Burnham MST288 Adjusting Fuel Pump Pressure, Adjust OIL Burner While OPERATING. flame present

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5.Adjust oil pressure.

a.When checking a fuel unit's operating pressure, a reliable pressure gauge may be installed in either the bleeder port or the nozzle port. See Figure

23.

b.Locate oil pressure adjusting screw and turn screw to obtain proper pump pressure, refer to Table 8 at rear of manual.

c.To check the cut-off pressure, deadhead a reliable pressure gauge onto the copper connector tube attached to the nozzle port. Run the burner for a short period of time. Shut the burner off. The pressure should drop and hold.

d.Remove the gauge and install bleeder port and/or reconnect the nozzle port line.

Figure 23: Adjusting Fuel Pump Pressure

G.ADJUST OIL BURNER WHILE OPERATING. (flame present)

1.ADJUST DRAFT REGULATOR for a draft of zero inches (water gauge) in the canopy (see Figure

18) after chimney has reached operating temperature and while burner is running. (At least five minutes) See Table 8 at rear of manual for details.

2.READJUST THE AIR BAND on burner for a light orange colored flame while the draft in the canopy is zero inches water column ("w.c.). Use a smoke tester and adjust air for minimum smoke (not to exceed #1) with a minimum of excess air. Make final check using suitable instrumentation to obtain a CO2 of 11.5 to 12.5% with draft of zero inches water column ("w.c.) (water gauge) in canopy.

These settings will assure a safe and efficient operating condition. If the flame appears stringy instead of a solid fire, try another nozzle of the same type. Flame should be solid and compact. After all adjustments are made recheck for a draft of zero inches water column ("w.c.) in the canopy. Replace plug at completion.

See Table 8 (at rear of this manual) for details regarding the overfire pressure when baffles are both installed and removed.

3.READJUST THE HEAD SETTING only if necessary.

a.MST288 & MST396:

Beckett MB(L1) Head burner has a fixed head which is non-adjustable.

b.MST513 & MST629:

Beckett MD(V1) (variable) Head burners have the ability to control air by moving the head. It might be necessary to move the head forward or back one position at a time to optimize the smoke and CO2 readings. See Figure 24.

4.TURN “OFF” BURNER and remove pressure gauge. Install gauge port/bleeder plug and tighten. Start burner again.

WARNING

Do not loosen or remove any oil line fittings while burner is operating.

5.FLAME FAILURE

The MegaSteam™ boiler controls operate the burner automatically. If for unknown reasons the burner ceases to fire and the reset button on the primary control has tripped, the burner has experienced ignition failure.

WARNING

Do not attempt to start the burner when excess oil has accumulated, when the unit is full of vapor, or when the combustion chamber is very hot.

H.CHECK FOR CLEAN CUT OFF OF BURNER.

1.AIR IN THE OIL LINE between fuel unit and nozzle will compress when burner is on and will expand when burner stops, causing oil to squirt from nozzle at low pressure as the burner slows down and causing nozzle to drip after burner stops. Usually, cycling the burner operation about 5 to 10 times will eliminate air from the oil line.

2.IF NOZZLE CONTINUES TO DRIP, repeat Paragraph H, No. 1. If this does not stop the dripping, remove cut-off valve and seat, and wipe both with a clean cloth until clean, then replace and readjust oil pressure. If dripping or after burn persist replace fuel pump.

I.TEST CONTROLS.

1.Check thermostat operation. Raise and lower thermostat setting as required to start and stop burner.

