Maine Journeyman Oil Fuel Board Rules Practice Test

These questions are part of the practice quiz. Start practicing

• Who can request an exception for welding repair limits on a heat exchanger?
• For appliances requiring a negative chimney draft, the chimney connector length should not exceed what percentage of the chimney portion above the connector inlet?
• Which type of fuel burning appliances are permitted to connect to the same flue?
• What voltage and type of receptacle outlet should be provided adjacent to the equipment?
• To meet safety regulations, what should be done about tank and outdoor piping regarding snow or falling ice?
• How many PSI is required to push water 2.3 feet up a pipe?
• What type of chimney construction is generally required for oil burning appliances?
• What is the required free area for permanent openings to obtain ventilation air from outdoors for appliances located in unconfined spaces?
• According to NFPA, what is the maximum allowable shaft seal pressure?
• For underground fill and vent pipes, which materials can be used?
• The fuel supply piping between the tank and the appliance shall have what diameter?
• For safe operation, what should always be monitored in oil burning systems?
• Where should auxiliary tanks be located relative to the supply tank from which they are filled?
• What is the minimum distance required for a conduit above grade to prevent undetected oil leaks?
• Which type of air is considered least important for the combustion of oil?
• For roof top units, how far back from the edge of the roof should the appliance be installed?
• What must not be present in a chimney connector for safe operation?
• What is the over fire draft reading typically measured at?
• What action should be taken if code violations are observed in a homeowner's house?
• What is the purpose of the thimble in a chimney apparatus?
• Where should oil shut off valves be installed for best practice?
• What is the specified gap for electrodes in a boiler system?
• Which NFPA standard is applicable to chimneys?
• What is required for an oil supply line located more than 4 feet above a burner?
• For furnaces or boilers adjacent to outside walls, what is the minimum required permanent air supply inlet?
• How many times may a welding repair of a heat exchanger be made without prior approval?
• Under which condition can no oil supply line be connected in walls or ceilings?
• When taking oil supply from the top of an oil tank, where must a thermally operated shut-off valve be installed?
• A chimney is not permitted to pass through which of the following?
• Under normal operating conditions, tanks are permitted to operate at what maximum gauge pressure?
• A floor furnace must be placed so that no object can be nearer than how many inches?
• What is the minimum pitch required for a chimney connector?
• What should the size of the fill pipe be, and how should it be pitched?
• How should auxiliary tanks be filled?
• A thimble for a chimney connector is permitted if it is:
• Why are vent alarms required for fuel oil tanks?
• In relation to boiler room construction, what factor is critical for safety?
• What is the maximum temperature for hot water provided to tanks heated by hot water coils?
• When is it acceptable to deviate from approved heating device installation instructions?
• What is the type of damper that cannot be installed in the chimney connector?
• What must be maintained in continuity for a copper oil supply or return line beneath a floor surface?
• How far should a service switch be from the burner?
• Manholes with a diameter of at least how many inches must be installed in the top of tanks over 5,000 gallons?
• What must be ensured before welding on any heating component?
• With what must supply and return lines be connected?
• What is the function of a stack switch or stack relay?
• A floor furnace chimney connector must be how far from combustibles?
• For vacuum testing for leaks, what should be the duration of the test?
• What is the acceptable breach draft range?
• How far must the highest point of a tank terminal be from the ground?
• How far should oil burners be installed from an unenclosed fuel oil tank?
• What characterizes an interrupted ignition system?
• What may be installed in the supply line but not in a return line?
• If the free area of a wood louver is unknown, what free area should be assumed?
• What is the minimum mesh size for screens used in louvers and grilles?
• What is the maximum tank size that can be installed on a higher floor?
• What is the maximum capacity allowed for an engineered tank system located outside a building?
• What is the purpose of maintaining a minimum pitch in a chimney connector?
• What type of planning is essential for the effective operation of a boiler or furnace?
• A floor furnace should be placed not closer than how many inches to the nearest wall?
• What safety measure should be taken regarding oil burning appliances?
• Who must give written approval if it's necessary to change, modify, or alter a manufacturer's instructions?
• What is a likely consequence of not obtaining prior approval for heat exchanger repairs?
• A tank of a capacity between 10 gallons and 1320 gallons shall not be placed within how many feet of a horizontally open flame or fuel burning appliance, unless separated by 1 hour fire resistance?
