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Appendix
Fb Function
06 Reverse control
07 Time until reverse
control
08 Thermal
disinfection
09 Three-point step-
ping control
for DHW heating
10 Storage tank
system
11 Mixing valve
always active
12 Public holiday and
vacation data
apply to DHW
circuit
13 Condensate
accumulation
control
14 Continuous-action
control
DHW heating
Fb Function block, WE Default setting
100
EB 5179 EN
Comments
WE
Anl
Function block parameters / Range of values (default setting)
ON
Not
Co4 -> Fb06 = ON: Reverse control
1, 3, 6
Co4 -> Fb06 = OFF: Set-back operation
Function block parameters:
Activate priority in case of deviation / 0 to 30 °C (0 °C)
ON
Not
Co4 -> Fb07 = ON: Reverse control after 2 minutes
1, 2,
Co4 -> Fb07 = OFF: Reverse control after 10 minutes
3, 6
OFF
Not
Co4 -> Fb08 = ON:
1, 3, 6
Function block parameters:
Day of the week /0 = daily, 1 = Monday, 2, ..., 7 (3 =
Wednesday)
Disinfection temperature / 60 to 90 °C (70 °C)
Charging boost / 0 to 30 °C (5 °C)
Start time / 00:00 to 23:30 h (00:00 h)
Stop time / 00:00 to 23:30 h (04:00 h)
ON
Not
Co4 -> Fb09 = ON: Function block parameters:
1, 2,
K
(proportional gain) / 0.1 to 50.0 (0.5)
P
3, 6
T
(reset time) / 1 to 999 s (200 s)
N
T
(valve transit time) / 15 to 240 s (120 s)
Y
OFF
Not
Co4 -> Fb10 = ON: DHW heating in storage tank system
1, 3, 6
OFF
Not
Co4 -> Fb11 = ON: Heating maintained to prevent circulation
1, 3, 6
losses
OFF
Co4 -> Fb12 = ON: Function block parameter:
Data for heating circuit / 1 to 3 (1)
Not
1, 3, 6
Co4 -> Fb13 = ON: Function block parameter:
Maximum system deviation / 2 to 10 °C (2 °C)
7, 8
For all other systems (Anl) enter under Co5 -> Fb07
OFF
Not
Co4 -> Fb14 = ON: Continuous-action control 0 to 10 V
1, 3, 6
Function block parameters:
K
(proportional gain) / 0.1 to 50.0 (0.5)
P
T
(reset time) / 1 to 999 s (200 s)
N
T
(derivative-action time) / 0 to 999 s (0 s)
V
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