This configuration prevents the start-up of the lag heat exchanger when it is foreseeable that the
output of the lead heat exchanger is sufficient.
2
[Übersicht > Parameter > Allgemein > Folgebetrieb]
Parameter
WE
Adjustment range
Folge (sequence) =
Außentemp.-abhängig
(outdoor temperature dependent)
Outdoor tempera-
ture dependent
Outdoor temperature dependent, unrestricted,
parallel
Folgefreigabetemp.
(temperature for enabling the se-
quence)
12 °C
–40 to 50 °C
4.2.3 Sequence lock over the binary input
The binary input UE11 is used to lock the sequence. The input of the outdoor temperature is de-
termined by the binary input. The outdoor sensor is not required.
2
[Übersicht > Parameter > Allgemein > Folgebetrieb]
Parameter
WE
Adjustment range
Folge (sequence) =
Außentemp.-abhängig
(outdoor temperature dependent)
Outdoor tempera-
ture dependent
Outdoor temperature dependent, unrestricted,
parallel
4.2.4 Sequence delay
If the energy of one heat exchanger is insufficent to heat the flow temperature to the required set
point, the next heat exchanger is first switched on when required after the time in
Sequence de-
lay
has elapsed. This prevents the brief operation of a heat exchanger.
2
[Übersicht > Parameter > Allgemein > Folgebetrieb]
Parameter
WE
Adjustment range
Folgeverzögerung (sequence
delay)
10 min
0 to 90 min
Functions of the heat exchanger
EB 5571-2 EN
24