Sigma Holzgas, Руководство и установка

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Boiler overheating temperature [A 99] - value, exceeding which causes
permanent turn off of the fan to prevent boiler overheating. After the
temperature increases above 80
˚ C the central heating pump is turned on to cool
down the boiler. Overheating mode is shown by indicating error [E 2] on the
display. It can be turned off by pressing STOP button, but only when
temperature decreases below this temperature.
Fan turn off also occurs in case of damage of the boiler temperature sensor
which is shown on the display with error [E 1].
STB - the controller has additional protection against overheating which is
independent from the processor. In case the temperature increases over 95°C,
the control process is turned off by turning the fan off and launching the central
heating pump. The fan and the pump are turned on to the control process again
when temperature drops below 89°C.
STB circuit enables more precise boiler work control and reduces overheating
possibility.
(6) No fuel
No-fuel testing time during fuel firing start [Fd60] - after switching to WORK
mode, if water temperature does not increase by 5°C in programmed time, the
control process will be turned off and the display will show the message:
[FUEL].
You can return to previous mode by pressing STOP button. No fuel testing time
during fuel firing is finished after the set temperature is achieved.
No-fuel testing time during work mode [Fb30] - in WORK mode, if temperature
of water in the boiler decreases below temperature set with the thermostat, by
hysteresis value, and does not increase by 5°C in the programmed time, the
control process will be turned off and the display will show the message:
[FUEL].
You can cancel the alarm by pressing STOP button.
(7) Additional output
Additional output [Ar 0] – the controller has been equipped with an output that
allows connection of the UM module. When the Ar parameter has the UM
module value “0” it may control the oil or gas boiler – if such boiler exists in the
heating circuit. After switching the controller with the main power switch the
additional boiler is turned off and it turns on again when there is no fuel in the
solid fuel boiler. This function is useful in heating systems where there is a solid
fuel boiler used to cut the heating costs. After erasing the “no fuel” alarm by
pressing STOP button the additional boiler is again turned off and the controller
works again. Setting parameter [Ar] to “1” allows controlling the additional alarm
signaling system with the UM module – which occurs on the controller.
When Ar parameter is set to “2” the UM module allows controlling the mixing
valve servo-motor in the central heating circuit depending on the room
thermostat input. In this case the work of central heating pump depends only on
the boiler temperature.