Heating Circuits - Cosmo Multi 3 Montage- Und Bedienungsanleitung

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9. HEATING
By means of the adjustment channels TMax and TMin the maximum and minimum values for
the set boiler temperature can be defined.
When the Sen. flow option is activated, the controller monitors whether the heat generator ac-
tually reaches the desired set temperature and, if necessary, adjusts the voltage signal accord-
ingly. In order to do so, the controller checks the temperature at the boiler flow sensor when the
interval has elapsed. If the temperature measured deviates from the set boiler temperature by
more than the hysteresis, the voltage signal is adapted by the Correction value. This process
will be repeated until the temperature measured is identical to the set boiler temperature.
When the Min. runtime option is activated, a minimum runtime can be adjusted for the
demand.
Pump
For loading pumps, the shared relays Pump 1 and Pump 2 are available. Concerning a
demand, the options Delay and Overrun can be activated for the shared relays. The demand
can either be time- or temperature controlled. For temperature-dependent control an allocated
boiler sensor is required.
The Delay option is used for switching on the loading pump with a delay to a demand. If the
adjusted minimum temperature at the allocated sensor is exceeded or the adjusted duration
has elapsed, the allocated output switches on. The Overrun option is used for switching off the
loading pump with a delay to a demand. If the temperature falls below the adjusted remaining
boiler temperature or the adjusted duration has elapsed, the allocated output switches off.
Valve
Valves and parallel relays can use the shared relays Valve 1 and Valve 2. These shared relays
are energised individually or along with a reference relay (e.g. loading pump).
NOTE:
If the 0-10 V demand is used for DHW heating, the voltage signal will always be identical
to TMax.
9.2

HEATING CIRCUITS

The controller has 2 mixed weather-compensated heating circuits and is able to control up to 3
external mixed heating circuits by means of extension modules.
If one or more extension modules are connected, they have to be registered with the controller.
Only registered modules will be available in the heating circuit selection.
If new HC... is selected for the first time, the first heating circuit is allocated to the controller.
In the heating circuit menu, relays for the heating circuit pump and the heating circuit mixer can
be selected.
3 relays are required for a mixed heating circuit.
In the System parameter, a selection can be made between Heat, Cool and Heat/Cool.
If the measured flow temperature deviates from the set flow temperature, the mixer will be
activated in order to adjust the flow temperature correspondingly.
The mixer runtime can be adjusted with the parameter Interval.
Heating system submenu
In the Heating system submenu, a mode for the heating circuit control can be selected and
adjusted. 5 modes are available:
• Constant
• Curve
• Linear
• Room influence
• Room
The calculated set flow temperature is limited by the adjusted values for the maximum flow
temperature and the minimum flow temperature.
Maximum flow temperature ≥ set flow temperature ≥ minimum flow temperature
The remote control allows manual adjustment of the heating curve (± 15 K). Furthermore, the
heating circuit can be switched off or a rapid heat-up can be carried out by means of the remote
control.