Daikin D2CND035A4AB [6/12] Operation
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Daikin D2CND035A4AB [6/12] Operation

Daikin D2CND028A1AB [6/12] Operation
3 Operation
Operation manual
6
D2CND028+035A1/4AA + D2TND028+035A4AA
Wall-mounted condensing boiler
3P469438-5D – 2017.06
To change the domestic hot water setpoint
1 Turn the right dial while you are at the home screen. The
setpoint screen will appear as shown below and the setpoint
can be adjusted by turning the right dial. Note: The icon
means you are at the setpoint screen.
2 To apply changes done, wait for 3seconds or press the "Enter"
button. Pressing the "Cancel" button cancels the changes done.
NOTICE
To be able to change the setpoint of central heating or
domestic hot water, the corresponding operation mode
must be enabled. If it is not, the related dial has no
function.
3.3.5 Possible central heating operation modes
Mode Description
Boiler only The case that the system only
contains the boiler. No room
thermostat or outdoor sensor are
connected. The central heating water
temperature setpoint is displayed. The
setpoint can be adjusted with the left
dial.
The icon is shown on the screen
when the central heating operation
mode is enabled.
Combination with Daikin
Opentherm room
thermostat (DOTT )
The case that Daikin Opentherm room
thermostat is connected to the boiler.
Room temperature setpoint is
displayed. The room temperature
setpoint can be adjusted from the user
interface by means of the left dial or
from the Daikin room thermostat.
The icon is shown on the screen
instead of the icon when central
heating operation mode is enabled.
Mode Description
Boiler + outdoor sensor
(Weather compensation)
The case that outdoor sensor is
connected to the boiler. In this case,
the central heating water temperature
is regulated according to the outdoor
temperature. The virtual room
temperature setpoint is diplayed. The
virtual room temperature setpoint can
be adjusted by means of left dial.
Increasing or decreasing the setpoint
value reflects to the central heating
water temperature and the room
temperature, respectively.
The and icons are shown on the
screen when central heating operation
mode is enabled.
NOTICE
To enable weather compensation, the heating slope value
must be higher than "5" (see "User settings menu:
Parameters (short)"on page8).
INFORMATION
If an outdoor sensor is connected to the boiler together
with an Opentherm room thermostat (whether DOTT or
not), the rules of the case "Combination with Opentherm
room thermostat" are applicable. The outdoor sensor only
provides outdoor temperature data to the room thermostat
for water temperature calculation.
3.3.6 About the central heating ECO mode
The central heating ECO mode provides more economic central
heating. Main purpose of the ECO mode is to operate the boiler at
the condensing temperature range so to increase the efficiency.
ECO mode can be activated at any central heating operation mode
explained above.
ECO mode can be enabled from the user settings menu (see "User
settings menu: Parameters (short)"on page8).
INFORMATION
ECO mode is only for central heating, it has no effect to
domestic water heating.
When central heating ECO mode is enabled, icon is shown on the
screen while the central heating operation mode is enabled.
3.3.7 About the domestic hot water operation
This unit supplies domestic hot water by way of a plate heat
exchanger (instantaneous) or by way of a hot water storage tank
according to model of the boiler.
If the boiler is instantaneous type, domestic hot water operation is
activated when water is being tapped. Water flow rate must be at
least 2.5l/min.
If it is storage tank type, domestic hot water operation is activated
according to storage tank temperature value.
The icon blinks when domestic hot water operation is active.
INFORMATION
Domestic hot water operation mode must be enabled for
the boiler to be able to produce domestic hot water. (i.e.
summer mode or winter mode).

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