TSSA G3 Exam Preparation Questions and
Correct Answers
who is authorized to work on a liquid propane system?
an LP fitter
Name 3 organizations authorized to certify appliances in Ontario.
CSA,CGA,ETL
List 5 steps taken when rescuing a victim of electrical shock.
-Don't touch energized victim
-Free victim of electrical contact
-Apply C.P.R or artificial respiration
-Have someone call for help
-Continue resuscitation attempts
In a conventional furnace, how is the heat transferred from the heat exchanger to the
return air?
Return air is heated through conduction as air molecules touch the outside of heat
exchanger but the warm supply air is heating up the house by convection
What device is normally used to check the manifold gas pressure of a newly converted
appliance?
manometer
total air supply volume
1000 btuh / 30 ft^3 of total air supply
Excess Air
, Air supplied to the burner above the theoretical amount required to burn the fuel to ensure
complete combustion.
pressure at sea level
14.73 psia
Methane
CH4
Propane
C3H8
Specific Gravity of propane vapour
1.52
Specific Gravity of natural gas vapour
0.55
Methane
main component of natural gas
limit of flammability for propane
2.4-9.5%
limit of flammability for natural gas
4-15%
natural gas and propane max flame temp
3600
Correct Answers
who is authorized to work on a liquid propane system?
an LP fitter
Name 3 organizations authorized to certify appliances in Ontario.
CSA,CGA,ETL
List 5 steps taken when rescuing a victim of electrical shock.
-Don't touch energized victim
-Free victim of electrical contact
-Apply C.P.R or artificial respiration
-Have someone call for help
-Continue resuscitation attempts
In a conventional furnace, how is the heat transferred from the heat exchanger to the
return air?
Return air is heated through conduction as air molecules touch the outside of heat
exchanger but the warm supply air is heating up the house by convection
What device is normally used to check the manifold gas pressure of a newly converted
appliance?
manometer
total air supply volume
1000 btuh / 30 ft^3 of total air supply
Excess Air
, Air supplied to the burner above the theoretical amount required to burn the fuel to ensure
complete combustion.
pressure at sea level
14.73 psia
Methane
CH4
Propane
C3H8
Specific Gravity of propane vapour
1.52
Specific Gravity of natural gas vapour
0.55
Methane
main component of natural gas
limit of flammability for propane
2.4-9.5%
limit of flammability for natural gas
4-15%
natural gas and propane max flame temp
3600
