Installation guide

PE
L
N
N
A1
N
A2
N
A3
WMM
T1
T2
T3
T4
T5
T6
mains voltage area low voltage area
10.0 Installation of solar controller
General connection guidelines.
In the case of all connecting wires the outer sheath
should be stripped back to 80mm.The individual conductor
sleeving should be stripped approx. 10mm.
Cables are inserted in the controller through knockouts
provided in the controller backplate.
Flexible cables must be secured against straining by
suitable strain relief bushes or devices.
The controller must be earthed.
10.4 230/240V
~
connections
For 230V connections you must follow the following
points:
The mains supply to the controller should be via a
suitable double pole isolating switch with a contact
separation of at least 3mm in both poles. Additionally for
unvented solar cylinders the controller should be wired
via the solar coil over temperature cutout such that
power is interrupted to the controller and hydraulic
station in the event of the unvented cylinder overheating
(see Fig. 22).
Controllers are intended for the operation in 230/240V~
/50Hz mains.Any motorised valves connected must be
suitable for this voltage.
All earth wires must be connected to terminals marked
with PE. Any bare wire earth conductors must be
sleeved with green/yellow sleeving.
The neutral terminals (N) are electrically connected and
are not switched.
All switch outputs (A1,A2 and A3) are 230/240V~
closers. If potential-free contacts are needed, appropriate
accessories are required.
Solarflo - Solar Thermal Domestic Hot Water System20
PE Earthed wire WMM Flow transmitter
L Mains supply live conductor T1 Temp.- sensor collector 1
N Mains supply neutral conductor T2 Temp.- storage tank 1
A1 Switch output to solar pump T3 Temp.- sensor collector 2/
N Neutral wire to solar pump storage tank 2
A2 Live switch output 2 T4 Temp.- sensor collector
N Neutral wire switch output 2 return
A3 Live switch output 3 T5 Temp.- sensor thermostat
N Neutral wire switch output 3 or for 2nd temperature
differential controller
T6 Temp.- sensor antifreeze
For switch functions A2 and A3 or for 2nd temperature
see Fig. 23 differential controller
Fig. 21
230V/240V~
Mains supply
L
N
E
Solar
differential
controller
Hydraulic Station
Double pole
isolating switch
Solar coil
over-temp
cut-out
Fig. 22