9
en
2.7
Terminal allocation without cable link
The controller calculates the temperature difference between collector sensor
S1 and store sensor S2. If the difference is larger than or identical to the adjusted
switch-on temperature difference (DT O), the solar pump will be activated by
relay 1, and the store will be loaded until the switch-off temperature difference
(DT F) or the maximum store temperature (S MX) is reached.
Sensor S3 is used for a thermostat function, which operates relay 2 for backup
heating purposes, when the adjusted thermostat switch-on temperature (BH O)
is reached. This function can optionally be combined with up to 3 adjustable time
frames.
Sensor S3 can optionally be used as the reference sensor for the thermal disinfec-
tion function (OTD) or the store emergency shutdown option (OSEM).
Sensor S4 can optionally be connected. For heat quantity measurement, S1 and S2,
S1 and VFD or VFD and S4 respectively can be used as flow and return sensors.
WARNING!
Electric shock!
Upon opening the housing, live parts are exposed!
Î
Always disconnect the device from power supply
before opening the housing!
Note:
With this connection type, the immersion heater is supplied with power
indirectly via the mains connection.
Î
Remove the pre-connected cable links.
Symbol
Description
S1
Collector sensor
S2
Store sensor base
S3
Store sensor top
R1
Solar pump
R2-L
Mains conductor
R2-L
Conductor electric immersion heater
R2-N
Neutral conductor mains
R2-N
Neutral conductor electric immersion heater
⏚
Protective conductor
L/N
Mains terminals
1
2
S1
S2
S3
S4
3
4
5
6
T2A
100 ... 240 V~
50-60 Hz
VBus
9 10 11 12
13 14
DeltaSol
®
AL E HE
1 (1) A (100 ... 240) V~
14 (3) A (100 ... 240) V~
R1
R2
IP 20
7
8
PWM
PFB
LED
N
N
N
17
18 19
16
15
R2-N
R2-N
L
L
20 21
R2-L
R2-L
R1
22 23
24 25 26 27
VFD
S1
S2
S3
R1
S4 / VFD
VFD
100 … 240 V~
100 … 240 V~
max. 3 kW
max. 14 A
