TSSA G2 STUDY QUIZ
On a pilot what causes a lazy yellow flame? - Correct Answers -Dirty lint screen
Primary air opening
Orifice too big
Main functions of a gas regulator? - Correct Answers -Reduce and maintain
downstream pressure.Pressure to appliance can be adjusted.Smooth and even flow.
What does the measuring element do? - Correct Answers -Measures downstream
pressure.
What is the restricting element? - Correct Answers -Increases or decreases gas flow
Loading element does what? - Correct Answers -set operating pressure.
What is the closing force in a regulator? - Correct Answers -The downstream outlet gas
pressure
reduced noise & vibration - Correct Answers -flexible duct connector is used to
1in - Correct Answers -minimum clearance to combustible from top of the plenum on
FWAW
Inshot burners - Correct Answers -used on conversion burners
Gross stack temperature - Correct Answers -the flue gas temperature upstream of the
draft hood
BW vents - Correct Answers -_____ used when the vent of a wall furnace will be
concealed in a portion of a wall
Direct vent - Correct Answers -Room heaters installed in the bathroom must be _____
Creeping regulators - Correct Answers -______ is the result of gas passing at the
regulator valve seat
, What is the function of a regulator vent? - Correct Answers -Allow gas to escape in case
of diaphragm rupture or downstream over pressure
At the leak limiting orifice how much gas is allowed to leak in a one hour period? -
Correct Answers -1 cu ft per hour.
Surge limiting valve are used where? - Correct Answers -Applications where regulators
are required to be slow opening.
Where is the service regulator located?And used to do what? - Correct Answers -At the
end of the utility's pipeline. It's used to reduce supply pressure to the building pressure.
Appliance regulators serve what purpose? - Correct Answers -The reduce the building
pressure to the manifold pressure on the appliance.
What is the system regulator?And what pressures does it bring it down to? - Correct
Answers -The regulator between the service regulator and the appliance regulator.From
125-5 psig
What does a first stage regulator do, and brings it down to what pressure? - Correct
Answers -It reduces cylinder pressure down to supply line pressure.Reduces pressure
from 250-375 psig down to 10 psig.
Second stage regulator does what? And brings it down to what pressures? - Correct
Answers -It reduces supply line pressure to building pressure.Pressure reduced from 10
psig down to 11" w.c.
Corrugated metal gas connector, connected to a range must not exceed - Correct
Answers -6ft
Black iron pipe 2 1/2 NPS at 150ft long shall be pressure tested to? - Correct Answers -
1.5 times the maximum operation pressure for 180 minutes
A manual shut off valve shall be installed - Correct Answers -In either drop of riser of a
residential appliance
Buried piping or tubing shall be - Correct Answers -Only copper type L coated, Type G
coated, Type K uncoated
Pressure drop - Correct Answers -The difference in working pressure at the gas meter,
and the working pressure at the appliance regulator
Fittings used of steel piping may be made from? - Correct Answers -Malleable iron and
steel
The equivalent length of a 2 1/2 forged tee is? - Correct Answers -9.25ft
On a pilot what causes a lazy yellow flame? - Correct Answers -Dirty lint screen
Primary air opening
Orifice too big
Main functions of a gas regulator? - Correct Answers -Reduce and maintain
downstream pressure.Pressure to appliance can be adjusted.Smooth and even flow.
What does the measuring element do? - Correct Answers -Measures downstream
pressure.
What is the restricting element? - Correct Answers -Increases or decreases gas flow
Loading element does what? - Correct Answers -set operating pressure.
What is the closing force in a regulator? - Correct Answers -The downstream outlet gas
pressure
reduced noise & vibration - Correct Answers -flexible duct connector is used to
1in - Correct Answers -minimum clearance to combustible from top of the plenum on
FWAW
Inshot burners - Correct Answers -used on conversion burners
Gross stack temperature - Correct Answers -the flue gas temperature upstream of the
draft hood
BW vents - Correct Answers -_____ used when the vent of a wall furnace will be
concealed in a portion of a wall
Direct vent - Correct Answers -Room heaters installed in the bathroom must be _____
Creeping regulators - Correct Answers -______ is the result of gas passing at the
regulator valve seat
, What is the function of a regulator vent? - Correct Answers -Allow gas to escape in case
of diaphragm rupture or downstream over pressure
At the leak limiting orifice how much gas is allowed to leak in a one hour period? -
Correct Answers -1 cu ft per hour.
Surge limiting valve are used where? - Correct Answers -Applications where regulators
are required to be slow opening.
Where is the service regulator located?And used to do what? - Correct Answers -At the
end of the utility's pipeline. It's used to reduce supply pressure to the building pressure.
Appliance regulators serve what purpose? - Correct Answers -The reduce the building
pressure to the manifold pressure on the appliance.
What is the system regulator?And what pressures does it bring it down to? - Correct
Answers -The regulator between the service regulator and the appliance regulator.From
125-5 psig
What does a first stage regulator do, and brings it down to what pressure? - Correct
Answers -It reduces cylinder pressure down to supply line pressure.Reduces pressure
from 250-375 psig down to 10 psig.
Second stage regulator does what? And brings it down to what pressures? - Correct
Answers -It reduces supply line pressure to building pressure.Pressure reduced from 10
psig down to 11" w.c.
Corrugated metal gas connector, connected to a range must not exceed - Correct
Answers -6ft
Black iron pipe 2 1/2 NPS at 150ft long shall be pressure tested to? - Correct Answers -
1.5 times the maximum operation pressure for 180 minutes
A manual shut off valve shall be installed - Correct Answers -In either drop of riser of a
residential appliance
Buried piping or tubing shall be - Correct Answers -Only copper type L coated, Type G
coated, Type K uncoated
Pressure drop - Correct Answers -The difference in working pressure at the gas meter,
and the working pressure at the appliance regulator
Fittings used of steel piping may be made from? - Correct Answers -Malleable iron and
steel
The equivalent length of a 2 1/2 forged tee is? - Correct Answers -9.25ft
