EN-SUNGO-SL_BA-0809-1122P300
3
Vacuum Tube Collector Function
The vacuum tube collector function allows operation of the
solar heating system even if sensor T1 (collector) is in-
stalled in the connecting pipe of the collector. If the tem-
perature increase at sensor T1 exceeds the preset switch-
ing on value for the collector temperature increase
(standard: 1 K) the solar circuit pump is switched on for the
duration of a preset lag time (standard: 15 s).
During this time the switching on difference and the solar
charge between sensor T1 (collector) and sensor T 2 (tank,
bottom) has to be activated, otherwise the solar circuit
pump will switch off again.
The rise in temperature at sensor T1 (collector) is measured
again immediately after the last runtime of the pump.
System Messages
The system messages for interrupted or shorted-out sen-
sors are represented by symbols on the display. For better
recognition of the system messages the display illumina-
tion switches on and off every second as long as the error
prevails and no key entry is made.
Triac
The Triac is an electronic on/off switch for the 230 V outputs
of the SUNGO Controller.
Function: A triac switch consists of 2 diodes which can be
switched anti-parallel (= antiparallel thyristors). The
thyristors switch through the positive or negative sine half-
wave as long as a switching on difference exists. The triac
switch switches off when the temperature falls below the
switching-off difference.
System Protection
In order to protect the system components (solar circuit
pump, 2 or 3 way valves etc.) in the solar heating circuit
from extremely high temperatures the solar charge is
stopped completely if a temperature limit at the collector
sensor is exceeded, even if this was permitted on account
of a temperature difference between sensor T1 (collector)
and sensor T2 (tank, bottom).
The standard temperature value for activating the system
protection function is 135 °C. However, this value can be
variably set within a range of 115° to 200 °C.
Dual Tank Operation
The SUNGO SL is capable of controlling a dual tank system
by using output A2 for switching between tanks with the
help of a 3 way valve. Change the menu item 0 – 1 to 0 – 2 in
order to control a dual tank system.
Note: If the dual tank option is selected menu item 10 can
no longer be activated.
Preference
The SUNGO SL always uses tank 1 as a preference for the
dual tank option. This cannot be changed.
Thermostat
The thermostat function for switching on can be set at a
range between 0° to 130 °C with a variable difference be-
tween 1 to 40 K for switching off. Choose between the op-
tions heating and cooling.
With the heating option activated output A2 switches on if
the current temperature T4 falls below the preset switching
on level. Output A2 switches off if the current temperature
T4 is higher than the switch-on level plus the switch-off dif-
ference.
With the heating option an additional sensor T3 can be ac-
tivated. If this is the case A2 is only switched on if tempera-
ture T3 is higher than the switching on level plus the switch-
ing off difference plus the additional difference for T3.
With the cooling option activated output A2 switches on if
the current temperature T4 falls below the preset switch
level. Output A2 switches off if the current temperature T4
is lower than the switch level minus the switching off
difference.
There are 3 independent time windows available for the
thermostat. If no time window is activated time window 1
has to be set to 0:00 and 23:59.
Return Flow Boost
This is a freely adjustable temperature difference for simple
heating support which leads the heating return-flow T4
(drain) to the heating boiler, either directly or via the solar
tank, depending on the preset temperature difference to
the tank sensor T3 (source) , by switching the 3 way valve on
output A2.
Note: In addition to the switching phase (black) on output
A2, the switching head also requires a constant phase
(brown).
SECUSOL Function
The solar heating system is operated on a drain back princi-
ple. This means if the solar circuit pump is not activated
there is no solar fluid in the collectors and risers. See
SECUSOL instructions for further details.
Measuring the Yield
For measurements of the solar yield in kWh. The heat yield
is measured with a volume flow metre connected to input
T7, an additional sensor T5 (return) and the existing sensor
T1 (collector).
