2.4.6
Additional heating and cooling
Some HVAC systems, such as radiant floor heating systems, exhibit a very high thermal inertia,
which translates to slow response times at start-up, or when there are changes in the working
conditions (ambient temperature or desired setpoint).
In order to improve response times for such systems, auxiliary heating or cooling systems
with lower thermal inertia are often installed. These auxiliary systems, often called “second
stage” systems, are temporarily switched on when there is a large difference between the room
temperature and the setpoint, thus contributing to a faster heating or cooling of the room,
and are switched off when this difference becomes smaller and can be handled by the main
system.
The Iddero Verso thermostats can be configured to control these auxiliary heating or cooling
systems, if they are installed. For this, it is necessary to define a temperature range where the
auxiliary system will kick in. This is configured through the “Additional heating (or cooling)
band” parameter:
In Heating mode:
• Additional heating is switched on when the room temperature is less than or equal to
Setpoint - additional heating band
• Additional heating is switched off when the room temperature is greater than or equal to
Setpoint - additional heating band + 0.5 ºC
In Cooling mode:
• Additional cooling is switched on when the room temperature is greater than or equal to
Se additional cooling band
• Additional cooling is switched off when the room temperature is less than or equal to
Se additional cooling band - 0.5 ºC
2.5
Multifunction inputs
Iddero Verso features four multifunction inputs, each of which can be individually configured in
one of the following ways:
• Binary - Push button
• Binary - Switch/sensor
• Temperature probe
2.5
Multifunction inputs
39
