55
Heat input selection (Direct/Cylinder/External heating)
Setting options:
Heating selection
09:45:29
The system can provide heating with a fixed set value, by applying a heating curve or
by means of an external signal. If no selection is made, the system will charge
to the highest set value of the circuits!
Direct
Cylinder
External
heating
SW
OT
Ext.
0-10 V
Heating zone 1
Heating zone 2
Heating zone 3
Regulated
Regulated
Fig.39
"SW"
(set value)
■
The set values for the heating water buffer cylinder
and heating circuits are fixed.
■
Set values are adjusted in the detailed views of sys-
tem components.
"Set value"
is displayed in each
case.
■
If
"Direct heating"
has been selected,
"Set value
direct"
appears in the centre of the system over-
view. The set value can be adjusted here.
"OT"
(outside temperature)
■
The outside temperature determines the flow tem-
peratures of the heating circuit based on the pro-
grammed heating curve.
■
The heating curves can be adjusted in the detailed
system view of individual heating circuits under
"Curve"
.
■
"Curve"
appears under
"Heating circuit x"
after
you have logged in with the service/expert password.
"Ext. 0-10 V"
(external output signal)
■
The set value for the heating water buffer cylinder
and heating circuits is specified by an external ana-
logue signal (0 V = -10 °C, 10 V = 73 °C or lower if
the maximum flow temperature for the selected heat
pump is below this).
"External heating"
■
Optional external heating is switched on if the heat
pump does not reach a certain minimum flow tem-
perature.
■
It is adjusted in the detailed system view of the boos-
ter heater.
"Heating circuit 1-3"
■
Here you can set the number of heating circuits
installed.
■
Each installed heating circuit appears on the system
screen. Adjustments to the circuit are made individu-
ally.
"Regulated"
■
A mixer must be installed for every regulated heating
circuit.
■
The heating circuit has its own heating curve or its
own set value.
■
If a circuit can also provide cooling, a choice
between cooling or heating is offered; it is not possi-
ble to select both.
Note
This field illuminates green if the selection is
made.
Commissioning, inspection, maintenance
Commissioning the system
(cont.)
5549 991 GB
Summary of Contents for 301.BS090
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