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5. Ventilator after-running time setting
The required ventilator after-running time
is set by means of
pushbutton
7
. On display there appears the data like
VE 60
and it means
the required ventilator after-running time
of
60
s. The value can be
changed by pressing the pushbutton
*
and entering a new digit
combination like
70
. Then
VE
70
is alight on display. The decision
correctness must be confirmed by pushbutton
*
. Confirmation
o.k.
must
appear on display
.
The required outlet water temperature can be set between
5 and 90
seconds. The
recommended value is
50
s.
6. Regulator error conditions
During the operation there might appear the outlet water temperature sensor failure. This will be indicated
on display by blinking
Er
inscription and the regulator is in inhibition status. There only runs two-minutes
stoking after the inhibition time passed over.
On the display there is blinking
Er
inscription – heating water temperature measuring is outside the
measured range (0 °C - 99 °C).
Possible reasons:- temperature sensor damage
- sensor conductor interruption
- temperature –frequency converter faulty
Al these failures can only be eliminated by a special contracting service worker.
Note.: During the boiler commissioning process and after the regulator has been switched on or occasionally
already during the boiler automatic operation there flickers on display the message Er, but this means
that the converter gets setting and within several minutes this message is replaced by the measured
temperature.
7. Choke valve
The volume of dosed combustion air can be
regulated at MONEX regulator by a choke valve on
ventilator. This volume depends on the fuel quality.
Generally it applies: the higher the heating power
(depending on the sort of fuel, granularity, moisture,
quality etc.), the smaller the need of supplied air.
After adjustment of combustion air to tighten the
screw so that would not be spontaneously
unscrewed. There is the strangling flap of the fan on
picture nr. 18. 100% opening of strangling flap
answers to adjustment of top shade’s arrow on
picture nr. 10.
The optimal air supply regulation is that one
depending on flue gases temperature. Under the
common operation (the boiler isn’t enormously
clogged with fly ash and tar) at the nominal output of
5 sectional size (24 kW) the flue gases temperature
should not exceed the limit 170 °C, at the nominal
output of 10 sectional size (42 kW) this limit is
142 °C. If it is the other way round it is necessary to
choke the supplied air volume.
Fig nr. 18 Strangling flap of the fan
50 % opening
100 % opening
