8 Configuration
Installer reference guide
39
EGSQH10S18AA9W
Daikin Altherma ground source heat pump
4P351748-1D – 2016.02
#
Code
Description
[A.2.2.A]
[D-02]
The indoor unit offers the possibility to
connect a field supplied domestic hot
water pump (On/OFF type). Depending
on the installation and configuration on
the user interface, we distinguish its
functionality.
DHW pump:
▪ 0 (No)(default): NOT installed.
▪ 1 (Secondary rtrn): Installed for instant
hot water when water is tapped. The
end-user sets the operation timing
(weekly
schedule
time)
of
the
domestic hot water pump when it
should run. Control of this pump is
possible through the indoor unit.
▪ 2
(Disinf.
shunt):
Installed
for
disinfection.
It
runs
when
the
disinfection function of the domestic
hot water tank is running. No further
settings are needed.
See also illustrations below.
Domestic hot water pump installed for…
Instant hot water
Disinfection
c
f
b
a
g
c
b
a
d f
e g
a
Indoor unit
b
Tank
c
Domestic hot water pump (field supply)
d
Heater element (field supply)
e
Non‑return valve (field supply)
f
Shower (field supply)
g
Cold water
Thermostats and external sensors
NOTICE
If an external room thermostat is used, the external room
thermostat will control the room frost protection. However,
the room frost protection is only possible if the leaving
water temperature control on the unit's user interface is
turned ON.
See
"5 Application guidelines" on page 8
.
#
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
"5 Application
guidelines" on page 8
.
▪ 1 (Thermo ON/OFF): The connected
external room thermostat or heat
pump convector sends the heating
demand by the same signal as it is
connected to only 1 digital input
(preserved for the main leaving water
temperature zone) on the indoor unit
(X2M/1). Select this value in case of a
connection
to
the
heat
pump
convector (FWXV).
#
Code
Description
[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
"5 Application
guidelines" on page 8
.
▪ 1 (Thermo ON/OFF): 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
"5 Application
guidelines" on page 8
.
▪ 0 (No)(default): NOT installed. The
thermistor in the user interface and in
the heat pump module are used for
measurement.
▪ 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
"5 Application
guidelines" on page 8
.
#
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 8
.
[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)(default): The alarm
output will be powered when an alarm
occurs. By setting this value, a
distinction
is
made
between
malfunctioning and detection of a
power failure of the unit.
▪ 1 (Normally closed): The alarm output
will NOT be powered when an alarm
occurs.
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
