User Manual

Fan operation
The fan is switched to the selected speed via control output Q1, Q2 or Q3.
When the function “Temperature-dependent fan control“ is activated (can be
selected with DIP switch no. 1), the fan is switched on / off depending on the
temperature, that is, together with the valve.
It is switched off by
• leaving the heating or cooling sequence, provided the function “Temperature-
dependent fan control “ is activated, or
• manually changing to OFF '
', or
• activating an external operating mode changeover switch, provided plant conditions
do not call for energy saving, or
• turning the controller’s power supply off
Operatingmodes
The following operating modes are available:
Normal operation
Heating or cooling mode with automatic changeover and with manually selected fan
speed III, II or I. In normal operation, the controller maintains the adjusted setpoint. In
operating mode selector position
, the controller is switched off.
Energy saving mode
In energy saving mode, the setpoint of heating is 16 °C and the setpoint of cooling
28 °C, independent of the position of the setpoint knob. This operating mode will be
activated when input D1 for operating mode changeover is active and DIP switch
no. 2 is set to ON.
Avoiding damage
resulting from mois-
ture
To avoid damage due to moisture in very warm or humid climatic zones resulting from
lack of air circulation in energy saving mode, DIP switch no. 1 must be set to OFF. With
this configuration, the fan is energy saving mode operates at the speed manually se-
lected or, if the operating mode selector is set to OFF
, at speed I.
Operating mode
changeover switch
A changeover switch can be connected to status input D1-GND. When the switch
closes its contact (caused by an open window, for instance), the operating mode will
change from normal operation to energy saving mode (provided DIP switch no. 2 is set
to ON), or from normal operation to standby (provided DIP switch no. 2 is set to OFF).
Ordering
When ordering, please give name and type reference.
The QAH11 temperature sensor (can be used as a changeover sensor), the change-
over mounting kit and the valves are to be ordered as separate items.
Equipment combinations
Type of unit Type reference Data sheet
Temperature sensor
QAH11.1
1840
Changeover mounting kit
ARG86.3
1840
Motoric actuator (radiator valve)
SSA31...
4893
Motoric actuator (small valve 2,5 mm)
SSP31…
4864
Motoric actuator (small valve 5,5 mm)
SSB31...
4891
Motoric actuator (valve 5,5 mm)
SSC31…
4895
Motoric actuator (valve 5,5 mm)
SQS35…
4573
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Siemens Building Technologies Room temperature controller CE1N3026en
HVAC Products 12.06.2003