Weil-McLain EGH-125, EGH-105 manual Control Supplement

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EGHGas-Fired Boiler

Control Supplement

EGH-105 to EGH-125 Series 4 Natural gas‡

CSD-1 control system

‡For propane boilers, install EGH propane conversion kit in addition to following the instructions in this Control Supplement.

Part No. 550-110-677/0299

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Contents Control Supplement Please read this page first Boiler cartons Carton guideGas train assembly InstallationVent damper assemblies Install optional vent damper if suppliedII Piping connections III Install boiler controls water boilersWater boiler connections IV Optional heaters steam boilers only III Install boiler controls steam boilersSteam boiler connections Gas piping VI WiringCall for heat VI Wiring sequence of operationWater boiler wiring Wiring water boilersSchematic Wiring Diagram Control assembly water boiler VI Wiring water boilersCSD-1 control panel Gravity return VI Wiring steamSchematic Wiring Diagram 13a Control assembly steam, gravity returnCSD-1 control panel Pumped return Schematic Wiring Diagram Control assembly steam, pumped return Terminal strip Before proceeding To place boiler in operation VII Final adjustmentsOperating instructions VII Final adjustments operating instructionsViii Check-out procedure operation Leak test procedure Viii Check-out procedure leak testVerify proper operation after servicing Viii Check-out procedure troubleshootingReplace pilot assembly TS-2 No Spark System boiler with vent damper does not work Not OK TS-3 Pilot lights Main valve will not come on from previous IX Service and maintenance Water boiler assembly Replacement parts water boilersRV20VL Water boiler replacement partsSteam boiler assembly Replacement parts steam boilersRV20VL Steam boiler replacement partsWeil-McLain Blaine Street Michigan City,