54
925.916.2 - GB
InstructIons pertaInInG to the InstaLLer
- fault messages
In the event of fault, the display panel on the QAA73 shows the flashing symbol . Press the information key ( ) to display
the error code and a description of the fault (see table on paragraph 3.9).
Line no.
70
72
74
75
77
78
79
80
90
91
Default value
15
85
Light
On HC1
On
0
0
—.-
10 or 35
24 h/day
range
2.5…40
25…85
Light, Heavy
on HC1
on HC2
on HC1+HC2
nil
On - off
0…360 min
0…360 min
2.5…40
—.-
= not active
10 or 35…58
24 h/day
TSP HC-1h
TSP HC
TSP DHW
parameter
HC1 gradient
Selection of central heating circuit temperature curve “kt”
HC1 max. output
Central heating system maximum output temperature
Type of building
Room compensation
Activation/deactivation of the influence of the room temperature. If it is deactivated,
the outdoor temperature sensor must be installed.
Automatic adaptation of the temperature curve “kt” in relation to the room
temperature.
Opt Start Max
Maximum time the boiler is switched on ahead of the timed program to optimise
the temperature in the premises.
Opt Stop Max
Maximum time the boiler is switched off ahead of the timed program to optimise
the temperature in the premises.
HC2 gradient
Selection of temperature curve “kt” of the HC2 central heating circuit of the low
temperature zone if the SIEMENS AGU2.500 accessory is used.
DHW Red Setp
Minimum temperature of the domestic domestic hot water
DHW program
Selection of the type of timed program for domestic hot water.
24 h/day
= always on
PROG HC-1h
= as HC1 central heating program less one hour
PROG HC
= as central heating program
PROG ACS
= specific domestic hot water program (see also program
lines 30-36)
15.3 ConneCtIng the outDoor temperature sensor probe
15-3. connecting the outdoor temperature sensor probe
The SIEMENS model QAC34 outdoor temperature sensor probe (optional accessory) must be connected to terminals 7-8
of terminal board M2 in figure 11.
The procedures for setting the gradient of the temperature curve “kt” vary depending on the accessories connected to
the boiler.
a) Without accessories:
The temperature curve “kt” must be selected by setting parameter H532 as described in section 17 “setting the boiler
parameters”.
See graph 1 for selecting the curve referred to a room temperature of 20°C.
The chosen curve can be shifted by pressing the (2), button (2) on the boiler control panel, and modifying the value
displayed by pressing the and . keys. See graph 2 for curve selection. (The example show in graph 2 refers to the
curve Kt=15.
Increase the value displayed if the room temperature required is not reached inside the premises for central heating.