• How far must any air inlet and flue gas outlet of an appliance terminate from the vent outlet of a liquid fuel supply tank?
• A duct furnace flue pipe must provide a clearance to combustibles of how many inches?
• High heat appliances must maintain clearances to combustibles of not less than how many feet at the side and rear?
• How long can a leaking oil supply tank be temporarily repaired with a tank patch?
• What is the flash point of No. 1 and No. 2 oil?
• What is the primary purpose of combustion air in industrial settings?
• The fuel pipe shall be connected to the top of the tank except for which circumstances?
• If a manufacturer’s instructions need alteration, what is the initial step required?
• What is the maximum gauge pressure to be used for pressure testing fuel supply lines?
• Outside oil tanks shall not be installed on which type of surfaces?
• When baffles are closed, what percentage of the chimney connector area can they block?
• What is the correct approach when installing connections to an underground tank?
• A down-flow furnace must include temperature control to limit outlet air to what maximum temperature?
• For a chimney connector, how should joints be secured?
• The flue gas outlet of appliances must terminate how far below any door, window, or air inlet?
• Who must be contacted before welding on a non-residential warm air heat exchanger?
• How far must a venting system terminate above an air inlet that is within a certain distance?
• What is the percentage of hydrogen in heating oil?
• How many screws must each joint of the chimney connector be fastened with at a minimum?
• During installation, what is the desired position of vent pipes in relation to the fill pipe opening?
• What is expected of a chimney connector when attached directly to the chimney?
• What is a requirement for the installation of thermal cut-off switches?
• What is the recommended stack temperature above ambient temperature?
• What is the requirement for ensuring that spills are prevented during tank filling?
• How many inches of free area are needed for ventilation air from a confined space per BTU?
• What is the required opening free area for combustion air supplied from outside for appliances located in confined spaces?
• For connectors, which angle is preferred over 90 degrees?
• What material should the foundation for tank supports be made of?
• What must an oil supply line that penetrates a foundation wall be?
• Rooms containing medium heat appliances should be provided with what?
• What must be provided for each oil burning appliance connected to a chimney or power vent?
• When filling a tank directly supplying a fuel burning appliance, how should the filling terminate?
• What type of wire and voltage limit is required for safety control circuits?
• When the free area of a metal louver is not known, which free area assumption is correct?
• What type of device must an electrically heated heater have to ensure fuel safety?
• In which configuration should a fuel tank be filled to prevent overpressure?
• High heat appliances must maintain clearances to combustibles of not less than how many feet above?
• No oil supply line can be connected in walls or ceilings unless what is possible?
• In a fuel storage system with three or more tanks, what must each appliance line have?
• What safety feature must oil burners, other than stoves with integral tanks, have?
• What is the main purpose of having proper stack temperatures in oil systems?
• Wall registered models are not allowed to be placed closer than how many inches to a corner?
• What should be done if a heat exchanger is no longer in production and needs welding?
• What must all No.1 and No.2 fuel oil tanks from 65 to 5,000 gallon capacity located outside have?
• Tanks shall be permitted to operate under normal operating pressures not exceeding which gauge pressure?
• What should be the distance from the combustion air inlet to the inside structure of an L-shaped structure?
• How long should pressure testing of fuel supply lines last at minimum?
• How far from building openings shall vent pipes terminate?
• If the outlet of an oil supply tank is more than 4 feet above the burner, what is required?
• Under what condition are two or more oil burning appliances allowed to connect to a single chimney?
• Which of the following is true regarding the connection of multiple vent pipes?
• What is permitted to be installed between a boiler and safety devices?
• When outside oil tanks are used, where must a thermally operated shut off valve be installed?
• What is the minimum distance an underground tank must be from the nearest wall of a basement or property line?
• What is the required distance for flue gas outlet termination from the soffit of the roof?
• In tank installations, what is not permitted regarding pipe flanges?
• What type of dampers must be designed to maintain a safe opening at all times?
• In a fuel supply system, which component is required to be installed as close as practical to the tank?
• A tank with a capacity not exceeding 660 gallons may be installed outside, provided it is separated from adjoining property by what distance for tanks over 275 gallons?
• For commercial and industrial furnaces or boiler rooms not adjacent to outside walls, how should combustion air be supplied?
