2016 Chapter 2 - Definitions Flashcards
1
Q
An absorption refrigeration system that has been factory-assembled and tested prior to its installation.
A
Absorption Unit
2
Q
That which conforms to technical or scientific-base principles, test, or standards that are accepted by the engineering profession.
A
Accepted Engineering Practice
3
Q
A closure device used to cover an opening into a duct, an enclosure, equipment, or an appurtenance. [NFPA 96:3.3.1]
A
Access Panel
4
Q
Where applied to a device, appliance, or equipment, “________” means having access thereto, but which first may require the removal of an access panel, door, or similar obstruction.
A
Accessible
5
Q
Having a direct access without the necessity of removing a panel, door, or similar obstruction.
A
Accessible, Readily
6
Q
Air with low contaminant concentration, low sensory-irritation intensity, and inoffensive odor. [ASHRAE 62.1:5.16.1]
A
Air, Class 1
7
Q
Air with moderate contaminant concentration, mild sensory-irritation intensity, or mildly offensive odors. _______ also includes air that is not necessarily harmful or objectionable but that is inappropriate for transfer or recirculation to spaces used for different purposes.[ASHRAE 62.1:5.16.1]
A
Air, Class 2
8
Q
Air with significant contaminant concentration, significant sensory-irritation intensity, or offensive odor. [ASHRAE 62.1:5.16.1]
A
Air, Class 3
9
Q
Air with highly objectionable fumes or gases or with potentially dangerous particles, bioaerosols, or gases at concentrations high enough to be considered harmful. [ASHRAE 62.1:5.16.1]
A
Air, Class 4
10
Q
Air that has been treated to achieve a desired level of temperature, humidity, or cleanliness.
A
Air, Conditioned
11
Q
Air that enters a draft hood or draft regulator and mixes with the flue gases. [NFPA 54:3.3.2.2]
A
Air, Dilution
12
Q
Air being removed from any space or piece of equipment and conveyed directly to the atmosphere by means of openings or ducts.
A
Air, Exhaust
13
Q
Air that is provided to replace air being exhausted.
A
Air, Makeup
14
Q
Air from outside the building intentionally conveyed by openings or ducts to rooms or to conditioning equipment.
A
Air, Outside
15
Q
Air from the conditioned area that is returned to the conditioning equipment for reconditioning.
A
Air, Return
16
Q
Air being conveyed to a conditioned area through ducts or plenums from a heat exchanger of a heating, cooling, absorption, or evaporative cooling system.
A
Air, Supply
17
Q
A blower or fan used for the purpose of distributing supply air to a room, space, or area.
A
Air-Handling Unit (AHU)
18
Q
An opening in a building’s envelope whose purpose is to allow outside air to be drawn into the structure to replace inside air that is removed by exhaust systems or to improve the quality of the inside air by providing a source of air having a lower concentration of odors, suspended particles, or heating content. [NFPA 96:3.3.2]
A
Air Intakes
19
Q
A system designed to provide heating, cooling, ventilation in which one or more air-handling units are used to supply air to a common space or are drawing air from a common plenum or space.
A
Air-Moving System
20
Q
Equipment and devices used for the purpose of cleaning air passing through them or by them in such a manner as to reduce or remove the impurities contained therein. [NFPA 96:3.3.3]
A
Air Pollution Control Devices
21
Q
Air being exhausted directly from a building or a return duct system which is not contaminated by odors or other contaminants and could otherwise be used as return air if not exhausted from the building.
A
Air, Relief. [OSHPD 1, 2, 3 & 4]
22
Q
An assembly of steel-cased plastic pipe used to make the transition between plastic piping installed underground and metallic piping installed aboveground. [NFPA 54:3.3.5]
A
Appliance
23
Q
An appliance equipped with an integral mechanical means to either draw or force products of combustion through the combustion chamber or heat exchanger. [NFPA 54:3.3.6.4]
A
Appliance. Fan-Assisted Combustion
24
Q
A fuel-burning appliance that produces a continuous flue gas temperature, at the point of entrance to the flue, of more than 1000°F and less than 2000°F.
