Baxi AGU 2.550 Mode D'emploi page 28

7.2 SCHEME 5
Three zones with room unit (heating circuits 1, 2 and 3)
1 External sensor - terminal block M2 (4-5) on the boiler
2 Circuit 1 zone pump or electrovalve (QX21-N)*
3 Circuit 1 ambient unit - terminal block M2 (1-2-3) of boiler
Circuit 2 zone pump or electrovalve (QX22-N)*
4
* The AGU 2.550 accessory cannot directly command a 3-wire electrovalve. A relay with an exchange contact must be used
instead.
Room units 3 - 5 and 7 are connected in parallel.
The room units can directly control their respective zones according to the desired room temperature. Enter menu 2 from the
Remote Control, as described in section 5, and make the following settings:
PROGRAMME
MENU
ROW
5715
5721
5977
CONFIGURATION
6020
6030
6031
6032
742
HEATING CIRCUIT 1
1042
HEATING CIRCUIT 2
1342
HEATING CIRCUIT 3
The room units can directly control their respective zones according to the desired room temperature. If, when turning the knob
B on the main menu, the display visualises the boiler flow temperature instead of the ambient temperature, parameters 742 and
1042 have not been set correctly.
7104900.03 (1-11/13)
5
6
7
PARAMETER
Heating circuit 2
Heating circuit 3
H5 input function
Extension module 1 function
Module 1 QX21 relay output
Module 1 QX22 relay output
Module 1 QX23 relay output
Flow setpoint with room
thermostat
Flow setpoint with room
thermostat
Flow setpoint with room
thermostat
28
Circuit 2 ambient unit - terminal block M2 (1-2-3) of boiler
Circuit 3 zone pump or electrovalve (QX23-N)*
Circuit 3 ambient unit - terminal block M2 (1-2-3) of boiler
VALUE TO SET
On
On
None
in terminal block M1 (1-2)
Multifunctional
Heating pump CH1 Q2 Circuit 1 pump/electrovalve control
Heating pump CH2 Q6 Circuit 2 pump/electrovalve control
Heating pump CH3 Q20 Circuit 3 pump/electrovalve control
Enable modulating flow temperature
---
Enable modulating flow temperature
---
Enable modulating flow temperature
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DESCRIPTION
Heating circuit 2 enable
Heating circuit 3 enable
Thermostat disable
on boiler
-
(heating circuit 1)
(heating circuit 2)
(heating circuit 3)