• If the low water cut off is not directly in the boiler, where can it be installed?
• How far should oil burners be installed from an electrical panel?
• Where should connections to an underground tank be made?
• Which type of fitting is prohibited for use in fuel systems?
• When a venting system terminates at the sidewall of a structure, how many feet above an air inlet must it be?
• An auxiliary tank shall be provided with an overflow pipe that drains where?
• How high must steam safety or pressure relief valves terminate above the floor?
• What happens to the resistance when a cad cell detects a flame?
• What document must be provided when altering manufacturer's installation instructions?
• Who is responsible for ensuring proper completion of a chimney under the emergency chimney waiver?
• What are the acceptable materials for tank supports?
• What is the voltage produced by a solid state igniter?
• To prevent oil spills, where must outside tanks and piping be installed?
• Before firing a newly installed furnace, what requirement must be met?
• What is a requirement for the draft fan used to increase low draft conditions?
• To prevent undetected oil leaks, conduit must penetrate the cement surface how many inches above grade?
• All existing oil tanks must meet the same standards as which type?
• What should be the size of the outlet pipe in a joint vent manifold?
• When installing a copper oil supply or return line under cement, what must be done?
• A return line from a burner or pump back to a supply tank shall have no valves or obstructions except for what?
• What is the minimum clearance required for a duct furnace to combustible materials?
• What is the requirement for a master license wishing to exceed the limits of heat exchanger welding repairs?
• How should safety controls or protective devices be connected?
• The pressure at the fuel supply inlet to an appliance shall not exceed what gauge pressure?
• What distance must tanks 275 gallons and under be separated from adjoining property?
• What is the minimum oil pump pressure required?
• What principle is emphasized for repairs and modifications to heating equipment?
• How far must a TYPE L venting system exit above the highest point of a roof?
• What should a chimney connector of a low, medium, or high heat industrial appliance not pass through?
• At what pressure is a tank typically tested?
• What must be performed during an annual tune-up of a heating system?
• What type of connectors should be used for appliances installed in attics or crawl spaces?
• What is the ideal size for a chimney connector?
• What is recommended for the arrangement of a draft regulator in an oil burning appliance?
• In the event of an emergency, how long may a licensee defer required chimney repairs?
• What material is NOT suitable for underground fuel supply lines?
• What type of oil tanks must be liquid tight?
• What percentage of heating oil comprises carbon?
• What is the typical operating pressure for residential boiler systems?
• What is the typical resistance in ohms for a cad cell?
• How many BTUs per pound of heating oil are commonly recognized?
• What is a common safety feature of each supply line in a fuel storage system?
• When tanks are heated by steam coils, the steam coils must not exceed what gauge pressure?
• At what temperature should fusible links melt?
• What must coated copper tubing have installed at the tank when used underground?
• What is the minimum diameter of a tank vent opening for tanks with a capacity of 660 gallons or less?
• What free area is required for openings when air is taken from outdoors for appliances in confined spaces?
• What does tertiary air ensure in the burning process?
• Where should a low water cutoff typically be installed?
• What is the minimum distance from a tank or fuel pump where the fuel supply line does not require coating?
• How should fuel not be transferred to a tank?
• In which type of building structure is proper combustion air supply particularly crucial?
• What is required for all oil-fired boilers to ensure safety?
• When installing multiple fuel oil tanks with separate fill pipes, what venting requirement is not applicable?
• What should a vacuum testing process achieve?
• How far must the flue gas outlet be above grade?
• What is the minimum height requirement for the exit terminal of a mechanical draft system located adjacent to a public walkway?
• Which type of air is most critical for effectively burning oil?
• In what position must steam safety and pressure relief valves on boilers be installed?
• A miscellaneous air heater is designed to discharge air at a temperature not to exceed what?
• In what situation are chimney connectors allowed to pass through a combustible wall or partition?
• What type of ignition system remains active as long as the burner is operational?
• Which component is crucial for the burner control in an oil heating system?
• Why must the entire length of the chimney connector be accessible?
• What levels should chimneys with multiple openings have?
• How much should the conduit end extend from any connection except at the fuel tank for encased copper oil lines?
• A tank with a capacity of 10 and 330 gallons, having two bottom openings for fuel supply, must be arranged in what manner?
• What is the minimum distance a tank holding less than 10 gallons must be from an ignition source?
