Dimplex SOLCU Installation And Operating Instructions Manual page 26

System 4: 1 collector array –
1 storage tank with zone loading
Description of the solar function: The solar circuit pump R1 is switched
on as soon as the switch-on temperature difference between the collec-
tor array A1 (T1) and the storage tank B1 (T) is reached. When the
switch-off temperature difference between collector array A1 (T1) and
storage tank B1 (T) or a safety limit is reached, the solar circuit pump
R1 is switched off again.
Description of the zone loading: The zone loading valve R is switched
on (loading of the upper storage tank zone) as soon as the temperature
difference between the collector array A1 (T1) and the upper loading
zone (T3) has reached the switch-on temperature difference. When the
switch-off temperature difference or a safety limit is reached, or the
solar circuit pump R1 is switched off, the zone loading valve R switches
off.
NOTE
When no voltage is on the system, the switching valve R must be set to
the lower loading zone (T).
Loading strategy of solar circuit pump R1: In the factory, target tem-
perature control is chosen as the loading strategy for the storage tank
B1. It can be adjusted or changed using the "Parameters" menu (chapter
7.4 "Parameters").
Activating the system: see chapter 7.. "Selecting a system".
Terminal layout
N L N R1 N
n.c. n.c. n.c. n.c.
L L
n.c. n.c.
T1
T3
R2
R1
6
R2 1 2 3 4 5
X
n.c.
D1
B1
T2
EN
 
Display: .1.4 Display: .1.4
A1: collector array A1: collector array
B1: storage tank B1: storage tank
D1: wire bridge D1: wire bridge
R1: solar circuit pump R1: solar circuit pump
R: switching valve R: switching valve
zone loading zone loading
T1: collector sensor T1: collector sensor
T: lower area of storage tank T: lower area of storage tank
T3: sensor storage tank T3: sensor storage tank
zone loading zone loading
730.138 | 08.1