Weil-McLain 550-110-260/0508 manual 11a Troubleshooting procedure, Before troubleshooting

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GOLD CGs Gas-Fired Water Boiler — Boiler Manual

11a Troubleshooting — procedure

Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation.

Never jumper (bypass) rollout thermal fuse element or any other device except for momentary testing as outlined in Troubleshooting Charts. Severe personal injury, death or substantial property damage can result.

Before troubleshooting:

1.Have the following items:

a.Voltmeter that can check 120 VAC and 24 VAC.

b.Microammeter with a minimum scale range of 0-25.

c.Continuity checker.

d.U-tube manometer.

2.Check for 120 VAC (minimum 102 VAC to maximum 132 VAC) to boiler.

3.Make sure thermostat is calling for heat and contacts (including appropriate zone controls) are closed. Check for 24 VAC between thermostat wire nuts and ground.

Check the following:

1.Wire connectors to control module are securely plugged in at module and originating control.

2.Air pressure switch hoses are properly and securely plugged in and are not dam- aged.

3.Gas pressures:

a.With boiler off — 13” w.c. maximum natural or propane gas pressure up- stream of gas valve.

b.With boiler on:

•5” w.c. minimum natural gas pressure or 11” w.c. propane gas pressure upstream of gas valve.

•3 ½” w.c. minimum natural gas pressure or 10” w.c. propane gas pressure downstream of gas valve — Can be adjusted by regulator on gas valve.

Part number 550-110-260/0508

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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 Vent system When removing boiler from an existing common vent system1c Prepare boiler location vent system CGs special vent systemProducts to avoid 1d Prepare boiler location contaminationSpecial considerations 1e Prepare boiler location air openingsCombustion air options Sizing air openingsSizing air openings for CGs installations Inspect orifices and burners 2a Prepare boiler placement & setupOrifice replacement procedure Place boiler/crate near positionPrepare boiler for test 2b Prepare boiler pressure testHydrostatic pressure test Drain and remove fittings3a Water piping general information 3b Water piping single-zone system Piping multiple zones 3c Water piping multiple zones3c Water piping multiple zones Primary/secondary preferred bypass piping method Temperature gaugesValve adjustment Figures 8 and 9 only 3d Piping low temp systems3d Piping low temp systems BOILER-bypass piping method Valve adjustmentFigures 8 SYSTEM-bypass piping method Prevent chilled water from entering 3e Water piping refrigeration systemsBoiler Use direct vent sealed combustion if combustion air Venting and combustion airPropane Gas Connecting gas supply piping to boilerGas piping Natural GasThermostat Field wiringElectrical installation must comply with Wiring connectionsVerify water chemistry Freeze protection when used7a Start-up preparation Check for gas leaksStart the boiler 7b Start-up operate boilerInspect system water piping Inspect base insulation Final check before starting boilerPilot burner flame Figure 7c Start-up if boiler doesn’t startCheck burner flames Check forInstallation 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 Inducer motor Condensate drain system Burners, base and inlet air boxOiled-bearing circulators 10b Service & maint. annual start-up Relief valve, typical Boiler relief valveReview with owner Cleaning boiler heating surfacesBefore troubleshooting 11a Troubleshooting procedureCheck the following Troubleshooting air pressure reading 11b Troubleshooting air pressure switchAir pressure switch Check pressure switch settingTroubleshooting the control module 11c Troubleshooting control moduleControl indicator lights Lockout modes Control indicator lights NON-LOCKOUT modesControl 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 partsItem number Description Weil-McLain part number 12b Replacement parts section assemblyPage Description Weil-McLain Part number 12c Replacement parts baseJacket 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

550-110-260/0508 specifications

Weil-McLain is a well-known name in the heating industry, offering a wide range of high-quality boilers and heating systems. Among its impressive lineup, the Weil-McLain 550-110-260/0508 model stands out for its performance, efficiency, and advanced technologies, making it suitable for residential and commercial heating applications.

The 550-110-260/0508 boiler is designed for flexibility and performance, providing an output capacity of 110,000 BTU per hour. This makes it suitable for various heating needs, from single family homes to larger commercial spaces. One of the key features of this model is its high-efficiency design, which allows it to operate at an AFUE (Annual Fuel Utilization Efficiency) rating of up to 95%. This means that a significant portion of the fuel consumed is converted into usable heat, resulting in lower energy bills and reduced environmental impact.

A standout characteristic of the Weil-McLain 550-110-260/0508 is its durable construction. Built with high-quality materials, this boiler is designed to withstand the rigors of daily use and provide reliable service over the years. Additionally, the unit features a compact design, allowing for easy installation in various configurations, whether it be in a basement, utility room, or outdoor setting.

Another impressive technology incorporated in this model is the advanced control system, which allows for precise temperature management and improved energy efficiency. The intuitive control interface enables homeowners and facility managers to easily set and adjust heating schedules, ensuring optimal comfort while minimizing energy consumption.

Safety is also a top priority for Weil-McLain. The 550-110-260/0508 is equipped with multiple safety features, including a pressure relief valve, limit controls, and a low water cutoff, which help to ensure safe and reliable operation.

In conclusion, the Weil-McLain 550-110-260/0508 model boasts a combination of efficient heating, durable construction, advanced control technology, and safety features, making it an excellent choice for those seeking a reliable and effective heating solution. Its versatility and performance make it well-suited for a variety of applications in both residential and commercial settings.
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