
Note!
The proportion of outdoor air can be suppressed during the warm-up phase with Fb43 = ON.
Functions
WE
Configuration
Sensor F7, mixed air or extract air temperature
Fb7 = ON,
option:
mixed air sensor
Operating action Y2
OFF
Fb22
Circulating air mode after system start-up
OFF
Fb43 (not with supply air control)
Parameters
WE
Range of values
K
P
Mixed air chamber
0.5
0.1 to 99.9
T
N
Mixed air chamber
60 sec 1 to 999 sec
T
V
Mixed air chamber
– – –
– – – to 999 sec
Minimum outdoor air rate
20 %
0 to 100 %
Mixed air temperature set point
18 °C
10 to 30 °C
EB 5477 EN
47
Control methods and system components
Y3
Y2
t
A
< t
Ab
t
A
> t
Ab
Y2
Y1
Y3
Y1
Y2
Y3
Y1
Fig. 16 · Various output signals, e.g. in system code number 4
Outdoor temperature
With outdoor temperature feedforwarding
Control variable
Control variable
Outdoor temperature
Control
signal
Control
signal
With outdoor and exhaust air temperature
feedforwarding
Without outdoor and exhaust air temperature
feedforwarding
Control variable
– System deviation
+
–
deviation
–
deviation