Boiler Cascade Configuration; Accessing The Parameters - Riello Condexa HPR 35 Instructions For The Installer And For The Technical Assistance Centre

GENERAL REMARKS

1.16 Boiler cascade configuration

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 identifies 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.
L - LINE
N - NEUTRAL
- EARTH

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
first 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 flash for 2 seconds
(0.5 sec ON and 0.5 sec OFF).
The 4-digit area will now show <<0000>> flashing (0.5
sec ON and 0.5 sec OFF). The
up so you can enter the password.
N 2
GND (BLACK)
B (YELLOW)
A (ORANGE)
, , and icons light
When the boiler is identified as part of a cascade system,
some functions/displays are simplified or inhibited:
ƒ the boiler works only in HEATING ONLY mode.
ƒ the local thermoregulation functions are disabled
ƒ the SUMMER and WINTER states are disabled
ƒ 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)
ƒ in addition to the traditional rules, the management
of boiler ventilation can also be managed directly by
the external system
ƒ disabling the screed warmer function
ƒ disable OPENTHERM channel (OT +).
REC12
11 GND
12 A
13 B
MB02
+24V (RED)
GND (BLACK)
B (YELLOW)
A (ORANGE)
There are two parameter access levels:
INSTALLER ● SERVICE
(user level requires no password).
Use the buttons next to the
password supplied by the manufacturer for the required
access level.
Press button A next to the
By pressing button B next to the
menu P1 and return to the previous level.
It is now possible to navigate the menu using the arrow
buttons C and D, confirming 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
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.
20
X1
A
B
GND
1 +24V
SB
---
---
SB
X2
SE
SE
COMMON SS/SP
SP
SS
---
1 ---
MSC
PB (L)
X7
PB (N)
X3
PS (L)
X6
PS (N)
X4
NEUTRAL
X5
arrows to enter the
arrow to confirm.
arrow, you can quit
button at any point if you