Siemens QAA73 Manuale utente
Pag. 1/5
17.10.2008 Service instructions Lmu34 sw 2.09
Condensing gas boilers
NOVADENS …
USING THE SIEMENS TEMPERATURE
REGULATOR QAA73 TO PROGRAM
BOILERS PARAMETERS
GB
Pag. 2/5
17.10.2008 Service instructions Lmu34 sw 2.09
The editable parameters are those between 504 and 652 (parameters 650 and 652 are reading only
parameters).
Proceed as follows to access this parameters:
1) Simultaneously press keys 1-4on QAA73 temperature regulator for about 3 seconds. The
“Initialising BMU parameters” appears on the display (line 725).
2) Simultaneously press keys 1-2on QAA73 temperature regulator for about 3 seconds. The
“Initialising BMU SERVICE” (line 504 “TkSmax”).
3) Press keys 1-2to scroll through the list of parameters.
4) To change the value of the selected parameter, press key 3-4 to decrease or increase the value
respectively.
5) Press key 5 to enter the new values and exit programming of the boiler’s electronic main board.
1
2
3
4
5
DEFAULT PARAMETERS LIST
NOVADENS
1.240
240
280
QAA73
parameters
Description of parameters
24
kW
20/24 kW
24/28 kW
Pag. 3/5
17.10.2008 Service instructions Lmu34 sw 2.09
504
Maximum flow setpoint temperature (°C)
80
516
Summer / winter changeover temperature
30
532
Heating curve slope heating circuit HC1
15
534
Room temperature adjustment (°C)
0
536
Maximum speed (rpm) at maximum output in heating mode
(maximum speed limitation)
5900
4300
5050
541
Maximum degree of modulation in heating mode (%)
100
60
74
544
Overrun time (s) of pumps
180
545
Minimum burner pause time (s)
(heat demand-dependent switching hysteresis)
180
555.0
Chimney sweep function
ON =active
OFF=deactivate
OFF
555.1
Legionella function
ON =active
OFF=deactivate
ON
555.2
Setting
ON = hydraulic differential pressure switch
OFF = pressure switch
OFF
555.3…555.7
NOT used
-
608
Setting value of modulation air at ignition load (PWM%),
55
50
55
609
Setting value of modulation (PWM%) air at low-fire; lower limit
modulation range
15
11
16
610
Setting value of modulation (PWM%) air at high-fire; upper limit
modulation range
100
88
100
611
Setting value of required speed (rpm) at ignition load
4500
4300
4400
612
Setting value of required speed (rpm) at low-fire
1850
1600
2000
613
Setting value of required speed (rpm) at high-fire
5900
5100
5900
DEFAULT PARAMETERS LIST
NOVADENS
1.240
240
280
QAA73
parameters
Description of parameters
24
kW
20/24 kW
24/28 kW
Pag. 4/5
17.10.2008 Service instructions Lmu34 sw 2.09
614
Open Therm input setting (QAA73)
0= only with QAA73
1= with Low Voltage room thermostat RT or QAA73
2= factory default –only for LUNA IN models
0
641
Setting value post purge time (s)
10
677
Preset output BMU (controller stop function)
max = 100 %
min = 0 %
0
678
MANUFACTURE information
205
202
205
651
Hydraulic system adjustment
1
2
652
MANUFACTURE information
1240
2242
2280
ONLY READING PARAMETERS
700 **
1st previous fault code counter
-----
702
1st internal previous fault code
-----
703 **
2nd previous fault code counter
-----
705
2nd internal previous fault code
-----
706 **
3rd previous fault code counter
-----
708
3rd internal previous fault code
-----
709 **
4th previous fault code counter
-----
711
4th internal previous fault code
-----
DEFAULT PARAMETERS LIST
NOVADENS
1.240
240
280
QAA73
parameters
Description of parameters
24
kW
20/24 kW
24/28 kW
Pag. 5/5
17.10.2008 Service instructions Lmu34 sw 2.09
712 **
5th previous fault code counter
-----
714
5th internal previous fault code
-----
715
Actual fault code counter
-----
** The counter shows the number of times of same error happened
728
HMI code of 1st previous error counter
-----
729
HMI code of 2nd previous error counter
-----
730
HMI code of 3rd previous error counter
-----
731
HMI code of 4th previous error counter
-----
732
HMI code of 5th previous error counter
-----
733
HMI code of actual error counter
-----
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