D2CND0 D2CND0 D2CND0
D2CND0 D2TND0 D2TND035A4AA
Wall-mounted condensing boiler
ESIE17 - 09 / 2017.11
Servicing manual
28
7 Operation
7.6.4 Central Heating (CH) ECO Mode
CH ECO mode provides more economic central heating. Main
purpose of the ECO mode is to operate the boiler at the con
-
densing 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 user settings menu.
ECO mode is only for central heating, it has no
effect to Domestic water heating.
INFORMATION
When CH ECO mode is enabled, icon is shown on the
screen when central heating operation mode is enabled.
•
If adjusted value from control panel ≥70 °C, central heat
-
ing target set temperature is 65 °C . Pump modulates to
obtain ΔT =30°C.
•
If adjusted value from control panel is between 60-70 °C,
central heating target set temperature is ‘adjusted val
-
ue’-5°C. Delta T is equal to ‘sadjusted value’- 40°C.
•
If adjusted value from control panel ≤ 60°C , central heat
-
ing target set temperature is ‘adjusted value’- 5°C. Pump
modulates to obtain ΔT =20°C.
Note:
When ECO mode is not activated, pump works for mod
-
ulating properly at ΔT=20°C.
Besides;
When ECO mode is activated, the pump will stop 10 minutes
after the burner goes out.
7.7 Domestic hot water operation
This appliance supplies domestic hot water by way of a plate
heat exchanger (instantaneous).
Hot water operation is activated when water is being tapped
more than 2.5 l/min.
The icon blinks when domestic hot water operation is ac
-
tive.
Domestic hot water operation mode must be en
-
abled for the boiler to be able to produce domes
-
tic hot water. (i.e. Summer mode or Winter mode).
INFORMATION
7.7.1 Domestic Hot Water (DHW) Comfort Mode
Domestic hot water Comfort mode includes a domestic hot
water pre-heat function and a domestic hot water post-heat
function. When Comfort mode is enabled, both pre-heat and
post-heat functions are enabled.
The pre-heat function is a self-learning algorithm according to
which the boiler will heat up the domestic hot water, before the
tapping demand. The algorithm is based on your personal use
pattern of the last 24 hours.
Note: Independent of personal use pattern, Comfort mode
preheating function could be adjusted to operate continuously
from the user settings.
For example;
When the domestic hot water(DHW) mode is activated, if the
water temperature sensor is below 15 °C from than set value,
appliance is enabled for pre-heating and It operates until do
-
mestic hot water is equal to the ‘set value’-5 and pre-heating
is enabled half hourly.
The post-heat function heats up the domestic hot water heat
exchanger after tapping, when the flow temperature of the
boiler is below the domestic hot water temperature setpoint.
For example;
When hot water valve is closed, if water temperature value is
below than domestic hot water(DHW) set value, boiler keep
working until the water temperature sensor value is upper 5
°C than DHW set value. In the meantime, boiler will operate
minimum capacity and it can work just 3 minutes at most.
3-way valve is at the domestic water.
Comfort mode can be enabled from user settings menu.
When DHW comfort mode is enabled, icon is shown on the
screen when domestic hot water operation mode is enabled.
The icon blinks when burner is on for Comfort mode.
7.8 Boiler Frost Protection
Frost protection safety system: This function protects the ap
-
pliance and heating installation from frost damages. This pro
-
tection activates the boiler pump when the water temperature
drops below 13°C and it activates the burner when the water
temperature drops below 8°C (factory setting). The appliance
keeps running until the temperature reaches 30°C. To enable
this function, the appliance must be connected to the power
supply and its main gas valve must be open. Any damage
caused by frost is not covered by the warranty. Frost Protec
-
tion is enabled in all modes, including Stand-by mode and Full
Off mode.
If the boiler is not connected to the power supply,
Frost Protection is not active. Consequently, the wa
-
ter may freeze and cause cracks. The manufacturer
is not responsible for any damage that may occur
this way.
WARNING
7.9 Error Handling
When an error occurs, the normal behavior of the user inter
-
face is interrupted, and the status of the Daikin Eye is affect
-
ed. However, be aware that not all errors have the same effect
on the user interface and the Daikin Eye.
When not using the boiler, we strongly recom
-
mend not to cut off the electric supply to the
boiler.
NOTICE
Summary of Contents for D2CND028A1AA
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