Weil-McLain 550-110-260/0508 manual Please read before proceeding, Installer, User

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GOLD CGs Gas-Fired Water Boiler — Boiler Manual

Please read before proceeding

Installer

Read all instructions before in-

stalling. Follow all instructions in proper order to prevent personal injury or death.

•Also refer to CGs Venting Supplements.

•Consider piping and installation when determining boiler location.

User

•This manual is for use only by your qualified heating installer/service technician.

•Please refer to the User’s Information Manual for your reference.

•We recommend regular service by a qualified service technician, at least annually.

•Any claims for damage or shortage in shipment must be filed immediately against the transportation company by the consignee.

The boiler contains ceramic fiber and fiberglass materials. Use care when handling these materials per instructions on page 64 of this manual. Failure to comply could result in severe personal injury.

When calling or writing about the boiler— Please have the boiler model number from the boiler rating label and the CP number from the boiler jacket. You may list the CP number in the space provided on the Installation and service certificate found on page 30.

Failure to adhere to the guidelines on this page can result in severe personal injury, death or substantial property damage.

When servicing boiler —

•To avoid electric shock, disconnect electrical supply before performing maintenance.

•To avoid severe burns, allow boiler to cool before performing maintenance.

Boiler operation —

•Do not block flow of combustion or ventilation air to boiler.

•Should overheating occur or gas supply fail to shut off, do not turn off or disconnect electrical supply to circulator. Instead, shut off the gas supply at a location external to the appliance.

•Do not use this boiler if any part has been under water. Immediately call a qualified service techni- cian to inspect the boiler and to replace any part of the control system and any gas control that has been under water.

•Continual fresh makeup water will reduce boiler life. Mineral buildup in sections reduces heat transfer, overheats cast iron, and causes section failure. Addition of oxygen and other gases can cause internal corrosion. Leaks in boiler or piping must be repaired at once to prevent makeup water.

•Do not add cold water to hot boiler. Thermal shock can cause sections to crack.

Glycol — potential fire hazard —

All glycol is flammable when exposed to high temperatures. If glycol is allowed to accumulate in or around the boiler or any other potential ignition source, a fire can develop. In order to prevent potential severe personal injury, death or substantial property damage from fire and/or structural damage:

•Never store glycol of any kind near the boiler or any potential ignition source.

Boiler water —

•Do not use petroleum-based cleaning or sealing compounds in boiler system. Water seal deterioration will occur, causing leakage between sections. This can result in substantial property damage.

•Do not use“homemade cures”or“boiler patent medi- cines”. Serious damage to boiler, personnel and/or property may result.

•Monitor and inspect the system and boiler regularly for leakage. Repair any leaks im- mediately to prevent possible accumulation of glycol.

•Never use automotive antifreeze or ethylene glycol in the system. Using these glycols can lead to hazardous leakage of glycol in the boiler system.

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 User InstallerPlease read before proceeding Before locating the boiler, check the following 1a Prepare boiler location codes & checklistInstallations must follow these codes 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 openingsSizing air openings Special considerationsSizing 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 3c Water piping multiple zones3c Water piping multiple zones Valve adjustment Figures 8 and 9 only Temperature gauges3d Piping low temp systems Primary/secondary preferred bypass piping method3d Piping low temp systems BOILER-bypass piping method Valve adjustmentFigures 8 SYSTEM-bypass piping method Boiler 3e Water piping refrigeration systemsPrevent chilled water from entering Use direct vent sealed combustion if combustion air Venting and combustion airGas 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 Oiled-bearing circulators Condensate drain system Burners, base and inlet air boxInducer motor 10b Service & maint. annual start-up Relief valve, typical Boiler relief valveReview with owner Cleaning boiler heating surfacesCheck the following 11a Troubleshooting procedureBefore troubleshooting 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 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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