& DETAILED ANSWERS PASSED
ALREADY GRADED A+
Air Heater. - CORRECT ANSWER . An indirect-fired appliance intended to supply
heated air for space heating and other purposes, but not intended for permanent
installation.
Air pressure switch . - CORRECT ANSWER An electrical switch designed to prove that
the proper draft has been established by the power venter or burner and allows the
burner to operate. If the power venter or burner is not performing so as to satisfy the
operating requirements of the equipment for safe performance, the switch will de-
energize the burner control circuit preventing the burner from operating.
Anti-flooding Device - CORRECT ANSWER . A primary safety control that causes the
flow of fuel to be shut off upon a rise in fuel level or upon receiving excess fuel, and
which operates before the hazardous discharge of fuel can occur
Appliances; industrial - CORRECT ANSWER (a) Low-Heat Industrial Appliance. An
industrial appliance such as a commercial cooking range, pressing machine boiler at
any pressure, bake oven, candy furnace, stereotype furnace, drying and curing
appliance, and other process appliances in which materials are heated or melted at
temperatures (excluding flue-gas temperatures) not exceeding 600°F (316°C).
Appliances otherwise classed as medium-heat appliances may be considered as low-
heat appliances if not larger than 100 cubic feet (2.8 m 3 ) in size excluding any burner
equipment and blower compartment
(b) Medium-Heat Industrial Appliance - CORRECT ANSWER (b) An industrial
appliance such as an annealing furnace (glass or metal), charcoal furnace, galvanizing
furnace, gas producer, commercial or industrial incinerator, and steam boiler operating
at over 50 psig (345 kPa) pressure when such appliance is larger than 100 cubic feet
(2.8 m 3 ) in size, and other furnaces classified as medium-heat appliances in
accordance with recognized good practice
c) High-Heat Industrial Appliance. - CORRECT ANSWER c. An industrial appliance
such as billet and bloom furnace, blast furnace, brass melter, cupola, glass furnace,
open-hearth furnace, and ceramic kiln and vitreous enamelizing oven (ferrous metals)
when such appliances are larger than 100 cubic feet (2.8 m 3 ) in size, and other
furnaces classified as high-heat appliances in accordance with recognized good
practice
, Application Permit/Certificate of Completion. - CORRECT ANSWER A standard form
issued for use in all jurisdictions
throughout the Commonwealth
Approved - CORRECT ANSWER . Unless otherwise indicated, listed or approved by a
nationally recognized testing
laboratory
Authority Having Jurisdiction. - CORRECT ANSWER . The state fire marshal or his
designee
Boiler. - CORRECT ANSWER . A closed vessel in which water is heated, steam is
generated, steam is superheated, or any combination thereof, by the application of heat
from combustible fuels in a self-contained or attached furnace.
Boiler, High Pressure). - CORRECT ANSWER . A boiler for generating steam at
pressures in excess of 15 psi (103 kPa), or for heating water to a temperature in excess
of 250°F (121°C) or at a pressure in excess of 160 psi (1103 kPa).
Boiler, Hot Water Supply. - CORRECT ANSWER A low-pressure hot water boiler
having a volume exceeding 120 gallons (454 L), or a heat input exceeding 200,000 Btu
per hour (58.6 kw) or an operating temperature exceeding 200°F (93°C) that provides
hot water to be used externally to itself.
Boiler, Low Pressure - CORRECT ANSWER A boiler for generating steam at pressures
not in excess of 15 psig (103 kPa) or for furnishing water at a temperature not in excess
of 250°F (121°C) at pressures not in excess of 160 psig (1103 kPa).
Burner, Automatically Ignited - CORRECT ANSWER A burner equipped so that main
burner fuel may be turned on and
ignited automatically
Burner, Manually Ignited. - CORRECT ANSWER . A burner equipped so that main
burner fuel is turned on only by hand and ignited under supervision.
Burner, Mechanical Draft Type. - CORRECT ANSWER A burner that includes a power-
driven fan, blower, or other mechanism as the primary means for supplying the air for
combustion.
Burner, Natural Draft Type. - CORRECT ANSWER A burner that depends primarily
upon the natural draft created in the chimney or venting system to induce the air
required for combustion into the burner.