Weather-Dependent Curve; What Is A Weather-Dependent Curve; 2-Points Curve - Daikin ERLA03DAV3 Installer's Reference Manual

9 | Configuration

9.3 Weather-dependent curve

9.3.1 What is a weather-dependent curve?

9.3.2 2-points curve

Installer reference guide
112
Weather-dependent operation
The unit operates 'weather dependent' if the desired leaving water or tank
temperature is determined automatically by the outdoor temperature. It therefore
is connected to a temperature sensor on the North wall of the building. If the
outdoor temperature drops or rises, the unit compensates instantly. Thus, the unit
does not have to wait for feedback by the thermostat to increase or decrease the
temperature of the leaving water or tank. Because it reacts more quickly, it
prevents high rises and drops of the indoor temperature and water temperature at
tap points.
Advantage
Weather-dependent operation reduces energy consumption.

Weather-dependent curve

To be able to compensate for differences in temperature, the unit relies on its
weather-dependent curve. This curve defines how much the temperature of the
tank or leaving water must be at different outdoor temperatures. Because the
slope of the curve depends on local circumstances such as climate and the
insulation of the house, the curve can be adjusted by an installer or user.
Availability
The weather-dependent curve is available for:
▪ Main zone - Heating
▪ Additional zone - Heating
▪ Tank
INFORMATION
To operate weather dependent, correctly configure the setpoint of the main zone,
additional zone or tank. See
Define the weather-dependent curve with these two setpoints:
▪ Setpoint (X1, Y2)
▪ Setpoint (X2, Y1)
Example
Set weather-dependent heating
T
t
Y2
Y1
X1
Confirm Adjust
X1, X2 Examples of outdoor ambient temperature
Y1, Y2 Examples of desired tank temperature or leaving water temperature
"9.3.3 Using weather-dependent
X2 T
a
Scroll
curves" [ 4 113].
ERLA03DAV3 + EHFZ03S18DJ3V
Daikin Altherma 3 R F
4P596821-1A – 2020.05