Baxi AGU 2.550 Mode D'emploi page 26

6.3 SCHEME 3
Low - heating circuit (1) and high temperature - heating circuit (2) zones with room thermostat
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 (connect in series to the zone pump, see chap. 8.3)
6 Low temperature zone room thermostat input (12V) (H2-M)
7 Electrovalve or externally powered high temperature zone pump
8 High temperature zone ambient thermostat (for connection see chapter 8.1)
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
Access menu 3
834
HEATING CIRCUIT 1
Connect the low temperature zone protection thermostat in series to pump 3.
7104900.03 (1-11/13)
PARAMETER
Heating circuit 2
H5 input function
Function of extension module 1
Function of H2 input on module 1
Actuator stroke time:
26
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
Room H2 input enabled as low temperature zone
thermostat CH1
Default 180 s Mixing valve close time
DESCRIPTION
room thermostat