appliance for supplying cooled and/or dehumidified air or chilled liquid.. A gas-burning, automatically operated
control simultaneously the temperature, humidity, cleanness and distribution of the air to meet the requirements of a conditioned space.. The treatment of air so as to
. A blower or fan used for the purpose of distributing supply air to a room, space or area.
. Air that is provided to replace air being exhausted.
. A change in a system that involves an extension, addition or change to the arrangement, type or purpose of the original installation.
piping is installed and terminated above ground outside of a building.. A transition assembly in which plastic
Appliances equipped with an automatic burner ignition and safety shutoff device and other automatic devices which accomplish complete turn-on and shutoff of the gas to the main burner or burners, and graduate the gas supply to the burner or burners, but do not affect complete shutoff of the gas..
appliance in which the products of combustion at the point of entrance to the flue under normal operating conditions have a temperature of more than 1,000°F (538°C), but not greater than 2,000°F (1093°C).. Any
code official or other authority having jurisdiction.. Acceptable to the
code official and regularly engaged in conducting tests or furnishing inspection services.. An established and recognized agency that is approved by the
. The pressure of the weight of air and water vapor on the surface of the earth, approximately 14.7 pounds per square inch (psi) (101 kPa absolute) at sea level.
damper device attached to a chimney, vent connector, breeching or flue gas manifold to protect combustion appliances by controlling chimney draft. A double-acting barometric draft regulator is one whose balancing damper is free to move in either direction to protect combustion appliances from both excessive draft and backdraft.. A balanced
appliance for supplying steam or hot water.. A self-contained
. A boiler in which steam is generated and that operates at a steam pressure not exceeding 15 psig (100 kPa gauge).
piping to the grounding electrode system.. A conductor installed to electrically connect metallic gas
. A metal-joining process wherein coalescence is produced by the use of a nonferrous filler metal having a melting point above 1,000°F (538°C), but lower than that of the base metal being joined. The filler material is distributed between the closely fitted surfaces of the joint by capillary action.
appliances cooking primarily by radiated heat, excepting toasters.. A general term including salamanders, barbecues and other
BTU. Abbreviation for British thermal unit, which is the quantity of heat required to raise the temperature of 1 pound (454 g) of water 1°F (0.56°C) (1 Btu = 1055 J).
combustion zone.. A device for the final conveyance of the gas, or a mixture of gas and air, to the
chimney composed of solid masonry units, bricks, stones or concrete.. A field-constructed
chimney of metal.. A field-constructed
appliance used to dry wet laundry by means of heated air. Dryer classifications are as follows:. An
. Factory-built package, multiple production. Primarily used in family living environment. Usually the smallest unit physically and in function output.
. Factory-built package, multiple production. Used in business with direct intercourse of the function with the public. Not designed for use in individual family living environment.
. These regulations, subsequent amendments thereto or any emergency rule or regulation that the administrative authority having jurisdiction has lawfully adopted.
. The officer or other designated authority charged with the administration and enforcement of this code, or a duly authorized representative.
. In the context of this code, refers to the rapid oxidation of fuel accompanied by the production of heat or heat and light.
combustion of a fuel, including theoretical air and excess air.. Air necessary for complete
combustion of a fuel with the oxygen of the air, including inert gases, but excluding excess air.. Constituents resulting from the
. A location that cannot be accessed without damaging permanent parts of the building structure or finish surface. Spaces above, below or behind readily removable panels or doors shall not be considered as concealed.
. The liquid that condenses from a gas (including flue gas) caused by a reduction in temperature or increase in pressure.
. All of the written, graphic and pictorial documents prepared or assembled for describing the design, location and physical characteristics of the elements of the project necessary for obtaining a mechanical permit.
automatic device designed to regulate the gas, air, water or electrical supply to, or operation of, a mechanical system.. A manual or
Appliances such as coffee brewers and coffee urns and any appurtenant water-heating appliance, food and dish warmers, hot plates, griddles, waffle bakers and other appliances designed for installation on or in a counter..
cubic foot (0.02832 m3) when at a temperature of 60°F (16°C), saturated with water vapor and under a pressure equivalent to that of 30 inches of mercury (101 kPa).. The amount of gas that occupies 1
appliance wherein the primary function lies in the aesthetic effect of the flames.. A vented
cubic feet per hour, or Btu/h (1 Btu/h = 0.2931 W).. The maximum amount of gas input required per unit of time, usually expressed in
. The elevation of the “design flood,” including wave height, relative to the datum specified on the community’s legally designated flood hazard map.
nonadjustable device built into an appliance, or made as part of the vent connector from an appliance, that is designed to (1) provide for 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, and (3) neutralize the effect of stack action of the chimney or gas vent upon operation of the appliance.. A
piping is exposed.. A gas having a moisture and hydrocarbon dew point below any normal temperature to which the gas
furnace normally installed in an air distribution duct to supply warm air for heating. This definition shall apply only to a warm-air heating appliance that depends for air circulation on a blower not furnished as part of the furnace.. A warm-air
. A single unit providing complete, independent living facilities for one or more persons, including permanent provisions for living, sleeping, eating, cooking and sanitation.
