Domestic Hot Water; Additional Program - Daikin EHSX04P30D Manuel D'utilisation

4 Function
▪ [Cooling] operating mode activated.
▪ via menu "Operating mode" or
▪ via room thermostat function (cooling switching contact closed)
▪ No heat request active in the RoCon system of the heating system
INFORMATION
If the mean outside temperature falls below 4 °C when
"Cooling" operating mode is active, the operating mode
automatically switches to "Heating".
Renewed automatic operating mode switching to "Cooling"
only takes place:
▪ if a room thermostat is connected to plug connection J16
(cooling) and
▪ the room thermostat's switching contact is closed and
▪ the mean outside temperature increases to over 10 °C
again.
Cooling curve
[→ Main menu → Configuration → Cooling→ Cooling curve]
The cooling curve determines the feed target temperature in cooling
mode depending on the respective outside temperature. (for
weather-compensated feed temperature control, see
Warmer outside temperatures result in a colder feed target temperat-
ure and vice versa. The cooling curve can be adapted to the condi-
tion of the building by four parameters (see
1 [Start T-Out Cooling]
2 [Max T-Out Cooling]
3 [T-Flow Cooling start]
4 [T-Flow Cooling max]
Cooling parameters
[→ Main menu → Configuration → Cooling→ Parameters]
This menu combines further parameters to determine feed target
temperatures in cooling mode.
During weather-compensated T-HS control, the user can increase or
decrease the feed target temperature by a maximum of 5 K with the
[Cooling setpoint adjustment] parameter. A temperature reduction is
limited by the [Feed temperature lower limit] parameter.
Fig. 4-3 Cooling curve parameter dependency
Item Designation
1 [Start T-Out Cooling] parameter
2 [Max T-Out Cooling] parameter
3 [T-Flow Cooling start] parameter
4 [T-Flow Cooling max] parameter
5 [Feed temperature lower limit] parameter
6 Room target temperature
7 Cooling mode possible
Operating Instructions
20
Tab. 4-6
Further explanations and possible settings for the parameters in this
menu can be found in
4.5.6
[→ Main menu → Configuration → DHW]
The domestic hot water preparation can be individually adapted to
the behaviour and requirements of the users in this menu. This min-
imises energy consumption and increases comfort.
Settings for optional circulation pump
Depending on the [Circulation pump control] parameter, an optional
circulation pump can be controlled synchronously with the selected
time program for domestic hot water generation or with the time pro-
gram for the circulation pump (see
Chap. 4.5.3).
times of the selected time program, the circulation pump can be op-
erated either continuously or cycled. This is defined with the [Circula-
tion pump control] parameter.
Fig. 4-3).
Anti-legionella protection
This function is used to prevent bacterial contamination in the hot
water tank by thermal disinfection. To do so, the hot water tank is
heated 1× daily or 1× weekly to the disinfection temperature
[Thermal disinfection temp.] depending on the [Thermal disinfection
day] parameter. Disinfection starts at the specified start time
[Thermal disinfection start time] and is active for one hour. An op-
tionally connected circulation pump is automatically switched on dur-
ing this time.
Detailed explanations and possible setting values of this function can
be found in
4.5.7
[→ Main menu → Configuration → Addition]
This menu combines programs which simplify initial commissioning
of the system.
Air purge function
[→ Main menu → Configuration → Addition → Ventilation]
By activating the ventilation function, the controller starts a fixed
defined sequence program with start/stop operation of the integrated
heating circulation pump and various positions of the integrated 3-
way switching valves. Existing air can escape during operation via
the automatic ventilation valve.
Item Designation
Temperat- Outside temperature
ure
A
T T-HS
V
------- Cooling curve
- - - - Possible parallel cooling curve shift
Chap. 7.6.4.

Domestic hot water

Chap. 7.6.5.

Additional program

INFORMATION
The activation of this function does not replace correct
venting of the HC.
The HC must be completely full before activating this func-
tion.
Chap. 4.3). During the release
Daikin RoCon+ HP
Daikin Controller RoCon+ HP
008.1444299_01 – 09/2018 – EN