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The fan is switched off by the sub-limit
thermostat. The boiler temperature has
decreased under 50
o
C.
Set another temperature level for
switching the fan off – see the service
settings.
In the event of a failure of the
thermostat or the switch, the
replacement must be carried out
by a professional service company!
The fan is switched off by the limit switch
of the chimney dumper.
The stroke of the limit switch must
adjusted or the faulty limit switch must be
replaced – must be carried out by a
professional servicing company!
The fan is switched off by the safety
thermostat.
The boiler is overheated – the boiler
temperature exceeds 95
o
C.
The heating system must be cooled down
to under approx. 75
o
C. The fan will then
go automatically back on.
Unless the fan goes back on despite the
boiler temperature decreasing under 65°,
the safety thermostat has failed-must be
replaced by a professional servicing
company!
9 Controller configuration
Basic
The controller maintains the boiler output temperature in keeping with the user defined fixed temperature value.
Equithermal
The controller must be equipped with an outdoor temperature sensor. The controller will calculate the required boiler output water
temperature based on an equithermal curve and the outdoor temperature. The equithermal curve must be set experimentally
for each type of the site to be heated up. Given its appropriate setting, the site will be heated up optimally despite any fluctuations
in
the
temperatures
outside.
The
user
selects
the
heel
point
(ideally
at
temperatures
of
0°C),
with the temperature outside going below zero (approx. -10 to -5°C), the slope must be set.
Controlled steering
Allows steering by a superior system using a 0-10V signal. This
principally involves equithermal control where the outside temperature is
simulated using the given external signal. 0V= +20°C, 10V= -20°C.
9.1 Commissioning
Having reviewed all electric parts, check the heating circuit with an emphasis on the proper setting of the valves. Make sure
the heating circuit contains an expansion vessel and there is water in the heating circuit at the appropriate pressure value. Check
