Weil-McLain 550-110-260/02002 manual Boiler relief valve, Lever must be operated AT Least

Page 39

Boiler Manual

❏Check/test . . . . . . . discharge line have not been altered or tampered with illegally. Certain naturally occurring conditions may

 

corrode the valve or its components over time,

circulation of air-saturated tank water back to

rendering the valve inoperative. Such conditions are

the system and prevents the air from bubbling

not detectable unless the valve and its components are

up through the water as it returns from the

physically removed and inspected. This inspection must

system.

only be conducted by a plumbing contractor or

• Do not use automatic air vents in systems

authorized inspection agency — not by the owner.

with closed-type tanks. The air will escape

Failure to reinspect the boiler relief valve as directed

from the system instead of returning to the

could result in unsafe pressure buildup, which can

tank. Eventually, the tank will waterlog and no

result in severe personal injury, death or substantial

longer control pressurization. The boiler relief

property damage.

valve will weep frequently.

 

Following installation, the valve

Diaphragm- or bladder-type — welded gas tight

 

 

lever must be operated AT LEAST

with a rubber membrane to separate the tank

 

ONCE A YEAR to ensure that waterways are clear.

pressurizing air and the water. May be located at

Certain naturally occurring mineral deposits may

any point in the system, but most often found near

adhere to the valve, rendering it inoperative. When

the boiler.

manually operating the lever, water will discharge and

• Systems with this type of expansion tank

precautions must be taken to avoid contact with hot

require at least one automatic air vent,

water and to avoid water damage. Before operating

preferably located on top of an air eliminator,

lever, check to see that a discharge line is connected to

as shown in examples in manual section 3.

this valve directing the flow of hot water from the valve

2. If relief valve has tended to weep frequently, the

to a proper place of disposal otherwise severe personal

expansion tank may be waterlogged or undersized.

injury may result. If no water flows, valve is inoperative.

Closed-type tank — tank is most likely

Shut down boiler until a new relief valve has been

installed.

waterlogged. Install a tank fitting if not already

 

 

 

installed. Then check fill level per fitting

2. After following the above warning directions, if the

manufacturer’s instructions. If fill level is correct,

relief valve weeps or will not seat properly, replace

check tank size against manufacturer’s instructions.

the relief valve. Ensure that the reason for relief valve

Replace with a larger tank if necessary.

weeping is the valve and not over-pressurization

Diaphragm- or bladder-type — first, check tank

of the system due to expansion tank waterlogging

or undersizing.

size to be sure it is large enough for the system. If

 

 

 

size is too small, add additional tank(s) as necessary

 

 

 

to provide sufficient expansion. If tank size is large

 

 

 

enough, remove tank from system and check charge

 

 

 

Figure 23 Relief valve, typical

pressure (usually 12 psig for residential

 

 

 

applications). If tank won’t hold pressure,

 

 

 

membrane has been damaged. Replace tank.

 

 

 

Boiler relief valve

1.Inspect the relief valve and lift the lever to verify flow as in the following warnings, excerpted from a relief valve manufacturer’s warning label. Before operating any relief valve, ensure that it is piped with its discharge in a safe area to avoid severe scald potential. Read manual section 3a before proceeding further.

Safety relief valves should be

reinspected AT LEAST ONCE

EVERY THREE YEARS, by a licensed plumbing contractor or authorized inspection agency, to ensure that the product has not been affected by corrosive water conditions and to ensure that the valve and

 

