8 Configuration
Installer reference guide
65
ERGA04~08DAV3(A) + 08S18+23DA
Daikin Altherma – Low temperature split
4P495249-1 – 2017.12
Sensors
External sensor
#
Code
Description
[9.B.1]
[C–08]
External sensor : When an optional
external ambient sensor is connected,
the type of the sensor must be set.
▪ 0 None : NOT installed. The thermistor
in the user interface and in the outdoor
unit are used for measurement.
▪ 1 Outdoor: Connected to PCB of the
indoor unit measuring the
outdoor
temperature
.
Remark:
For some
functionality, the temperature sensor
in the outdoor unit is still used.
▪ 2 Room: Connected to PCB of the
indoor unit measuring the
indoor
temperature
. The temperature sensor
in the user interface is NOT used
anymore.
Remark:
This value has
only meaning in room thermostat
control.
Ext. amb. sensor offset
ONLY applicable in case an external outdoor ambient sensor is
connected and configured.
You can calibrate the external outdoor ambient temperature sensor.
It is possible to give an offset to the thermistor value. This setting
can be used to compensate for situations where the external outdoor
ambient sensor cannot be installed on the ideal installation location.
#
Code
Description
[9.B.2]
[2-0B]
Ext. amb. sensor offset: Offset on the
ambient temperature measured on the
external outdoor temperature sensor.
▪ –5°C~5°C, step 0.5°C
Averaging time
The average timer corrects the influence of ambient temperature
variations. The weather-dependent set point calculation is done on
the average outdoor temperature.
The outdoor temperature is averaged over the selected time period.
#
Code
Description
[9.B.3]
[1-0A]
Averaging time:
▪ 0: No averaging
▪ 1: 12 hours
▪ 2: 24 hours
▪ 3: 48 hours
▪ 4: 72 hours
Bivalent
Bivalent
Only applies to indoor unit installations with an auxiliary boiler
(alternating operation, connected in parallel). The purpose of
bivalent operation is to determine which heating source can/will
provide the space heating, either the indoor unit or an auxiliary
boiler.
#
Code
Description
[9.C.1]
[C-02]
Bivalent: Indicates if the space heating is
also performed by means of another heat
source than the system.
▪ 0 No: Not installed
▪ 1 Yes: Installed. The auxiliary boiler
(gas boiler, oil burner) will operate
when the outdoor ambient temperature
is low. During bivalent operation, the
heat pump is turned off. Set this value
in case an auxiliary boiler is used.
▪ If Bivalent is enabled: When the outdoor temperature drops below
the bivalent ON temperature (fixed or variable based on energy
prices), the space heating by the indoor unit stops automatically
and the permission signal for the auxiliary boiler is active.
▪ If Bivalent is disabled: Space heating is only done by the indoor
unit within the operation range. The permission signal for the
auxiliary boiler is always inactive.
INFORMATION
▪ The combination of setting [4‑03]=0/2 with bivalent
operation at low outdoor temperature can result in
domestic hot water shortage.
▪ The bivalent operation function has no impact on the
domestic water heating mode. The domestic hot water
is still and only heated by the indoor unit.
▪ The permission signal for the auxiliary boiler is located
on the EKRP1HB (digital I/O PCB). When it is
activated, the contact X1, X2 is closed and open when
it is deactivated. See illustration below for the
schematic location of this contact.
YC Y1 Y2 Y3 Y4
X1
X2
X3
X4
OFF ON
X2M
SS1
X1M
Boiler efficiency
Depending on the used boiler, this should be chosen as follows:
#
Code
Description
[9.C.2]
[7‑05]
▪ 0: Very high
▪ 1: High
▪ 2: Medium
▪ 3: Low
▪ 4:Very low
Possibility 1: Based on the outdoor temperature
Set all electricity prices ([7.5.1]~[7.5.3]) to "0" in the menu structure.
Also set the following values:
NOTICE
Do NOT use overview settings!
