Weil-McLain 550-110-260/0107 manual Gold CGs

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GOLD CGs

Gas-Fired Water Boilers

Boiler Manual	• Installation • Maintenance
	• Startup • Parts

This manual must only be used by a qualified heating installer/service technician. Before installing, read all instructions, including this manual, the burner manual and any related supplements. Perform steps in the order given. Failure to comply could result in severe personal injury, death or substantial property damage.

DO NOT USE BOILER DURING CONSTRUCTION unless you provide dust-free air to the boiler area or follow the requirements given on page 9. Failure to comply could result in severe personal injury, death or sub- stantial property damage.

Part No. 550-110-260/0107

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Contents Gold CGs How it works Gold CGs Gas-Fired Induced-Draft Water Boiler Contents Please read before proceeding InstallerUser Installations must follow these codes 1a Prepare boiler location codes & checklistBefore locating the boiler, check the following 1b Prepare boiler location clearances 1c Prepare boiler location vent system When removing boiler from an existing common vent systemCGs special vent system Vent systemProducts to avoid 1d Prepare boiler location contaminationCombustion air options 1e Prepare boiler location air openingsSpecial considerations Sizing air openingsSizing air openings for CGs installations Orifice replacement procedure 2a Prepare boiler placement & setupPlace boiler/crate near position Inspect orifices and burnersHydrostatic pressure test 2b Prepare boiler pressure testDrain and remove fittings Prepare boiler for test3a Water piping general information 3b Water piping single-zone system Piping multiple zones Piping for radiant heating 3c Water piping multiple zonesSystems or converted gravity SystemsReturn water 130F or higher Valve adjustment Figures 8 and 9 only Temperature gauges3d Piping low temp systems Primary/secondary preferred bypass piping methodPrimary/secondary piping BOILER-bypass piping method Valve adjustmentFigures 8 SYSTEM-bypass piping method Prevent chilled water from entering 3e Water piping refrigeration systemsVenting and combustion air Gas piping Connecting gas supply piping to boilerNatural Gas Propane GasElectrical installation must comply with Field wiringWiring connections Thermostat7a Start-up preparation Freeze protection when usedCheck for gas leaks Verify water chemistryInspect system water piping Inspect base insulation 7b Start-up operate boilerFinal check before starting boiler Start the boilerCheck burner flames 7c Start-up if boiler doesn’t startCheck for Pilot burner flame FigureInstallation and service certificate Check-out procedure checklist9a Operation sequence Schematic wiring diagram 9b Operation wiring diagramsLadder wiring diagram 9c Operating instructions CGs-3 to CGs-6 9c Operating instructions CGs-3 to CGs-6 9c Operating instructions CGs-3 to CGi-6 Verify Proper Operation After Servicing 10a Service and maintenance schedule10b Service & maintenance annual start-up Condensate drain system Burners, base and inlet air boxInducer motor Oiled-bearing circulators10b Service & maint. annual start-up Relief valve, typical Boiler relief valveReview with owner Cleaning boiler heating surfacesBefore troubleshooting 11a Troubleshooting procedureCheck the following Air pressure switch 11b Troubleshooting air pressure switchCheck pressure switch setting Troubleshooting air pressure readingControl indicator lights Lockout modes 11c Troubleshooting control moduleControl indicator lights NON-LOCKOUT modes Troubleshooting the control moduleControl module connections Chart 1 Troubleshooting Power light status 11d Troubleshooting control module lightsChart 2 Tstat Circ & Power lights flashing Chart 3 Press Switch & Power lights flashing Chart 4 Flame & Power lights flashing Item 8 , Does blower motor operate? Verify Sequence of operation, , Section assembly Base Jacket Trim Controls 12a Replacement partsSection assembly 12b Replacement parts section assemblyBase assembly 12c Replacement parts baseDescription Weil-McLain Part number Jacket assembly 12d Replacement parts jacketBoiler Model Weil-McLain part number Part number 12e Replacement parts trimPropane gas components 12f Replacement parts controlsDimensional drawing 13a DimensionsDOE 13b RatingsRemoval of Combustion Chamber Lining or Base Panels Handling ceramic fiber and fiberglass materials