102
910.001.1 - EN
ISTRUCTIONS PERTAINING TO THE INSTALLER
The boiler parameters may only be modified by professionally qualified staff proceeding as follows:
a) press the , keys on the boiler’s front panel together for about 3 s until the parameter H90 appears on
the display;
b) press the keys to select the parameter for modification;
c) press the and keys to modify the parameter;
d) press the key to exit the programming function.
The following are the parameters generally used:
14. SETTING THE BOILER PARAMETERS
If the electronic circuit board is replaced, make sure that the parameters set are those specific to the boiler
model, as indicated in the documentation available from the authorised Service Centre.
Parameter
N.
Description
Factory setting
H90
Minimum D.H.W. temperature setting (°C).
10
H91
D.H.W. activation program
(0=active; 1=not active)
1
H505
Maximum temperature (°C) of the central heating circuit HC1 corresponding to:
- the main circuit in systems with just one zone;
- the circuit of the zone where the QAA73 room temperature control device is installed in case
of systems with more than one high-temperature zone;
- the high temperature zone circuit in mixed systems and if the SIEMENS AGU2.500 accessory
is used.
80
H507
Maximum temperature (°C) of the central heating circuit HC2 of a system with more than one zone,
corresponding to the circuit of the low-temperature zone if the SIEMENS AGU2.500 accessory
is used.
80
H516
Automatic Summer / Winter switching temperature (°C).
20
H532
Selection of temperature curve of central heating circuit HC1 (see Graph 1)
15
H533
Selection of temperature curve of central heating circuit HC2 (see Graph 1)
15
H608
PWM (%) Setting: Ignition load
See
table 2
H611
Speed setting (rpm) : Ignition load
H609
PWM Setting (%) : minimum power
H541-H610
PWM Setting (%) : maximum power Central heating / Domestic hot water
H612
Speed setting (rpm) : minimum power
H536-H613
Speed setting (rpm) : maximum power Central heating / Domestic hot water
H544
Pump post-circulation time in central heating mode (min)
3
H545
Burner operating pause time between two start-ups (s)
180
H552
Hydraulic system setting (see instructions provided with the SIEMENS AGU2.500 accessory)
H552 = 50 with AGU2.500
and with QAA73 + zones with room thermostat
H552 = 80 with RVA 47
2
H553
Configuration of heating circuits
H553 = 12 with AGU2.500
21
H615
Programmable function:
9
H632
Configuration of system with supplementary pump
H632 = 00001111 with AGU2.500
and with QAA73 + zones with room thermostat
H632 = 00001111 with RVA 47
The value of Bit could be 1 or 0.
Press the keys 5 and 6 to select the bit to modify (b0 is the bit on the right, b7 is the last bit on
the left).
To modify the Bit value press on the keys 7 and 8
00001100
H641
Fan overrun time setting (s)
10
H657
Setpoint of autonomous ANTILEGIONELLA function
60...80 °C = setting temperature range
0 = function inactive
0
