Baxi AGU 2.550 Mode D'emploi page 24

6.1 SCHEME 1
Low temperature zone with ambient unit - heating circuit (1)
High temperature zone with ambient thermostat - heating circuit (2)
1 External sensor - terminal block M2 (4-5) on the boiler
2 Low temperature zone mixing valve (QX21-N-QX22)
3 Low temperature circuit pump (QX23-N)
4
Low temperature circuit probe (BX21-M)
5 Low temperature circuit safety thermostat (12V) (H2-M)
6 Ambient unit - terminal block M2 (1-2-3) on the boiler
7 Electrovalve or externally powered high temperature zone pump
8 High temperature zone ambient thermostat (for connection see chapter 8.1)
Connect the safety thermostat protecting the low temperature circuit to the H2 (H2-M) input of the AGU 2.550 accessory. Enter
menu 2 from the Remote Control, as described in section 5, and make the following settings:
PROGRAMME
MENU
ROW
5715
5977
CONFIGURATION
6020
6046
742
HEATING CIRCUIT 1
834
The room unit can directly control the low temperature zone according to the required room temperature. If, when turning the knob
B on the main menu, the display visualises the boiler flow temperature instead of the ambient temperature, parameter 742 has
not been set correctly.
7104900.03 (1-11/13)
PARAMETER
Heating circuit 2
H5 input function
Extension module 1 function
Function of H2 input on
module 1
Flow setpoint with room
thermostat
Actuator stroke time:
24
VALUE TO SET
On Heating circuit 2 enable
Room Circuit 2 thermostat enable
thermostat CH2 (terminal block M1 (1-2) on boiler)
Temps / mode
Low temperature zone enable
CH1
Limit thermostat H2 input enabled as low temperature zone
CH
Enable modulating flow temperature
---
(low temperature zone)
Default 180 s Mixing valve close time
DESCRIPTION
protection