Samson TROVIS 5179 Mounting And Operating Instructions page 65

A heat meter with pulse output connected at input V
the system flow rate (parameter code: U) or the system capacity (parameter code: P). The pulse
weighting of the heat meter (WMZ) and the type of limitation selected must be entered. The dis-
played value corresponds to the unit l/pulse or kWh/pulse.
When the pulse rate reaches the current maximum limit, the flow set point of the control circuit
RK1 is reduced. How strongly the controller responds is determined by the Proportional-action
coefficient for limitation .
Example to determine the limit value:
If a capacity of 30 kW is to be limited, the following limit value must be set for a heat meter with
an output of one pulse per kilowatt-hour:
Settings for capacity limitation
Functions
Limitation of heat meter (WMZ)
Pulse input for flow rate or capacity limitation
Parameters
Maximum capacity of the entire system
Maximum capacity of the DHW heating
Proportional-action coefficient for the limitation
Select CONST additionally for:
Maximum capacity of the heating
Select 4-Pt additionally for:
Outdoor temperature Point 1
Maximum capacity limitation, points 1 to 4
30 kW
=
P
1 KWh / pulse
Point 2
Point 3
Point 4
(terminal 30) can be used either to limit
max
=
30 pulse / h
WE Configuration
OFF Co5 -> Fb08 = OFF
OFF
Co5 -> Fb09 = ON, select: P
CONST:
4-Pt:
10
Pulse weighting / 0.1 to 10
WE Parameter level / Range of values
50 kW PA5 / 0.1 to 5999 kW
50 kW PA5 / 0.1 to 5999 kW
1.0 PA5 / 0.1 to 10
50 kW PA5 / 0.1 to 5999 kW
–15 °C PA5 /–30 to 90 °C
– 5 °C
5 °C
15 °C
50 kW PA5 / 0.1 to 5999 kW
System-wide functions
Limitation constant
Limitation acc. to
4-point characteristic
EB 5179 EN
65