GENERAL REMARKS
20
1.17 Accessing the parameters
Press the MENU button for at least 2 seconds to access
menu P1, where you can program the parameters. The
rst item of the menu will appear on the display.
Access to parameter programming of the TECHNICAL menu
is protected by a password; by pressing MENU again for
at least 2 seconds, the letters PWD will ash for 2 seconds
(0.5 sec ON and 0.5 sec OFF).
The 4-digit area will now show <<0000>> ashing (0.5
sec ON and 0.5 sec OFF). The , , and icons light
up so you can enter the password.
X7
X6
X1
X2
X3
X4
13 B
12 A
11 GND
A
B
GND
+24V
+24V (RED)
GND (BLACK)
B (YELLOW)
A (ORANGE)
B (YELLOW)
GND (BLACK)
A (ORANGE)
+24V (RED)
GND (BLACK)
B (YELLOW)
A (ORANGE)
L - LINE
N - NEUTRAL
- EARTH
SE
SB
SB
SE
SS
SP
COMMON (SS/SC)
SS
SP
COMMON SS/SP
SE
SE
SB
SB
NEUTRAL
PS (L)
PS (N)
PB (L)
PB (N)
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1
1
REC12
MSC
MB02
N 2
1.16 Boiler cascade conguration
Condexa HPR can be inserted in a cascade control sy-
stem from 2 to 4 boilers.
Use the MB02 connector of the boiler board and the
X1 connector of the MSC board to make the connection
between the modules and the cascade manager.
The REC12 performs the system control function.
Program parameter P9.01 by setting
it to a value between 1 and 4. This
value identies the unique address
of the boiler in the cascade system.
9
If two identical addresses are
assigned to the units by mistake, a communication
error code will appear on the display.
Once this operation has been carried out, with the boi-
ler not in heating request and after a few minutes, the
display will show the value of its address.
Refer to the REC12 manual to continue with system pro-
gramming.
There are two parameter access levels:
INSTALLER ● SERVICE
(user level requires no password).
Use the buttons next to the arrows to enter the
password supplied by the manufacturer for the required
access level.
Press button A next to the arrow to conrm.
By pressing button B next to the arrow, you can quit
menu P1 and return to the previous level.
It is now possible to navigate the menu using the arrow
buttons C and D, conrming access to a sub-menu with
the arrow button A or by returning to the previous level
using the arrow button B.
Press and hold (>2 sec) the button at any point if you
want to stop navigating and return to the main screen.
The interface automatically returns to the main screen if
no buttons are pressed for 60 seconds.
When the boiler is identied as part of a cascade system,
some functions/displays are simplied or inhibited:
the boiler works only in HEATING ONLY mode.
the local thermoregulation functions are disabled
the SUMMER and WINTER states are disabled
the direct management of the HEATING SETPOINT is di-
sabled the heat request arrives only from the external
system in the form of a percentage of power supplied
by the boiler (percentage in relation to the MAXIMUM
to MINIMUM programmed in the single boiler)
in addition to the traditional rules, the management
of boiler ventilation can also be managed directly by
the external system
disabling the screed warmer function
disable OPENTHERM channel (OT +).
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