Tech Controllers ST-976 - Damping Parameters; Internal Feeder Coefficient; Exhaust Fan

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4.4.3 Dampingparameters
FITTER'S
MENU
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DAMPING
PARAMETERS
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Fuelburnouttime
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Dampingprotection
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Fandampinggear
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Dampingparametersconcerncontrollersettingsindampingmode. 
Fuelburnouttime
Thisparameterdefinesthedurationtimeofthelastdampingphase.Inthisphasethefanoperatesat
maximumspeed.Theaimofthisphaseistocleanthefurnace.
Dampingprotection
Thisparameterdefinesthedurationtimeofthefirstdampingphase.Inthisphasethefeederisdisabledand
thefanoperatesatauser‐definedspeed.Theaimofthisphaseistoburntheremainingfuel.
Fandampinggear
Thisfunctionisusedtoconfiguretheblowforceofthefansforthefirstdampingphase.
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4.4.4 Internalfeedercoefficient
Thisvaluedefineshowmuchlonger(%)theinternalfanwilloperateincomparisontotheexternalfan.
4.4.5 Exhaustfan
FITTER'S
MENU 
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EXHAUSTFAN
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Fanworkingminimum
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Fanworkingmaximum
NOTE
ThecontrollermayoptionallybeequippedwithanadditionalmoduleSWW‐1usingRS
communication.
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Theaimoftheadditionaldeviceistoimprovethechimneydraught.Thedeviceiscontrolledbytheadditional
moduleSWW‐1usingRScommunication.Itadjustsitsrotationalspeedtotheburnerpower.Thefanoperates
inallCHboileroperationmodes,i.e.Fire‐up,OperationandDamping.
Fanworkingminimum
Theminimumexhaustfanspeedfortheminimumburnerpower.
Fanworkingmaximum
Themaximumexhaustfanspeedforthemaximumburnerpower.
NOTE
TheworkingrangeofMaximummaynotbelowerthantheMinimum.Oncethemodulehasbeen
connected,therangeupdatemaytakeafewminutes.