IntesisBox DK-RC-KNX-1i User Manual page 36

®
IntesisBox KNX - Daikin A.C. (SKY & VRV line)
ambient temperature from the Master device (remote controller, or DK-RC-
KNX-1i device) when this difference is small.
3) It is only used the ambient temperature from the Master device (remote
controller, or DK-RC-KNX-1i device). This option is not available on all the
indoor unit models.
Note that when this parameter is enabled in the DK-RC-KNX-1i, it may require the AC indoor
unit to be programmed to work in a specific way regarding the ambient temperature sensor,
in one of the three options explained above.
If set to "no" the object will not be shown.
o
If set to "yes" the Control_ Ambient Temperature object will appear.
o
 When the DK-RC-KNX-1i is Master in P1/P2 bus: The ambient temperature is
provided from KNX. The AC indoor unit will work with this temperature as its
reference temperature (it will NOT use its own return temperature). This
requires programming the AC indoor unit to work as explained in options 2) or
3) above.
 When the DK-RC-KNX-1i is Slave in P1/P2 bus: The indoor unit works with its
own return temperature. This requires programming the AC indoor unit to work
as explained in option 1) above.
As in this case the AC return temperature could be different as of the KNX
ambient temperature, the DK-RC-KNX-1i applies a formula to compensate this
difference. So, the compensated setpoint temperature sent to the AC indoor
unit is the result of applying the next formula:
"AC Setp. Temp" = "AC Ret. Temp" - ("KNX Amb. Temp." - "KNX Setp. Temp")
This formula ensures that DK-RC-KNX-1i will send always a suitable setpoint to
the AC indoor unit to reach the demanded setpoint of KNX and having always
into account the ambient temperature read at KNX and the return temperature
measured by the own AC indoor unit. Note these two ambient temperatures
may be different because one is measured at 1,5 meters above the ground (the
one measured by the KNX sensor), and the other one is measured in the inlet
pipe located in the ceiling (the one measured by Daikin).
As an example, consider the following situation:
User wants: 19ºC ("KNX Setp. Temp.")
User sensor (a KNX sensor) reads: 21ºC ("KNX Amb Temp.")
Ambient temp. read by Daikin system is: 24ºC ("AC Ret. Temp")
In this example, the final setpoint temperature that DK-RC-KNX-1i will send out
to the indoor unit (shown in "Setp. Temp.") will become 24ºC – (21ºC - 19ºC)
= 22ºC. This is the setpoint that will actually be requested to Daikin unit.
© Intesis Software S.L. - All rights reserved
This information is subject to change without notice
®
IntesisBox is a registered trademark of Intesis Software SL
AC Setp. Temp: AC indoor unit setpoint temperature

AC Ret. Temp: AC indoor unit return temperature
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KNX Amb. Temp.: Ambient temperature provided from KNX

KNX Setp. Temp: Setpoint temperature provided from KNX

User's manual r1.0 eng
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