TSSA Practice Questions with Correct Answers and Answers with
Verified Solutions | Latest 2026 Update
Q: Equipment wiring diagram indicates which of the following Supply voltage, fuse
size, type of
Answer:
disconnect switch, factory wiring
Mechanical drawings are used to Give the building address, locate the building on
the site,
location of adjacent structures, piping layout, and show equipment location
A bill of materials is List indicating the materials required to complete an installation
Safety directives and bulletins are issued by whom TSSA
Equipment service bulletins are issued by who The manufacturer
,Q: Gas piping requirements are in section _________ of the B149.I code book 6
Answer:
On a roof with a 12/12 pitch and no obstructions, the minimum vent height for a
natural gas
fired appliance is 4 feet
Venting and air supply requirements are in section _______ of the code book 8
For a piping system supplying an appliance having a rated input under 400,000 btuh,
the main
building line and branch line to the appliance may be purged At a readily accessible
burner
such as the open top burner of a gas range
If a branch line which was used to supply a range in the kitchen of a single family
home is no
longer required how must the line be terminated With a plugged valve, or a plug or
cap
made of material compatible with the material so if the piping or tubing system
How is the longest equivalent length determined for systems operating over 2 psig
Add the
equivalent length in feet of straight pipe for each fitting and valve to the longest pipe
run
Is it necessary to purge each branch supply line in a pipe system Yes
To correct a symptom such as a fluctuating flame, a technician should first: Consult
the
manufacturer's instructions.
Hose used to connect the propane supply to a domestic water heater shall Not be
permitted
The diameter of a drip or dirt pocket shall be equal to the diameter of the piping or
tubing that
it serves or 3 inches
, Q: When can plastic piping be used in indoors Never
Answer:
Propane piping of 200 ft in the length or less operating at a pressure over 2 psig but
not more
than 33 psig shall be tested at minimum of 50 psig for 60 minutes
In the absence of a readily accessible burner, an appliance not equipped with a
continuous pilot
shall be purged in accordance with Annex H of the B149.I code
What would the likely causer be if orange flashed were evident in a gas flame Dust
burning
in the flame
Conduction is The transfer of heat from particle to particle
220-222
The configuration of a Hi Boy forced air gas furnace has Supply air exiting at the top
and
return air entering at the bottom
Infrared and tube heaters transfer heat by radiation
A noisy, lifting, blowing pilot flame is usually the result of Excessively high pilot gas
pressure
Air passing over a heat exchanger is heated by conduction
An orifice for propane appliance with the same input as a natural gas appliance is
Smaller
than the natural gas orifice
Verified Solutions | Latest 2026 Update
Q: Equipment wiring diagram indicates which of the following Supply voltage, fuse
size, type of
Answer:
disconnect switch, factory wiring
Mechanical drawings are used to Give the building address, locate the building on
the site,
location of adjacent structures, piping layout, and show equipment location
A bill of materials is List indicating the materials required to complete an installation
Safety directives and bulletins are issued by whom TSSA
Equipment service bulletins are issued by who The manufacturer
,Q: Gas piping requirements are in section _________ of the B149.I code book 6
Answer:
On a roof with a 12/12 pitch and no obstructions, the minimum vent height for a
natural gas
fired appliance is 4 feet
Venting and air supply requirements are in section _______ of the code book 8
For a piping system supplying an appliance having a rated input under 400,000 btuh,
the main
building line and branch line to the appliance may be purged At a readily accessible
burner
such as the open top burner of a gas range
If a branch line which was used to supply a range in the kitchen of a single family
home is no
longer required how must the line be terminated With a plugged valve, or a plug or
cap
made of material compatible with the material so if the piping or tubing system
How is the longest equivalent length determined for systems operating over 2 psig
Add the
equivalent length in feet of straight pipe for each fitting and valve to the longest pipe
run
Is it necessary to purge each branch supply line in a pipe system Yes
To correct a symptom such as a fluctuating flame, a technician should first: Consult
the
manufacturer's instructions.
Hose used to connect the propane supply to a domestic water heater shall Not be
permitted
The diameter of a drip or dirt pocket shall be equal to the diameter of the piping or
tubing that
it serves or 3 inches
, Q: When can plastic piping be used in indoors Never
Answer:
Propane piping of 200 ft in the length or less operating at a pressure over 2 psig but
not more
than 33 psig shall be tested at minimum of 50 psig for 60 minutes
In the absence of a readily accessible burner, an appliance not equipped with a
continuous pilot
shall be purged in accordance with Annex H of the B149.I code
What would the likely causer be if orange flashed were evident in a gas flame Dust
burning
in the flame
Conduction is The transfer of heat from particle to particle
220-222
The configuration of a Hi Boy forced air gas furnace has Supply air exiting at the top
and
return air entering at the bottom
Infrared and tube heaters transfer heat by radiation
A noisy, lifting, blowing pilot flame is usually the result of Excessively high pilot gas
pressure
Air passing over a heat exchanger is heated by conduction
An orifice for propane appliance with the same input as a natural gas appliance is
Smaller
than the natural gas orifice
