Dimplex SOLCU Installation And Operating Instructions Manual page 34

System 12: 2 collector arrays (east/west roof) –
1 swimming pool in stand-alone operation
with external heat exchanger
Description of the solar function: When the switch-on temperature
difference between the swimming pool C1 (T3) and one or the other of
the collector arrays A1, A (T1, T) is reached, then either solar circuit
pump R1 for collector array A1 (T1), or solar circuit pump R for collector
array A (T) is switched on, depending on where the temperature dif-
ference occurs. When the switch-on temperature difference is reached
for both collector arrays A1, A (T1, T), then both pumps R1, R are
switched on. The pumps switch off independently of each other, when
either the relevant switch-off temperature between one of the collector
arrays A1, A (T1, T) and the swimming pool C1 (T3) or a safety limit is
reached. The swimming pool pump is controlled externally.
Loading strategy of solar circuit pump R1: In the factory, the load-
ing strategy is set to temperature differential control. This cannot be
altered.
Loading strategy of solar circuit pump R2: It is not possible to select
whether temperature difference control or target temperature control
is to be used as the loading strategy. Solar circuit pump R operates
according to the switch-on and switch-off temperature difference
parameter values.
Activating the system: see chapter 7.. "Selecting a system".
Terminal layout
N N L L N N R1 R1 N N
n.c. n.c. n.c. n.c. n.c. n.c. n.c. n.c.
L L L L
n.c. n.c.
n.c. n.c.
T1 T2
R1
R2
34
R2 R2 5 5
1 1 2 2 3 3 4 4
X X
n.c. n.c.
D1
C1
T3
EN
 
Display: .3.5 Display: .3.5
A1: collector array 1 A1: collector array 1
A: collector array  A: collector array 
C1: swimming pool C1: swimming pool
D1: wire bridge D1: wire bridge
F1: external heat exchanger F1: external heat exchanger
R1: solar circuit pump 1 R1: solar circuit pump 1
R: solar circuit pump  R: solar circuit pump 
T1: collector sensor 1 T1: collector sensor 1
T: collector sensor  T: collector sensor 
T3: sensor swimming pool T3: sensor swimming pool
730.138 | 08.1