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11
PARAMETER SETTINGS
11.1 Preface
General information about controller settings can be
found in the relevant Technical Information leaflet. Howe-
ver, some of the most important settings are listed
below.
Parameter
Function
3 - 7
Number of Slaves and their
addressee
3 - 8
Controller type
3 - 9
Minimum modulation
5 - 0
Maximum boiler output
5 - 1
Group partitions
5 - 2
Cut-in output of the follow-up
boiler
5 - 3
Return temperature control:
minimum boiler temperature or
return temperature
11.2 Some important parameter settings
The table underneath contains important parameters for
a boiler cascade set-up. For a more detailed description
we refer to the Technical Information of the controller.
Please note: with the exception of parameters 3 – 7
all the settings as mentioned underneath have to be
effectuated with the Master controller.
Explanation
- the Master controller determines with these parameters how
many Slave controllers have been connected (0 – 4).
- the Slave controllers must have parameter settings F1 for the
first slave, F2 for the second slave, etcetera.
- B1: this controller commands an ON-OFF boiler
- B2: this controller commands a 2-stage boiler
- The Master controller can command up to 8 boilers. Positions
not used must be set with: --
Attention: Parameter 5 – 6 settings enable for each boiler to
know which controller has been connected. Thus, the type of
boiler command has to be set at 2 different places.
Boiler part load has to be filled out here (2-stage)
Full boiler load must be filled out here.
By creating group partitions, automatic sequence changeover
can be realised, and boilers can be switched off depending on
outside temperature. Boilers in group nr. 1 will always be in
service at full load, therefore condensing boilers are the
preferred boiler type.
The following boiler will be switched on when the last boiler
operates at the set percentage as follows:
- ON-OFF boiler: 100 %
- 2-stage boiler: value to be set: 80 %
If a return water sensor is fitted, the controller ensures that the
return water temperature does not fall below set point, by
means of mixing valve activation. The boiler series as specified
below must have the following parameter 5 – 3 settings:
Gas 2000/3000
Gas 2000/3000 ECO
Gas 3002/6002
Gas 3002/6002 ECO
P 200
P 300
P 500
Gas 350/450/550
14
Rematic 142 - 155
35°C
0°C
45°C
0°C
gas 45°C / oil 40°C
gas/oil 45°C
gas/oil 40°C
0°C
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