A
Appliance, Medium-Heat
25
A fuel-burning appliance that produces a continuous flue gas temperature, at the point of entrance to the flue, of not more than 1000°F.
Appliance, Low Heat
26
The minimum vent area/diameter permissible for Category I appliances to maintain a nonpositive vent static pressure where tested in accordance with nationally recognized standards [NFPA 54:3.3.7]
Appliance Categorized Vent Diameter/Area
27
The opening or openings in a cooking device where vapors, combustion gases, or both leave the cooking device. [NFPA 96:3.3.4] There might or might not be ductwork attached to this opening.
Appliance Flue Outlet
28
An assembly of listed semi-rigid or flexible tubing and fittings to carry fuel between a fuel-piping outlet and a fuel-burning appliance.
Appliance Fuel Connector
29
Acceptable to the Authority Having Jurisdiction
Approved
30
An organization primarily established for purposes of testing to approved standards and approved by the Authority Having Jurisdiction.
Approved Testing Agency
31
An accessory or a subordinate part that enables the primary device to perform or improve its intended function.
Appurtenance
32
A building or portion of a building used for the gathering together of 50 or more persons for such purposes as deliberation, education, instruction, worship, entertainment, amusement, drinking, dining or awaiting transportation.
Assembly Building
33
[OSHPD 1, 2, 3 & 4] "______________" shall mean "Enforcing Agency" as defined in Section 207.0 of this code.
Authority Having Jurisdiction
34
A boiler equipped with certain controls and limit devices
Automatic Boiler
35
An object placed in or near an appliance to change the direction or retard the flow of air, air-fuel mixtures or flue gases.
Baffle Plate
36
A closed vessel used for heating water or liquid, or for generating steam or vapor by direct application of heat from combustion fuels or electricity.
Boiler
37
A boiler furnishing steam at gauge pressure in excess of 15 pound-force per square inch (psi) or for heating water to a temperature in excess of 250°F or at a gauge pressure in excess of 160 psi. [NFPA 211:3.3.13.3]
Boiler, High Pressure
38
A reliable conductor to ensure the required electrical conductivity between metal parts required to be electrically connected. [NFPA 70:11(I)]
Bonding Conductor or Jumper
39
The region within an occupiable space between planes 3 inches and 72 inches above the floor and exceed 2 feet from the wall or fixed air-conditioning equipment. [ASHRAE 62.1:3]
Breathing Zone
40
The outdoor airflow required in the breathing zone of the occupiable space or space in a ventilation zone. [ASHRAE 62.1:6.2.2.1]
Breathing Zone Outdoor Airflow
41
A metal connector for medium- or high-heat appliances.
Breeching
42
The listed maximum capacity of any appliance, absorption unit or burner expressed in British thermal units input per hour, unless otherwise noted.
BTU/H
43
A device to convey fuel into the combustion chamber in proximity to its combustion-air supply so as to permit a stable controlled heat release compatible with the burner design and that is equipped with an ignition system to reliably ignite the entire heat release surface of the burner assembly.
Burner, Automatic Boiler
44
The Chemical Abstract System registry number.
CAS Number
45
A listed device installed in a ceiling membrane of a fire resistance-rated floor-ceiling or roof-ceiling assembly to automatically limit the radiative heat transfer through an air inlet/outlet opening. [NFPA 5000:3.3.142.1]
Ceiling Radiation Damper
46
Environmental heating equipment installed in a manner to supply heat by means of ducts or pipes to areas other than the room or space in which the equipment is located.
Central Heating Plant or Heating Plant
47
A formally stated recognition and approval of an acceptable level of competency, acceptable to the Authority Having Jurisdiction. [NFPA 96:3.3.10]
Certified
48
A person trained and certified by the equipment manufacturer, or by a recognized organization through a formal certification program for the system to be serviced or cleaned, that is acceptable to the Authority Having Jurisdiction.
