85
11.2.3 R
OOM THERMOSTAT
OPENTHERM
An RC OpenTherm controller can be connected to the boiler for temperature reading(s) and remote programming
(connections 13-14).
11.2.4 O
UTSIDE TEMPERATURE RELATED FLOW CONTROL
The flow temperature set point can be calculated by using the measured outside temperature for controlling the
boiler. See for detailed information chapter 10.11.
11.2.5 0-10
VDC
REMOTE FLOW TEMPERATURE SET POINT
The flow temperature set point is controlled by connecting an external 0-10 Vdc signal to the boiler (connections 15-
16).
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
settings. 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.
Curve and values only for illustration purposes, programmed parameter values can deviate!
0-10 Vdc control signal
tem
p
erature s
ett
ing
°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)
