Burnham L7248 manual Remove Flame Plug in Swing Door Start OIL Burner, Adjust OIL Pressure

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table 6: beckett afg burner

 

Firing

 

 

 

Nozzle

 

 

 

Settings

 

Boiler

 

Static

 

 

 

 

 

 

 

 

Pump

Rate

Head

 

 

 

 

 

Air

Air

 

Model

Disc

Manufacturer

GPH

 

Angle

Type

Head

Pressure

(GPH)

 

 

Shutter

Band

 

 

 

 

 

 

 

 

 

(PSIG)

 

 

 

 

 

 

 

 

 

 

 

 

LE1

0.60 *

MB(L1)

3-3/8U

Hago or

0.50

 

70°

B

5

0

N/A

140

LE2

1.00

Delavan

0.85

 

60°

B

10

0

N/A

140

 

 

 

LE3

1.25 +

MD(V1)

2-3/4U

Delavan

1.10

 

45°

B

10

1.5

0

140

Settings are approximate and must be verified by Smoke and Carbon Dioxide measurement. Readjust where necessary. See Text of the Manual.

* Install low firing rate baffle for 0.60 GPH firing rate.

+ Do not change the firing rate of the 1.25 GPH burner.

Table 6A: Riello burner specifications

Boiler

Firing Rate

Burner

Nozzle

 

Settings

 

Model

(GPH)

Model

Air Gate

Pump Pressure

Turbulator

 

LE1

0.60

F3

Delavan 0.50 x 60°A

2.8

 

0.5

LE2

1.00

F5

Delavan 0.85 x 60°A

3.0

145

1.0

LE3

1.25

F5

Delavan 1.00 x 60°A

3.5

 

3.0

C.Attach a plastic hose to fuel pump vent fitting and provide a pan to catch the oil.

D.REMOVE GAUGE PORT PLUG from fuel pump and install pressure gauge.

E.REMOVE FLAME PLUG IN SWING DOOR.

8.START OIL BURNER

A.Open vent fitting on fuel pump.

B.TURN ‘ON’ BURNER service switch and allow burner to run until oil flows from vent fitting in a

SOLID stream without air bubbles for approximate- ly 10 seconds.

C.Close vent fitting and burner flame should start immediately after pre-purge is complete. Pre-purge prevents burner flame until 10 seconds has elapsed after initial power is applied to burner. During pre- purge, the motor and ignitor will operate but the oil valve will remain closed. Refer to Oil Primary Control Instructions for more details.

9.ADJUST OIL PRESSURE

A.Locate oil pressure adjusting screw and turn screw to obtain the oil pressure indicated in Tables 6 and 6A.

B.DO NOT REMOVE PRESSURE GAUGE until later.

10.OTHER ADJUSTMENTS

A.ADJUST THE AIR BAND AND/OR AIR SHUT- TER

Beckett Burners:

Adjust air supply by loosening lock screws and moving the air shutter and if necessary the air band. Refer to Table 6 for preliminary settings.

B.ADJUST DRAFT REGULATOR for a draft of 0 to maximum of -.03" (water gauge) in the breeching after chimney has reached operating temperature and while burner is running. Burner will operate with a positive draft over fire and zero draft in the breeching. Adjust Draft Regulator such that maximum draft of -.03" is reached in coldest weather.

C.READJUST AIR BANDS on burner for a light orange colored flame. 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%. 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 to -.03" (water gauge) in breeching.

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

E.CAD CELL LOCATION AND SERVICE

The burner is supplied with a cadmium sulfide flame detector mounted at the factory, mounted on the bottom of the transformer. See Figure 16. To service cad cell or to replace the plug in portion, swing open the transformer. After service is complete, be sure to fasten down the transformer.

F.FLAME FAILURE

The LE boiler controls operate the burner automati- cally. 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.

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Contents LE Series Important Information Please Read this page Carefully General Information Table of ContentsMinimum Installation Clearances To Combustible Materials II. Installation Instructions Remove CrateRemoval of Boiler from Skid Page Page Fuel Units and OIL Lines Install Electric WiringSINGLE-STAGE Units 3450 RPM TWO-PIPE Systems Sequence of Operation Wiring Diagram for LE Boilers with Riello Burner Press RED Reset Button III. Operating and Service InstructionsOperation Display ReadoutOpen ALL OIL Line Valves Remove GUN AssemblyAdjust OIL Burner Before Starting High Limit ControllerRemove Flame Plug in Swing Door Start OIL Burner Adjust OIL PressureOther Adjustments Adjust the AIR Band AND/OR AIR SHUT- TER CAD Cell Location and ServiceTest Controls Check for Clean CUT OFF of BurnerHints on Combustion Make pH or Alkalinity TestAvoid Breathing Fiber Particulates and Dust High Altitude Installations IV. Boiler Cleaning Clean the Firetubes Close BoilerAfter Cleaning Description Qty Part Number Repair PartsLE Boiler Jacket & Insulation LE Bare Boiler Assembly Beckett AFG OIL Burner Repair Parts MOD E L LE1 LE2 Service Record When VI. Low Water Cut Off LwcoLimited Warranty

L7248 specifications

The Burnham L7248 is a notable model in the realm of heating solutions, designed specifically for residential and commercial use. Renowned for its efficiency and reliability, the L7248 embodies innovative technology combined with user-friendly features, catering to diverse heating needs.

One of the key features of the Burnham L7248 is its advanced heating technology. It employs a gas-fired system that provides both hot water and space heating. This dual-function capability ensures that homes remain warm and comfortable during the colder months while also supplying hot water for daily use. The integrated control system allows users to manage the heating effectively, ensuring maximum comfort with minimal energy expenditure.

The L7248 is designed with durability in mind. Constructed from high-quality materials, the boiler is built to withstand the rigors of regular use while maintaining peak performance. Its advanced heat exchanger design enhances efficiency by ensuring optimal heat transfer, which translates to lower energy costs and a reduced environmental footprint. Furthermore, the unit operates quietly, providing a peaceful environment without intrusive noise.

In terms of safety, the Burnham L7248 incorporates several features that protect both the system and the home. It is equipped with advanced safety controls that monitor pressure and temperature, preventing potential hazards. Additionally, the unit’s design allows for easy servicing and maintenance, ensuring that it remains in good working condition for many years.

Energy efficiency is another hallmark of the Burnham L7248. With an impressive AFUE (Annual Fuel Utilization Efficiency) rating, the model significantly reduces fuel consumption, helping homeowners save on energy bills while promoting sustainability. The boiler is also compatible with various smart home technologies, allowing users to integrate it into their existing systems for enhanced control and efficiency.

Overall, the Burnham L7248 stands out for its combination of innovative technology, safety features, and energy efficiency. Whether for residential or commercial applications, it provides a solid, reliable heating solution that meets the demands of modern living. With its user-focused design and robust performance characteristics, the Burnham L7248 is an excellent investment for those seeking dependable and efficient heating.
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