en
9
Installation
CommissioningSettingsTroubleshooting
Accessories
Display
System 2 and 6
Store loading via solid fuel boiler and return preheating
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.
With another temperature differential function (S3 heat source / S4 heat sink)
return preheating (heating circuit backup) is possible via a valve (R2).
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
S3
R2
S4
R1
22233 3
System 2
System 6
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 Return
valve
Mains
Sensor allocation
S1 S2 S3 S4
Solid fuel
boiler
Store
base
Store top Heating
circuit
return