Questar Gas - Good Practices for Gas Piping and Appliance ...

a. Power Burner: A burner in which either gas, air or both are
supplied at pressures exceeding, for gas, the line pressure, and
for air, atmospheric pressure; this added pressure being applied
at the burner.
b. Pressure Burner: A burner which is supplied with an air-gas
mixture under pressure (usually from 0.5 in. to 14 in. of water
column {w.c.} and occasionally higher).
c. Primary Air Burner (Bunsen): The air introduced into a burner
and which mixes with the gas before it reaches the port or ports.
d. Secondary Air Burner (Luminous or Yellow Flame): A burner in
which secondary air is depended on for the combustion of the
gas.
CSST - Corrugated Stainless Steel Tubing - Used as an integral
gas piping system.
CENTRAL HEATING GAS APPLIANCE - A gas appliance
normally used as the primary means of heating premises. Ordinarily
this includes gas boilers, warm air furnaces, and floor furnaces;
but does not include unit heaters, room or space heaters, nor
industrial gas boilers.
CHIMNEY, TYPE “A” - Chimneys or vents of masonry reinforced
concrete, iron smoke stacks or listed factory all-fuel chimneys.
CIRCUIT -
a. Parallel: One in which the current has two or more paths to
follow.
b. Series: One where the current has only one path to follow.
COMBUSTIBLE MATERIAL: Pertaining to materials adjacent
to or in contact with heat-producing appliance vent connectors,
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