SIMPLY INIMITABLE.
If the telegram received indicates that the window is
opened thermostat change its mode or setpoint after
1 minute from the reception of the telegram.
When it receive a telegram corresponding to state
“window closed” it restores the previous mode, always
with a delay of 1 minute . The value of SETPOINT
ADJUSTMENT (if enabled) is always restored.
SETPOINT ADJUSTMENT object
The object SETPOINT ADJUSTMENT allows you to
temporarily change the setpoint value used by the
thermostat applying an o set to the current value.
If the thermostat is operating in “HVAC MODE” the
o set value is applied from the time of receipt of a
valid telegram on object SETPOINT ADJUSTMENT until
this value does not change, even in case of change
of the active mode (Comfort and Standby only); this
does not happen with regard to Economy mode and
Building Protection: in this modes the value of object
SETPOINT ADJUSTMENT is forced to 0.
Similarly, if the thermostat is operating in SETPOINT
MODE the o set value is applied also when the
setpoint value received on this object changes.
ADDITIONAL TEMPERATURE object
It is possible to enable the reading of a second exter-
nal probe which sends the measurement data to the
thermostat via the communication object ADDITIO-
NAL TEMPERATURE of size 2 bytes.
KNX PARAMETER SETTINGS
Ratio between internal
and additional sensor
90 % internal–10 %
external
80 % internal–20 %
external
70 % internal–30 %
external
60 % internal–40 %
external
50 % internal–50 %
external
40 % internal–60 %
external
30 % internal–70 %
external
20 % internal–80 %
external
10 % internal–90 %
external
Additional sensor only
This parameter set the “weight” to assign to internal and
additional temperature;
Surveillance time for
additional sensor
10..255 (min)
Whenever the thermostat receive a valid data from additio-
nal temperature sensor it consider this value in the calcula-
tion of the measured temperature and reset the internal time
(monitoring time), if the surveillance time expires without
receiving any valid data thermostat start considering only
the internal probe (at 100%) until it receives a new valid data.
(see paragraph 10 “Temperature probe failure / out of range
measurement “)
• If external probe is enabled the monitoring
time is used to check if the additional temperature
sensor periodically sends valid data to the thermostat.
This mechanism avoids to consider as valid some data
which can be old hours or days, for example if the
additional sensor should fail or the thermostat could
not receive data for long time.
• It is strongly recommended to set a value for
surveillance time of the additional sensor more than
twice of the period set for the cyclical sending of the
additional sensor.
• If the external probe is weighted at 100%
(Parameter Ratio between internal and external =
external sensor only) then when the monitoring time
expires the thermostat switch o all controlled loads
until the reception of a valid telegram
ACTUAL SETPOINT object
The ACTUAL SETPOINT object send the setpoint in use
and is sent every time:
• The value of HVAC mode object changes
• The value BASE SETPOINT changes
• The value of SETPOINT ADJUSTMENT object
changes
• After download
• One minute after power on
Control algorithm “2 points on / o ” is used to control
heating or cooling elements that can be controlled by
switching on and o of the same elements, radiators,
under oor heating with on-o valves, boilers, etc. ..
When the thermostat switches to “winter mode”
(heat mode) sends a o command on object ON/OFF
COOLING and operates the control only through the
object ON/OFF HEATING (the object ON/OFF COO-
LING is therefore not updated anymore until it returns
in “cooling mode”).
Therefore in the transition from “ winter” to “summer”
mode sends a o command on ON/OFF HEATING
commands and activates the control through the
object ON/OFF COOLING.
15. Two points on/o
12
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