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Appendix
Co2: Separate heating circuit (systems Anl 1 to 3)
Note!
The configuration table "Co2: Separate heating circuit" is only available in conjunction with
configuration Co5 -> Fb13 = ON.
Fb Function
00 Reserved
01 Return flow sensor
RüF2
09 Control circuit HK2
deactivated
10 Type of characteristic ON 1 to 3 Co2 -> Fb10 = ON: Weather-compensated control,
11 Summer mode
14 Continuous control
RK2
15 Three-step pulsing/
on/off RK2
Fb = Function block, WE = Default setting
86
EB 5474 EN
WE
Anl
Function block parameter / Range of values (default setting)
OFF 1 to 3 Co2 -> Fb01 = ON: Return flow sensor active
OFF 1 to 3 Co2 -> Fb09 = ON: HK2 = OFF
option: 1
Co2 -> Fb10 = OFF: Fixed set point control
ON 1 to 3 Co2 -> Fb11 = ON: Summer mode active
Function block parameters:
START summer mode/ 01.01 to 31.12 (01.06)
STOP summer mode/ 01.01 to 31.12 (30.09)
Outdoor temperature limit / 0 to 40 °C (18 °C)
OFF 1 to 3 Co2 -> Fb14 = ON: Continuous control
Function block parameters:
K
(proportional gain) / 0.1 to 99.9 (6)
P
T
(reset time) / 0 to 999 s (120 s)
N
T
(derivative-action time) / 0 to 999 s (0 s)
V
ON 1 to 3 Co2 -> Fb15 = ON: Three-step pulsing
Function block parameters:
K
(proportional gain) / 0.1 to 99.9 (6)
P
T
(reset time) / 0 to 999 s (120 s)
N
T
(derivative-action time) / 0 to 999 s (0 s)
V
T
(valve transit time) / 5 to 240 s (120 s)
Y
Co2 -> Fb15 = OFF: On/off switching
4-point characteristic
2
Gradient characteristic
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