Certified Person
49
One or more passageways, vertical or nearly so, for conveying flue or vent gases to the outdoors. [NFPA 54:3.3.18]
Chimney
50
A factory built, masonry, or metal chimney suitable for removing the products of combustion from fuel-burning high-heat appliances producing combustion gases in excess of 2000°F, measure at the appliance flue outlet.
Chimney, High-Heat Appliance-Type
51
A factory built, masonry, or metal chimney suitable for removing the products of combustion from fuel-burning low-heat appliances producing combustion gases not in excess of 1000°F under normal operating conditions, but capable of producing combustion gases of 1400°F during intermittent forced firing for periods up to one hour. All temperatures are measured at the appliance flue outlet.
Chimney, Low-Heat Appliance-Type
52
The pipe that connects the fuel-burning appliance to the chimney.
Chimney Connector
53
The total amount of air provided to the space that contains fuel-burning equipment. includes air for fuel combustion, draft hood dilution, and ventilation of the equipment enclosure.
Combustion Air.
54
A hood that has an outside-air supply with air delivered below or within the hood. where makeup air is diffused directly into the exhaust within the hood cavity, it becomes a short-circuit hood.
Compensating Hood
55
A compressor in which increase in pressure is attained by changing the internal volume of the compression chamber.
Compressor, Positive Displacement
56
A room or space having a volume less than 50 cubic feet per 1000 British thermal units per hour (Btu/h) of the aggregate input rating of all fuel-burning appliances installed in that space.
Confined Space
57
A recognized architectural or mechanical component of a building having a fire resistance rating as required for the structure and whose purpose is to enclosed the vapor removal duct for its full length to its termination point outside the structure without any portion of the enclosure having fire resistance rating less than the required value. [NFPA 96:3.3.22.1]
Continuous Enclosure
58
A unit consisting of a burner and its controls utilizing gaseous fuel for installation in an appliance originally utilizing another fuel. [NFPA 54:3.3.17.2]
Conversion Burner
59
CSST
Corrugated Stainless Steel Tubing
60
Appliances that are constructed and installed so that air fro combustion is derived directly from the outdoors and flue gases are discharged to the outdoors. [NFPA 54:3.3.6.3]
Direct-Vent Appliances
61
A nonadjustable device built into an appliance, or made a port of the vent connector from an appliance, that is designed to:
(1) Provide for the ready escape of the flue gases from the appliance in the event of no draft, backdraft, or stoppage beyond the draft hood.
(2) Prevent a backdraft from entering the appliance
(3) Neutralize the effect of stack action of the chimney or gas vent upon the operation of the appliance. [NFPA 54:3.3.33]
Draft Hood
62
A heater located in the airstream of a forced-air system where the air-moving unit is not provided as an integral part of the equipment.
Electric Duct Heaters
63
A device that produces heat energy to create a warm environment by the application of electric power to resistance elements, refrigerant compressors, or dissimilar material junctions.
Electric Heating Appliance
64
Ducting used for conveying air at temperatures not exceeding 250°F to or from occupied areas of any occupancy through other than heating or air-conditioning systems, such as ventilation for human usage, domestic kitchen range exhaust, bathroom exhaust ducts, and domestic-type clothes dryers exhaust ducts.
Environmental Air Duct
65
The concentration of flammable constituents in air that exceeds 25 percent of its Lower Flammability Limit (LFL).
Flammable Vapor or Fumes
66
A specific heating or heating and ventilating furnace incorporating an integral total enclosure and using only outside air for combustion.
Enclosed Furnace
67
A change in composition of a blend by preferential evaporation of the more volatile component or condensation of the less volatile component.
Fractionation
68
Natural, manufactured, liquefied petroleum, or a mixture of these.
Fuel Gas
69
A self-contained appliance for heating air by transfer of heat of combustion through metal to the air and designed to supply heated air through ducts to spaces remote from or adjacent to the appliance location. [NFPA 54:3.3.47.1]
Furnace, Central
70
A form of fixed-temperature heat-detecting device sometimes employed to restrain the operation of an electrical or mechanical control until its designed temperature is reach. [NFPA 96:3.3.28] Such devices are to be replaced following each operation.
