Siemens QAA55.110 User Manual

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Siemens Switzerland Ltd User manual RVS61.843 CE1U2355en_02
HVAC Products 6 The settings in detail 23. November 2007
r. F. %
(dT TVKw)
BZ948
BZ947
100%
dT TVKw Flow setpoint increase
r.h. relative humidity
BZ Operating line
The dewpoint temperature is determined on the basis of the relative humidity of the
indoor air and the associated room temperature.
To prevent the formation of condensation on surfaces, a minimum limit is applied to the
flow temperature so that it remains above the dewpoint temperature by the value set
here (950).
The function can be deactivated with setting – – –.
The humidity sensor must be assigned to one of the Hx inputs as "Rel room humidity
10V", and a room temperature sensor must also be available (assigned to the Hx input
as "Room temp 10V" or room unit).
TA
TVKw
TTP
T
BZ 950
TVKw Flow temperature setpoint cooling
TTP Dewpoint temperature
TA Outside temperature
BZ Operating line
Buffer storage tank / primary controller
Line no. Operating line
962 With buffer
No ¦ Yes
963 With prim contr/system pump
No ¦ Yes
If there is a buffer storage tank, this setting must be made to define whether the cooling
circuit can draw cooling energy from it.
This determines whether the cooling circuit is supplied via the primary controller or with
the help of the system pump (depending on the type of plant).
Remote control
Line no. Operating line
969 Optg mode changeover
None ¦ Off ¦ Automatic
In the case of external changeover via inputs H1 / H2 / H3, the operating mode to be
used can be selected.
Flow temp diff dewpoint
With buffer
With prim contr/system
pump

Siemens QAA55.110 Specifications

General

Brand	Siemens
Model	QAA55.110
Category	Controller
Language	English