12 / 98
07.04.2009
G2720xx
74 319 0677 0 a
Siemens Building Technologies
Once a signal tone is emitted, the device is deleted and the func-
tion button can be released. The display changes to the first de-
vice in the device list.
A deleted device must be reset to the factory settings by
means of its function button.
Reset devices to factory settings
The room unit
QAW912
can be reset by pressing the function
button
F
for at least 20 seconds. "CLrA" is displayed during this
time
28
. This is followed by a signal tone. After restart, the room
unit changes to the information level.
The room unit is not allowed to be set to operating line 57 or
70, if it is to be reset. The device list is deleted during re-
setting and all previously bound devices must be reset to the
factory settings before binding.
The control actuator
SSA955
, the heating circuit controller
RRV912
, and the radio socket adapter
KRF960
are reset to the
factory settings by pressing function button
F
of the device for at
least 20 seconds. The device then restarts and is no longer con-
nected to the QAW912.
Settings in commissioning mode
Commissioning mode is activated and the operating lines selected
as described in
6
and
7
.
The following operating lines are only visible in commissioning
mode.
The FS column contains the factory setting. These values are
loaded when resetting the device.
Changes in the partner devices are not made immediately
because of the power-saving radio process (up to five min-
utes delay).
Settings for zones 1 + 2
Line
Function, parameter
Unit
FS
Range
Setting
Zone 1
33
Silent mode
- 0FF
0FF / SILE
34
Sensor readjustment
°C
0.0 -4.5..+4.5
35
Min. valve position comfort
% 0
0..100
Zone 2
43
Silent mode
- 0FF
0FF / SILE
44
Sensor readjustment
°C
0.0 -4.5..+4.5
45
Min. valve position comfort
% 0
0..100
Activation of silent mode (33/43) for noise-sensitive zones.
Silent mode increases the actuator’s power consumption,
thus reducing battery life of the control actuators in the corre-
sponding zone.
In the case of unfavorably positioned room temperature sensors
the sensors are adjusted for each zone (34/44).
The minimum valve opening in comfort mode (35/45) serves to
prevent cold surface temperatures in zones with floor heating.
Optimum start / stop control for zones 1 + 2
Line
Function, parameter
Unit
FS
Range
Setting
36
Start control max. advance
hh:mm
00:00 00:00..48:00
37
Stop control max. advance
hh:mm
0:00 0:00..6:00
38
Room temp. rise zone 1
min/K
60 1..600
Display
only
39
Room temp. rise zone 2
min/K
60 1..600
Display
only
To achieve the desired room temperature at the set time, the start
and stop times are automatically adjusted to the building
dynamics (more or less set forward). The maximum values for
setting the time ahead (36/37) always apply to both zones.
During start control optimization, the room unit continuously
measures the rate of the rise in temperature for each zone
(38/39).
Room type
Line
Function, parameter
Unit
FS
Range
Setting
51
Room type zone 1
- rAd.S
rAd.S / rAd.F /
FLO.S / FLO.F
52
Room type zone 2
-
---
--- (inactive) /
rAd.S / rAd.F /
FLO.S / FLO.F
The control speed is adjusted to the heating system and building
structure for each zone with setting "Room type" (51/52).
Zone 1 is always active. Zone 2 is inactive upon delivery (---).
Room
type
Description
P-band
Xp
Integral
action time
Tn
Derivative
action time
Tv
Neutral
zone
---
Zone inactive
Radiator heating slow
(S = slow)
2 K
5400 s
450 s
0.1 K
Radiator heating fast
(F = fast)
2 K
3600 s
540 s
0.1 K
Floor heating slow
(S = slow)
2 K
7200 s
540 s
0.1 K
Floor heating fast
(F = fast)
2 K
5400 s
540 s
0.1 K
The "radiator heating slow" is suitable for radiator heating in
buildings with solid brickwork (heavyweight construction).
The "radiator heating fast" is suitable for radiator heating in build-
ings with light brickwork (lightweight construction).
The "floor heating slow" is suitable for floor heating in buildings
with solid brickwork and floor construction (heavyweight construc-
tion).
The "floor heating fast" is suitable for floor heating in buildings
with light brickwork and floor construction (lightweight construc-
tion).
Radio commissioning
Line Function, parameter
Unit
FS
Range
Setting
53
Bind devices zone 1
- conn
54
Bind devices zone 2
- conn
55
Bind device
Heating request
- conn
56
Test radio connections
- tESt
57
Device list / delete device
- LISt
These operating lines are described in detail in sections "Bind de-
vices", "Radio connection test", and "Display device list/deleting
devices".
Heating request
Line Function, parameter
Unit
FS
Range
Setting
60
Wiring test heating request
-
---
---, OFF, On
61
Valve position: heating request on
% 5 1..30
62
Valve position: heating request off
% 1 1..30
63
Current heating request
-
OFF / On
Display only
The wiring test (60) can be used to check whether a heat gen-
erator connected by means of a KRF960/RRV912 responds to the
heating request from the QAW912 (on/off). Changes in values
take effect immediately. When ending the wiring test with the
Timer/Prog button, value "---" (= inactive) is automatically set and
the heating request is implemented again according to the valve
positions of the two zones.
A heating request is made if the valve position of a zone reaches
at least the value of operating line 61. The heating request is
stopped if the valve position in both zones drops below the value
of operating line 62,
The current status of the heating request is displayed (63).
Automatic switching of daylight saving time
Line Function, parameter
Unit
FS
Range
Setting
64
Summer time start
dd.MM 25.03
01.01..31.12
65
Summer time end
dd.MM 25.10
01.01..31.12
The time on the room unit is set on the Sunday following the set
date (FS = last Sunday of the month) to summer time (daylight
saving time) or winter time (standard time).
If the same date is set in both lines, no automatic changeover to
daylight saving time takes place.
QAW912 device version
Line Function, parameter
Unit
FS
Range
Setting
70
QAW912 device version
-
Display
only
The device version of the partner devices is displayed in the
device list (57) – see "Device list".