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Contents MegaSteam 100618-01R4-5/08 Price $3.00Important Information Read Carefully Page Table of Contents Page =B=R NET Section I PRE-INSTALLATION Boiler is Suitable for InstallationPage Control Carton Insulation WrapperJacket Carton Instruction/Label BagProcedure To Open, Close and Secure Burner Swing Door Jacket Front Panel InstallationBoiler Removal from Skid Page Page Baffle Usage Flueway Baffle InstallationClosing / Securing Burner Swing Door Jacket Rear Panel Installation Flue Cleanout Covers and Smokebox Collar InstallationUNC Less HeaterSide and Top Jacket Panel Installation External Electrical Enclosure MountingTrim and Controls Installation. Pressure Limit Installation Pressure Gauge and Gauge Glass InstallationFloat-Type Lwco and Pressure Limit Installation Safety Valve and Drain Valve Installation Oil Burner InstallationDo not install burner without gasket Aquastat bulb must be fully inserted into the wellOil Burner Installation Section III Steam Boiler Piping & Trim Evaluate the existing steam systemRecommended Boiler Piping for Gravity Return Steam Boiler Section IV Tankless & Indirect Water Heater Piping Schematic Tankless Water Heater Piping Tankless Heater Data Alliance Water Heater Piping with MegaSteam Boiler Section V Venting & Air intake piping Chimney ConnectorChimney Venting Recommended Vent Pipe Arrangement and Chimney Requirements Stack Temperature DraftMinimum Clearances Do not exceed maximum allowable air intake lengthSeal all external joints with weatherproof caulk Section VI Electrical GeneralWiring Diagram, Steam, Hydrolevel CG450 Probe Lwco Wiring Diagram, Steam, McDonnell & Miller PS-801 Probe Lwco Wiring Diagram, Steam, McDonnell & Miller #67 Float Lwco Boiler Sequence of Operation with Probe Lwco See Figure Boiler Sequence of Operation with Float Lwco See FigureSingle Pipe Oil Lines Single Pipe Oil LineTwo-Stage Units 3450 RPM Two Pipe Systems Two Pipe Oil LinesSingle-Stage Units 3450 RPM Two Pipe Systems Always Inspect Installation Before Starting Burner Section Viii System START-UPAdjusting Fuel Pump Pressure Adjust OIL Burner While OPERATING. flame presentPage R7184 Terminals, LED and Reset Button Cad Cell Resistance When Sensing FlameCad Cell Location Jumper must be removed after this checkAvoid Breathing Fiber Particulates and Dust Section Ix Maintenance and Service Instructions Steam BoilersPage Gallons / Month MST288 MST396 MST513 MST629 Clean the Flueways See Figure Section X Boiler CleaningClean the Combustion Chamber Page Section XI Trouble Shooting Section XII Repair Parts Bare Boiler Assembly Bare Boiler Assembly Bare Boiler Assembly 1FF Jacket Assembly Jacket Assembly MST288 Thru MST629 Steam Boilers Trim and Controls MST Trim and Controls Beckett AFG Burner Beckett OIL Burner Part NOS. for MegaSteam Series Boilers Beckett AFG Burner specifications OUTService Record Limited Warranty

MST513, MST396, MST629, MST288 specifications

The Burnham MST series, comprising models MST396, MST629, MST513, and MST288, is renowned for its robust design and exceptional performance in the boiler industry. Each model is engineered to provide optimal efficiency and reliability for residential and commercial heating applications.

The Burnham MST396 is distinguished by its high thermal efficiency and advanced combustion technology. This model features a cast iron heat exchanger which ensures superior heat retention and distribution. The MST396 is equipped with a powerful burner that allows for variable firing rates, maximizing efficiency and extending the lifespan of the unit. Additionally, it includes a built-in electronic ignition system that enhances reliability while reducing the need for frequent maintenance.

Moving to the MST629, this model is designed for larger applications needing higher output. It boasts a significant BTU input and utilizes a multi-stage burner system. This ensures optimal combustion and adapts to varying demand, providing consistent heat without wasting energy. The MST629 also incorporates enhanced insulation and an advanced flue gas venting system to improve safety and minimize energy loss.

The MST513 caters to mid-sized applications with its adaptable performance and user-friendly features. This model is notable for its compact design, making it suitable for installations with limited space. It uses a two-stage burner for efficient energy use and offers a smart control system that monitors performance in real-time. This allows users to make informed decisions about their energy consumption and maintenance needs, ultimately leading to cost savings.

Lastly, the MST288 is the smaller model in the series, ideal for homes and small businesses. Despite its size, it does not compromise on efficiency. The MST288 features a straightforward design, ensuring ease of installation and maintenance. It utilizes a single-stage burner that provides consistent heat output, making it a reliable choice for low-demand applications. The unit is also equipped with adjustable settings, allowing users to tailor their heating needs effectively.

In summary, the Burnham MST series demonstrates a remarkable blend of innovation and practicality across its models. With features like advanced burner technology, efficient heat exchangers, and smart controls, the MST396, MST629, MST513, and MST288 cater to a wide range of heating needs while prioritizing energy efficiency and user comfort. These models stand out in the market, continually setting a standard for performance and reliability in heating solutions.
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