Lp installers practice Exam Questions
All Answered Correct.
Where do you file a permit for work to be done in buildings owned or used by the State of
Mass? - Answer State Inspector
When pressure testing a system over 1 million btu , which doesn't apply? - Answer Test 1 hour
for each 200 ' of developed length
When a vent on a regulator, what is the horizontal distance from the discharge of the vent to an
opening located below? - Answer 3 feet
How many cycles do you need to keep continuing education certificates? - Answer 3
On an LP - Gas system, what is considered to be the " Point of Delivery " ? - Answer Outlet of
1st stage
How fast does a spill switch need to work? - Answer 30 seconds
If the firing rate in a combustion chamber exceeds 1,000,000 BTU , but less than 5,000,000 ,
what is required? - Answer 2 shut offs in series, or one with overtravel interlock
When using gas pressure boosters, which of the following apply? - Answer All must meet
product - acceptance requirements The serving gas supplier has provided written authorization
Gas pressure boosters shall be located in well - ventilated spaces, and readily accessible
What percentage of vent height can the length of a single - walled vent connector be ? - Answer
75 %
What percentage of vent height can the length of Type B , double - walled vent connector be ? -
Answer 100 %
What is the max pressure for natural gas in a house? - Answer 14 " WC
, What is the maximum pressure allowed for CSST . - Answer 14 " WC
If the maximum firing rate per combustion chamber is ____ , BTU or greater , gas pressure
supervision provided by listed pressure switches or combination high / low switch , interlocked
to accomplish safety shutdown in event of either high or low pressure . - Answer 1,000,000
Max spacing for support for CSST on a rooftop is every . - Answer Blocks used for Support 48 "
A vacuum is considered to be any pressure that is - Answer Less than atmospheric pressure
(14.7 psi)
If an UG gas line runs under a building , what is required ? - Answer Conduit must terminate
outside building ,Sleeved in same material as pipe Terminate 4 ' above grade
Apprentice plumber , apprentice gas fitter , or MA Lic . LP Installer - Answer Must show license
when asked by the Inspector
What is not an acceptable material for LPG piping - Answer Butylenes
How far above a forced air inlet must a vent be terminated it within 10 ft horizontally ? - Answer
3'
Can you vent into a mechanical vent under a positive pressure ? - Answer no
What is not an acceptable material for LPG piping ? - Answer Galvanized
How far above the floor must you have an opening for make - up air ? - Answer < 12 "
How far can a relief discharge from a rigid LP gas regulator from a Building Opening below
discharge ? - Answer 3'
Which method is not an approved method of connecting pipe ? - Answer Soldered
All Answered Correct.
Where do you file a permit for work to be done in buildings owned or used by the State of
Mass? - Answer State Inspector
When pressure testing a system over 1 million btu , which doesn't apply? - Answer Test 1 hour
for each 200 ' of developed length
When a vent on a regulator, what is the horizontal distance from the discharge of the vent to an
opening located below? - Answer 3 feet
How many cycles do you need to keep continuing education certificates? - Answer 3
On an LP - Gas system, what is considered to be the " Point of Delivery " ? - Answer Outlet of
1st stage
How fast does a spill switch need to work? - Answer 30 seconds
If the firing rate in a combustion chamber exceeds 1,000,000 BTU , but less than 5,000,000 ,
what is required? - Answer 2 shut offs in series, or one with overtravel interlock
When using gas pressure boosters, which of the following apply? - Answer All must meet
product - acceptance requirements The serving gas supplier has provided written authorization
Gas pressure boosters shall be located in well - ventilated spaces, and readily accessible
What percentage of vent height can the length of a single - walled vent connector be ? - Answer
75 %
What percentage of vent height can the length of Type B , double - walled vent connector be ? -
Answer 100 %
What is the max pressure for natural gas in a house? - Answer 14 " WC
, What is the maximum pressure allowed for CSST . - Answer 14 " WC
If the maximum firing rate per combustion chamber is ____ , BTU or greater , gas pressure
supervision provided by listed pressure switches or combination high / low switch , interlocked
to accomplish safety shutdown in event of either high or low pressure . - Answer 1,000,000
Max spacing for support for CSST on a rooftop is every . - Answer Blocks used for Support 48 "
A vacuum is considered to be any pressure that is - Answer Less than atmospheric pressure
(14.7 psi)
If an UG gas line runs under a building , what is required ? - Answer Conduit must terminate
outside building ,Sleeved in same material as pipe Terminate 4 ' above grade
Apprentice plumber , apprentice gas fitter , or MA Lic . LP Installer - Answer Must show license
when asked by the Inspector
What is not an acceptable material for LPG piping - Answer Butylenes
How far above a forced air inlet must a vent be terminated it within 10 ft horizontally ? - Answer
3'
Can you vent into a mechanical vent under a positive pressure ? - Answer no
What is not an acceptable material for LPG piping ? - Answer Galvanized
How far above the floor must you have an opening for make - up air ? - Answer < 12 "
How far can a relief discharge from a rigid LP gas regulator from a Building Opening below
discharge ? - Answer 3'
Which method is not an approved method of connecting pipe ? - Answer Soldered
