Configuration Wizard: Additional Zone; Weather-Dependent Curve; What Is A Weather-Dependent Curve - Daikin EWAA008D2V3P-H Installation Manual

Control
Leaving water Unit operation is decided based on the leaving
water temperature regardless the actual room
temperature and/or heating or cooling demand
of the room.
External room Unit operation is decided by the external
thermostat thermostat or equivalent (e.g. fan coil units).
Room thermostat Unit operation is decided based on the ambient
temperature of the dedicated Human Comfort
Interface (BRC1HHDA used as room
thermostat).
# Code
[2.9] [C‑07] ▪ 0: Leaving water
▪ 1: External room thermostat
▪ 2: Room thermostat
Setpoint mode
Define the setpoint mode:
▪ Fixed: the desired leaving water temperature does not depend on
the outdoor ambient temperature.
▪ In WD heating, fixed cooling mode, the desired leaving water
temperature:
▪ depends on the outdoor ambient temperature for heating
▪ does NOT depend on the outdoor ambient temperature for
cooling
▪ In Weather dependent mode, the desired leaving water
temperature depends on the outdoor ambient temperature.
# Code
[2.4] N/A Setpoint mode:
▪ Fixed
▪ WD heating, fixed cooling
▪ 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 can shift the water
temperature up or down by a maximum of 10°C.
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
[2.1] N/A ▪ 0: No
▪ 1: Yes
8.2.6

Configuration wizard: Additional zone

The most important settings for the additional leaving water zone
can be set here.
Emitter type
For more info about this functionality, see
zone" [ 4 30].
wizard: Main
# Code
[3.7] [2‑0D] ▪ 0: Underfloor heating
▪ 1: Fancoil unit
▪ 2: Radiator
EWAA004~008D + EWYA004~008D
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P688014-1D – 2022.10
In this control...
Description
Description
Description
"8.2.5 Configuration
Description
Control
The control type is displayed here, but cannot be adjusted. It is
determined by the control type of the main zone. For more info about
the functionality, see "8.2.5 Configuration wizard: Main
# Code
[3.9] N/A ▪ 0: Leaving water if the control type
of the main zone is Leaving water.
▪ 1: External room thermostat if the
control type of the main zone is
External room thermostat or Room
thermostat.
Setpoint mode
For more info about this functionality, see
zone" [ 4 30].
wizard: Main
# Code
[3.4] N/A ▪ 0: Fixed
▪ 1: WD heating, fixed cooling
▪ 2: Weather dependent
If you choose WD heating,
dependent, the next screen will be the detailed screen with weather-
dependent curves. Also see "8.3 Weather-dependent
Schedule
Indicates if the desired leaving water temperature is according to a
schedule. Also see "8.2.5 Configuration wizard: Main
# Code
[3.1] N/A ▪ 0: No
▪ 1: Yes
8.3

Weather-dependent curve

8.3.1

What is a weather-dependent curve?

Weather-dependent operation
The unit operates 'weather-dependent' if the desired leaving water
temperature is determined automatically by the outdoor temperature.
It therefore is connected to a temperature sensor on the North wall
of the building. If the outdoor temperature drops or rises, the unit
compensates instantly. Thus, the unit does not have to wait for
feedback by the thermostat to increase or decrease the leaving
water temperature. Because it reacts more quickly, it prevents high
rises and drops of the indoor temperature.
Advantage
Weather-dependent operation reduces energy consumption.
Weather-dependent curve
To be able to compensate for differences in temperature, the unit
relies on its weather-dependent curve. This curve defines how much
the leaving water temperature must be at different outdoor
temperatures. Because the slope of the curve depends on local
circumstances such as climate and the insulation of the house, the
curve can be adjusted by an installer or user.
Types of weather-dependent curve
There are 2 types of weather-dependent curves:
▪ 2-points curve
▪ Slope-offset curve
Which type of curve you use to make adjustments, depends on your
personal preference. See
curves" [ 4 32].
8 Configuration
zone" [ 4 30].
Description
"8.2.5 Configuration
Description
fixed cooling or Weather
curve" [ 4 31].
zone" [ 4 30].
Description
"8.3.4 Using weather-dependent
Installation manual
31