Fusible Link
71
A device arranged to relieve pressure by operation of a fusible member at a predetermined temperature.
Fusible Plug
72
An operating device installed and serving as an integral component of a deep-fat fryer that provides secondary limitation of the grease temperature by automatically disconnecting the thermal energy input when the temperature limit is exceeded. [NFPA 96:3.3.32]
High Limit Control Device
73
The parts of a refrigeration system subjected to approximately condenser pressure.
Highside
74
An intake device connected to a mechanical exhaust system for collecting and removing grease-laden vapors, fumes, smoke, steam, heat or odors from commercial food heat-processing equipment.
Hood
75
A listed unitary exhaust hood design where the grease removal device is a nonremovable assembly that contains an integral fire-activated water-wash fire-extinguishing system listed for this purpose. [NFPA 96:3.3.33.1]
Fixed Baffle
76
A kitchen hood for collecting and removing grease and smoke.
Hood - Type I
77
A general kitchen hood for collecting and removing steam, vapor, heat, or odors.
Hood - Type II
78
A boiler having a volume exceeding 120 gallons, a heat input exceeding 200000 Btu/h, or an operating temperature exceeding 210°F that provide hot water to be used externally to itself.
Hot-Water-Heating Boiler
79
Of or relating to a heating or cooling system that transfers energy by circulating a fluid through a system of pipes or tubing.
Hydronics
80
A device that senses a limit or off-limit condition or improper sequence of events and shuts down the offending or related piece of equipment or prevents proceeding in an improper sequence in order to prevent a hazardous condition from developing.
Interlock
81
A pilot that burns during light-off and while the main burner is firing, and that is shut off with the main burner.
Intermittent Pilot
82
A pilot that burns during light-off and that is shut off during normal operation of the main burner.
Interrupted Pilot
83
The minimum concentration of a substance that propagates a flame through a homogeneous mixture of the substance and air under the specified test conditions. The "___" is sometimes referred to as LEL. For the purposes of this definition, "___" and LEL are identical.
Lower Flammable Limit (LFL)
84
A boiler furnishing hot water at pressures not exceeding 160 psi and at temperatures not exceeding 250°F.
Low-Pressure Hot-Water-Heating Boiler
85
A power boiler having an internal shell diameter of 16 inches or less, a gross volume of 5 cubic feet or less, a heating surface of 20 square feet or less (not applicable to electric boilers), and not exceeding 100 psi.
Miniature Boiler
86
An air compartment or chamber including uninhabited crawl space areas above a ceiling or below a floor, including air spaces below raised floors of computer/data processing centers or attic spaces, to one or more ducts are connected and that forms part of either the supply-air, return air, exhaust-air system, other than the occupiable space being conditioned.
Plenum
87
A boiler in which steam is generated at pressures exceeding 15 psi.
Power Boiler
88
A boiler used for heating water or liquid to a pressure exceeding 160 psi or to a temperature exceeding 250°F.
Power Hot Water Boiler (High Temperature Water Boiler)
89
A closed container, having a nominal internal diameter exceeding 6 inches and a volume exceeding 1 ½ cubic feet, for liquids, gases, vapors subjected to pressure exceeding 15 psi, or steam under a pressure.
Pressure Vessel, (Unfired)
90
Refrigerants that do not show flame propagation where tested in air at 14.7 pound-force per square inch absolute (psia) and 140°F.
Refrigerant Flammability Class 1
91
Refrigerant having a lower flammability limit (LFL) of more than 0.00625 pound per cubic foot (lb/ft³) at 140°F, 14.7 psia, and a heat of combustion of less than 8169 British thermal units per pound (Btu/lb).
Refrigerant Flammability Class 2
92
Refrigerants that are highly flammable, having a LFL of not more than 0.00625 lb/ft³ at 140°F and 14.7 psia or a heat of combustion not less than 8169 Btu/lb.
Refrigerant Flammability Class 3
93
Refrigerants having an occupational exposure limit (OEL) of not less than 400 parts per million (ppm).
