Potterton Sirius FS 50 Installation, Operation & Maintenance Manual page 33

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:
parameter n. Description
h90 Minimum D.H.W. temperature setting (°C).
h91
D.H.W. activation program
(0=active; 1=not active)
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.
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.
h516
Automatic Summer / Winter switching temperature (°C).
h532
Selection of temperature curve of central heating circuit HC1 (see Graph 2)
h533 Selection of temperature curve of central heating circuit HC2 (see Graph 2)
h608 PWM (%) Setting: Ignition load
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)
h545 Burner operating pause time between two start-ups (s)
h552 Hydraulic system setting (see instructions provided with the SIEMENS AGU2.500 accessory)
( * ) H552 = 50 with AGU2.500 and QAA73
H552 = 80 with RVA 47
h553 Configuration of heating circuits
( * ) H553 = 12 with AGU2.500
h615
Programmable function:
h632 Heat demand to be supported by the system pump
( * )
H632 = 00001111 with AGU2.500 and RVA 47
h641 Fan overrun time setting (s)
Setpoint of autonomous ANTILEGIONELLA function
h657
60...80 °C = setting temperature range
0 = function inactive
Table 3
( * ) For these parameters see section 10.1 - 10.2 - 10.3 (hydraulic system).
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.
InstructIons pertaInInG to the InstaLLer
33
Factory setting
10
1
80
80
20
15
15
See
table 2
10
180
2
21
9
00001100
10
0
912.822.1 - GB