Daikin Altherma EPGA011-016DV Installer's Reference Manual page 63

# Code
[9.4.4] [4-03] ▪ 2: The booster heater is allowed
outside the operation range of the heat
pump
operation.
Booster
allowed if:
▪ Ambient temperature is out of the
▪ Domestic hot water temperature is
If bivalent operation is enabled
([C‑02]=1) and permission signal for
auxiliary boiler is ON, the booster heater
will be restricted even when T
9.4.4 [4-03] ▪ 3: The booster heater is allowed when
the heat pump is NOT active in
domestic hot water operation.
Same as setting 1, but simultaneous
heat pump
operation
operation is not allowed.
9.4.4 [4-03] ▪ 4: Booster heater operation is NOT
allowed
function".
Only use this in case the capacity of
the heat pump can cover the heating
requirements
domestic hot water over the complete
heating season.
The booster heater will not be allowed
to
[5‑02]=1. The domestic hot water
temperature can be maximum the heat
pump OFF temperature.
Emergency
Emergency
When the heat pump fails to operate, the backup heater and/or
booster heater can serve as an emergency heater and either
automatically or non-automatically take over the heat load.
▪ When auto emergency is set to Automatic and a heat pump failure
occurs, the backup heater will automatically take over the heat
load, and the booster heater in the optional tank will automatically
take over the domestic hot water production.
▪ When auto emergency is set to Manual and a heat pump failure
occurs, the domestic hot water and space heating operation will
stop and need to be recovered manually via the user interface. To
recover operation manually, go to the Malfunctioning main menu
screen, where the user interface will then ask you to confirm
whether the backup heater and/or booster heater can take over
the heat load or not.
We recommend to set Emergency to Automatic if the house is
unattended for longer periods.
# Code
[9.5] N/A ▪ 0: Manual
▪ 1: Automatic
EPGA11~16DAV3 + EABH/X16DA6V+9W
Daikin Altherma – Low temperature split
4P556069-1 – 2018.10
Description
for domestic hot water
heater operation is
operating range: T <[5‑03]
a
T >35°C
a
The booster heater is only allowed
to operate when T <[5‑03] if space
a
heating priority is enabled
([5‑02]=1).
2°C lower than the heat pump OFF
temperature.
<[5‑03].
a
domestic hot water
and booster heater
except for "Disinfection
of the house
operate when T <[5‑03]
a
Description
INFORMATION
The auto emergency setting can be set in the menu
structure of the user interface only.
INFORMATION
only
If [4‑03]=1 or 3, then Emergency=Manual is not applicable
for the booster heater.
INFORMATION
or
If a heat pump failure occurs and Emergency is set to
Manual, the room frost protection function, the underfloor
heating screed dryout function, and the water pipe
antifreeze function will remain active even if the user does
NOT confirm emergency operation.
Balancing
Priorities
For systems with a separate domestic hot water tank
# Code
[9.6.1] [5-02]
and
[9.6.2] [5-03]
and
[9.6.3] [5-04]
Timers for simultaneous space and domestic hot water
operation request
[8-02]: Anti-recycle timer
8 Configuration
Description
Space heating priority: Defines whether
domestic hot water is made by booster
heater only when outdoor temperature
is below space heating priority
temperature.
▪ 0: Off (default)
▪ 1: On
Please do NOT change the default
value.
[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].
Priority temperature: Defines the
outdoor temperature which below the
domestic hot water will be heated by
booster heater only.
Please do NOT change the default
value.
Range: –15°C~35°C
Offset BSH setpoint: Set point
correction for domestic hot water
temperature: set point correction for the
desired domestic hot water
temperature, to be applied at low
outdoor temperature when space
heating priority is enabled. The
corrected (higher) set point will make
sure that the total heat capacity of the
water in the tank remains
approximately unchanged, by
compensating for the colder bottom
water layer of the tank (because the
heat exchanger coil is not operational)
with a warmer top layer.
Range: 0°C~20°C
Installer reference guide
63