Daikin EWAA011DAV3P User Reference Manual page 13

EWAA011~016DA + EWYA009~016DA
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P620246-1A – 2021.02
2 Adjust the desired leaving water temperature.
b a
2
20
°C
Main zone
b a
3
12
°C
Additional zone
a Actual leaving water temperature
b Desired leaving water temperature
To change the weather-dependent curve for the space heating/cooling zones
1 Go to the applicable zone:
Zone
Main zone – Heating
Main zone – Cooling
Additional zone – Heating
Additional zone – Cooling
2 Change the weather-dependent curve.
There are 2 types of WD curves: slope-offset curve (default), and 2-points
curve. If needed, you can change the type in [2.E] Main zone > WD curve
type. The way to adjust the curve depends on the type.
Slope-offset curve
Slope. When slope is changed, the new
preferred temperature at X1 is
unequally higher than the preferred
temperature at X2.
a b
c
d
Y4
Y3
Y2
Y1
X1 X2
X1, X2 Outdoor ambient temperature
Y1~Y4 Desired leaving water temperature
a WD curve before changes
b WD curve after changes
c Slope
d Offset
+
–
+
–
[2.5] Main zone > Heating WD
curve
[2.6] Main zone > Cooling WD
curve
[3.5] Additional zone > Heating
WD curve
[3.6] Additional zone > Cooling
WD curve
Offset. When offset is changed, the new
preferred temperature at X1 is equally
higher as the preferred temperature at
X2.
a
Y4
Y3
Y2
Y1
4 Quick guide
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b
c
d
X1 X2
User reference guide
13