![background image](http://html1.mh-extra.com/html/daikin/ehvh08su18cb6w/ehvh08su18cb6w_installers-reference-manual_4122416054.webp)
8 Configuration
Installer reference guide
54
ERLQ004~008CA + 26CB6W
Daikin Altherma – Low temperature split
4P449978-1B – 2018.07
#
Code
Description
[A.2.2.4]
[C-05]
Contact type main
In external room thermostat control, the
contact type of the optional room
thermostat or heat pump convector for
the main leaving water temperature zone
must be set. See
▪ 1 (Thermo ON/OFF): The connected
external room thermostat or heat
pump convector sends the heating
demand to the indoor unit (X2M/1).
Select this value in case of a
connection
to
the
heat
pump
convector (FWXV).
▪ 2
(H/C
request)(default):
The
connected external room thermostat
sends a heating demand and is
connected
to
the
digital
input
(preserved for the main leaving water
temperature zone) on the indoor unit
(X2M/1). Select this value in case of
connection with the wired (EKRTWA)
or
wireless
(EKRTR1)
room
thermostat.
[A.2.2.5]
[C-06]
Contact type add.
In external room thermostat control with
2 leaving water temperature zones, the
type of the optional room thermostat for
the additional leaving water temperature
zone must be set. See
▪ 1 (Thermo ON/OFF): See Contact
type main. Connected on the indoor
unit (X2M/1a).
▪ 2 (H/C request)(default): See Contact
type main. Connected on the indoor
unit (X2M/1a).
[A.2.2.B]
[C-08]
External sensor
When an optional external ambient
sensor is connected, the type of the
sensor must be set. See
▪ 0 (No)(default): NOT installed. The
thermistor in the user interface and in
the outdoor unit are used for
measurement.
▪ 1 (Outdoor sensor): Installed. The
outdoor sensor will be used to
measure
the
outdoor
ambient
temperature.
Remark:
For some
functionality, the temperature sensor
in the outdoor unit is still used.
▪ 2 (Room sensor): Installed. The
temperature sensor in the user
interface is NOT used anymore.
Remark:
This value has only meaning
in room thermostat control.
Digital I/O PCB
Modification of these settings is only needed when the optional
digital I/O PCB is installed. The digital I/O PCB has multiple
functionality which need to be configured. See
#
Code
Description
[A.2.2.6.1]
[C-02]
Ext. backup heat src
Indicates if the space heating is also
performed by means of another heat
source than the system.
▪ 0 (No)(default): NOT installed.
▪ 1 (Bivalent): Installed. The auxiliary
boiler (gasboiler, oil burner) will
operate when the outdoor ambient
temperature is low. During the bivalent
operation, the heat pump is turned
OFF. Set this value in case an
auxililary
boiler
is
used.
See
"5 Application guidelines" on page 12
[A.2.2.6.2]
[D-07]
Solar kit
Only applicable for EHBH. Indicates if
the domestic hot water tank is also
heated by thermal solar panels.
▪ 0 (No)(default): NOT installed.
▪ 1 (Yes): Installed. The domestic hot
water tank can –besides by the heat
pump– also be heated by thermal
solar panels. Set this value if thermal
solar
panels
are
installed.
See
"5 Application guidelines" on page 12
[A.2.2.6.3]
[C-09]
Alarm output
Indicates the logic of the alarm output on
the digital I/O PCB during
malfunctioning.
▪ 0 (Normally open): The alarm output
will be powered when an alarm
occurs. By setting this value, a
distinction is made between the
detection of an alarm, and the
detection of a power failure.
▪ 1 (Normally closed): The alarm output
will NOT be powered when an alarm
occurs.
See also table below (Alarm output
logic).
[A.2.2.6.4]
[F-04]
Bottom plate heater
Only applicable for 16.
Indicates if an optional bottom plate
heater is installed on the outdoor unit.
The power of the bottom plate heater is
in this case supplied by the indoor unit.
▪ 0 (No)(default): NOT installed.
▪ 1 (Yes): Installed.
Remark:
If this
value is set, the output on the digital I/
O PCB cannot be used for space
heating output. See
.
Alarm output logic
[C-09]
Alarm
No alarm
No power
supply to unit
0 (default)
Closed output
Open output
Open output
1
Open output
Closed output
Demand PCB
The demand PCB is used to enable the power consumption control
by digital inputs. See