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11. Regulation sensor(s)
The sensor used for control can be:
- the internal controller sensor
- an external sensor selected between
AI1,AI2,AI3
.
- the internal controller sensor combined to any of the remote sensor
AI1,AI2,AI3
with a certain weight This permits to obtain
an optimized control in rooms where temperature may be different from one side to another
To use the internal sensor as a control sensor, set parameter
I06
to 0.
To use external sensor
AI1
as a control sensor, set parameter
M07
=0 and
I06
=100.
To use the internal sensor together with sensor
AI1
with a 25% weighting of remote sensor
AI1
, set parameters
M07
=0 and
I06
=25.
The operating temperature becomes Treg=[Ti (100 -
I06
) + (T
AI1
x
I06
)] / 100
with Ti=internal sensor temperature, T
AI1
=remote sensor temperature
AI1
.
In the case one or more sensors are configured as external working sensors (
M07
=0 and/or
M09
=0 and/or
M11
=0), only one
sensor is considered to be combined with the internal sensor: the sensor with highest priority.
The sensor
AI1
has priority over sensor
AI2
, and sensor
AI2
has priority over sensor
AI3
.
Note: if no external sensor is used as a remote sensor (
M07
≠0,
M09
≠0,
M11
≠0), the internal sensor is used as the control sen
-
sor even if
I06
is different from 0.
12. Automatic season changeover with water sensor (
M01
=2 or 5)
The selection of working season si done automatically (for operating modes
M01
=2 or 5) by external sensor set as water sen
-
sor (
M07
=1 or
M09
=1 or
M11
=1). According to parameter’s value
I54
, season changeover is done on the following way:
I54
=0 o 1
Summer
Winter
Temp. water
I16
I15
On startup, if temperature of water sensor is between
I16
and
I15
the working season is heating (if
I54
=0) or cooling (if
I54
=1). If temperature of water sensor then increases and reaches
I15
, the working season becomes heating. If temperature
of water sensor then decreases and reaches
I16
, the working season becomes cooling.
I54
=2
Summer
Winter
Temp. water
I16
I15
0,5°C
[1,0°F]
0,5°C
[1,0°F]
On startup, if temperature of water sensor is between
I16
and
I15
the working season is not define and no regulation takes
place. If temperature of water sensor then increases and reaches
I15
, the working season becomes heating. If temperature
of water sensor then decreases and reaches
I15
- 0.5°C [1.0°F], the working season is not defined and regulation is stopped.
If temperature of water sensor then decreases and reaches
I16
, the working season becomes cooling. If temperature in-
creases and reaches
I16
+ 0.5°C [1.0°F], the working season is not defined and regulation is stopped.
13. Frost protection
If operating temperature falls below
I14
(frost setpoint), heating outputs are activated and the fan starts at maximum speed (if
heating outputs are present) and icons and
flash.
If operating temperature rises above
I14
+ 2°C, the frost protection is deactivated.
Note: frost protection is active even if device is OFF
ON
OFF
Temp.
2°C
Anti Frost
AFS
(
I14
)
