7 Configuration
Installation manual
16
EKHWET90~120BAV3
R32 Split series – Domestic hot water tank
4P680074-1 – 2021.11
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 target temperature of the tank 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.
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
"7.3.4 Using weather-dependent
Availability
The weather-dependent curve is available for:
▪ Tank (only available to installers)
INFORMATION
To operate weather dependent, correctly configure the
setpoint of the tank. See
"7.3.4 Using weather-dependent
16].
7.3.2
2-points curve
Define the weather-dependent curve with these two setpoints:
▪ Setpoint (X1, Y2)
▪ Setpoint (X2, Y1)
Example
Y1
Y2
X1
X2
Item
Description
X1, X2
Examples of outdoor ambient temperature
Y1, Y2
Examples of desired tank temperature. The icon
corresponds to the heat emitter for that zone:
▪
: 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 target
temperature of the tank for different ambient temperatures. For
example, if tank water temperature is in general fine but at low
ambient temperatures too cold, raise the slope so that the tank
temperature is heated increasingly more at decreasingly lower
ambient temperatures.
▪ Change the
offset
to equally increase or decrease the target
temperature of the tank for different ambient temperatures. For
example, if the tank temperature is always a bit too cold at
different ambient temperatures, shift the offset up to equally
increase the tank target temperature for all ambient temperatures.
Examples
Weather-dependent curve when slope is selected:
X1
X2
c
d
Y1
Y2
Y3
Y4
a
b
Weather-dependent curve when offset is selected:
Y1
Y2
Y3
Y4
X1
X2
a
b
c
d
Item
Description
a
WD curve before changes.
b
WD curve after changes (as example):
▪ When slope is changed, the new preferred
temperature at X1 is unequally higher than the
preferred temperature at X2.
▪ When offset is changed, the new preferred
temperature at X1 is equally higher as the preferred
temperature at X2.
c
Slope
d
Offset
X1, X2
Examples of outdoor ambient temperature
Y1, Y2,
Y3, Y4
Examples of desired tank temperature. The icon
corresponds to the heat emitter for that zone:
▪
: Domestic hot water tank
Possible actions on this screen
Select slope or offset.
Increase or decrease the slope/offset.
When slope is selected: set slope and go to offset.
When offset is selected: set offset.
Confirm changes and return to the submenu.
7.3.4
Using weather-dependent curves
Configure weather-dependent curves as following:
Summary of Contents for EKHWET90BAV3
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