System Settings - Daikin Altherma 3 R F Installer's Reference Manual

9 | Configuration

9.4.4 System settings

Installer reference guide
144
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
#
N/A [5‑02]
N/A [5‑03]
climates" [
BUH only ambient temp.
Range: –15°C~7°C
Code
Space heating priority.
Defines whether backup heater will assist the
heat pump during domestic hot water
operation.
Consequence: Shorter tank heating operation
time and shorter interruption of the space
heating cycle.
This setting MUST always be 1.
[5‑01] Equilibrium temperature and [5‑03]
Space heating priority temperature are related
to backup heater. So, you must set [5‑03] equal
or a few degrees higher than [5‑01].
If the backup heater operation is limited
([4‑00]=0) and the outdoor temperature is
lower than setting [5‑03], the domestic hot
water will not be heated with the backup
heater.
Space heating priority temperature.
Defines the outdoor temperature which below
the backup heater will assist during domestic
hot water heating.
"6.1.2 Additional installation
4
51] for more information.
Description
Description
ERLA03DAV3 + EHFH03S18DJ3V
Daikin Altherma 3 R F
4P596806-1 – 2019.10