oPeration
menu structure
18
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remote control fe7
This menu item is only displayed when the FE7 remote control is
connected.
HeatinG circ preSelection
The FE7 remote control can be selected for both heating circuits.
This parameter lets you choose which heating circuit the remote
control is to act on. Depending on the remote control preselection,
the actual room temperature can be checked under INFO / SYSTEM
/ ROOM TEMPERATURE.
room influence
Standard setting 5 adjustable from ---- via 0 to 20 Dashes (----)
in the display:
With the FE7 remote control connected, the room temperature
sensor only serves to record and display the actual room temper-
ature; it has no influence on the actual control. The remote control
can be used to adjust the room temperature for heating circuit 1
or 2 by ± 5 °C in automatic mode only. This set value adjustment
applies to the current heating time, not to the setback time.
At the same time, the setting "0 to 20" serves to control the room
temperature-dependent night setback. This means that the heat-
ing circuit pump is switched off at the point of changeover from the
heating into the setback phase. It remains off until the actual room
temperature falls below the set room temperature. After this, the
system continues to regulate in weather-compensated mode.
If you want the room temperature to be taken into account, set
the room temperature sensor influence to a value > 0. The room
sensor influence has the same effect as the outside temperature
sensor has on the return temperature, except that the effect is 1
to 20 times greater, depending on the factor set.
-
room temperature-dependent return / flow temperature
with weather compensation
With this type of control, a control cascade is formed from both
weather-compensated and room temperature dependent return/
flow temperature control. This means that the weather-compen-
sated return/flow temperature control sets a default return/flow
temperature that is corrected by the overriding room temperature
control in accordance with the following formula:
∆ϕ
R
= (ϕ
RSOLL
− ϕ
RIST
) * S * K
Because a substantial proportion of the control is already han-
dled by the weather-compensated control, the room temperature
sensor compensation factor K can be set lower than with pure
room temperature control (K=20). The figure indicates the control
method with the set factor K=10 (room influence) and a heating
curve S=1.2.
-
room temperature control with weather-compensation
This type of control offers two main benefits:
Incorrectly set heating curves are corrected by the room sensor
influence
K
; whilst the smaller factor
K
means the control unit
works in a more stable manner.
However, observe the following for all control units with room
temperature sensor influence:
- The room temperature sensor must capture the room tem-
perature accurately.
- Open doors and windows greatly affect the control result.
- All radiator valves in the lead room must be fully open at all
times.
- The temperature inside the lead room affects the entire heat-
ing circuit.
If you want the room temperature to be taken into account, set the
room temperature sensor influence to a value > 0.
20
30
40
20
50
60
70
80
90
19
17 18
21 22 23 24 25
0
10
0
20
-20
15 10
5
-5 -10 -15
Y
X 1
Y
X 2
1
1
1
2
3
4
5
26
�0
3�
01
�1
91
7
Y
Flow temperature [°C]
X 1 Room temperature [°C]
X 2 Outside temperature [°C]
1
Room temperature sensor influence at K = 10 and S = 1.2
and control dev/- 2 K
2
Heating curve S = 1.2
3
Weather-compensated set flow temperature at ϕ
A
= - 10
°C
4
Weather-compensated set flow temperature at ϕ
A
= 0 °C
5
Weather-compensated set flow temperature at ϕ
A
= + 10
°C
room correction
You can use this parameter to calibrate the measured room tem-
perature.
pumpcycleS
-
Heating circuit pump control
The PUMP CYCLES parameter only applies to the direct heating
circuit 1, i.e. for heating circuit pump 1.
This parameter can be switched ON or OFF. In the OFF position,
the heating circuit pump will not cycle. It will operate constantly.
It is only switched off in summer mode.
As soon as you set the parameter to ON, the heating circuit pump
will be switched in line with a fixed temperature curve for the
outside temperature.
The heating circuit pump start pulse is always 5 minutes.
The heating circuit pump for heating circuit 1 always starts with
each heat pump start. The pump runs on for 5 minutes after the
heat pump has been shut down. This is where the start-up dura-
tion is brought to bear, e.g. at an outside temperature of 5 °C, the
pump starts 3 times per hour for 5 minutes respectively.