Masonry chimneys exposed to the outdoors on one or more sides below the roof line..
valve of the plug and barrel type designed for use with gas, and equipped with a lever handle for manual operation and a dial to indicate the percentage of opening.. A
. The greater of the following two areas:
1. The area within a floodplain subject to a 1 percent or greater chance of flooding in any given year.
2. This area designated as a flood hazard area on a community’s flood hazard map, or otherwise legally designated.
floor furnace equipped with a fan which provides the primary means for circulating air.. A
floor furnace depending primarily upon circulation of air by gravity. This classification shall also include floor furnaces equipped with booster-type fans which do not materially restrict free circulation of air by gravity flow when such fans are not in operation.. A
appliance through which combustion products pass from the combustion chamber of the appliance to the draft hood inlet opening on an appliance equipped with a draft hood or to the outlet of the appliance on an appliance not equipped with a draft hood.. The passage(s) within an
. A natural gas, manufactured gas, liquefied petroleum gas or mixtures of these gases.
appliance location.. A completely self-contained heating unit that is designed to supply heated air to spaces remote from or adjacent to the
central furnace equipped with a fan or blower which provides the primary means for circulation of air.. A
furnace equipped with a booster fan that does not materially restrict free circulation of air by gravity flow when the fan is not in operation.. A
furnace designed so that it can be installed with the airflow discharge in the upflow, horizontal or downflow direction.. A
furnace designed with airflow discharge vertically upward at or near the top of the furnace. This classification includes “highboy” furnaces with the blower mounted below the heating element and “lowboy” furnaces with the blower mounted beside the heating element.. A
. An air compartment or chamber to which one or more ducts are connected and which forms part of an air distribution system.
appliance to, and disconnecting an appliance from, the supply piping. The device includes an integral, manually operated valve with a nondisplaceable valve member and is designed so that disconnection of an appliance only occurs when the manually operated valve is in the closed position.. A permanently mounted, manually operated device that provides the means for connecting an
building code as a high-hazard group classification.. Any location considered to be a fire hazard for flammable vapors, dust, combustible fibers or other highly combustible substances. The location is not necessarily categorized in the
Piping system.”. See “
appliance used to reduce combustible refuse material to ashes and which is manufactured, sold and installed as a complete unit.. An
. A heater that directs a substantial amount of its energy output in the form of infrared radiant energy into the area to be heated. Such heaters are of either the vented or unvented type.
. A joint made by bolting together a pair of flanged ends.
. A metal-to-metal compression joint in which a conical spread is made on the end of a tube that is compressed by a flare nut against a mating flare.
piping by the use of an adhesive substance which forms a continuous bond between the mating surfaces without dissolving either one of them.. A joint made in thermoset plastic
piping by heating the parts sufficiently to permit fusion of the materials when the parts are pressed together.. A joint made in thermoplastic
. A gas-tight joint obtained by the joining of metal parts in molten state.
Equipment, materials or products to which have been affixed a label, seal, symbol or other identifying mark of a nationally recognized testing laboratory, inspection agency or other organization concerned with product evaluation that maintains periodic inspection of the production of the above-labeled items and whose labeling indicates either that the equipment, material or product meets identified standards or has been tested and found suitable for a specified purpose..
piping system to verify that the system does not leak.. An operation performed on a gas
. Liquefied petroleum gas composed predominately of propane, propylene, butanes or butylenes, or mixtures thereof that is gaseous under normal atmospheric conditions, but is capable of being liquefied under moderate pressure at normal temperatures.
Equipment, materials, products or services included in a list published by an organization acceptable to the code official and concerned with evaluation of products or services that maintains periodic inspection of production of listed equipment or materials or periodic evaluation of services and whose listing states either that the equipment, material, product or service meets identified standards or has been tested and found suitable for a specified purpose..
dwelling unit utilized for living, sleeping, eating, cooking, bathing, washing and sanitation purposes.. Space within a
valve of the plug and barrel type provided with means for maintaining a lubricant between the bearing surfaces.. A
. The instrument installed to measure the volume of gas delivered through it.
. The purpose for which a building, or portion thereof, is utilized or occupied.
. A rigid conduit of iron, steel, copper, brass or plastic.
. Semirigid conduit of copper, aluminum, plastic or steel.
. A plastic that is capable of being repeatedly softened by increase of temperature and hardened by decrease of temperature.
point of delivery is the outlet of the service meter assembly or the outlet of the service regulator or service shutoff valve where a meter is not provided. Where a valve is provided at the outlet of the service meter assembly, such valve shall be considered to be downstream of the point of delivery. For undiluted liquefied petroleum gas systems, the point of delivery shall be considered to be the outlet of the first regulator that reduces pressure to 2 psig (13.8 kPag) or less.. For natural gas systems, the
appliance utilizes a cord and plug connection to a grid-isolated load and has an integral fuel supply.. A fuel cell generator of electricity, which is not fixed in place. A portable fuel cell
piping following its installation or modification.. An operation performed to verify the gas-tight integrity of gas
. To free a gas conduit of air or gas, or a mixture of gas and air.
