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5797 340 - 01
Vitoflex 300-RF Installation & Operating
Parameters
“Settings” tab
Flue Gas Fan
Parameters
Description
Setting in
Setting
range
Default
value
“Start speed, flue
gas fan”
Speed of the flue gas fan when the system is switched on
%
“Minimum
speed, flue
gas fan” to
“Maximum
speed, flue
gas fan”
50
“Minimum speed,
flue gas fan”
Minimum speed of flue gas fan
%
25 to
“Maximum
speed, flue
gas fan” -1
30
“Maximum speed,
flue gas fan”
Maximum speed of flue gas fan
%
“Minimum
speed, flue
gas fan”
+1 to 100
100
“Flue gas
temperature,
burnout – OFF”
A low flue gas temperature is a clear sign that there are
no embers left in the combustion chamber. If the flue gas
temperature drops below this value, the controller switches
from the “Burnout” operating state to “Off” or “Standby
ON - OFF”.
(°F)
°C
(122 to 302)
50 to 150
(194)
90
“Delay, burnout –
OFF”
Delay before changeover of operating state when
“Flue gas temperature, burnout - OFF” is reached
minutes
2 to 60
10
“Flue gas
temperature limit”
If the flue gas temperature rises above this value,
the speed of the flue gas fan is reduced down to the
“Minimum speed, flue gas fan” parameter.
(°F)
°C
(302 to 482)
150 to 250
(392)
200
“Flue gas
temperature,
heat-up – operation”
If the flue gas temperature reaches the set value,
the controller switches from the “Heat up” operating
state to “Load”.
(°F)
°C
(176 to 266)
80 to 130
(194)
90