Daikin Altherma EPGA16DAV3 Installer's Reference Manual page 59

INFORMATION
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 an integrated domestic hot water tank
# Code
[9.6.1] [5‑02] Space heating priority: Defines whether
backup heater will assist the heat pump
during domestic hot water operation.
For optimal operation and lowest power
consumption, it is strongly
recommended to keep the default
setting (0).
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.
[9.6.2] [5‑03] Priority temperature: Used for
calculation of anti-recycling timer. If
[5‑02]=1, it defines the outdoor
temperature below which the backup
heater will assist during domestic hot
water heating.
[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].
[9.6.3] [5-04] 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
Timers for simultaneous space and domestic hot water
operation request
[8-02]: Anti-recycle timer
1
0
1
0
[8-01] [8-02]
EPGA11~16DAV3 + EAVZ16S18+23DA6V+9W
Daikin Altherma – Low temperature split
4P556075-1 – 2019.02
Description
t
1 Heat pump domestic water heating mode (1=active, 0=not
active)
2 Hot water request for heat pump (1=request, 0=no request)
t Time
[8-04]: Additional timer at [4-02]/[F-01]
t
[8-01]+
[8-04]
[8-02]
[8-01]
0
[5-03] [4-02]
T
T Ambient (outdoor) temperature
A
t Time
Anti-recycle timer
Maximum running time domestic hot water
# Code
[9.6.4] [8-02] Anti-recycle timer: Minimum time
between two cycles for domestic hot
water. The actual anti-recycling time also
depends on setting [8-04].
Range: 0~10 hours
Remark: The minimum time is 0.5 hours
even when the selected value is 0.
[9.6.5] N/A Minimum running timer:
Do NOT change.
[9.6.6] [8-01] Maximum running timer for domestic hot
water operation. Domestic hot water
heating stops even when the target
domestic hot water temperature is NOT
reached. The actual maximum running
time also depends on setting [8-04].
▪ When Control=Room thermostat: This
preset value is only taken into account
if there is a request for space heating
or cooling. If there is NO request for
space heating/cooling, the tank is
heated until the setpoint has been
reached.
▪ When Control≠Room thermostat: This
preset value is always taken into
account.
Range: 5~95 minutes
Remark: It is NOT allowed to set [8‑01]
to a value below 10 minutes.
[9.6.7] [8-04] Additional timer: Additional running time
for the maximum running time depending
on the outdoor temperature [4-02] or
[F-01].
Range: 0~95 minutes
Water pipe freeze prevention
Only relevant for installations with water piping outdoors. This
function tries to protect outdoor water piping from freezing.
# Code
[9.7] [4-04] Water pipe freeze prevention:
▪ 0: Intermittent (read only)
8 Configuration
t
[8-01]+
[8-04]
[8-02]
[8-01]
0
[F-01] 35°C
A
Description
Description
Installer reference guide
T
A
59