Daikin EWAA011-016DAV3P, Operation Manual, Page: 13 / 20

5 Operation
Operation manual
13
EWAA011~016DA + EWYA009~016DA
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P620244-1B – 2021.02
7 Select Sunday .
8 Select Paste .
Result:
Mon
Sat
Wed
Fri
Thu
Tue
Sun
User defined 1
C
To rename the schedule
1 Select the name of the current schedule.
Mon
Sat
Wed
Fri
Thu
Tue
Sun
User defined 1
2 Select Rename .
Delete
Rename
Select
3 (optional) To delete the current schedule name,
browse through the character list until
← is
displayed, then press to remove the previous
character. Repeat for each character of the schedule
name.
4 To name the current schedule, browse through the
character list and confirm the selected character.
The schedule name can contain up to 15 characters.
5 Confirm the new name.
INFORMATION
Not all schedules can be renamed.
5.8 Weather-dependent curve
5.8.1 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
"5.8.4 Using weather-dependent
curves" [
4
14].
Availability
The weather-dependent curve is available for:
▪ Main zone - Heating
▪ Main zone - Cooling
▪ Additional zone - Heating
▪ Additional zone - Cooling
INFORMATION
To operate weather dependent, correctly configure the
setpoint of the main zone and additional zone. See
"5.8.4 Using weather-dependent curves" [
4
14].
5.8.2 2-points curve
Define the weather-dependent curve with these two setpoints:
▪ Setpoint (X1, Y2)
▪ Setpoint (X2, Y1)
Example
Y1
Y2
X1 X2
a
Item Description
a Selected weather dependent zone:
▪ : Main zone or additional zone heating
▪ : Main zone or additional zone cooling
X1, X2 Examples of outdoor ambient temperature
Y1, Y2 Examples of desired leaving water temperature. The
icon corresponds to the heat emitter for that zone:
▪ : Underfloor heating
▪ : Fan coil unit
▪ : Radiator
Possible actions on this screen
Go through the temperatures.
Change the temperature.
Go to the next temperature.
Confirm changes and proceed.
5.8.3 Slope-offset curve
Slope and offset
Define the weather-dependent curve by its slope and offset:
▪ Change the slope to differently increase or decrease the
temperature of the leaving water for different ambient
temperatures. For example, if leaving water temperature is in