MAINE STATE JOURNEYMAN EXAM UP TO
15GPH TEST STUDY GUIDE 2025/2026
ACCURATE QUESTIONS AND CORRECT
DETAILED ANSWERS WITH RATIONALES ||
100% GUARANTEED PASS NEWEST
VERSION
A return line from a burner or a pump back to a supply tank shall have no valves
or obstructions except for what? - ANSWER A hard seat or ball valve with the
handle removed
An auxiliary tank shall be provided with an overflow pipe that drains where? -
ANSWER To the top of the supply tank
Vent pipes from more than one tank shall be permitted to be manifolded and
connected into one outlet pipe. True or False? - ANSWER True
What size shall the outlet pipe be of a joint vent manifold - ANSWER At least
one pipe size bigger than the largest individual vent pipe
, In no case shall the point of connection between two or more vent pipes be lower
than the top of the fill pipe opening. True or False? - ANSWER True
Pressure testing fuel supply lines should last for no less than how many minutes?
And what gauge pressure should be used? - ANSWER At least 10 minutes
No less than 5 but no more than 10
How long shall vacuum testing for leaks be held for how long? With how deep of
a vacuum? - ANSWER 30 minutes
20 in
The capacity of a single above ground tank or the aggregate capacity of two or
more above ground tanks shall not exceed how many gallons? -
ANSWER 20,000
Installation of oil-burning boilers with inputs above 12,500,000 BTU's shall meet
what NFPA - ANSWER NFPA 85
Oil burners other than oil stoves with integral tanks shall be provided with what? -
ANSWER A way to manually stop oil flow
A down flow furnace shall be automatically operated and equipped with an
approved temp control that will limit outlet air to what temp? - ANSWER 200
,A duct furnace shall have what clearance to walls, ceilings, and floors of
combustible materials? - ANSWER 6 inches
A duct furnace flue pipe shall be installed to provide a clearance to combustibles
of how many inches? - ANSWER 18 inches
A floor furnace shall be placed not closer than how many inches to the nearest
wall? And shall be placed so that a door, drapery, or similar object cannot be nearer
than how many inches? - ANSWER 6 inches
12 inches
Wall-registered models shall not be placed closer than how many inches to a
corner? - ANSWER 6 inches
How far from combustibles shall a floor furnace chimney connector be? -
ANSWER 9 inches
Rooms containing medium heat appliances shall be provided with what? -
ANSWER Ventilation
High heat appliances shall be installed with clearances to combustibles of not less
than how many feet at the side and rear? Above? And front? - ANSWER 10 feet
15 feet
30 feet
, A miscellaneous air heater shall be of a type designed to discharge air at a temp
not to exceed what? - ANSWER 250
For rooftop units, how far back from the edge of the roof should the appliance be?
- ANSWER 6 feet
What voltage and type of receptacle outlet should be provided adjacent to the
equipment? - ANSWER 120 volt AC grounding
Flash point of No.1 and No. 2 oil is what? - ANSWER 100
What is the ignition point of No.2 heating oil is what? - ANSWER 500
What is the pour point of No.2 heating oil? - ANSWER 17
What is the minimum oil pump pressure - ANSWER 100 PSI
What does NFPA limit shaft seal pressure to? - ANSWER 3 PSI
What temperature should fusible links melt at? - ANSWER 165
What is the overfire draft reading? - ANSWER -.02 (or manufacturer's specs)
What is a breach draft? - ANSWER -0.3 to -0.7
15GPH TEST STUDY GUIDE 2025/2026
ACCURATE QUESTIONS AND CORRECT
DETAILED ANSWERS WITH RATIONALES ||
100% GUARANTEED PASS NEWEST
VERSION
A return line from a burner or a pump back to a supply tank shall have no valves
or obstructions except for what? - ANSWER A hard seat or ball valve with the
handle removed
An auxiliary tank shall be provided with an overflow pipe that drains where? -
ANSWER To the top of the supply tank
Vent pipes from more than one tank shall be permitted to be manifolded and
connected into one outlet pipe. True or False? - ANSWER True
What size shall the outlet pipe be of a joint vent manifold - ANSWER At least
one pipe size bigger than the largest individual vent pipe
, In no case shall the point of connection between two or more vent pipes be lower
than the top of the fill pipe opening. True or False? - ANSWER True
Pressure testing fuel supply lines should last for no less than how many minutes?
And what gauge pressure should be used? - ANSWER At least 10 minutes
No less than 5 but no more than 10
How long shall vacuum testing for leaks be held for how long? With how deep of
a vacuum? - ANSWER 30 minutes
20 in
The capacity of a single above ground tank or the aggregate capacity of two or
more above ground tanks shall not exceed how many gallons? -
ANSWER 20,000
Installation of oil-burning boilers with inputs above 12,500,000 BTU's shall meet
what NFPA - ANSWER NFPA 85
Oil burners other than oil stoves with integral tanks shall be provided with what? -
ANSWER A way to manually stop oil flow
A down flow furnace shall be automatically operated and equipped with an
approved temp control that will limit outlet air to what temp? - ANSWER 200
,A duct furnace shall have what clearance to walls, ceilings, and floors of
combustible materials? - ANSWER 6 inches
A duct furnace flue pipe shall be installed to provide a clearance to combustibles
of how many inches? - ANSWER 18 inches
A floor furnace shall be placed not closer than how many inches to the nearest
wall? And shall be placed so that a door, drapery, or similar object cannot be nearer
than how many inches? - ANSWER 6 inches
12 inches
Wall-registered models shall not be placed closer than how many inches to a
corner? - ANSWER 6 inches
How far from combustibles shall a floor furnace chimney connector be? -
ANSWER 9 inches
Rooms containing medium heat appliances shall be provided with what? -
ANSWER Ventilation
High heat appliances shall be installed with clearances to combustibles of not less
than how many feet at the side and rear? Above? And front? - ANSWER 10 feet
15 feet
30 feet
, A miscellaneous air heater shall be of a type designed to discharge air at a temp
not to exceed what? - ANSWER 250
For rooftop units, how far back from the edge of the roof should the appliance be?
- ANSWER 6 feet
What voltage and type of receptacle outlet should be provided adjacent to the
equipment? - ANSWER 120 volt AC grounding
Flash point of No.1 and No. 2 oil is what? - ANSWER 100
What is the ignition point of No.2 heating oil is what? - ANSWER 500
What is the pour point of No.2 heating oil? - ANSWER 17
What is the minimum oil pump pressure - ANSWER 100 PSI
What does NFPA limit shaft seal pressure to? - ANSWER 3 PSI
What temperature should fusible links melt at? - ANSWER 165
What is the overfire draft reading? - ANSWER -.02 (or manufacturer's specs)
What is a breach draft? - ANSWER -0.3 to -0.7
