Pellematicsettings
82
27.12NegativeDraft
NegativeDraftisinthePellematicmenu.
NegativeDrafthasfollowingmenuitems.
•Mode
•SetValue
•MalfunctionTime
•Minimum
•Maximum
•Washing
•PIDControllerAmplication
•PIDControllerTimeIntegral
•PIDControllerTimeDifferential
TheadditionalmenuitemsNegativeDraftarefortheÖkoFENServicetechnician.Theyarepresentafterentering
thecode:
Mode
SetValueIftheNegativeDraftfallsinthecombusionchamberundertheSetValue,thespeed
oftheuegasfanincreases.Increasesthenegativedraft,thespeedoftheuegas
fanreducesagain.Value=0,theNegativeDraftcontrolisinactive.(Displayedonly
withconnectedNegativeDraftmeasuring)
MalfunctionTimeIfthenegativepressureinthecombustionchamberisbelowlongerthantheadjusted
errortime,thesystemshowsthemalfunction„Fluegasfan???“
Minimum
IfthenegativedraftMinimuminthecombustionchamberisbelowandforlonger
than1minute,thesystemgoesintoMalfunction.Value=0theNegativeDraftcontrol
isinactive.(DisplayedonlywithconnectedNegativeDraftmeasuring)
Maximum
IfthenegativedraftMaximuminthecombustionchamberisexceededforlonger
than1minute,thesystemgoesintoMalfunction.(Displayedonlywithconnected
NegativeDraftmeasuring)
Washing
ThefunctionWashingisonlyavailableatcondensingboilersystems.Ifthe
inWashingadjustedNegativeDraftfallsbelow,thescrubbercleanstheheat
exchangerofthecondensingboiler.TheWashingoccurstotheopposedwashing
durationandthewashinginterval,thoughmaximum1xperhour.
PIDController
Amplication
P-contingentfortheregulationofthecombustionchamber(Displayedonlywith
activatednegativedraftcontrol)
PIDControllerTimeIntegralI-contingentfortheregulationofthecombustionchamber(Displayedonlywith
activatednegativedraftcontrol)
PIDControllerTime
Differential
D-contingentfortheregulationofthecombustionchamber(Displayedonlywith
activatednegativedraftcontrol)
OperatingmanualPelletronicTouch
E1389EN2.0