26032

Part number 550-110-260/0200

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Contents Page ① Control module How it worksPage Contents Installer Please read before proceedingUser 1a Prepare boiler location codes & checklist Residential garage installation 1b Prepare boiler location clearancesFlooring and foundation Removing from existing vent 1c Prepare boiler location vent systemAir contamination 1d Prepare boiler location contaminationCGs combustion air options 1e Prepare boiler location air openingsSizing air openings for CGs installations Inspect orifices and burners 2a Prepare boiler placement & setupOrifice replacement procedure Place boiler/crate near positionFill and pressure test 2b Prepare boiler pressure testPerform hydrostatic pressure test Prepare boiler for test3a Water piping general information Closed-type expansion tank Figure 3b Water piping single-zone systemExpansion tank Diaphragm-type or bladder-type expansion tank FigureConverted gravity or steam systems 3c Water piping multiple zonesTypical piping multiple-zone installations 3d Water piping low temp systems Temperature gauges Valve adjustmentFor radiant heating or converted gravity systems Primary/secondary preferred bypass piping3e Water piping low temp systems Boiler-bypass alternate piping 3f Water piping low temp systems 3f system-bypass alternate piping 3g Water piping refrigeration systemPrevent chilled water from entering boiler Connecting gas supply piping to boiler Venting and combustion airGas piping Length Natural GasJunction Box furnished Field wiringWiring connections ThermostatCheck for gas leaks Freeze protection when used7a Start-up preparation Determine if water treatment is needed7b Start-up operate boiler 7a Start-up preparation7c Start-up if boiler doesn’t start Check burner flamesCheck for Installation and service certificate Check-out procedure checklistRaise room thermostat to call for heat 9a Operation sequenceSchematic wiring diagram 9b Operation wiring diagramsService 9c Operation lighting instructions For Your Safety Read Before OperatingService technician 10a Service and maintenance schedule10b Service & maintenance annual start-up Inducer motor Burners, base and inlet air boxBoiler heating surfaces Condensate drain system10b Service & maint. annual start-up Lever must be operated AT Least Boiler relief valveReview with owner Before troubleshooting 11a Troubleshooting procedureCheck pressure switch setting 11b Troubleshooting air pressure switchControl indicator lights lockout modes 11c Troubleshooting 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 Turn OFF Power to boiler at service switch or breaker Does blower motor operate? Verify Sequence of operation, , 12a Replacement parts Page Page Page Page Page Dimensional drawing 13a DimensionsDOE 13b RatingsRemoval of Combustion Chamber Lining or Base Panels Handling ceramic fiber and fiberglass materials

550-110-260/02002 specifications

Weil-McLain is a well-known manufacturer of high-quality heating systems and boiler solutions, and the 550-110-260/02002 model is a testament to the company's commitment to innovation and performance. This particular boiler is designed for commercial and residential applications, providing exceptional heating efficiency and reliability.

One of the standout features of the Weil-McLain 550-110-260/02002 is its robust construction. Built using durable materials, this boiler is engineered to withstand demanding environments while maintaining optimal performance. The unit boasts a high thermal efficiency rating, which translates to lower energy costs and reduced environmental impact. The advanced design ensures that fuel consumption is minimized while delivering consistent heat output.

The Weil-McLain 550-110-260/02002 utilizes a multi-stage burner that enhances combustion efficiency. This feature not only reduces emissions but also improves overall energy use, making it an environmentally friendly choice. The sophisticated control system allows for precise modulation of the burner, ensuring that the boiler operates at peak efficiency under various load conditions.

The boiler is equipped with a user-friendly digital control interface, providing operators with real-time monitoring and diagnostics. This allows for easy adjustments and troubleshooting, which helps to reduce maintenance downtime. The integrated safety features enhance the operational reliability of the unit, ensuring safe operation in any environment.

Another important characteristic of the Weil-McLain 550-110-260/02002 is its adaptability. It can be configured to work with various types of fuel including natural gas and propane, giving users the flexibility to choose the most cost-effective energy source. This versatility also helps to extend the lifespan of the boiler as it can be easily adapted to changing energy needs.

In conclusion, the Weil-McLain 550-110-260/02002 is a high-performance boiler that combines durability, efficiency, and advanced technology. With its robust construction, efficient burner system, and user-friendly controls, it stands out as a reliable heating solution for both commercial and residential applications. The commitment to quality and innovation makes this model a preferred choice for those seeking dependable heating systems. Whether for new installations or replacements, the Weil-McLain 550-110-260/02002 delivers exceptional performance and value.
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