1
51
8Z
01
60
70
80
90
50
30
7
0
6
0
50
40
1
2 3
1
Setpoint knob with scale – only with QFA1001
2
Setpoint setting spindle
3
Scale for setpoint adjustment with QFA1000
Mounting notes
The base has cable entries at the rear for mounting the room hygrostat on recessed
conduit boxes. In the case of wall mounting, appropriate holes at the top or bottom can
be knocked out.
The unit should be mounted about 1.5 meters above the floor and at least 0.5 meters
from the closest wall.
Natural circulation of room air must be ensured at the location where the hygrostat is
mounted (no drafts, not in corners, not behind curtains, not in the vicinity of doors and
windows, and not on outer walls). Sources of heat or refrigeration (radiators, comput-
ers, TV sets, concealed heating pipes, hot and cold water pipes) must be located at
adequate distances.
The unit must not be exposed to direct solar radiation.
The room hygrostat is supplied complete with Mounting Instructions.
Disposal
The devices are considered electronics devices for disposal in term of European
Directive 2012/19/EU and may not be disposed of as domestic waste.
•
Dispose of the device via the channels provided for this purpose.
•
Comply with all local and currently applicable laws and regulations.
Technical data
Setpoint setting range
30…90 %
Humidity measuring element
stabilized plastic texture band
Control mode
2-position
Time constant (v = 0.2 m/s)
approx. 5 min
Switching differential X
Sd
refer to "Type summary"
Setting accuracy
1)
±
5 % r.h.
Temperature influence
+
0.5 % r.h. / K
Humidity calibration at
55 % r.h., 23 °C
Long-term stability
approx.
−
1.5 % r.h. / a
Type of switch
Contact rating
Maximum
Minimum
microswitch (1-pole potential-free changeover switch)
5(3) A, AC 250 V
100 mA, AC 24 V
External protection
Fuse slow max. T5A
Protection degree of housing
IP20 according to EN 60529
Protection class
II according to EN 60730-1
Screw terminals for
max. 2 x 1.5 mm
2
Operating elements
Legend
Mounting choices
Mounting location
Mounting Instructions
Functional data
Degree of protection
Electrical connection
3/4
Siemens
Room hygrostats QFA1001, QFA1000
CE1N1518en
Building Technologies
2014-07-30
