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

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S-CB Px 120 Manual 74
11.2.6. 0-10 V
DC
R
EMOTE BURNER INPUT CONTROL
The burner input 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 "2" so the supplied 0-10V dc signal will control the burner input. The standard facto-
ry setting is “1”, temperature set point control. Possible settings are:
0 =
0-10 V control off
1 = 0-10 V temperature set point control active
2 = 0-10 V burner input control active
See also the following graph for the relation between the burner input and the control signal.
11.2.7. T
IMER CONTACT FUNCTION
This function can be activated when using an external night reduction timer for heating. This timer contact can be
connected to the thermostat terminals (connections 13-14).
P5 AB Timer Contact (1=on) (display A9).
When this parameter is activated and:
- The thermostat terminals are bridged (timer contact closed), the normal day-time temperature is used as set
point.
- The thermostat terminals are not bridged (timer contact open), the night reduced temperature is used as set
point.
0-10 Vdc control signal
bur
ne
r
inp
ut
[%
]
P2GB off P2GA on P2GC max.
Min. burner input %
fixed value, e.g. 25%
Max. burner input %