Table of Contents
The numbers on the nozzle tell us the specific rating of the nozzle, the spray pattern angle, and the spray pattern type. The nozzle listing here has a . 75-GPM rating. That means the nozzle will spray . 75 gallons per hour of fuel oil at 100 psi.
What are the three numbers on an oil nozzle?
On oil nozzles, the first number is gallons of oil per hour at 100psi. The second number is the apex angle (30° to 90° arc) of the oil spray cone. The letters designate the fill of the spray cone: A or H = hollow, B or ES = solid, SS = semi-solid, W = multipurpose.
What is the difference between A and B oil burner nozzle?
The difference between an A nozzle and a B oil burner nozzle is that the B produces a solid rather than hollow core spray pattern. B nozzles are more-often used on larger or industrial oil burners. In my opinion an A nozzle will give an easier-to-set and cleaner flame in a small oil burner.
What does GPH mean on the nozzle?
GPH. Gallons per hour (gallons per hour: 1 gallon = 3.7853 l). This size unit is always based on water flow. See the table for a given nozzle to determine the pressure of her flow. SPRAY ANGLE.
What is a boiler nozzle?
Oil burner nozzles are the working end of the burner assembly. Usually, most parts of the furnace and the nozzle are only checked when there’s a need to service it or carry out repair work, which in most cases is once or twice a year.
What is the typical oil pressure for a gun type oil burner?
A residential gun-type burner normally requires a oil 80 – 130 psi oil pressure.
How do I choose an oil burner nozzle?
How to Calculate the Oil Burner Nozzle Flow Rate in GPH Nozzle GPH = BTU OUTPUT / (Heater % Efficiency) x 140,000. Oil Burner Nozzle GPH = Total Sq.Ft. Hot Water x 165 / (Heater % Efficiency) x 140,000. Oil Burner Nozzle GPH = Total Sq.Ft. Steam x 240 / (Heater % Efficiency) x 140,000.
How can you tell if an oil nozzle is bad?
A defective, damaged or old nozzle causes soot if it fails to break up the oil correctly. Soot can also appear if the nozzle filter is clogged by dirt or rust in the oil from the tank, or by dirt or other substances accidentally transferred to it by hand during installation.
Does the oil pump have to be primed after changing the nozzle?
Oil Furnace Filter If changing the filter and the seal does not allow the pump to prime, the nozzle or the line itself may be plugged, and a certified professional must pressurize the line and clear both the fuel line and the nozzle.
Which type of spray pattern is most often used on nozzles rated below 1.0 gph?
Generally, hollow cone nozzles are used on low firing rate burners, particularly those firing less than 1 GPH. This is an important advantage in fractional gallonage nozzles, such as those used in mobile home furnaces, where cold, high viscosity oil may cause a reduction in spray angle and increases in droplet size.
What is nozzle Inch hour?
For conventional sprayheads, precipitation rates typically range from 1.3 inches to 2 inches per hour. For gear drive rotors, precipitation rates typically range from 0.4 inch to 1 inch per hour. For rotary nozzles, precipitation rates typically range from 0.4 inch to 0.6 inch per hour.
What causes nozzle after drip?
If air gets trapped in the nozzle line or adapter, it will cause afterdrip. This is what typically happens: Air at atmospheric pressure is approximately 14.7 PSI, and is compressible. When the burner shuts off, the pressure eases back to atmospheric, and the air bubble expands back to 7 times its compressed volume.
What should the flame look like on an oil burner?
Look at the flame color on the oil burner as the collar is being moved. A flame that is dark yellow indicates less air. A flame that is receiving the right mixture of air should have a white, chrome or blue color. Depending on the brand of oil burner, the flame could also appear light yellow.
What should a boiler flame look like?
The burner flames from your natural gas furnace should look blue or almost completely blue. A healthy natural gas furnace flame is characterized by a roaring blue flame with a light blue triangle in its center. There may be a tiny tip of yellow. Blue flames are hotter and indicate more complete combustion.
What temperature should oil burner be set at?
As a rule, setting your heating control to 75 degrees should be sufficient to give you a perfectly warm house, while also allowing your boiler to run as economically as possible. Once this is set, you shouldn’t need to adjust it.
Can an oil burner nozzle be cleaned?
Remove the nozzle from the fuel and wipe it clean with a lint-free cloth. Unscrew the filter at the end of the nozzle and take out the brass screw pin.
What is a nozzle?
A nozzle is a device designed to control the direction or characteristics of a fluid flow (especially to increase velocity) as it exits (or enters) an enclosed chamber or pipe. A nozzle is often a pipe or tube of varying cross sectional area, and it can be used to direct or modify the flow of a fluid (liquid or gas).
What is the purpose of the oil pump and nozzle?
The “oil pump”, properly called the fuel unit in most oil heating texts, draws heating oil from the oil storage tank, pressurizes the oil to high pressures of 100 to 125 psi (typically on modern retention head oil burners), and delivers oil to the oil burner nozzle where the combination of high oil pressure, combustion.
