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Fb Function
WE
Anl
Function block parameter
/ Range of values (default setting)
09 Automatic change
in lag/lead se-
quence
ON
5, 7
Co5 -> Fb09 = ON: Change in lag/lead sequence as per
setting in Co5 -> Fb10
Co5 -> Fb09 = OFF: Change in lag/lead sequence only in the
event of a malfunction
10 Condition for
change in lag/lead
sequence
ON
5, 7
Co5 -> Fb10 = ON: Change in lag/lead sequence acc. to
operating hours
Co5 -> Fb10 = OFF:
option:
1: Change in lag/lead sequence acc. to outdoor temperature
2: Change in lag/lead sequence acc. to capacity
11 Displaying
lead/collective
alarm
OFF
5, 7
Co5 -> Fb11 = ON: Displaying lead
BA2 = 0 (Füh1), BA2 = 1 (Füh2)
Co5 -> Fb11 = OFF: Displaying collective alarm with BA2
12 Common return
flow boost
OFF 4 to 7 Co5 -> Fb12 = ON: RK1 as return flow boost for lead boiler
13 Heating circuit with
DHW heating
OFF 1 to 3
14 Continuous running
of pumps
ON 1 to 7 Co5 -> Fb14 = ON: Continuous running of lead boiler pump
Function block parameters:
Pump lag time / 0 to 90 min (5 min)
Boiler flow limit / 20 to 120 °C (55 °C)
15 External
demand (AE1)
OFF 1 to 7 Co5 -> Fb15 = ON:
Function block parameter:
Boost / 0 to 30 °C (0 °C)
16 Control signal
deactivation
OFF 1 to 7 Co5 -> Fb16 = ON: Control signal deactivation after 3 x T
Y
19 Parallel operation
of boilers
OFF
7
Co5 -> Fb19 = ON: Both boilers operate in parallel regardless
of the system load. The boilers are started up one after the
other taking into account the delay and lockout times.
20 Burner activation
not dependent on
sensor VFg
OFF 4 to 7 Co5 -> Fb20 = ON: Boilers are controlled exclusively ac-
cording to the boiler sensors VF1 and VF2. VFg has no affect
on the control loop.
Fb = Function block, WE = Default setting
90
EB 5474 EN
Appendix
Содержание TROVIS 5474
Страница 79: ...System Anl 3 System Anl 4 EB 5474 EN 79 Electrical connection...
Страница 80: ...System Anl 5 System Anl 6 80 EB 5474 EN Electrical connection...
Страница 127: ...EB 5474 EN 127 Index Key number 1732...
Страница 129: ...EB 5474 EN 129...
Страница 130: ...130 EB 5474 EN...