User manual

36
741.011 | 12.18
EN
11.3.11 Heating return increase
T
T
F
unc
SET
on
A heating return increase using a three-way valve switches on and off as
follows:
If the temperature difference between the tank and the heating return
exceeds the value T
diff on
, then the three-way valve is switched on (heat-
ing return increase on), until the temperature difference drops below
T
diff off
.
The three-way valve must be connected to output R1.
Display Characteristic min. max.
Factory
setting
Activation on, oFF
oFF
Sensor input for storage tank
temperature
1 ... 5 –
Sensor input for heating return
increase temperature
1 ... 5 –
Switch-on temperature difference
T
diff on
T
diff off
+ 2 K 50 K 6 K
Switch-off temperature difference
T
diff off
0 K T
diff on
– 2 K 3 K
11.3.12 Thermostat
T
F
unc
SET
on
Switches output R1 on and off, depending on the temperature range
of any desired sensor. The function can be time restricted and is set for
heating or cooling as follows:
Heating: The T
on
value is set lower than T
off
.
When the sensor temperature drops below T
on
, the output is switched on
until the temperature exceeds T
off
.
Cooling: The T
on
value is set higher than T
off
.
When the sensor temperature exceeds T
on
, the output is switched on
until the temperature drops below T
off
.
Time restriction: The function is executed when the current time lies
within one of 3 configurable time windows.
Note
The T
on
value can be set to the same value as T
off
. However, this setting
has no practical application.
Display Characteristic min. max.
Factory
setting
Activation on, oFF
oFF
Pump type AC, HE
1)
AC
Pump characteristics (only HE) AA, Ab, C (see p. 15)
–
Sensor input 1 ... 5 –
Switch-on temperature T
on
0 °C 180 °C 20 °C
Switch-off temperature T
off
0 °C 180 °C 20 °C
Time restriction on, oFF
oFF
Time window 1 start/end
Time window 2 start/end
Time window 3 start/end
0:00
0:00
0:00
23:59
23:59
23:59
00:00/00:00
00:00/00:00
00:00/00:00