TEXAS LP GAS EXAM STUDY GUIDE
Appliance - Answers -Any device that utilizes gas as a fuel or raw material to produce
light, heat, power, refrigeration, or air conditioning.
Appliance Regulator - Answers -A pressure regulator for controlling pressure to the
appliance manifold.
Appliance Shut-off Valve - Answers -A valve located in the piping system, used to shut
off individual equipment.
BTU - Answers -British Thermal Unit; the quantity of heat required to raise the
temperature of 1 pound of water by 1 degree F.
Controls - Answers -Devices designated to regulate the gas, air, water, or electrical
supply to an appliance. These may be manual or automatic.
Direct Vent Appliances - Answers -Appliances that are constructed and installed so that
all air for combustion is derived directly from the outdoors and all flue gases are
discharged to the outdoors.
Flue Gases - Answers -Products of combustion plus excess air in appliance flues or
heat exchangers.
Labeled - Answers -Equipment or materials to which has been attached a label, symbol,
or other identifying mark of an organization that is acceptable to the authority having
jurisdiction and concerned with product evaluation, that maintains periodic inspection of
production of labeled equipment or materials, and by whose labeling the manufacturer
indicates compliance with appropriate standards or performance in a specified manner.
Leak Check - Answers -An operation performed on a complete gas piping system, the
connections, appliances, and equipment to verify that the system does not leak.
Listed - Answers -Equipment, materials, or services included in a list published by an
organization that is acceptable to the authority having jurisdiction and concerned with
evaluation of products or services, that maintains periodic inspection of production of
listed equipment or materials or periodic evaluation of services, and whose listing states
that either the equipment, material, or service meets the appropriate designated
standards or has been tested and found suitable for a specified purpose.
Orifice - Answers -The opening in a cap, spud, or other device whereby the flow of gas
is limited and through which the gas is discharged to the burner.
Pipe - Answers -Rigid conduit of iron, steel, copper, brass, aluminum, or plastic.
, Piping System - Answers -All piping, valves, and fittings from the outlet of the point of
delivery from the supplier to the outlets of the equipment shutoff valves.
Pressure Test - Answers -An operation performed to verify the gastight integrity of gas
piping following its installation of modification.
Category 1 Vented Appliance - Answers -An appliance that operates with a non-positive
vent static pressure ad with a vent gas temperature that avoids excessive condensate
production in the vents.
Category 2 Vented Appliance - Answers -An appliance that operates with a non-positive
vent static pressure and with a vent gas temperature that may cause excessive
condensate production in the vent.
Category 3 Vented Appliance - Answers -An appliance that operates with a positive vent
static pressure that avoids excessive condensate production in the vent.
Category 4 Vented Appliance - Answers -An appliance that operates with a positive vent
static pressure and with a vent gas temperature that may cause excessive condensate
production in the vent.
Quick-disconnect Device - Answers -A hand-operated device that provides a means for
connecting and disconnecting an appliance or an appliance connector to a gas supply
that is equipped with an automatic means to shut off the gas supply when the device is
disconnected.
Regulator Vent - Answers -The opening in the atmospheric side of the regulator housing
permitting the in and out movement of air to compensate for the movement of the
regulator diaphragm.
Safety Shutoff Device - Answers -A device that will shut off the gas supply to the
controlled burners in the event the source of ignition fails. This device can interrupt the
flow of gas to main burners only or to pilot and main burners under its supervision.
Type 1 Clothes Dryer - Answers -Primarily used in family living environment. May or
may not be coin-operated for public use.
Type 2 Clothes Dryer - Answers -Used in business with direct intercourse of the function
of the public. May or may not be operated by public or hired attendant. May or may not
be coin-operated.
Type B Gas Vent - Answers -A vent for venting listed gas appliances with draft hoods
and other Category 1 appliances listed for use with Type B gas vents.
Type L Gas Vent - Answers -A vent for venting appliances listed for use with Type L
vents and appliances listed for use with Type B gas vents.
