Functions of the heat exchanger
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
Folge (sequence) =
Außentemp.-abhängig
(outdoor temperature dependent)
Folgefreigabetemp.
(temperature for enabling the se-
quence)
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
Folge (sequence) =
Außentemp.-abhängig
(outdoor temperature dependent)
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
Folgeverzögerung (sequence
delay)
WE
Adjustment range
Outdoor tempera-
Outdoor temperature dependent, unrestricted,
ture dependent
parallel
12 °C
–40 to 50 °C
WE
Adjustment range
Outdoor tempera-
Outdoor temperature dependent, unrestricted,
ture dependent
parallel
WE
Adjustment range
10 min
0 to 90 min
24
EB 5571-2 EN