Setpoint restriction: temperature setpoints of variable refrigerant volume air
conditioning systems are typically limited to the range 16-32ºC (please refer
to the user manual of the actual unit). This function of the KLIC-DI device
allows configuring custom temperature ranges in ETS for the Heat and Cool
modes, provided that the custom values stay within the original range. In case
of receiving a temperature command from the KNX bus with a value
exceeding the configured range, the temperature value sent by KLIC-DI to the
machine will be the corresponding limit value.
Internal temperature and Reference temperature: variable refrigerant
volume A/C units incorporate several sensors for measuring the temperature
at different internal points. KLIC-DI monitors one of them, referred to as
internal temperature, and makes use of it to inform the KNX bus through the
“Internal Temperature (status)” communication object.
On the other hand, through the “Reference Temperature” object, KLIC-DI is
able to receive periodical temperature values from the KNX bus, as measured
by an external sensor. These values will be afterwards sent to the air-
conditioner machine, which may eventually use them for internal calculation.
This reference temperature object just works when KLIC-DI is master and
assigns a default value of 25ºC.
Error management: allows sending messages to the KNX bus informing
about errors. Error management handles both external errors from the A/C
unit itself and those that may arise in the KLIC-DI –A/C unit communication
process.
Apart from reporting external errors, a numerical code associated with them
is also provided and must be consulted in the specific user manual of the
installed air-conditioning system, according to ANNEX II: Correspondence
with A/C unit error codes.
Initial configuration: allows establishing the desired initial parameters for the
state of the A/C unit after downloading or restarting the device from ETS, or
after recovering from a bus failure. The following may be configured: ON/OFF
state, temperature, mode, fan and swing of the machine. It is also possible to
send the initial values to the KNX bus after the start-up.