Appliance - Answers -Any device that utilizes gas as a fuel or raw material to produce
light, heat, power, refrigeration, or air conditioning.
Appliance Regulator - Answers -A pressure regulator for controlling pressure to the
appliance manifold.
Appliance Shut-off Valve - Answers -A valve located in the piping system, used to shut
off individual equipment.
BTU - Answers -British Thermal Unit; the quantity of heat required to raise the
temperature of 1 pound of water by 1 degree F.
Controls - Answers -Devices designated to regulate the gas, air, water, or electrical
supply to an appliance. These may be manual or automatic.
Direct Vent Appliances - Answers -Appliances that are constructed and installed so that
all air for combustion is derived directly from the outdoors and all flue gases are
discharged to the outdoors.
Flue Gases - Answers -Products of combustion plus excess air in appliance flues or
heat exchangers.
Labeled - Answers -Equipment or materials to which has been attached a label, symbol,
or other identifying mark of an organization that is acceptable to the authority having
jurisdiction and concerned with product evaluation, that maintains periodic inspection of
production of labeled equipment or materials, and by whose labeling the manufacturer
indicates compliance with appropriate standards or performance in a specified manner.
Leak Check - Answers -An operation performed on a complete gas piping system, the
connections, appliances, and equipment to verify that the system does not leak.
Listed - Answers -Equipment, materials, or services included in a list published by an
organization that is acceptable to the authority having jurisdiction and concerned with
evaluation of products or services, that maintains periodic inspection of production of
listed equipment or materials or periodic evaluation of services, and whose listing states
that either the equipment, material, or service meets the appropriate designated
standards or has been tested and found suitable for a specified purpose.
Orifice - Answers -The opening in a cap, spud, or other device whereby the flow of gas
is limited and through which the gas is discharged to the burner.
Pipe - Answers -Rigid conduit of iron, steel, copper, brass, aluminum, or plastic.
, Piping System - Answers -All piping, valves, and fittings from the outlet of the point of
delivery from the supplier to the outlets of the equipment shutoff valves.
Pressure Test - Answers -An operation performed to verify the gastight integrity of gas
piping following its installation of modification.
Category 1 Vented Appliance - Answers -An appliance that operates with a non-positive
vent static pressure ad with a vent gas temperature that avoids excessive condensate
production in the vents.
Category 2 Vented Appliance - Answers -An appliance that operates with a non-positive
vent static pressure and with a vent gas temperature that may cause excessive
condensate production in the vent.
Category 3 Vented Appliance - Answers -An appliance that operates with a positive vent
static pressure that avoids excessive condensate production in the vent.
Category 4 Vented Appliance - Answers -An appliance that operates with a positive vent
static pressure and with a vent gas temperature that may cause excessive condensate
production in the vent.
Quick-disconnect Device - Answers -A hand-operated device that provides a means for
connecting and disconnecting an appliance or an appliance connector to a gas supply
that is equipped with an automatic means to shut off the gas supply when the device is
disconnected.
Regulator Vent - Answers -The opening in the atmospheric side of the regulator housing
permitting the in and out movement of air to compensate for the movement of the
regulator diaphragm.
Safety Shutoff Device - Answers -A device that will shut off the gas supply to the
controlled burners in the event the source of ignition fails. This device can interrupt the
flow of gas to main burners only or to pilot and main burners under its supervision.
Type 1 Clothes Dryer - Answers -Primarily used in family living environment. May or
may not be coin-operated for public use.
Type 2 Clothes Dryer - Answers -Used in business with direct intercourse of the function
of the public. May or may not be operated by public or hired attendant. May or may not
be coin-operated.
Type B Gas Vent - Answers -A vent for venting listed gas appliances with draft hoods
and other Category 1 appliances listed for use with Type B gas vents.
Type L Gas Vent - Answers -A vent for venting appliances listed for use with Type L
vents and appliances listed for use with Type B gas vents.
