r. F. %
(dT TVKw)
BZ948
BZ947
100%
dT TVKw Increase of flow temperature setpoint
r.h.
Relative humidity
OL
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).
Flow temp diff dewpoint
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
OL
Operating line
Buffer storage tank / primary controller
Line no.
Operating line
962
With buffer
No ¦ Yes
963
With primary controller / 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.
With buffer
It is to be set whether the DHW storage tank receives its heat via the primary controller
or with the help of the system pump (depending on the type of plant).
With primary controller /
system pump
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.
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Siemens Switzerland Ltd
User manual RVS61.843, RVS41.813
CE1U2355en_02
HVAC Products
6 The settings in detail
28. September 2009