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11.4
Cascade control
Before commissioning a cascade installation, several parameters have to be changed.
These parameters can be programmed on the unit itself, without the use of a computer.
NB! Remember that a S-CB
+
400 & 550 boiler is already a cascade of two burners, so cascading these boilers gives
a multiple of 2-burner cascades. Each burner will be given an address and only one burner in the whole cascade will
be designated Master.
Changes in parameter may only be carried out by a skilled commissioning/service engineer, who has had
specific training for setting up this range of boiler. He will be able to check whether the installation functions
correctly after the parameter change has been done.
For programming
all parameters
of the boilers, one needs to have a laptop with the appropriate S-CB
+
software and
an interface cable for connecting the laptop to the boiler control (one order no.: E400278). This software is used for
programming but also shows all measured temperatures and cascade behaviour during operation and service/fault
history.
11.4.1
P
ARAMETER SETTINGS FOR CASCADED BOILERS
Before programming the cascaded boilers, make sure that all boilers are connected (wired) with each other. Use
connection 17 and 18 of each boiler.
NOTICE
: Do not alternate these connections, so always connect 17 to 17 and 18 to 18.
After connection, every boiler must be programmed. This can be done at the control panel. Press the [MENU] button
and select the [PARAMETER] menu. See graphics below.
Operating screen:
H E A T I N G : S T A N D - B Y
> > > : 1 2 3 . 4 ° C ( 1 2 3 . 4 ° C )
Press [MENU]
Main menu screen:
M a i n M e n u
S e t p o i n t s
Select "Parameter" using [◄] & [►] and press [ENTER]
After this, use the password for installer’s level 2.
Parameter menu:
I n s t a l l e r
c o d e
0 0 0 0
Enter the 4-
digit code with the [◄] & [►] and the
[▲] & [▼] buttons and select [ENTER]
The code will blink a few seconds and when entered
correctly, the following parameters will be displayed.
