en
27
Installation
Commissioning
Adjustments
Tr
oubleshooting
Data comm
unication
0
10
20
30
40
50
60
70
80
90
100
110
120
3
4
5
6
7
8
9
10
10 x 1
15 x 1
22 x 1
28 x 1,5
∆
T circ – circulation pipe time constant
The adjustment value
∆
t circ
determines the time
a heat impulse needs to pass through the entire
circulation pipe between the HW fl ow sensor and
the circulation return sensor. The controller takes
this time into account when stabilising the circula-
tion system to the required disinfection temperature
T-disinf set
. The controller waits until T-disinf set is
reached at the circulation return sensor. The
∆
t circ
value determines the maximum waiting time. When
the set value
T-disinf set
is not reached at the
circulation return sensor after the waiting time has
elapsed, the controller increases the pump speed of
the primary pump and thus the temperature at the
HW fl ow sensor.
Time constant
∆
t circ per 10 m copper pipe depending on the fl ow rate and for different pipe diameters
Flow rate in l/min
Time constant in s per 10 m