• What must be performed before a new heating installation?
• How must any unused opening in a tank be closed?
• What does complete combustion of oil primarily depend on?
• What is the preferred slope for a tank with a capacity of 10 and 330 gallons?
• For commercial and industrial equipment, where is the emergency switch typically installed?
• What is the free area requirement for openings from which air is taken from inside buildings for appliances located in confined spaces?
• How many feet must the flue gas exit of a chimney be above the highest point on a roof?
• What characterizes the installation of oil shut off valves?
• Residential steam boilers typically operate at less than what psi?
• What is the maximum capacity allowed for a non-engineered tank system located outside a building?
• What should all portions of a mechanical draft system designed under positive pressure prevent?
• What must all No.1 and No.2 fuel oil tanks from 11 to 5,000 gallons located inside a structure have?
• Where should oil burning appliances not be installed?
• What is the recommended net flue gas temperature?
• A supply tank exceeding how many gallons must be installed on the lowest floor?
• What is the maximum horizontal length of the chimney connector for natural draft appliances?
• Should the connection point between multiple vent pipes be lower than the top of the fill pipe opening?
• How many pounds of air are needed to burn each pound of heating oil?
• An auxiliary tank shall not exceed how many gallons?
• What is the minimum distance that the exhaust from appliances must be from gravity air inlets, doors, and windows?
• What condition allows a maximum 660-gallon storage tank to be installed on a higher floor?
• When connecting an oil filter to copper piping smaller than 3/4", what is required if it is not directly connected to the oil tank or burner?
• What is the gauge pressure limit for emergency venting conditions in tanks?
• For combustion air taken from outdoors, what is the free area requirement for ventilation air from inside the building?
• Where must a listed lever or wheel thermally operated oil shut off valve be installed?
• Which is an appropriate installation location for a service switch?
• What depth of vacuum should be maintained during leak testing?
• What must be ensured in the fill pipe installation to avoid liquid collection?
• Which material is required for above ground fill and vent piping?
• What is the ignition point of No.2 heating oil?
• Which type of fittings shall not be used unless for introducing lines at the top of the tank?
• In order to prevent undetected leaks, how much larger must the conduit be than the supply and return lines?
• Is it permissible to manifold vent pipes from multiple tanks into a single outlet pipe?
• Who ultimately ensures compliance under the emergency chimney waiver?
• Vent pipes shall terminate not more than how many feet from the fill pipe and a point visible from the fill point?
• What is the typical temperature of water in a boiler?
• What is the minimum distance that fuel oil supply tanks must be from any gas or solid fuel burning appliance?
• Where is a stack relay typically found?
• Which NFPA standard must be met for oil burning boilers with inputs above 12,500,000 BTU's?
• What is the maximum capacity for a single above-ground tank?
• Who is responsible for overseeing welding repairs of a non-residential warm air heat exchanger?
• What is the minimum thickness for steel pipe connectors for sizes over 10 inches?
• How many feet must high heat appliances be cleared in front?
• Where shall an accessible fusible link be installed?
• Where must a thermally shutoff valve be installed when inside tanks are used and the oil supply tank is in a separate room?
• What is the potential risk if an oil supply tank is leaking?
• According to standards, what is the minimum capability a chimney must have?
• If the boiler room entrance is only accessible from outside, where should the emergency switch be placed?
• What is the pour point of No.2 heating oil?
• What does the term 'authority having jurisdiction' refer to?
• What is the minimum required distance a storage tank must be from any potential source of ignition?
• Where must a thermal cut-off switch be installed in relation to the burner circuit?
• How much more volume does steam occupy compared to water?
• What should not be used for unions or gaskets?
• What type of fittings must be used for connections of supply or return oil lines located outside?
• What is the appropriate termination distance for a flue gas outlet from any window or door?
• Where should a properly sized and rated oil filter or strainer be installed?
• Where should the combustion air inlet and flue gas outlet of a direct vent appliance terminate in relation to each other?
• At what pressure are residential hot water boiler relief valves generally set to open?
• For restrictive openings, what is the requirement for air supply from outdoors?
• What is the primary role of secondary air in oil combustion?
• What is described as an intermittent ignition?
• What size screens shall vent caps have?
• What aspect of chimney function is critical for safety in oil burning applications?
• When considering chimney installations, what must be ensured regarding connector lengths?