English (GB)
13
9. Automatic Night SetBack
9.1 Basis for Automatic Night SetBack
Fig. 11
Automatic Night SetBack
To ensure the optimum function of Automatic Night SetBack, the
following conditions must be fulfilled:
• The pump must be installed in the flow pipe.
The Automatic Night SetBack function does not work if the
pump is installed in the return pipe.
• The system (boiler) must incorporate automatic control of the
liquid temperature.
Activate Automatic Night SetBack by pressing
.
See section
7.5 Push-button for activation of Automatic Night
.
Light in
shows that Automatic Night SetBack is active.
9.2 Function of Automatic Night SetBack
Once Automatic Night SetBack has been activated, the pump
changes automatically between normal duty and night setback.
See section
12. Pump settings and pump performance
Changeover between normal duty and night setback is dependent
on the flow-pipe temperature.
The pump automatically changes over to night setback when a
flow-pipe temperature drop of more than 10-15 °C within approx.
2 hours is registered. The temperature drop must be at least
0.1 °C/min.
Changeover to normal duty takes place without a time lag when
the flow-pipe temperature has increased by approx. 10 °C.
T
M
05
81
51
20
13
Warning
Pumps built into gas boilers with a small water
content must never be set to Automatic Night
SetBack.
Note
If speed I, II or III is selected, the Automatic Night
SetBack is deactivated.
Note
It is not necessary to reactivate Automatic Night
SetBack if the power supply has been switched
off.
If the power supply is switched off when the
pump is running on the curve for Automatic Night
SetBack, the pump will start in normal operation.
See section 12. Pump settings and pump
performance.
The pump changes back to the curve for
Automatic Night SetBack when the condition for
Automatic Night SetBack is fulfilled again. See
section 9.2 Function of Automatic Night SetBack.
Note
If the heating system is "undersupplied"
(insufficient heat), check whether Automatic
Night SetBack is activated. If yes, deactivate this
function.
AUTO
ADAPT
I
II
III
AUTO
ADAPT
I
II
III
W
AUTO
ADAPT
I
II
III
ALPHA2
W
AU
T
T
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
AD
DAP
PT
P
P
P
D
DAP
PT
P
P
P
P
HA2
