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Weil-McLain 550-110-260/02002 9b Operation — wiring diagrams, GOLD CGs Gas-FiredWater Boiler

Models: 550-110-260/02002

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GOLD CGs Gas-Fired Water Boiler

9b Operation — wiring diagrams

Figure 19 Schematic wiring diagram

32	Part number 550-110-260/0200

Page 32

Image 32

Weil-McLain 550-110-260/02002 9b Operation — wiring diagrams, GOLD CGs Gas-FiredWater Boiler, Schematic wiring diagram

Contents

Page How it works GOLD CGs Gas-FiredWater BoilerPage Contents 12. Replacement parts6–11 3. Water pipingInstaller Please read before proceedingBoiler Manual User1a Prepare boiler location — codes & checklist Installations must follow these codesGOLD CGs Gas-FiredWater Boiler Before locating the boiler, check the followingResidential garage installation 1b Prepare boiler location — clearancesFlooring and foundation Provide the following clearances1c Prepare boiler location — vent system Removing from existing ventCGs special vent system GOLD CGs Gas-FiredWater Boiler1d Prepare boiler location — contamination Air contaminationBoiler Manual Table 1 Corrosive contaminants1e Prepare boiler location — air openings CGs combustion air optionsSizing air openings Special considerationsDirect exhaust vent installation Direct vent installationBoiler Manual Room Air Openings2a Prepare boiler — placement & setup Orifice replacement procedurePlace boiler/crate near position Inspect orifices and burners2b Prepare boiler — pressure test Perform hydrostatic pressure testBoiler Manual Prepare boiler for testPressure/temperature gauge 3a Water piping — general informationGeneral piping information Circulator3b Water piping — single-zonesystem Expansion tankBoiler Manual Closed-typeexpansion tank - Figure3c Water piping — multiple zones Zoning with zone valves, return temp over 130 FZoning with circulators, return temp over 130 F GOLD CGs Gas-FiredWater Boilertypical piping — multiple-zoneinstallations Boiler ManualZoning with circulators — return water 130 F or higherTemperature gauges Valve adjustment 3d Water piping — low temp systemsPrimary/secondary preferred bypass piping method GOLD CGs Gas-FiredWater Boilerprimary/secondary preferred bypass piping for radiant heating or converted gravity systemsBoiler Manual Figure3e Water piping - low temp systems Temperature gauges Valve adjustmentGOLD CGs Gas-FiredWater Boiler Boiler-bypasspiping methodboiler-bypassalternate piping — Boiler Manualfor radiant heating or converted gravity systems Figure 10 Boiler-bypasspipingValve adjustment 3f Water piping - low temp systemsGOLD CGs Gas-FiredWater Boiler System-bypasspiping method3f system-bypassalternate piping — 3g Water piping — refrigeration systemfor converted gravity or steam systems Prevent chilled water from entering boilerConnecting gas supply piping to boiler 4Venting and combustion air5Gas piping GOLD CGs Gas-FiredWater BoilerNatural Gas 5 Gas piping continuedBoiler Manual 6Field wiring Wiring connectionsElectrical installation must comply with GOLD CGs Gas-FiredWater Boiler7a Start-up— preparation Determine if water treatment is neededCheck for gas leaks Fill the system with water7a Start-up— preparation continued 7b Start-up- operate boilerInspect system water piping Final check before starting boiler7b Start-up— operate boiler continued 7c Start-up— if boiler doesn’t startCheck burner flames Check forGOLD CGs Gas-FiredWater Boiler 8Check-outprocedure — checklistInstallation and service certificate 9a Operation — sequence Boiler ManualGOLD CGs Gas-FiredWater Boiler 9b Operation — wiring diagramsFigure 19 Schematic wiring diagram Legend for ladder wiring diagram G PowerR Press switch Boiler ManualFOR YOUR SAFETY READ BEFORE OPERATING 9c Operation - lighting instructionsOPERATING INSTRUCTIONS TO TURN OFF GAS TO THE APPLIANCE10a Service and maintenance — schedule Service technicianOwner maintenance Table 5 Service and maintenance schedules10b Service & maintenance — annual start-up InspectReported problems GOLD CGs Gas-FiredWater BoilerService InspectBoiler Manual Burners, base and inlet air box10b Service & maint. — annual start-up continued Start-upCheck/test GOLD CGs Gas-FiredWater BoilerBoiler Manual Boiler relief valvelever must be operated AT LEAST Figure 23 Relief valve, typical10b Service & maint. - annual start-up Cleaning boiler heating surfacesReview with owner GOLD CGs Gas-FiredWater Boiler11a Troubleshooting — procedure Before troubleshootingCheck the following VERIFY PROPER OPERATION AFTER SERVICING11b Troubleshooting — air pressure switch Check pressure switch settingTroubleshooting air pressure reading Table 6 Pressure switch setpoint11c Troubleshooting — control module Control indicator lights — lockout modesControl indicator lights — non-lockoutmodes Troubleshooting the control module11c Troubleshooting — control module continued GOLD CGs Gas-FiredWater BoilerFigure 25 Control module connections 120 VAC IN11d Troubleshooting — control module lights CHART 1 — Troubleshooting POWER light statusIs POWER light off? Is POWER light11d Troubleshooting — control module lights CHART 2 — TSTAT CIRC & POWER lights flashingDo the TSTAT and POWER lights still flash? GOLD CGs Gas-FiredWater Boilercontinued CHART 3 — PRESS SWITCH & POWER lights flashingIs PRESS SWITCH light flashing? Does the ohmmeter indicate the switch is closed?11d Troubleshooting — control module lights Do FLAME and POWER lights still flash?Are FLAME & POWER lights flashing? Are FLAME and POWER lights flashing?Natural gas — 5.0 w.c. min/14.0 w.c. max Boiler Manualcontinued 11d Troubleshooting — control module lights Does the ohmmeter indicate the switch is closed?Is PRESS SWITCH light flashing? GOLD CGs Gas-FiredWater BoilerDoes voltmeter show 120 VAC across pins? Are limit switch contacts closed?Boiler Manual continued12a Replacement parts Section assemblyBase assembly Jacket assemblyPage Page Page Page Page GOLD CGs Gas-FiredWater Boiler 13a DimensionsFigure 31 Dimensional drawing 13b Ratings Boiler ManualTable Boiler ratingsWeil-McLain 500 Blaine Street Michigan City, IN Handling ceramic fiber and fiberglass materialsGOLD CGs Gas-FiredWater Boiler — Boiler Manual