29
99B138120x-mub-en | 2014/11 | V05
EN
9.2.2 Circulation
Switches a circulation pump on and off on a temperature, time and/or
tap controlled basis. These three types of control can be combined as
required. In order to activate the circulation the speed setting of the pump
has to be confirmed and one operation mode has to be activated.
Temperature control
: If the temperature in the circulation return falls
below the T
on
value, then the circulation pump is switched on until the T
off
temperature is reached. The control of temperature with activated time
control is time restricted.
Time control
: The circulation pump is switched on when the current time
lies within one of 3 configurable time windows.
•
permanently switched on, when the temperature control is deactiva-
ted (
oFF
)
•
temperature controlled, when the temperature control is activated (
on
)
Tap control
: Short tapping (< 5 s) switches the circulation pump for
the switch-on duration on. After the switch-on duration has elapsed, the
circulation pump is switched off for at least the time of the delay. The tap
control works independently from the time control.
Connecting the operation modes:
When time and temperature control were selected, these functions are
linked with AND. The flow control is always linked with OR and though
has the highest priority, because it is the direct requirement of the user.
When the desired temperature in the circulation circuit is reached, the flow
requirement prematurely ends (for combination ‚tc’ + ‚cc’+ ‚fc’).
You can find instructions for the setting of the operating modes on the pages
30-31.
Note
24h after the last start of the circulation pump a hygienic flushing of
about 5 min flushes the system. This setting can not be changed.
In the status display
24h
is displayed.
Characteristic
min.
max.
Factory
setting
Activation
on, oFF
oFF
Speed control
0%
100%
40%
Temperature control
(
tc
)
on, oFF
oFF
Switch-on temperature T
on
0 °C
T
off
– 2 K
55 °C
Switch-off temperature T
off
T
on
+ 2 K
95 °C
60 °C
Time control
(
cc
)
on, oFF
oFF
Day
day: 1
till
day: 7
-
Time window 1 start/end
1on, 1off
00:00
23:59
6:00/8:00
Time window 2 start/end
2on, 2off
00:00
23:59
12:00/13:30
Time window 3 start/end
3on, 3off
00:00
23:59
18:00/20:00
Tapping control
(
fc
)
on, oFF
oFF
Switch-on duration
Ton
1 min
10 min
2 min
Wait time
Toff
0 min
60 min
10 min
