Setting The Boiler Parameters - Baxi 45 HTE Installation, Operation And Maintenance Manual

14. setting the boiler parameters

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:
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 1)
H533 Selection of temperature curve of central heating circuit HC2 (see Graph 1)
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 with QAA73 + zones with room thermostat
H552 = 80 with rVA 47
H553 Configuration of heating circuits
H553 = 12 with AGu2.500
H615 programmable function:
Configuration of system with supplementary pump
H632 = 00001111 with AGu2.500 and with QAA73 + zones with room thermostat
H632 = 00001111 with rVA 47
H632 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
H641 Fan overrun time setting (s)
Setpoint of autonomous AntileGionellA function
H657
60...80 °C = setting temperature range
0 = function inactive
IstructIons pErtaInIng to thE InstallEr
62
Factory setting
10
1
80
80
20
15
15
See
table 2
3
180
2
21
9
00001100
10
0
912.403.1 - IE