8 Configuration
Installer reference guide
45
EGSQH10S18AA9W
Daikin Altherma ground source heat pump
4P351748-1D – 2016.02
Leaving water temperature maximum modulation
Only applicable in room thermostat control and when modulation is
enabled. The maximum modulation (=variance) on the desired
leaving water temperature decided on the difference between the
actual and desired room temperature, e.g. 3°C modulation means
the desired leaving water temperature can be increased or lowered
by 3°C. Increasing the modulation results in better performance (less
On/OFF, faster heat up), but note that depending on the heat
emitter, there must always be a balance (refer to the design and
selection of the heat emitters) between the desired leaving water
temperature and the desired room temperature.
#
Code
Description
N/A
[8-06]
0°C~10°C (default: 3°C)
Temperature ranges (room temperature)
Only applicable in room thermostat control. In order to save energy
by preventing overheating the room, you can limit the range of the
room temperature.
NOTICE
When adjusting the room temperature ranges, all desired
room temperatures are also adjusted to guarantee they are
between the limits.
#
Code
Description
Room temp. range
[A.3.2.1.2]
[3-06]
Maximum temp (heating)
18°C~30°C (default: 30°C)
[A.3.2.1.1]
[3-07]
Minimum temp (heating)
12°C~18°C (default: 12°C)
Room temperature step
Only applicable in room thermostat control and when the
temperature is displayed in °C.
#
Code
Description
[A.3.2.4]
N/A
Room temp. step
▪ 1°C (default). The desired room
temperature on the user interface is
settable per 1°C.
▪ 0.5°C. The desired room temperature
on the user interface is settable per
0.5°C. The actual room temperature is
displayed with an accuracy of 0.1°C.
Room temperature hysteresis
Only applicable in case of room thermostat control. The hysteresis
band around the desired room temperature is settable. Daikin
recommends NOT to change the room temperature hysteresis as it
is set for an optimal use of the system.
[9-0C]
a
b
c
d
a
Room temperature
b
Actual room temperature
c
Desired room temperature
d
Time
#
Code
Description
N/A
[9-0C]
1°C~6°C (default: 1°C)
Room temperature offset
Only applicable in case of room thermostat control. You can
calibrate the (external) room temperature sensor. It is possible to
give an offset to the room thermistor value measured by the user
interface or by the external room sensor. The settings can be used
to compensate for situations where the user interface or external
room sensor cannot be installed on the ideal installation location
(see installation manual and/or installer reference guide).
#
Code
Description
Room temp. offset: Offset on the actual room temperature
measured on the user interface sensor.
[A.3.2.2]
[2-0A]
–5°C~5°C, step 0.5°C (default: 0°C)
Ext. room sensor offset: Only applicable if the external room sensor
option is installed and configured (see [C-08])
[A.3.2.3]
[2-09]
–5°C~5°C, step 0.5°C (default: 0°C)
Room frost protection
Room frost protection prevents the room from getting too cold. This
setting behaves differently depending on the set unit control method
([C‑07]). Perform actions according to the table below:
Unit control method ([C‑07])
Room frost protection
Room thermostat control
([C‑07]=2)
Allow for the room thermostat to
take care of room frost
protection:
▪ Set [2‑06] to "1"
▪ Set
the
room
antifrost
temperature ([2‑05]).
External room thermostat control
([C‑07]=1)
Allow for the external room
thermostat to take care of room
frost protection:
▪ Turn ON the leaving water
temperature home page.
▪ Set auto emergency ([A.5.1.2])
to "1".
Leaving water temperature
control ([C‑07]=0)
Room frost protection is NOT
guaranteed.
INFORMATION
If an U4 error occurs, room frost protection is NOT
guaranteed.
Refer to the sections below for detailed information on room frost
protection in relation to the applicable unit control method.
[C‑07]=2: room thermostat control
Under room thermostat control, room frost protection is guaranteed,
even if the room temperature home page is OFF on the user
interface. When room frost protection ([2‑06]) is enabled and the
room temperature drops below the room antifrost temperature
([2‑05]), the unit will supply leaving water to the heat emitters to heat
up the room again.
#
Code
Description
N/A
[2-06]
Room frost protection
▪ 0: disabled (default)
▪ 1: enabled
N/A
[2-05]
Room antifrost temperature
4°C~16°C (default: 12°C)
INFORMATION
If an U5 error occurs:
▪ when 1 user interface is connected, room frost
protection is NOT guaranteed,
▪ when 2 user interfaces are connected and the second
user interface used for room temperature control is
disconnected (due to miswiring, damage of the cable),
then room frost protection is NOT guaranteed.
