General Installation Information; Combustion Chamber; Fuel Pumps; Fuel Lines - Wayne EH User Manual

Oil burners

Manual (10 pages)

Table of Contents

When installing the burner, be sure to provide adequate space for easy service and maintenance. Prior to installation of

the oil burner, the heating system should be carefully inspected for defects and cleanliness. The flue passages and heat

absorbing surfaces must be clean to ensure maximum heat transfer. Soot acts as an insulator, which retards the transfer

of heat. The combustion chamber, flue gas passages, and all doors and openings must be tightly sealed to eliminate air

infiltration. Excess air cools the flame and thus lowers efficiency. Inspect the flue and chimney for leaks and obstructions.

Be sure the chimney is of adequate size and height. Install a draft regulator the same size as the flue pipe (see paragraph

under DRAFT REGULATORS).

COMBUSTION CHAMBER

The purpose of a combustion chamber is to maintain a high flame temperature by reflecting the heat back into the flame.

A high flame temperature assures greater combustion efficiency and lower stack losses. An insulating refractory or a Fiber

Fax type chamber can be used with this burner. It is important to select and install, the correct nozzle size for a given

combustion chamber size (see Table 4 on page 35). On all oil burners the atomized oil must not touch the sides or bottom

of the combustion chamber or improper combustion will occur leading to smoke and soot build-up. To reduce smoke while

the burner is running, the burner must have an adequate supply of combustion air by having a large enough opening on

the air band assembly. If too much air is utilized it can lead to high gas exhaust temperatures, and lower combustion

efficiency. Install the burner so the face of the air cone on the burner is set a ¼ inch behind the inside front wall of the

chamber (see Figure 20 on page 30).

FUEL PUMPS

Model EHASR, EHA and EH oil burners are provided with single stage 3450 RPM fuel pumps with the by-pass plug

removed for a single pipe installation. This is satisfactory where the fuel supply is on the same level, or above burner,

permitting gravity flow of oil.

may cause damage to the shaft seal and allow it to leak oil.

When it is necessary to lift the oil to the burner, a return line should be run between the fuel pump and oil tank. (If lift

exceeds 10 feet, a two stage fuel pump must be used with a return line). When a two line installation is made, the by-pass

plug must be installed. This is supplied with the burner attached to fuel pump, along with a pump data sheet in a plastic

bag.

Do not install by-pass plug if running single pipe operation, this will over-pressurize the pump

causing an oil leak at the pump shaft seal.

FUEL LINES

When oil lines are continuous runs, heavy wall copper tubing is recommended for the fuel lines. Be sure that all

connections are absolutely air-tight. Check all connections and joints. Flared fittings are recommended. Do not use

compression fittings. Avoid running tubing against the appliance and across ceiling or floor joist; if possible install under

floor. Avoid using fittings in inaccessible locations. If possible, avoid running oil lines overhead. Specific information on

piping, connections, lift capabilities and tank installations is provided in the instruction sheet of the fuel pump

manufacturer, however if the instruction gets damaged or unreadable see oil pipe sizing information under reference

information on page 37. Install an UL certified oil filter of adequate size for all installations.