EngA DJM3

A DJM3
IOM-17 5 of 27 Mar 99 R3
INTRODUCTION
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TheDJM3isanindependentcontrollerforEngineeredAirDJstylegasfiredheatingequipment
designedtoprovidethemajorityofcontrolrequirements.TheDJM3modulatesavariablespeed
combustionblowerinconjunctionwithanmodulatinggasvalve.Thecombustionblowerspeedand
thegasvalveflowratearebothmodulatedtomaintaintherequireddischargeairtemperature.
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Theinformationusedinthismanualshouldbeusedinconjunctionwiththeunitfunctionsheet(s)and
theDJ(E,S)&DGorDJXseriesInstallation,Operation,andMaintenancemanuals.
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TheDJM3isdesignedtocontrolonlyEngineeredAirequipment.Variousupgradesandimprovements
havebeenmadeovertime.Alwaysincludeanysuffixlettersandnumbersfortroubleshootingand/or
replacement.
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Note:Itisnecessarythatalloftheremotewiringandcontrolsbecompleteandoperationalbefore
startingtheappliance.
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CONTROLLERRATINGS
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Powerrequirements:24Vac,40VA.
ContactRating:120V5Ainductive
0‐10Vdcinputimpedance:2k
Environment:‐40to120°F(‐40to50°C)non‐condensing.
FuseRating:1.5GDCslow‐blow
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