Burnham L7248 manual

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4. INSTALL BOILER CONTROL.
A. Pull bulb and capillary tube out of hole in back of control. Insert bulb in immersion well on top of boiler and secure control with set screw in control.
B. Secure flexible conduit to Jacket Wrapper side with conduit clamp and sheet metal screw. Conduit must be on same side of boiler as Swing Door hinges.
5. MOVE BOILER TO PERMANENT POSITION by sliding or walking.
6. INSPECT FRONT AND REAR DOOR INSULATION
PIECES AND COMBUSTION CHAMBER LINER
A. OPEN SWING DOOR on front of boiler. Use flashlight to inspect insulation pieces secured to front and rear doors. Inspect Ceramic Fiber Blanket secured to bottom of combustion chamber with water glass adhesive. Replace any damaged pieces.
7. CONNECT SUPPLY AND RETURN PIPING TO HEATING SYSTEM
A. Hot water pipes shall have clearances of at least ½” from all combustible construction.
B. Use a system by-pass if the boiler is to be operated in a system which has a large volume or excessive radiation where low boiler water temperatures may be encountered (i.e. converted gravity circulation system, etc.).
Valves should be located in the by-pass and return line as illustrated in Figures 4 and 5 in order to regulate water flow for maintenance of higher boiler water temperature.
Set the by-pass and return valves to a half throttle position to start. Operate boiler until the system water temperature reaches its normal operating range.
Adjust the valves to maintain 180°F to 200°F boiler water temperature and greater than 120°F return temperature. Adjust both valves simultaneously. Closing the boiler return valve while opening the by-pass valve will raise the boiler return tempera- ture. Opening the boiler return valve while closing the by-pass valve will lower the boiler return temperature.
C. If this boiler is used in connection with refrigeration
systems, the boiler must be installed so that the chilled medium is piped in parallel with the heating boiler using appropriate valves to prevent the chilled medium from entering the boiler, see Figure 6. Also consult I=B=R Installation and Piping Guides.
D. If this boiler is connected to heating coils located in air handling units where they may be exposed to refrigerated air the boiler piping must be equipped with flow control valves to prevent gravity circula- tion of boiler water during the operation of the cooling system.

Figure 6: Recommended Piping for Combination Heating & Cooling (Refrigeration) Systems

E.A hot water boiler installed above radiation level must be provided with a low water cutoff device as part of the installation.

If a low water cut-off is required, it must be mount- ed in the system piping above the boiler.

The minimum safe water level of a hot water boiler is just above the highest water containing cavity of the boiler; that is, a hot water boiler must be full of water to operate safely.

F.There are many possible causes of oxygen contami- nation such as:

(1)Addition of excessive make-up water as a result of system leaks.

(2)Absorption through open tanks and fittings.

(3)Oxygen permeable materials in the distribution system.

In order to insure long product life, oxygen sources should be eliminated. This can be accomplished by taking the following measures:

(1)Repairing system leaks to eliminate the need for addition of make-up water.

(2)Eliminating open tanks from the system.

(3)Eliminating and/or repairing fittings which allow oxygen absorption.

(4)Use of non-permeable materials in the distribu- tion system.

(5)Isolating the boiler from the system water by installing a heat exchanger.

CAUTION

Oxygen contamination of boiler water will cause corrosion of iron and steel boiler components, and can lead to boiler failure. Burnham's standard warranty does not cover problems caused by oxygen contamination of boiler water.



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Contents LE Series Important Information Please Read this page Carefully General Information Table of ContentsMinimum Installation Clearances To Combustible Materials Remove Crate II. Installation InstructionsRemoval 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 Clean the Firetubes Close Boiler IV. Boiler CleaningAfter 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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