Dunkirk DCBF-100 Manual page 73

• METRIC GAS METERS
Natural Gas
127,116 x
MBH =
Seconds
For example: Gas Meter measures 0.1 cubic Meters in
100 seconds
127,116 x 0.1
MBH =
100
Propane Gas (LP)
383,482 x
MBH =
Seconds
• NATIONAL BOARD OF BOILER AND PRESSURE
VESSEL INSPECTORS - Group composed of boiler
and pressure vessel inspectors representing states,
cities and provinces enforcing pressure equipment
laws and regulations.
• PRESSURE TEST - Operation performed to verify gas
tight integrity of gas piping following its installation or
modification.
• PURGE - To free gas conduit of air or gas, or mixture
of gas and air.
• PURGE TIME - Period of time intended to allow for
dissipation of any unburned gas or residual products
of combustion.
• QUALIFIED AGENCY - Any individual, firm,
corporation, or company engaged in and responsible
for:
• Installation, testing, or replacement of gas piping,
or connection, installation, testing, repair or
servicing of appliances and equipment.
• Experienced in such work.
• Familiar with all precautions required.
• Complies with all requirements of authority
having jurisdiction.
• SAFETY RELIEF VALVE - Valve designed to relieve
pressure in hot water supply system when pressure
exceeds pressure capability of equipment.
• SAFETY SHUTOFF DEVICE - Device that will shut
off gas supply to controlled burner in event source of
ignition fails.
• SEDIMENT TRAP - Gas piping arrangement designed
to collect any liquid or solid contaminant before
reaching gas valve.
• SERVICE -Supply, installation, or maintenance of
goods carried out by a Qualified Installer / Service
Technician.
cu meters
= 127 MBH
cu meters
14 - GLOSSARY
• TWO PIPE SYSTEM - Type of venting that allows
for exhaust flue and intake air piping to be separated
from each other. Fresh air may be drawn in at a
different area from where flue terminal is located.
• VENT - Passageway used to convey flue gases from
appliance vent connector to outdoors.
• VENTING SYSTEM - Continuous open passageway
from of appliance vent connector to outdoors for
purpose of removing flue or vent gases.
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