EbV Product documentation THETA NORM/UNIT
8-17
8.1.19.2 DHW operation in combined devices
If a combined device with MCBA is connected to a controller (RSC, N/U), the display
and operation of the DHW temperatures in the switching times is blocked because
the setpoint can not be set at the controller.
NOTE: The operation of a controller in combination with an MCBA boiler control is a special
case. The MCBA boiler control has its own control, which adjusts the heat generator
setpoint automatically. This way, the adjustment of the heat generator temperature
by a superordinate controller is not necessary. The digital type of boiler control
enables communication with the controller via an interface. The connection to the
interface is on the back of the controller and is designated "HG-BUS".
Function: A maximum of 8 condensing boilers with MCBA boilercontrol can be controlled by a
standard unit. The difference in the condensing boilers takes place via different
addresses at the interface (RMCI).
Effective parameters heat generator:
Parameter Designation:
01 Heat generator type
02 Start-up protection
03 Heat generator minimum temperature limit
04 Heat generator maximum temperature limit
05 Heat generator minimum temperature limiting mode
Effective parameters via MCBA for unmixed circuit:
Parameter Designation:
RED.HEATING Type of reduced mode
HEAT. SYSTEM Heating system (exponent)
03 Room influence (with room unit )
04 Room factor
06 Optimmization (start)
08 Room frost protection limit
09 Room thermostat function
10 Heating circuit outside temperature
11 Constant temperature setpoint
12 Minimum flow temperature limit
13 Maximum temperature limit
14 Heating circuit parallel shift
15 Heating pump (MC1, MC2) extended running time
17 Return flow maximum temperature limit (not for unmixed circuit)
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