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10
Installation Commissioning Settings AccessoriesTroubleshooting
Display
The controller calculates the temperature difference between solid fuel boiler sen-
sor S1 and store sensor S2. If the difference is larger than or identical to the adjust-
ed switch-on temperature difference and if the adjusted minimum temperature of
the solid fuel boiler, the pump (R1) will be switched on and the store will be loaded
until the switch-off temperature difference or the maximum store temperature is
reached.
Afterheating (R2) can be carried out with a thermostat function (S3). If the value
at S3 reaches the switch-on temperature for the afterheating, the relay is switched
on. If the value exceeds the switch-off temperature for the afterheating, the relay
is switched off again.
1 (1) A 240 V~
1 (1) A 240 V~
R1
R2
Made in Germany
DeltaTherm
®
FK
Temp. Sensor Pt1000
S2S1 S3 VBus
11 12 13
T2A
100 ... 240 V~
50-60 Hz
NNR2
LN
R1
2019
18
171615
S4
—
—
PWM1/2
S1
S2
R1
R2
S3
22
3 3
System 3 and 7
Store loading via solid fuel boiler and afterheating
System 3
System 7
Relay allocation
PE R1 R2 Mains
11 12 13 17 18 15 16 19 20
N L N L N L
Protective
earth
conductor
Pump After-
heating
Mains
Sensor allocation
S1 S2 S3
Solid fuel
boiler
Store base Store top
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