36
To do the default reset, access the advanced menu by holding the
button ‘
OK
’ on the ‘
MOrE
’ parameter, and the press together the
buttons ‘ ’, ‘ ’ and ‘ ‘.
CONTROL OF A PELLET STOVE
The chronostat can be configured for temperature regulation by
switching On and Off a pellet stove. The receiver’s output will have
to be connected to the On/Off input of the pellet stove. In order to
reduce the number of switching On and Off cycles of the stove,
configure the parameters:
- OPWM: PWM regulation on receiver’s output to ‘no’.
- HYSt: Room temperature regulation hysteresis to 1.0 °C
- tMIn: Minimum output ON time to 30 minutes
TEMPERATURE REGULATION
The thermostat can drive the output on receiver, in ON/OFF or PWM
mode.
The valve’s drive in PWM mode allows proportional regulation and
therefore allows to regulate the room temperature with maximum
comfort and saving.
However, different rooms require different settings to obtain precise
regulation.
The parameters responsible for regulation quality are:
- ‘bp‘ Proportional band
- ‘t int’ Integral time
The proportional band in °C is the difference between set-point and
room temperature that ensures the valve is fully opened.
The narrower the proportional band, the more reactive is the system
upon changes of the room temperature.
An excessively narrow proportional band setting can generate room
temperature oscillations or system instability. An excessively large
setting may lead to not reaching the set temperature on set-point, in
the room. No integral action is done when the integral time is set to
zero and the regulation is of P (Proportional) type.
Regulation will be of P + I (Propor Integral) type by setting
an integral time different from zero. The shorter the integral time
the stronger is the integral action, vice-versa, a long integral time
generates a mild integral action.
A mild or missing integral action may prevent the set temperature on
set-point to being reached in the room.
An excessively strong integral action may cause the room temperature
to oscillate.
Depending on the room these parameters may require adjustment in
order to obtain the best performance.
TIME SCHEDULE SHARING WITH OTHER WIRELESS
THERMOSTATS
In a system made by one chronostat and some more plain thermostats
one in each room, it is possible to make the thermostats regulate
according the time schedule programmed in the chronostat.
This can be achieved using a multi-channel receiver and associating
the outputs driven by the themostats to the output driven by the
chronostat. In this way a chronostat and the thermostats associated
with it will form a ‘zone’. For example, in a home, it would be possible
- ENGLISH -
