Dimplex SOLCU3 Installation And Operating Instructions Manual page 41

Display: ..6 Display: ..6
A1: collector array A1: collector array
B1: storage tank 1 B1: storage tank 1
B: storage tank  B: storage tank 
D1: wire bridge D1: wire bridge
F1: external heat exchanger F1: external heat exchanger
R1: storage tank loading pump R1: storage tank loading pump
R: solar circuit pump R: solar circuit pump
R3: switching valve R3: switching valve
T1: collector sensor T1: collector sensor
T: sensor at bottom of storage T: sensor at bottom of storage
tank 1 tank 1
T3: sensor at bottom of storage T3: sensor at bottom of storage
tank  tank 
T4: external heat exchanger T4: external heat exchanger
sensor sensor
EN
  System 17: 1 collector array – 1 storage tank –
1 storage tank with external heat
exchanger – intelligent valve control
Description of the solar function: when the switch-on temperature dif-
ference between the collector array A1 (T1) and one of the two storage
tanks B1, B (T, T3) is exceeded, the solar circuit pump R is switched
on and the switching valve R3 is set to the correct position depending on
the storage tank to be loaded. Both storage tanks B1, B are loaded one
after the other, according to the priority control (chapter 7.5 "Storage
tank priority"), until either the relevant switch-off temperature differ-
ence between the collector array A1 (T1) and storage tanks B1, B (T,
T3) is reached, or a safety limit is reached.
The storage tank loading pump R1 is switched on as soon as the switch-
on temperature difference between the external heat exchanger F1
(T4) and the storage tank B (T3) is reached. The storage tank is loaded
until the switch-off temperature difference between the external heat
exchanger F1 (T4) and the storage tank B (T3) is reached, or until a
safety limit is reached.
NOTE
When no voltage is on the system, the switching valve R3 must be set
to storage tank B1.
Loading strategy of storage tank loading pump R1 and solar cir-
cuit pump R2 for storage tank B2: in the factory, target temperature
control is chosen as the loading strategy. It can be adjusted or changed
using the "Parameters" menu (chapter 7.4 "Parameters").
Loading strategy of solar circuit pump R2 for storage tank B1: in
the factory, temperature differential control is chosen as the loading
strategy. It can be adjusted or changed to target temperature control
using the "Parameters" menu (chapter 7.4 "Parameters").
Activating the system: see chapter 7. "Selecting a system".
Terminal layout
N L N R1 N R2
n.c.
R2
R3
730.137 | 08.37
N R3 1 2 3
n.c. n.c.
L L X
n.c. n.c.
D1
T1
B1
T2
F1
T4
R1
4 5 6
B2
T3
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