System Settings - Daikin EHFZ03S18DJ3V Installer's Reference Manual

10.4.4 System settings

ERLA03DAV3 + EHFZ03S18DJ3V
Daikin Altherma 3 R F
4P596821-1B – 2021.10
Boiler efficiency
Depending on the used boiler, this should be chosen as follows:
# Code
N/A [7‑05]
You can set the following values based on the outdoor temperature:
# Code
N/A [C-03]
N/A [C-04]
Permission signal X1–X2
a
[C-04]
b
[C-03]
T Outdoor temperature
A
[C-03] Bivalent ON temperature (fixed)
a Auxiliary boiler active
b Auxiliary boiler inactive
Backup heater only ambient temperature
The outdoor unit heat pump can operate until an ambient temperature of –7°C by
default. Depending on the installation area of the outdoor unit, you may want to
lower the ambient temperature setting to –15°C. In this case, the backup heater
will take over operation from the outdoor unit. See
site requirements of the outdoor unit in cold
Under certain conditions, the installation of EKBPHT03D may be required.
# Code
A.5.1.5 [8-0E]
Priorities
For systems with an integrated domestic hot water tank
Boiler efficiency
▪ 0: Very high
▪ 1: High
▪ 2: Medium
▪ 3: Low
▪ 4: Very low
Bivalent activation temperature: defines the
outdoor temperature below which the
permission signal for the auxiliary boiler is active
(X1 and X2 on EKRP1HBAA is closed) and space
heating by indoor unit is stopped.
–25°C~25°C
Bivalent hysteresis temperature: defines the
temperature difference between the ON
temperature and the OFF temperature.
2°C~10°C
T
A
climates" [
BUH only ambient temp.
Range: –15°C~7°C
10 Configuration
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Description
Description
"7.1.2 Additional installation
4
51] for more information.
Description
Installer reference guide
147