Refrigerant Toxicity Class A
94
Refrigerants having an occupational exposure limit (OEL) of less than 400 parts per million (ppm).
Refrigerant Toxicity Class B
95
A heat-operated closed-refrigeration cycle in which a secondary fluid, the absorbent, absorbs a primary fluid, the refrigerant, that has been vaporized in the evaporator.
Refrigeration System, Absorption
96
A system in which the evaporator or condenser of the refrigerating system is in direct contact with the air or other substances to be cooled or heated. [ASHRAE 15:5.1.1]
Refrigeration System, Direct
97
A system in which a secondary coolant cooled or heated by the refrigerating system is circulated to the air or other substance to be cooled or heated.
Refrigeration System, Indirect
98
A combination of interconnected refrigerant-containing parts constituting one closed refrigerant circuit in which a refrigerant is circulated for the purpose of extracting heat and in which a compressor is used for compressing the refrigerant vapor.
Refrigeration System, Mechanical
99
A fully enclosed passage used for transporting a hazardous production materials and purposes other than required exiting.
Service Corridor
100
A boiler operated at pressures not exceeding 15 psi for steam.
Steam-Heating Boiler
101
A device or series of devices whose purpose is to reclaim only the heat content of air, vapors, gases, or fluids that are being expelled through the exhaust system and to transfer the thermal energy so reclaimed to a location whereby a useful purpose can be served [NFPA 96:3.3.49].
Thermal Recovery Unit
102
A listed or approved section or sections of pipe and fittings used to convey fuel gas and installed in a gas piping system for the purpose of providing a transition fro below-ground to aboveground.
Transition Gas Riser
103
A cuplike or u-shaped configuration located on the inside of a duct system component where liquids can accumulate [NFPA 96:3.3.51]
Trap
104
A factory-made gas vent listed by a nationally recognized testing agency for venting listed or approved appliances equipped to burn only gas.
Type B Gas Vent
105
A factory-made gas vent listed by a nationally recognized testing agency for venting listed or approved gas-fired vented wall furnaces.
Type B-W Gas Vent
106
A venting system consisting of listed vent piping and fittings for use with oil-burning appliances listed for use with Type L or with listed gas appliances.
Type L Gas Vent
107
A manually operated valve with one inlet that alternately can stop flow to either of two outlets.
Valve, Three-Way-Type Stop
108
Pairs of mating stop valves valving off sections of refrigeration systems and arranged so that these sections may be joined before opening these valves or separated after closing them.
Valve, Companion or Block
109
An appliance that operates with a nonpositive vent static pressure and with a vent gas temperature that avoids excessive condensate production in the vent. [NFPA 54:3.3.6.11.1]
Vent Appliance Category I
110
An appliance that operates with a nonpositive vent static pressure and with a vent gas temperature that may cause excessive condensate production in the vent. [NFPA 54:3.3.6.11.2]
Vent Appliance Category II
111
An appliance that operates with a positive vent static pressure and with a vent gas temperature that avoids excessive condensate production in the vent. [ NFPA 54:3.3.6.11.3]
Vent Appliance Category III
112
An appliance that operates with a positive vent static pressure and with a vent gas temperature that may cause excessive condensate production in the vent. [NFPA 54:3.3.6.11.4]
Vent Appliance Category IV
113
A self-contained, vented, fuel gas burning appliance complete with grilles or equivalent, designed for incorporation in or permanent attachment to the structure of a building and furnishing heated air, circulated by gravity or by a fan, directly into the space to be heated through openings in the casing. [NFPA 54:3.3.47.7]
Vented Wall Furnace
114
All of that equipment intended or installed for the purpose of supplying air to, or removing air from, any room or space by mechanical means, other than equipment that is a portion of an environmental heating, cooling, absorption, or evaporative cooling system.
Ventilation System
115
The outlet opening of an appliance provided for connection of the vent system.
Venting Collar
116
Blends comprising multiple components of different volatilities that, when used in refrigeration cycles, change volumetric composition and saturation temperatures as they evaporate or condense at constant pressure.
Zeotropic
