Slope-Offset Curve - Daikin EWAA006D2V3P-H User Reference Manual

5.8.3 Slope-offset curve

EWAA004~008D + EWYA004~008D
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P688016-1A – 2022.09
Example
Y2
Y1
X1
Item
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
Go through the temperatures.
Change the temperature.
Go to the next temperature.
Confirm changes and proceed.
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 general fine but at low ambient temperatures too cold, raise
the slope so that leaving water temperature is heated increasingly more at
decreasingly lower ambient temperatures.
▪ Change the offset to equally increase or decrease the temperature of the leaving
water for different ambient temperatures. For example, if leaving water
temperature is always a bit too cold at different ambient temperatures, shift the
offset up to equally increase the leaving water temperature for all ambient
temperatures.
Examples
Weather-dependent curve when slope is selected:
X2
Description
Possible actions on this screen
5 Operation
|
a
User reference guide
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