Weather Dependent Operation; Detailed Screen With Weather-Dependent Curve - Daikin Altherma User Reference Manual

4 Operation
4.8

Weather dependent operation

In space heating/cooling control, the leaving water temperature
setpoint mode can be:
▪ Fixed
▪ WD heating, fixed cooling (in heating mode, the leaving water
temperature is determined automatically depending on the
outdoor temperature)
▪ Weather dependent (the leaving water temperature is determined
automatically depending on the outdoor temperature)
You can change the setpoint mode for the:
▪ Main zone [2.4]
▪ Additional zone (if available) [3.4]
To modify the parameters for the weather-dependent curve ([2.5]
and [2.6] for the main zone and [3.5] and [3.6] for the additional
zone, see below.
4.8.1 Detailed screen with weather-dependent
curve
When weather dependent operation is active the desired tank
temperature is determined automatically depending on the averaged
outdoor temperature. When the outdoor temperature is lower the
tank temperature will need to be higher as the water pipes will be
colder and vice versa.
The weather-dependent curves are defined by two setpoints:
▪ Setpoint (X1, Y2)
▪ Setpoint (X2, Y1)
Weather-dependent curve:
Y
Y2
Y1
X1 X2
Possible actions on this screen
Go through the temperatures.
Change the temperature.
Go to the next temperature.
Confirm changes and proceed.
Item
a Possible weather dependent zones:
▪ : Main zone or additional zone heating
▪ : Main zone or additional zone cooling
▪ : Domestic hot water
X, X1, X2 Outdoor ambient temperature
Y, Y1, Y2 Desired tank temperature or leaving water temperature.
The symbol shown here corresponds to the heat emitter
for that zone:
▪ : Underfloor heating
▪ : Fan coil unit
▪ : Radiator
▪ : Domestic hot water tank
User reference guide
14
a
X
Description
EABH/X16DA+9W + EAVH/X16S18+23DA6V+9W
Daikin Altherma – Low temperature split
4P556071-1 – 2018.10