Glossary - Dunkirk DCBF-100 Manual

• APPLIANCE - Device to convert gas into energy;
term includes any component, control, wiring, piping
or tubing required to be part of the device.
• ANSI - American National Standards Institute, Inc.
over see's creation and maintenance of voluntary
consensus standards, including ANSI Z21.13/CSA 4.9:
Gas-Fired Low Pressure Steam and Hot Water Boilers.
• ASME - Association of Mechanical Engineers
Establishes rules of safety governing the design,
fabrication, and inspection of boilers and pressure
vessels, determining the MAWP of such vessels.
• ASTM - American Society for Testing and Materials.
ASTM International is one of largest voluntary
standards development organizations in world trusted
source for technical standards for materials, products,
systems, and services. Known for their high technical
quality and market relevancy, ASTM International
standards have important role in information
infrastructure that guides design, manufacturing and
trade in the global economy.
• AUTHORITY HAVING JURISDICTION - Individual
or organization adopting and enforcing codes,
rules, and by-laws governing various concerns of
community. Commonly referred to as "final authority"
for any matters relating to LIFE SAFETY and BUILDING
CONSTRUCTION within a community.
• BOILER - Appliance intended to supply hot liquid for
space-heating, processing or power purposes.
• BTU - Abbreviation for British Thermal Unit. Quantity
of heat required to raise temperature of 1 pound of
water 1°F.
• BURNER - Device for final conveyance of gas or
mixture of gas and air, to combustion zone.
• CALIBRATE - Make fine adjustments or divide into
marked intervals for optimal measuring.
• COAXIAL VENTING Sharing the same center.
• COMBUSTION - Rapid oxidation of fuel gases
accompanied by production of heat or heat and light.
Complete combustion of fuel is possible only in
presence of adequate supply of Oxygen.
• COMBUSTIBLE MATERIAL - Materials made of or
surfaced with wood, compressed paper, plant fibers,
or other materials capable of being ignited and
burned. Such material shall be considered combustible
even though flame-proofed, fire-retardant treated, or
plastered.
• COMBUSTION AIR - Air that is drawn into an
appliance to mix with fuel and support combustion.

14 - GLOSSARY

• CONDENSATE - Liquid separated from flue gas due to
reduction in temperature.
• DIRECT VENT BOILER - Boiler constructed and
installed so all combustion air is derived directly
from outdoors and all vent gases are discharged to
outdoors.
• DOMESTIC - Relating to household usage as opposed
to commercial usage.
• DOMESTIC WATER - Potable drinking water - tap
water.
• DRAFT - Pressure difference causes gases or air to
flow through a chimney, vent, flue or appliance.
• FLA - Full load amps.
• FLUE - Enclosed passageway for conveying
combustion gases.
• FLUE GASES - Products of combustion plus excess
air in appliance flues or heat exchanger.
• GAS SUPPLIER - Party that sells commodity of
Natural Gas (Gas A) or LPG (Gas E).
• HIGH-VOLTAGE - Circuit involving potential of not
more than 600 volts and having circuit characteristics
in excess of those of low-voltage circuit.
• HYSTERESIS (DIFFERENTIAL) -difference
between the temperature at which the thermostat
switches off - and the temperature at which it
switches on again.
• IGNITER - Device utilizing electrical energy to ignite
gas at main burner.
• LEAK CHECK - Operation performed on gas piping
system to verify system does not leak.
• LICENSED QUALIFIED INSTALLER / SERVICE
TECHNICIAN - any individual, firm, corporation
or company that either directly or through a
representative is engaged in the installation,
replacement, repair or servicing of gas piping, venting
systems, appliances, components, accessories, or
equipment, and whose representative is experienced
and trained, in such work and has complied with the
requirements of the authority having jurisdiction.
• LOW WATER CUTOFF - Device constructed to
automatically cut off fuel supply when surface of water
in boiler falls to lowest safe water level.
• LOW-VOLTAGE - Circuit involving potential of not
more than 30 volts.
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