Instructions

Intesis

KNX – Mitsubishi Electric A.C.

User's manual r17.0 EN

This information is subject to change without notice

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➢ DPT type for +/- Setp Temp object

This parameter lets choose between the datapoints 0-Up / 1-Down [DPT_1.008]

and 0-Decrease / 1-Increase [DPT_1.007] for the Control_ Setpoint Temp +/-

object.

4.5.2 Ambient temp. ref. is provided from KNX

This parameter shows/hides the Control_ Ambient Temperature communication object

which lets use an ambient temperature reference provided by a KNX device.

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 calculation of real Control_ Setpoint Temperature sent to 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 Mitsubishi system is: 24ºC (“AC Ret. Temp”)

In this example, the final setpoint temperature that ME-AC-KNX-1 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 Mitsubishi Electric 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).

4.6 Scene Configuration dialog

▪ Up / Increase

▪ Down / Decrease

…

19ºC

20ºC

28ºC

27ºC

(Upper limit)

(Lower limit)

“AC Setp. Temp” = “AC Ret. Temp” - (“KNX Amb. Temp.” - “KNX Setp. Temp”)

▪ AC Setp. Temp: AC indoor unit setpoint temperature

▪ AC Ret. Temp: AC indoor unit return temperature

▪ KNX Amb. Temp.: Ambient temperature provided from KNX

▪ KNX Setp. Temp: Setpoint temperature provided from KNX