. An individual who is registered or licensed to practice their respective design profession as defined by the statutory requirements of the professional registration laws of the state or jurisdiction in which the project is to be constructed.
1. Spring type, limited adjustment. A regulator in which the regulating force acting upon the diaphragm is derived principally from a spring, the loading of which is adjustable over a range of not more than 15 percent of the outlet pressure at the midpoint of the adjustment range.
2. Spring type, standard adjustment. A regulator in which the regulating force acting upon the diaphragm is derived principally from a spring, the loading of which is adjustable. The adjustment means shall be concealed.
regulator for use with a single gas whose adjustment means is capable of being positioned manually or automatically to two or more predetermined outlet pressure settings. Each of these settings shall be adjustable or nonadjustable. The regulator may modulate outlet pressures automatically between its maximum and minimum predetermined outlet pressure settings.. A
2. Weight type. A regulator in which the regulating force acting upon the diaphragm is derived from a weight or combination of weights.
piping system downstream of the device.. A device placed in a gas line for reducing, controlling and maintaining the pressure in that portion of the
. A device installed by the serving gas supplier to reduce and limit the service line pressure to delivery pressure.
draft hood to permit the ready escape to the atmosphere of the flue products from the draft hood in the event of no draft, back draft or stoppage beyond the draft hood, and to permit air into the draft hood in the event of a strong chimney updraft.. The opening provided in a
valve designed to forestall the development of a dangerous condition by relieving either pressure, temperature or vacuum in the hot water supply system.(DEVICE). A safety
furnace, water heater or air-conditioning appliance and at least 16 times the total volume of a boiler. Total volume of the appliance is determined from exterior dimensions and is to include fan compartments and burner vestibules, when used. When the actual ceiling height of a room is greater than 8 feet (2438 mm), the volume of the room is figured on the basis of a ceiling height of 8 feet (2438 mm).. Rooms having a volume equal to at least 12 times the total volume of a
. An enclosed space extending through one or more stories of a building, connecting vertical openings in successive floors, or floors and the roof.
specific gravity is the ratio of the weight of a given volume to that of the same volume of air, both measured under the same condition.. As applied to gas,
. A self-contained package or factory-matched packages which constitute an automatically operated assembly of integrated systems for generating electrical energy and recoverable thermal energy that is permanently connected and fixed in place.
automatic device, actuated by temperature changes, designed to control the gas supply to the burner(s) in order to maintain temperatures between predetermined limits, and in which the thermal actuating element is an integral part of the device.. An
appliance having integral means for circulation of air against 0.2 inch (15 mm H2O) or greater static pressure. Such appliance is equipped with provisions for attaching an outlet air duct and, where the appliance is for indoor installation remote from the space to be heated, is also equipped with provisions for attaching an inlet air duct.. A self-contained, automatically controlled, vented
appliance, intended for installation in the space to be heated without the use of ducts, having integral means for circulation of air. Such units are allowed to be equipped with louvers or face extensions made in accordance with the manufacturer’s specifications.. A self-contained, automatically controlled, vented
. A boiler not listed by a nationally recognized testing agency.
appliance designed for stationary installation and utilized to provide comfort heating. Such appliances provide radiant heat or convection heat by gravity or fan circulation directly from the heater and do not utilize ducts.. An unvented heating
automatic or semiautomatic device consisting essentially of a valve and operator that control the gas supply to the burner(s) during operation of an appliance. The operator shall be actuated by application of gas pressure on a flexible diaphragm, by electrical means, by mechanical means, or by other approved means.. An
valve used in conjunction with an automatic gas shutoff device to shut off the gas supply to a water-heating system. It shall be constructed integrally with the gas shutoff device or shall be a separate assembly.. A
pipe or other conduit composed of factory-made components, containing a passageway for conveying combustion products and air to the atmosphere, listed and labeled for use with a specific type or class of appliance.. A
. See “Connector.”
Piping run from a pressure-regulating device to the outdoors, designed to provide a reference to atmospheric pressure. If the device incorporates an integral pressure relief mechanism, a breather vent can also serve as a relief vent..
appliance for furnishing warm air to the space in which it is installed, directly from the heater without duct connections.. A vented self-contained, free-standing, nonrecessed
appliance complete with grilles or equivalent, designed for incorporation in or permanent attachment to the structure of a building, mobile home or travel trailer, and furnishing heated air circulated by gravity or by a fan directly into the space to be heated through openings in the casing. This definition shall exclude floor furnaces, unit heaters and central furnaces as herein defined.. A self-contained vented
flue collar or draft hood of an appliance to the outside atmosphere for the purpose of removing flue or vent gases. A venting system is usually composed of a vent or a chimney and vent connector, if used, assembled to form the open passageway.. A continuous open passageway from the
venting system designed to remove flue or vent gases by mechanical means, that consists of an induced draft portion under nonpositive static pressure or a forced draft portion under positive static pressure.. A
combustion through the front into the room being heated.. A room heater of the type designed for insertion in or attachment to a wall or partition. Such heater does not incorporate concealed venting arrangements in its construction and discharges all products of