Temperature control
Scenario no. 1: the boiler is equipped with a BUS connection
The boiler and the module communicate for optimised operation.
In this scenario, several types of temperature control are possible
depending on the confi guration and the installation's parameter set-
tings. Please refer to the boiler instructions.
It is advisable to check that the Active Regulation System (SRA or
temperature control) is active by ensuring that the "SRA" is displayed
on the boiler screen. If this is not shown, activate this function by pres-
sing the SRA key on the boiler. The water fl ow temperatures for each
of the two zones can be perfectly adapted to the specifi cations of the
two installations.
Scenario no. 2: the boiler does not have a BUS connection
In this scenario, the module cannot perform temperature control.
The water fl ow temperature for Zone 1 is defi ned by the boiler setting.
For Zone 2, the module then controls the motorised mixing valve in
order to maintain a fi xed water fl ow temperature, as defi ned by para-
meter 502.
Thermoregulation
GB
51