Steca TR A502 TT - Back-up Heating

34
742.114 | 14.50
EN
Display Characteristic min. max.
Factory
setting
Activation on, oFF
oFF
Output (circulation pump) free output R1/R2/R
S
–
Pump type (R1, R2 only) AC, HE
1)
AC
Pump characteristic (HE only) bA, bb, C (see p. 16) –
Temperature control on, oFF
oFF
Sensor input for circulation
return temperature sensor
1 ... 5 –
Switch-on temperature T
on
32 °F T
off
– 4 F 85 °F
Switch-off temperature T
off
T
on
+ 4 F 200 °F 95 °F
Time control on, off
off
Time window 1 start/end 0:00 23:59 6:00/8:00
Time window 2 start/end 0:00 23:59 12:00/13:30
Time window 3 start/end 0:00 23:59 18:00/20:00
1)
Notice
Standard pump: Set AC!
High-efficiency pump: Set HE!
External relay: Set AC pump type!
10.3.3 Back-up heating
Performs temperature-dependent switching of an output for heating a stor-
age tank using an oil or gas burner. The function can be time restricted.
Temperature control: If the temperature in the storage tank falls below
the T
on
value, then the external heating is switched on until the T
off
tem-
perature is reached.
Time restriction: The function is executed when the current time lies
within one of 3 configurable time windows.
Display Characteristic min. max.
Factory
setting
Activation on, oFF
oFF
Output (external heating) free output R1/R2/R
S
–
Pump type (R1, R2 only) AC, HE
1)
AC
Pump characteristic (HE only) bA, bb, C (see p. 16) –
Sensor input for readiness part of
the storage tank
1 ... 5 –
Switch-on temperature T
on
32 °F T
off
– 4 F 130 °F
Switch-off temperature T
off
T
on
+ 4 F 200 °F 140 °F
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
6:00/8:00
12:00/13:30
18:00/20:00
1)
Notice
Standard pump: Set AC!
High-efficiency pump: Set HE!
External consumer (e.g. 115 V relay): Set AC pump type.