Intesis
Box
®
KNX - Haier A.C. (VRF line)
User's manual r1.0 EN
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This information is subject to change without notice
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Intesis Software SLU
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19 / 31
This parameter shows/hides the
Control_ Ambient Temperature
communication object which
lets you use an ambient temperature reference provided by a KNX device.
19:
o
If set to
“no”
the object will not be shown.
o
If set to
“yes”
the
Control_ Ambient Temperature
object will appear. Meant to be enabled
when you want the temperature provided by a KNX sensor to be the reference ambient
temperature for the air conditioner. Then, the following formula applies for the calculation of
real
Control_ Setpoint Temperature
sent ot the AC unit:
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 Haier system is:
24ºC
(“
Ambient Ref. Temp
”)
In this example, the final setpoint temperature that HA-AC-KNX-8/16/64 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 Haier unit.
This formula will be applied as soon as the
Control_ Setpoint Temperature
and
Control_ Ambient Temperature
objects are written at least once from the KNX
installation. After that, they are kept always consistent.
Note that this formula will always drive the AC indoor unit demand in the
right
direction, regardless of the operation mode (Heat, Cool or Auto).
“AC Setp. Temp” = “
Ambient ref.
Temp”
-
(“KNX Amb
.
Temp.”
-
“KNX Setp
Temp.”)
Temp”)
▪
AC Setp. Temp: AC indoor unit setpoint temperature
▪
Ambient Ref. Temp: AC indoor unit return temperature
▪
KNX Amb. Temp.: Ambient temperature provided from KNX
▪
KNX Setp. Temp: Setpoint temperature provided from KNX