Daikin Altherma 3 H HT EPRA14DAW1, Installer'S Reference Manual

Page: 167 / 260

9 | Configuration
Installer reference guide
167
EPRA14~W1 + ETVH/9W(G)
Daikin Altherma 3 H HT F
4P587502-1A – 2020.01
00.00 22.00 24.00 01.00 23.00 t
T
DHW
T
H
T
U
[2-02]
[2-03]
[2-04]
T
DHW
Domestic hot water temperature
T
U
User setpoint temperature
T
H
High setpoint temperature [2-03]
t Time
WARNING
Be aware that the domestic hot water temperature at the hot water tap will be equal
to the value selected in field setting [2-03] after a disinfection operation.
When the high domestic hot water temperature can be a potential risk for human
injuries, a mixing valve (field supply) shall be installed at the hot water outlet
connection of the domestic hot water tank. This mixing valve shall secure that the
hot water temperature at the hot water tap never rise above a set maximum value.
This maximum allowable hot water temperature shall be selected according to the
applicable legislation.
CAUTION
Be sure that the disinfection function start time [5.7.3] with defined duration [5.7.5]
is NOT interrupted by possible domestic hot water demand.
NOTICE
Disinfection mode . Even if you turn OFF tank heating operation ([C.3]:
Operation
>
Tank ), disinfection mode will remain active. However, if you turn it OFF while
disinfection is running, an AH error occurs.
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 Reheat only or Schedule + reheat mode 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 Schedule only mode is selected, it is recommended to program an
Eco action 3 hours before the scheduled start-up of the disinfection function to
preheat the tank.
INFORMATION
Disinfection function is restarted in case the domestic hot water temperature drops
5°C below the disinfection target temperature within the duration time.
Maximum DHW temperature setpoint
The maximum temperature that users can select for the domestic hot water. You
can use this setting to limit the temperatures at the hot water taps.