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EHBH/X16
Daikin Altherma - Low Temperature Split
4P313776-1 – 2012.05
Installer reference guide
48
8 Configuration
Bottom plate heater
Applies only to installation with an outdoor unit ERHQ and the option
bottom plate heater kit is installed.
Q
[F-02] Bottom plate heater ON temperature: defines the outdoor
temperature below which the bottom plate heater will be
activated by indoor unit in order to prevent ice build-up in the
bottom plate of the outdoor unit at lower outdoor temperatures.
Q
[F-03] Bottom plate heater hysteresis: defines the temperature
difference between bottom plate heater ON temperature and the
bottom plate heater OFF temperature.
Bottom plate heater
8.3.4 System settings
Priorities
For systems with separate domestic hot water tank (only for
EHBH/X
)
T
A
Outdoor temperature
CAUTION
The bottom plate heater is controlled via EKRP1HB.
#
Code
Description
N/A
[F-02]
Bottom plate heater ON temperature:
3~10°C
Default: 3°C
N/A
[F-03]
Hysteresis: 2~5°C
Default: 5°C
INFORMATION
Dependent from setting [F-04] contact Y2 located on digital
I/O PCB (EKRP1HB) controls the option bottom plate
heater. See illustration below for the schematic location of
this contact. For complete upwiring, see wiring diagram.
YC Y1
Y2
Y3 Y4
X1
X2
X3
X4
OFF ON
X2M
SS1
X1M
#
Code
Description
N/A
[5-02]
Space heating priority.
Defines whether domestic hot water is
made by booster heater only when
outdoor temperature is below space
heating priority temperature.
Q
0: disabled
Q
1: enabled
[5-01] Equilibrium temperature and [5-
03] Space heating priority temperature
are related to backup heater. So, you
must set [5-01] and [5-03] to the same
value.
[5-03]
Space heating priority temperature.
Defines the outdoor temperature which
below the domestic hot water will be
heated by booster heater only.
N/A
[5-04]
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.
[A.6.1.2]
[C-00]
If a solar kit is installed, what has
priority to heat up the tank?
Q
0: Solar kit
Q
1: Heat pump
[A.6.1.1.1]
[C-01]
If there is a simultaneous demand for
space heating/cooling and domestic hot
water heating (by heat pump), which
operation mode has priority?
Q
0: The operation mode with the
highest request has priority.
Q
1: Always space heating/cooling
has priority.
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