EN-SUNGO-SL_BA-0809-1122P300
5
Installation in the Solar Circulation Unit
●
With the screws mount the SUNGO SL on the wall holder
of the solar circulation unit.
●
Break out the cable feeds which are located on the base
housing next to the crosspiece.
●
Strip the 230 V cables in a way that the insulated single
cables start directly at the feed to the base housing.
●
Hold cable clamps steady when screwing tight in order
to minimise pressure on the circuit board. There is a dan-
ger of the terminals to be torn off!
●
Finally connect to mains power.
●
When the control is switched on the voltage on the triacs
housing is 230 V AC.
3.2 Connecting Wires
Layout of the SUNGO SL Connections
All electrical connections are made to the circuit board at
the bottom of the control. The sensor connections (safety
low voltage) are located on the right hand side and the 230
V mains connections and the switching outputs A1 and A2
on the left hand side.
General connection rules
●
If flexible wires are used and the control is wall mounted,
a strain relief must be fixed within or outside of the con-
trol.
●
In this case you must crimp the wire ends.
●
If required PG9 screws can be fixed at the feed-throughs
in case of wall mounting.
230 V mains connection
●
Mains power is connected from outside the control via
an ON/OFF Switch.
This switch is not required if mains power is with a pro-
tective plug to a socket.
●
The control is suitable for mains operation at approx.
230 V/50 Hz.
●
All earth wires are connected to the PE terminals.
●
The neutral terminals (N) are connected electrically.
●
Switching output A1 is a 230 V normally open contact
which is activated via speed-control. Switching output
A2 is purely a normally open contact.
Connecting the temperature sensors
●
The wires of the temperature sensors can be extended:
Up to 15 m length, 2 x 0.5 mm² cable can be used, be-
yond 15 m and up to 50 m 2 x 0.75 mm² is necessary.
Shielded cables should be used for long connections to
the collector.
Do not connect the shielding at the sensor end, just trim
and isolate.
●
The polarity of the temperature sensors is irrelevant and
they can be connected either way.
●
The sensor wires must be installed separately from 230 V
mains cables.
Lightning Protector Module
The SUNGO SL is fitted with spike protection on all sensor
terminals. Generally, further protection of the tank sensors
is not required.
Sensor T1 (collector) should be fitted with the sensor con-
nection box SP2 with an overvoltage protection.
FUSE
5X20
T1 T2 T3 T4 T5
M
M M M
PE-PE
A2 A1 L1
PE-PE
N N N
M
ControllerIC
Triac
Plug for Display
Trafo
Potential Earth
Switching output
Solar circuit pump
Mains L1
Collector sensor, T1
Tank sensor, bottom, T2
Tank sensor, top /
Additional thermostat sensor /
return flow boost (source)
Thermostat /
return flow boost (sink), T4
Heat meter (yield), return flow sensor, T5
T7
M
“Volume flow meter” for yield measurement, T7
Figure 2 SUNGO SL circuit board components.
