjust/overrule the leaving water temperature (main)(NOT
linked to room thermostat control)
INFORMATION
Adjusting the leaving water temperature is permanent
unless the leaving water temperature is according to a
schedule. In that case the overruling is valid until the next
scheduled action.
1 Go to [7.4.2]: > User settings > Preset values > LWT main.
2 Press or to adjust/overrule. Example:
To adjust the leaving water temperature (additional)
1 Go to the additional leaving water temperature home page
(LWT add).
2 Press or to adjust. Example:
4.5 Domestic hot water control
4.5.1 About domestic hot water control
Depending on the DHW tank mode (installer setting), you use a
different domestic hot water control:
▪ Reheat mode
▪ Scheduled mode
▪ Scheduled + reheat mode
CAUTION
The backup heater permission schedule is used to restrict
or allow backup heater operation based on a weekly
program. Advice: In order to avoid unsuccessful
disinfection function, at least allow the backup heater (by
the weekly program) for minimum 4 hours starting from the
scheduled start­up of disinfection. If the backup heater is
restricted during disinfection, this function will NOT be
successful and the applicable warning AH will be
generated.
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.
To determine which DHW tank mode you are using (method 1)
Check the installer settings table filled in by the installer.
User reference guide
10
35°C 37°C
45°C 47°C
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
4.5.2 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
In reheat mode, you can do the following:
You can...
Read out the desired reheat temperature.
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.
See also:
▪ "4.5.5 Using the DHW tank temperature home page" on page 11
▪ "4.5.6 Using the DHW tank booster mode" on page 12
▪ "4.7 Preset values and schedules" on page 15
Then the DHW tank mode =...
3
2 4
14:00 21:00 t
Location
DHW tank
temperature
home page
Menu structure
EGSQH10S18AA9W
Daikin Altherma ground source heat pump
4P351749­1 – 2013.06