EngA DJM3 - Controller Description; Terminals

A DJM3
IOM-17 6 of 27 Mar 99 R3
CONTROLLERDESCRIPTION

TERMINALS
TABLE1
Terminal Description
T1 Boardpowersupply.(HOT)24Vacisolated.
T2 Boardpowersupply.(NEUTRAL)24Vacisolated.
FS Fanswitch(orDaymode)enableinput(24Vac).
K Night(unoccupied)modeenableinput(24Vac).
HS Heatenableinput(24Vac).
N Grounded24Vacneutral(referencetoFS,K,HS).
DM1,DM2 Dampermotoroutputcontacts(dry).
FR,CFR Flamerelayoutputcontacts(dry).
AL Alarmoutput.
C Contactcommoninputpower(toALandSA).
SA Supplyairfanenableoutput.
CB1 Combustionblowermotorinput.
CB2 Combustionblowermotorspeedcontroloutput.
PV1,PV2 Pilotvalvedisablecontact(dry).
VFB120 Maingasvalvefeedback(SSOV)hotinputfor120Vvalves.
VFB24 Maingasvalvefeedback(SSOV)hotinputfor24Vvalves.
VN Maingasvalvefeedback(SSOV)neutralinput.
MX1,MX2 Modulatingvalveoutput.(DCvolts)
VS Legacyinput.Notused.
OS,GS,YS Combustionblowerspeedsensorinput.
Q,U Dischargeairtemperaturesensorinput.
SSPM Internal(jumpered)orexternaldischargesetpointinputs.
VXYZ Modulating(resistive)room/returnairthermostatinputs.
OR Singlestageheatthermostatinput.
+/‐ 0‐10Vdc(4‐20mA)temperatureresetinput.

