Daikin ERGA08DAV3 Installer's Reference Manual page 52

8 Configuration
# Code
[2.5] [1-00] Set weather-dependent heating:
T t
[1-01]
[1-02]
[1-02]
[1-03]
[1-03]
▪ T : Target leaving water temperature
t
(main zone)
▪ T : Outdoor temperature
a
▪ [1-00]:
temperature. –40°C~+5°C
▪ [1-01]:
temperature. 10°C~25°C
▪ [1-02]:
temperature
temperature equals or drops below the
low
[9‑01]°C~[9‑00]°C
Note: This value should be higher
than
temperatures
required.
▪ [1-03]:
temperature
temperature equals or rises above the
high
[9‑01]°C~min(45, [9‑00])°C
Note: This value should be lower than
[1‑02]
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
[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
Space heating
zone setpoint range
[9‑01]~[9‑00]
0: Underfloor Maximum 55°C
heating
1: Fancoil unit Maximum 55°C
2: Radiator Maximum 65°C
Installer reference guide
52
Description
[1-00] [1-01]
T a
Low outdoor ambient
High outdoor ambient
Desired leaving water
when the outdoor
ambient temperature.
[1‑03] as for low outdoor
warmer water is
Desired leaving water
when the outdoor
ambient temperature.
as for high outdoor
Description
Target delta T in
heating [1‑0B]
Variable (see [2.B])
Variable (see [2.B])
Fixed 10°C
NOTICE
The maximum setpoint in space heating depends on the
emitter type as can be seen in above table. If there are 2
water temperature zones, then the maximum setpoint is
the maximum of the 2 zones.
CAUTION
If there are 2 zones, it is important that the zone with the
lowest water temperature is configured as the main zone,
and the zone with the highest water temperature is
configured as the additional zone. Not configuring the
system in this way could cause damage to the heat
emitters.
CAUTION
If there are 2 zones and the emitter types are wrongly
configured, water of high temperature can be sent towards
a low temperature emitter (underfloor heating). To avoid
this:
▪ Install an aquastat/thermostatic valve to avoid too high
temperatures towards a low temperature emitter.
▪ Make sure you set the emitter types for the main zone
[2.7] and for the additional zone [3.7] correctly in
accordance with the connected emitter.
INFORMATION
Depending on the target delta T, the average emitter
temperature will vary. To counteract the effect on the
average emitter temperature due to a higher delta T target,
the leaving water setpoint (fixed or weather dependent)
can be adjusted.
Setpoint range
You can limit the range of the leaving water temperature for the main
leaving water temperature zone. The purpose of this setting is to
prevent a wrong (i.e. too hot or too cold) leaving water temperature.
Therefore, the available desired heating temperature range can be
configured.
NOTICE
In case of a floor heating application it is important to limit
the maximum leaving water temperature at heating
operation according to the specifications of the floor
heating installation.
INFORMATION
Only for EHVZ: If the indoor unit is connected to a high
temperature emitter system, and simultaneous demand
exists on both emitter zones, and if the high emitter system
leaving water setpoint is chosen bigger than 60°C in the
complete operation range, there can be an increased
power consumption.
ERGA04~08DAV3(A) + EHVZ04+08S18+23DA +
EHVZ04+08S18+23DJ
Daikin Altherma 3 R F
4P495249-1B – 2019.06