Dimplex SOLCU Installation And Operating Instructions Manual page 27

Display: .1.5 Display: .1.5
A1: collector array 1 A1: collector array 1
A: collector array  A: collector array 
B1: storage tank B1: storage tank
D1: wire bridge D1: wire bridge
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: lower area of storage tank T3: lower area of storage tank
EN
  System 5: 2 collector arrays (east/west roof) –
1 storage tank
Description of the solar function: When the switch-on temperature
difference between the storage tank B1 (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 difference
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. When the switch-off temperature difference between the collector
array A1, A (T1, T) and the storage tank B1 (T3) or a safety limit is
reached, the solar circuit pumps R1, R are switched off again.
Loading strategy of solar circuit pump R1: In the factory, temperature
differential control is chosen as the loading strategy for the storage tank
B1. It can be adjusted or changed to target temperature control using
the "Parameters" menu (chapter 7.4 "Parameters").
Loading strategy of solar circuit pump R2: It is not possible to select
whether temperature differential 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 L N R1 N
n.c. n.c.
L
n.c.
T1 T2
R1
730.138 | 08.1
R2 1 2 3 4
n.c. n.c.
L X
n.c. n.c.
D1
B1
T2 T2
T3
R2
T3
5
7