2-Points Curve; Using Weather-Dependent Curves - Daikin Altherma EHFH-D3V Installation Manual

INFORMATION
To operate weather-dependent, correctly configure the
setpoint of the main zone, additional zone or tank. See
"7.3.3 Using weather-dependent
7.3.2

2-points curve

Define the weather-dependent curve with these 2 setpoints:
▪ Setpoint (X1, Y2)
▪ Setpoint (X2, Y1)
Example
Set weather-dependent heating
T
t
Y2
Y1
X1 X2 T
a
Confirm Adjust Scroll
X1, X2 Examples of outdoor ambient temperature
Y1, Y2 Examples of desired tank temperature or leaving water
temperature
7.3.3

Using weather-dependent curves

Configure weather-dependent curves as following:
To define the setpoint mode
To use the weather-dependent curve, you need to define the correct
setpoint mode:
Go to setpoint mode ...
Main zone – Heating/Cooling
[A.3.1.1.1] Main > LWT setpoint
mode
Additional zone – Heating/Cooling
[A.3.1.2.1] Additional > LWT
setpoint mode
Tank
[A.4.6] Domestic hot water
(DHW) > SP mode
To change the weather-dependent curve
Zone
Main zone – Heating
Main zone – Cooling
Additional zone – Heating
Additional zone – Cooling
Tank
INFORMATION
Maximum and minimum setpoints
You cannot configure the curve with temperatures that are
higher or lower than the set maximum and minimum
setpoints for that zone or for the tank. When the maximum
or minimum setpoint is reached, the curve flattens out.
To fine-tune the weather-dependent curve
The following table describes how to fine-tune the weather-
dependent curve of a zone or tank:
EHFH03S18D
Daikin Altherma 3 R F
4P596803-1D – 2022.08
curves" [ 4 23].
Set the setpoint mode to ...
Weather dep. OR WD/
scheduled
Weather dep. OR WD/
scheduled
Weather dep.
Go to ...
[7.7.1.1]Main > Set weather-
dependent heating
[7.7.1.2] Main > Set weather-
dependent cooling
[7.7.2.1]Additional > Set
weather-dependent heating
[7.7.2.2] Additional > Set
weather-dependent cooling
[A.4.7] Domestic hot water
(DHW) > Weather-dependent
curve
You feel ...
At regular outdoor At cold outdoor
temperatures ... temperatures ...
OK Cold
OK Hot
Cold OK
Cold Cold
Cold Hot
Hot OK
Hot Cold
Hot Hot
(a)
See "7.3.2 2-points curve" [ 4 23].
7 Configuration
Fine-tune with
setpoints:
(a) (a) (a) (a)
Y2 Y1 X1 X2
↑ — ↑ —
↓ — ↓ —
— ↑ — ↑
↑ ↑ ↑ ↑
↓ ↑ ↓ ↑
— ↓ — ↓
↑ ↓ ↑ ↓
↓ ↓ ↓ ↓
Installation manual
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