Strebel S-CB Px 120, Руководство по установке, эксплуатации и техническому обслуживанию

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S-CB Px 120 Manual 73
11.2.2. R
OOM THERMOSTAT ON
/
OFF
A room thermostat with a fixed set point and using an ON/OFF control can be connected to the boiler (connec-
tions 13-14). Changing the flow temperature set point and activation of a timer program can be done by this room
thermostat or by programming the boiler settings. See chapter 10.10.
11.2.3. R
OOM THERMOSTAT
OPEN THERM
An RC OpenTherm controller can be connected to the boiler for temperature reading(s) and remote programming
(connections 11-12).
11.2.4. O
UTSIDE TEMPERATURE RELATED FLOW CONTROL
The flow temperature can be calculated by using the measured outside temperature for controlling the boiler. See
for detailed information § 10.11.
11.2.5. 0-10 V
DC
R
EMOTE FLOW TEMPERATURE SET POINT
The flow temperature is controlled by connecting an external 0-10 Vdc signal to the boiler (connections 13-14).
P5 BB Analogue input Config (0=off 1=temp 2=power) (display D1).
This parameter must be set at "1" so the supplied 0-10V dc signal will control the temperature set point.
Possible settings are:
0 =
0-10V control off
1 = 0-10V temperature set point control active
2 = 0-10V burner input control active
P5 AI Minimum Temperature 0-10V input (display D2).
The standard starting temperature of the heat demand, when the minimum voltage signal is sent to the boiler. The
factory settings for all heating applications are working fine and it is therefore advised not to change these set-
tings. If changes are needed always consult the manufacturer for advice.
See also the following graph for the relation between the temperature and the control signal.
0-10 Vdc control signal
te
m
p
e
ra
tu
re
s
e
tt
in
g
°
C
P2GB off P2GA on P2GC max.
P6BA max. temperature set point
e.g. 90°C
P5AI min. temperature set point
e.g. 20°C (default)