E93.1001EN.C Manual CD
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88
11.3
Cascade control
Before commissioning a cascade installation, a number of parameters has to be adjusted.
These parameters can be programmed on the unit itself, without the use of a computer.
Changes in parameter may only be carried out by a skilled commissioning/service engineer, who has
had specific training for setting up the CD
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range water heaters. He will be able to check whether the
installation operates correctly after the parameter change has been done.
For programming
all parameters
of the water heaters, one needs to have an interface cable for connecting the
laptop to the water heater control and a laptop with the appropriate EHS software. Both are available as one
service set, part.no. E04.016.586. This software is used for programming but also shows all measured tempera-
tures and cascade behaviour during operation and service/fault history.
P
ARAMETER SETTINGS FOR CASCADE SET
-
UPS
Before programming the cascaded water heaters, make sure that all water heaters are connected (wire) with each
other. Use connection 17 and 18 of each water heater.
Remind
: do not alternate these connections, so always connect 17 to 17 and 18 to 18.
After connection every water heater 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:
W A T R H T R : b o i
l e r
o f f
> > > : 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.
