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8 Configuration

Installer reference guide

ERGA04~08DAV3(A) + 08S18+23DA
Daikin Altherma – Low temperature split
4P495249-1 – 2017.12

user interface used as room thermostat or the external room sensor
CANNOT be installed on the ideal installation location (see

"5.6 Setting up an external temperature sensor" on page 15

Code

Description

[1.6]

[2-0A]

Room sensor offset (user interface used
as room thermostat): Offset on the actual
room temperature measured on the user
interface used as room thermostat.

▪ –5°C~5°C, step 0.5°C

[1.7]

[2-09]

Room sensor offset (external room
sensor option): ONLY applicable if the
external room sensor option is installed
and configured.

▪ –5°C~5°C, step 0.5°C

8.4.3

Main zone

Setpoint screen

You can set the leaving water temperature for the main zone using
the setpoint screen. For more information about how to do this, see

"8.3.5 Setpoint screen" on page 45

Schedule

Indicates if the desired leaving water temperature is according to a
schedule. Influence of the LWT setpoint mode [2.4] is as follows:

▪ In Fixed LWT setpoint mode, the scheduled actions consist of

desired leaving water temperatures, either preset or custom.

▪ In Weather dependent LWT setpoint mode, the scheduled actions

consist of desired shift actions, either preset or custom.

Code

Description

[2.1]

N/A

Schedule

▪ 0: No

▪ 1: Yes

Heating schedule

You can set the main zone heating temperature schedule using the
schedule screen. For more information about this screen, see

"8.3.8 Schedule screen: Example" on page 46

Setpoint mode

In Fixed mode, the desired leaving water temperature does NOT
depend on the outdoor ambient temperature.

In Weather dependent mode, the desired leaving water temperature
depends on the outdoor ambient temperature.

Code

Description

[2.4]

N/A

Setpoint mode

▪ 0: Fixed

▪ 2: Weather dependent

When weather dependent operation is active, low outdoor
temperatures will result in warmer water and vice versa. During
weather dependent operation, the user has the possibility to shift the
water temperature up or down by a maximum of 10°C.

Heating WD curve

Set weather-dependent heating for the main zone (if [2.4] = 1 or 2):

Code

Description

[2.5]

[1-00]

[1-01]

[1-02]

[1-03]

Set weather-dependent heating:

[1-03]

[1-02]

[1-00]

[1-01]

▪ T

: Target leaving water temperature

(main zone)

▪ T

: Outdoor temperature

▪ [1-00]:

Low

outdoor

ambient

temperature. –40°C~+5°C

▪ [1-01]:

High

outdoor

ambient

temperature. 10°C~25°C

▪ [1-02]:

Desired

leaving

water

temperature

when

the

outdoor

temperature equals or drops below the
low

ambient

temperature.

[9‑01]°C~[9‑00]°C

Note:

This value should be higher

than [1‑03] as for low outdoor
temperatures

warmer

water

required.

▪ [1-03]:

Desired

leaving

water

temperature

when

the

outdoor

temperature equals or rises above the
high

ambient

temperature.

[9‑01]°C~min(45, [9‑00])°C

Note:

This value should be lower than

[1‑02]

for

high

outdoor

temperatures less warm water is
required.

Emitter type

Depending on the system water volume and the heater emitter type
of the main zone, the heat up of the main zone can take longer. This
setting can compensate for a slow or a quick heating system during
the heat up cycle. The target delta T for the main zone will depend
on this setting. Target delta T control is only possible in case only 1
zone is active. Pump control will be different when both zones are
active.

In room thermostat control, this setting will influence the maximum
modulation of the desired leaving water temperature.

Therefore it is important to set this correctly and in accordance with
your system layout.

Code

Description

[2.7]

[2‑0C]

Emitter type

▪ 0: Underfloor heating

▪ 1: Fancoil unit

▪ 2: Radiator

The setting of the emitter type has an influence on the space heating
setpoint range and the target delta T in heating as follows:

Emitter type Main