MAINE GAS EXAM 2026-2027 NEWEST
QUESTIONS AND CORRECT ANSWERS |
A+ GRADE VERIFIED ANSWERS
What is the minimum size dimension of outdoor
combustion air openings? Correct answer 3"
What is the maximum operating pressure for a low
pressure steam boiler? Correct answer 15 psi
What is the maximum distance between horizontal
supports for half inch OD copper tubing used for gas
supply piping? Correct answer 4 feet
What type of valve shall be used at the point of connection
when a gas system has supplementary standby gas
connected downstream of the meter? Correct answer
Three-way valve
When an appliance is installed in an attic space, what
maximum distance from the attic access can the appliance
be installed when measured along the centerline? Correct
answer 20 feet
What is the maximum BTU per hour input rating for a
listed unvented wall-mounted room heater equipped with
an oxygen depletion safety shut off system being installed
in a bedroom? Correct answer 10,000 BTU/hr
,What is the minimum horizontal clearance from
combustible material for an unlisted outdoor open flame
illuminating appliance with a flame height of 24 inches
above the burner head? Correct answer 3 feet
What minimum amount of slope per foot should a vent
connector have upward toward the chimney? Correct
answer 1/4"
Given: A manufacturing plant is replacing their boiler
which was used for heating the plant only. The new boiler
will supply steam for heating plus be used for some
manufacturing processes. The new boiler will be low
pressure and use undiluted propane gas for the fuel. The
boiler room is located 156 feet away from the gas meter,
which supplies gas at 11.0 inches of water column inlet
pressure with a pressure drop of 0.5 inches water column
with a specific gravity of 1.50.
What size corrugated stainless steel tubing should be
used to supply the 820,000 BTU of gas per hour boiler?
Correct answer 60 EHD
Recirculating direct-fired industrial air heaters shall receive
outside ventilation air into the space at a rate of... Correct
answer Requirements listed on the heater's rating plate.
What is the MAXIMUM length of an indoor nonmetallic gas
connector hose for gas equipment that requires mobility?
Correct answer 6 feet
, What is the minimum required clearance for combustible
materials from the front of a central heating steam boiler
that operates at less than 15 psi? Correct answer 18"
An air conditioning system controls all of the following
EXCEPT Correct answer Odor
A house has a 19 foot tall chimney with a total of 185,000
BTU input from one Category I natural draft vented
appliance that has a single-wall Metal connector with a 5
foot lateral. What size Type B chimney is needed? Correct
answer 6"
A building with roof-mounted, gas-fired equipment shall
have a permanent inside means of access when the
height of the building is more than.. Correct answer 15 feet
in height
Minimum clearance for a draft hood relief opening from
any surface other than what draft hood is connected to...
Correct answer 6"
When the gas supply is delivered to a building at 2 psi, an
over pressure protection device shall be installed to
protect the appliances designed to operate at a pressure
of... Correct answer 14in. w.c. Or less
LP-Gas systems designed to operate in very cold
conditions shall mix the propane with butane to prevent
the LP-Gas vapor from condensing back to a liquid. At
QUESTIONS AND CORRECT ANSWERS |
A+ GRADE VERIFIED ANSWERS
What is the minimum size dimension of outdoor
combustion air openings? Correct answer 3"
What is the maximum operating pressure for a low
pressure steam boiler? Correct answer 15 psi
What is the maximum distance between horizontal
supports for half inch OD copper tubing used for gas
supply piping? Correct answer 4 feet
What type of valve shall be used at the point of connection
when a gas system has supplementary standby gas
connected downstream of the meter? Correct answer
Three-way valve
When an appliance is installed in an attic space, what
maximum distance from the attic access can the appliance
be installed when measured along the centerline? Correct
answer 20 feet
What is the maximum BTU per hour input rating for a
listed unvented wall-mounted room heater equipped with
an oxygen depletion safety shut off system being installed
in a bedroom? Correct answer 10,000 BTU/hr
,What is the minimum horizontal clearance from
combustible material for an unlisted outdoor open flame
illuminating appliance with a flame height of 24 inches
above the burner head? Correct answer 3 feet
What minimum amount of slope per foot should a vent
connector have upward toward the chimney? Correct
answer 1/4"
Given: A manufacturing plant is replacing their boiler
which was used for heating the plant only. The new boiler
will supply steam for heating plus be used for some
manufacturing processes. The new boiler will be low
pressure and use undiluted propane gas for the fuel. The
boiler room is located 156 feet away from the gas meter,
which supplies gas at 11.0 inches of water column inlet
pressure with a pressure drop of 0.5 inches water column
with a specific gravity of 1.50.
What size corrugated stainless steel tubing should be
used to supply the 820,000 BTU of gas per hour boiler?
Correct answer 60 EHD
Recirculating direct-fired industrial air heaters shall receive
outside ventilation air into the space at a rate of... Correct
answer Requirements listed on the heater's rating plate.
What is the MAXIMUM length of an indoor nonmetallic gas
connector hose for gas equipment that requires mobility?
Correct answer 6 feet
, What is the minimum required clearance for combustible
materials from the front of a central heating steam boiler
that operates at less than 15 psi? Correct answer 18"
An air conditioning system controls all of the following
EXCEPT Correct answer Odor
A house has a 19 foot tall chimney with a total of 185,000
BTU input from one Category I natural draft vented
appliance that has a single-wall Metal connector with a 5
foot lateral. What size Type B chimney is needed? Correct
answer 6"
A building with roof-mounted, gas-fired equipment shall
have a permanent inside means of access when the
height of the building is more than.. Correct answer 15 feet
in height
Minimum clearance for a draft hood relief opening from
any surface other than what draft hood is connected to...
Correct answer 6"
When the gas supply is delivered to a building at 2 psi, an
over pressure protection device shall be installed to
protect the appliances designed to operate at a pressure
of... Correct answer 14in. w.c. Or less
LP-Gas systems designed to operate in very cold
conditions shall mix the propane with butane to prevent
the LP-Gas vapor from condensing back to a liquid. At
