Burnham MST396 Side and Top Jacket Panel Installation, External Electrical Enclosure Mounting

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6.Repeat above steps with right Cleanout Cover.

7.Apply the adhesive sealant to the underside of the collar, all around, at the inside corner of the collar outer ring. Insure adhesive bead is complete all around and without gaps.

8.Place the collar over smokebox tongue and align collar integral mounting ear slots with smokebox bosses.

9.Thread-in both 5/16”-18 – 7/8” hex head cap screws hand tight, then, alternately tighten them with open end or socket wrench.

I.Insulation Wrapper and Burner Power Outlet Receptacle with Harness Installation.

1.Insulation Wrapper is vacuum packed/sealed in plastic bag at the factory.

2.Carefully cut the plastic bag and remove Insulation

Wrapper. The wrapper will expand upon removal.

3.Unfold Insulation Wrapper, position it over section assembly centered left to right and align two wrapper upper holes with 2" NPT pipe tappings in front and rear section top.

4.Insure wrapper fits snugly around rear section tankless heater collar/ mounting flange (if boiler is equipped with tankless heater) and trim the insulation at tankless heater cutout. Do not trim off insulation on boilers having non-heater rear section.

5.Tack Insulation Wrapper bottom ends under section assembly, between front and rear section legs.

6.Locate and remove Burner Power Outlet Receptacle with factory attached Burner Harness from Control Carton.

7.Feed Molex end of Burner Harness thru front jacket panel right side outlet receptacle cutout. Insure that the receptacle middle prong opening is facing down. Snap the receptacle into front jacket panel. Temporarily, stuff Molex end of Burner Harness between front panel insulation and insulation wrapper near boiler top.

J.Side and Top Jacket Panel Installation.

1.Pick up Left Side Jacket Panel from Jacket Carton.

See also “Repair Parts” Section, “Jacket Assembly” illustration for part identification.

2.Place Left Side Jacket Panel over four #8 x ½” shoulder sheet metal screws, earlier installed at

Front and Rear Jacket Panel side flanges, so teardrop cutouts in the side panel inside flanges engage all four screws simultaneously.

3.Slide the panel downwards to lock all screws securely.

4.Pick up Right Side Jacket Panel from Jacket Carton.

See also “Repair Parts” Section, “Jacket Assembly” illustration for part identification.

5.Pick up Molex end of Burner Harness stuffed between front panel insulation and insulation wrapper and feed it thru Right Side Jacket Panel front cutout, letting the harness connector to hang over the cutout edge temporarily.

6.Place Right Side Jacket Panel, clearing rear section tankless heater collar/ mounting flange, over four

#8 x ½” shoulder sheet metal screws, previously installed at Front and Rear Jacket Panel side flanges, so teardrop cutouts in the side panel inside flanges engage all four screws simultaneously.

7.Slide the panel downwards to lock all screws securely.

8.Pick up Top Jacket Panel from Jacket Carton.

9.Place the panel between side panels upper inside flanges and slide it forward, until top panel front flange U-bend locks over front panel top flange, and, top panel rear flange is positioned over rear jacket panel.

10.Locate/remove two #8 x ½” sheet metal screws from Hardware Bag.

11.Install both screws into top panel rear flange to secure the top panel to rear jacket panel.

K.External Electrical Enclosure Mounting.

1.Remove two #8 x ½” shoulder sheet metal screws and one #8 x ½” sheet metal screw from Hardware Bag.

2.Install both #8 x ½” shoulder sheet metal screws into Right Side Jacket Panel, at two upper corners of the panel front cutout.

3.Locate and remove External Electrical Enclosure assembly from Control Carton.

4.Remove the enclosure cover and set aside.

5.Pick Molex connector end of Burner Harness and feed it inside the enclosure, thru bushed hole at enclosure lower left corner, next to transformer/ relay.

6.Place the enclosure over installed shoulder sheet metal screws, so teardrop cutouts in the enclosure base engage both screws simultaneously, then, slide the enclosure downwards to lock it in place.

7.Install #8 x ½” sheet metal screw thru enclosure base lower hole, located to the right of transformer/ relay, into right side panel to secure the enclosure.

8.Plug-in burner harness Molex connector into dedicated burner harness receptacle inside the enclosure (lower left off transformer/relay). See “

Control Plug-In Diagram” label attached to inside of the enclosure cover for details.

9.Do not install the enclosure cover yet; proceed to control installation.

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Contents 100618-01R4-5/08 Price $3.00 MegaSteamImportant Information Read Carefully Page Table of Contents Page =B=R NET Boiler is Suitable for Installation Section I PRE-INSTALLATIONPage Insulation Wrapper Control CartonJacket Carton Instruction/Label BagJacket Front Panel Installation Procedure To Open, Close and Secure Burner Swing DoorBoiler Removal from Skid Page Page Closing / Securing Burner Swing Door Flueway Baffle InstallationBaffle Usage Flue Cleanout Covers and Smokebox Collar Installation Jacket Rear Panel InstallationLess Heater UNCExternal Electrical Enclosure Mounting Side and Top Jacket Panel InstallationPressure Gauge and Gauge Glass Installation Trim and Controls Installation. Pressure Limit InstallationFloat-Type Lwco and Pressure Limit Installation Oil Burner Installation Safety Valve and Drain Valve InstallationDo not install burner without gasket Aquastat bulb must be fully inserted into the wellOil Burner Installation Evaluate the existing steam system Section III Steam Boiler Piping & TrimRecommended 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 Chimney Venting Chimney ConnectorSection V Venting & Air intake piping Recommended Vent Pipe Arrangement and Chimney Requirements Draft Stack TemperatureDo not exceed maximum allowable air intake length Minimum ClearancesSeal all external joints with weatherproof caulk General Section VI ElectricalWiring 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 Float Lwco See Figure Boiler Sequence of Operation with Probe Lwco See FigureSingle Pipe Oil Line Single Pipe Oil LinesSingle-Stage Units 3450 RPM Two Pipe Systems Two Pipe Oil LinesTwo-Stage Units 3450 RPM Two Pipe Systems Section Viii System START-UP Always Inspect Installation Before Starting BurnerAdjust OIL Burner While OPERATING. flame present Adjusting Fuel Pump PressurePage Cad Cell Resistance When Sensing Flame R7184 Terminals, LED and Reset ButtonJumper must be removed after this check Cad Cell LocationAvoid Breathing Fiber Particulates and Dust Steam Boilers Section Ix Maintenance and Service InstructionsPage Gallons / Month MST288 MST396 MST513 MST629 Clean the Combustion Chamber Section X Boiler CleaningClean the Flueways See Figure 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 OUT Beckett AFG Burner specificationsService 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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