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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
building, the curve can be adjusted by an installer or user.
Types of weather-dependent curve
There are 2 types of weather-dependent curves:
▪ 2-points curve
▪ Slope-offset curve
Which type of curve you use to make adjustments, depends on your
personal
preference.
See
curves" [ 4 34].
Availability
The weather-dependent curve is available for:
▪ Main zone - Heating
▪ Main zone - Cooling
▪ Additional zone - Heating
▪ Additional zone - Cooling
▪ Tank (only available to installers)
INFORMATION
To operate weather-dependent, correctly configure the
setpoint of the main zone, additional zone or tank. See
"7.3.4 Using weather-dependent
7.3.2
2-points curve
Define the weather-dependent curve with these two setpoints:
▪ Setpoint (X1, Y2)
▪ Setpoint (X2, Y1)
Example
Y2
Y1
X1
X2
EGSAH/X06+10UD
Daikin Altherma 3 GEO
4P598591-1C – 2023.02
"7.3.4 Using
weather-dependent
curves" [ 4 34].
a
Item
a
Selected weather-dependent zone:
▪
: Main zone or additional zone heating
▪
: Main zone or additional zone cooling
▪
: Domestic hot water
X1, X2
Examples of outdoor ambient temperature
Y1, Y2
Examples of desired tank temperature or leaving water
temperature. The icon corresponds to the heat emitter
for that zone:
▪
: Underfloor heating
▪
: Fan coil unit
▪
: Radiator
▪
: Domestic hot water tank
Possible actions on this screen
Go through the temperatures.
Change the temperature.
Go to the next temperature.
Confirm changes and proceed.
7.3.3
Slope-offset curve
Slope and offset
Define the weather-dependent curve by its slope and offset:
▪ Change the slope to differently increase or decrease the
temperature
of
the
leaving
temperatures. For example, if leaving water temperature is in
general fine but at low ambient temperatures too cold, raise the
slope so that leaving water temperature is heated increasingly
more at decreasingly lower ambient temperatures.
▪ Change the offset to equally increase or decrease the
temperature
of
the
leaving
temperatures. For example, if leaving water temperature is always
a bit too cold at different ambient temperatures, shift the offset up
to equally increase the leaving water temperature for all ambient
temperatures.
Examples
Weather-dependent curve when slope is selected:
a
b
Y4
Y3
Y2
Y1
X1
X2
Weather-dependent curve when offset is selected:
7 Configuration
Description
water
for
different
ambient
water
for
different
ambient
c
e
d
Installation manual
33
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