Draft is measured by... inches in water column
Ditterence of pressure INSIDE and OUTSIDE the venting
Definition of Draft
system
Easiest solution to "back puflng" stove? Give it more air
What has the greatest ettect on FLOW? Size of venting system passageway
A masonry chimney is required by what to have a cleanout
if the flue previously vented a solid or liquid fuel appli- NFPA 54 (National Fuel Gas Code)
ance?
High eflciency gas + oil appliances generate a lot of
water vapor, deteriorate a chimney quickly
which can
Info on use and installation of gas appliance draft hoods
National Fuel Gas Code
can be found where?
Category II, III, and IV appliance venting requirements can
in the installation instructions
be found...
slow smoldering fire,
Glazed creosote results from 3 things... too many elbows,
improperly sized vent
The chemical alteration of wood as a result of the applica-
What is "pyrolysis"?
tion of heat
Perfect combustion results in: Only Co2 and water vapor
Tar fog or droplets of liquids condense in the venting
Creosote formation:
system
Residence time length of time smoke remains in the chimney
Magnetic thermometers only display about % of actual
50%
flue temp
Fire risk,
Creosote should be removed because...
corrosive to steel, connectors, and mortar
, CSIA Certification Exam Test Questions and Answers Rated A
Why should flashing be embedded in mortar? prevent leaks
Located between the firebox and flue collar.
Baffle location and purpose?
Purpose is to complete better combustion
What does the barometric draft regulator do? Prevents excessive draft
Smoke chamber height SHALL NOT be greater than the
Inside width
of the fireplace fire chamber.
Combustion needs... Heat, Oxygen, and Fuel
Nominal dimensions can vary by how much? Nominal dimensions vary by 1/2"
What is combustion? The rapid oxidation of fuel producing heat and light.
Parging the smoke chamber improves FLOW by... Reducing turbulence, and eliminating corbeling
Connector dampers should not block greater than %
80%
of the connector when closed.
Fits inline with connector, and is NOT to be used with wood
Heat reclaimer / extractor
burning
What inspection level determines if a wall pass-through is
Level 2
installed properly?
Hearth stove should only be connected to... A properly built masonry fireplace
What problems are created when mortar joints between May create turbulence and increased residence time of
flue tiles are not smoothed? exhaust.
1. adds structural integrity to chimney
2. resists corrosive deposits
3 Positive aspects of Cast-in-Place liners
3. able to support any fuel or appliance when sized prop-
erly
Never pound from above with a weight. (Might block so
What never to do to a blocked passage in a chimney?
bad opening a wall is necessary to remove buildup)
True or false: A flat wire brush is hardest to reverse be-
True
cause of size and thickness of bristles.