Download Low PSI Burner Operation: A Comprehensive Guide to Safety and Maintenance and more Exams Advanced Education in PDF only on Docsity!
Low PSI burner Operator P99 Exam With Accurate
Solutions 100% Correct Pass Guaranteed
Every oil burning installation which is not fully automatic or does not require preheating shall be operated by, or under the direct supervision of a person holding a certificate of fitness issued by the fire commissioner. Such person shall be in the building at all times while the burners are in operation, and shall be present in the boiler room during the starting of the operation of a boiler.
Low temperature equipment
Low temperature equipment whose products of combustion at the point of leaving the equipment have a temperature of 600 F or less under normal condition.
Medium temperature equipment
Medium temperature equipment whose products of combustion at the point of leaving the equipment have a temperature between 600 and 1000 F under normal operation
High temperature equipment whose product of combustion at the point of leaving the equipment have a temperature of 1000F or greater under normal operation conditions
Ventilation shall be capable of providing at least thirty six CFM of air for each gallon of oil per hour required to fire the equipment to gross output. If ventilation for combustion is supplied mechanically, the ventilation system shall be electrically interlocked with the burner so that when the burner is in operation, the ventilating system shall maintain the room in which the equipment is located at a pressure no less than the outdoors atmospheric pressure. Flue Dampers. Dampers in flues shall be constructed so that they cannot completely cut off the passage of flue gasses at any time. Tight closing dampers may be installed with approved automatic draft and combustion controls.
Fuel Oil equipment shall mean hydrocarbon oils with a flashpoint not lower than 100F
The use of crankcase reuse oil as fuel oil is prohibited.
Installation of piping and tubing. Overflow pipes, where installed, shall not be smaller in size than the supply pipe.
Where a shut-off valve is installed in the discharge line from an oil pump, a relief valve shall be installed in the discharge line between the pump and the first shut-off valve. There shall be a relief or pressure regulating valve on the heater side of the shut-off valves in the oil piping system.
Heated coils in storage tanks. The heating of oil in storage tanks shall be by means of coils using low pressure hot water or steam, or by means of electric heater approved for use in oil storage tanks.
Where a single tank and a single burner are installed, a shut off valve shall be required in the supply line at the tank and another at the burner.
On storage tanks of sixty gallon or less capacity used with manually operated burners, such remote control may be installed in the supply lines between tank and burner.
Pressure in a storage tank for the purpose of discharging oils shall be prohibited.
No. 6 oil. temperature in the storage tank is usually maintained between 100F and 130F. Preheated are used to heat the oil further before the oil enters the burners for combustion, between 160F and 180F. The normal oír pressure for No. 6 is between 30 and 50 PSI.
Combustion A chemical union between the oxygen in the air and combustible elements in the fuel oil, i.e., hydrogen and carbon During Combustion Carbon (about 85%) Hydrogen (14%)
efficient operation of the burner. After drip is dangerous in that it may lead to fire on the floor in front of the heating unit.
A seal leakage on the oil pump shaft bearing may also permit the leaking of oil on the floor in front of the heating unit. Oil leaked in this fashion could be ignited.
It is brought about by either dirty or damaged nozzles or rotary cups. Eventually, there is a build-up of the carbon deposit in the combustion chamber. The minimum number of times nozzles should be cleaned daily in a NO 6 oil burner is once.
Blockages of the chimney or flue passage lead to smoke in filling the cellar or boiler room.
Too much water in the fuel oil, or the wrong grade of fuel oil may be the cause of this improper atomization.
The protective relay is supported to shutdown the oil burner if flame is established without quickness. The most usual cause for puff back in the burner is delay in ignition. Puff Back can cause a boiler door to blow open and the smoke pipe to fall down.
In the event of proper ignition not taking place, the only indication of flame failure may be a strong smell of fuel oil in the area. Vaporised oil looks just like condensed steam. It is pure white but smells and taste like fuel. This situation needs to be addressed at once, having shut the burner, the area needs to be completely vented. Any source of ignition eliminated.
The vaporstat is a low pressure; pressure control mounted on the fan housing and will
shut down an oil burner if no air for combustion exists.
The photoelectric cell is a flame detection control. It is a device that will shut down an oil burner if a flame is not visible to the scanner or photoelectric cell.
The aquastat operates the oil burner in the summer for domestic hot water needs.
The stack switch, or primary control, is the main controller of combustion. It serves to shut off the oil burner and lock it out on safety in case of ignition failure or loss of flame within a combustion chamber. A stack switch operates if there is no heat in the smoke stack.
The smoke alarm is mounted on the smoke stack or chimney, and it will shut down an oil burner and turn on an alarm if there is excessive smoke or if the fire is not proper.
The pressuretrol-pressure control-is an automatic electric control. It is an operating limit control and is a device that will shut down the oil burner when the steam pressure reaches a desired point.
The manual reset pressuretrol serves as a control that will be utilized to shut down a steam boiler in case the pressure keeps on working above the operating pressure control setting. It serves to lock out the oil burner on safety in case the operating limit pressuretrol fails to stop the oil burner. This switch will not close again automatically but must be reset manually.
Safety or pop off valve
The safety or pop off valve is a device used to relieve excesssive steam pressure. It is on or near the top of a steam boiler.
Storage Tank
Smoke Alarm
15
Boiler pressure gauge
16
Safety valve
17
Pressuretrol
18
Pressuretrol (manual)
19
