Unless otherwise expressly stated, the following words and terms shall, for the purposes of this code and standard, have the meanings indicated in this chapter.
Words used in the present tense include the future; words in the masculine gender include the feminine and neuter; the singular number includes the plural and the plural, the singular.
Where terms are not defined through the methods authorized by this section, such terms shall have ordinarily accepted meanings such as the context implies.
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This section has been clarified by a buildings bulletin issued by the Department of Buildings.
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appliance or equipment to be reached by ready access or by a means that first requires the removal or movement of a panel, door or similar obstruction (see also "Ready access").(TO). That which enables a device,
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
occupancy, or renovation to a building or structure in existence. See Section 28-101.5 of the Administrative Code.. Any construction, addition, change of use or
piping is installed and terminated above ground outside of a building.. A transition assembly in which plastic
appliance equipped with an integral mechanical means to either draw or force products of combustion through the combustion chamber or heat exchanger.. An
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). Any appliance in which the products of combustion at the point of entrance to the flue under normal operating conditions have a temperature of 1,000°F (538°C) or less.(residential
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
appliance designed or installed in such a manner that the products of combustion are not conveyed by a vent or chimney directly to the outside atmosphere.. An
appliance designed and installed in such a manner that all of the products of combustion are conveyed directly from the appliance to the outside atmosphere through an approved chimney or vent system.. An
APPROVED. Acceptable to the commissioner. In reference to construction documents, the determination by the department after full examination that submitted construction documents comply with this code and other applicable laws and rules. In reference to materials, the determination by the commissioner that material is acceptable for its intended use. See Section 28-101.5 of the Administrative Code.
approved agency that is approved by the department as qualified to perform one or more of the inspections required by this code. See Chapter 1 of Title 28 of the Administrative Code.. An
approved agency that is approved by the department as qualified to test and evaluate the performance of one or more of the materials regulated in their use by this code. Such term shall include, when approved pursuant to department rules, a third party testing or certification agency, evaluation agency, testing laboratory, testing service or other entity concerned with product evaluation. See Chapter 1 of Title 28 of the Administrative Code.. An
burner(s) when the gas controlling device is turned on, including reignition if the flames on the burner(s) have been extinguished by means other than by the closing of the gas controlling device.. Ignition of gas at the
damper device attached to a chimney, vent connector, breeching or flue gas manifold to protect combustion equipment by controlling chimney draft. A double-acting barometric draft regulator is one in which the balancing damper is free to move in either direction to protect combustion equipment from both excessive draft and backdraft.. A balanced
appliance (equipment) for supplying steam or hot water that, for a steam boiler, operates at a pressure of more than 15 psig (103 kPa gauge), and for a hot water boiler, operates at a pressure exceeding 150 psig (1034 kPa gauge) or at a temperature exceeding 250°F (121°C).. An
appliance for supplying steam or hot water as follows:. A self-contained
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
burner that depends on draft induced by a fan that is an integral part of the appliance and is located downstream from the burner.. A
burner in which gas, air or both are supplied at pressures exceeding, for gas, the line pressure, and for air, atmospheric pressure, with this added pressure being applied at the burner.. A
flues, for the purpose of carrying gaseous products of combustion and air from a fuel-burning appliance to the outside atmosphere.. A primarily vertical structure containing one or more
labeled chimney composed of factory-made components, assembled in the field in accordance with manufacturer's instructions and the conditions of the listing.. A listed and
chimney composed of solid masonry units, bricks, stones or concrete.. A field-constructed
chimney of metal.. A field-constructed
appliance, device or equipment and the surface of the combustible material or assembly.. The minimum distance through air measured between the heat-producing surface of the mechanical
appliance used to dry wet laundry by means of heated air. Dryer classifications are as follows:. An
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
Commissioner of Buildings of the City of New York or his or her duly authorized representative. See Section 28-101.5 of the Administrative Code.. The
flue gas) caused by a reduction in temperature or increase in pressure.. The liquid that condenses from a gas (including
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 equipment, 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
vented appliance wherein the primary function lies in the aesthetic effect of the flames.. A
vented appliance designed for installation within the fire chamber of a vented fireplace, wherein the primary function lies in the aesthetic effect of the flames.. A
cubic feet per hour (1 ft3 = 0.0283 m3), or Btu/h (1 Btu/h = 0.2931 W).. The maximum amount of gas input required per unit of time, usually expressed in
Appliances that are constructed and installed so that all air for combustion is derived directly from the outside atmosphere and all flue gases are discharged directly to the outside atmosphere..
vent or chimney because of its height, and the temperature difference between the flue gases and the atmosphere.. The pressure difference created by a
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
gas piping is exposed.. A gas having a moisture and hydrocarbon dew point below any normal temperature to which the
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
EQUIPMENT. See "Appliance."
fireplace composed of listed factory-built components assembled in accordance with the terms of listing to form the completed fireplace.. A
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
furnace suspended from the floor of the space being heated, taking air for combustion from outside such space and with means for observing flames and lighting the appliance from such space.. A completely self-contained
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
floor furnace equipped with a fan which provides the primary means for circulating air.. 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
flue in a chimney or vent, for the purpose of protecting the surrounding structure from the effects of combustion products and for conveying combustion products without leakage into the atmosphere.(LINING). A system or material used to form the inside surface of a
appliance location.. A completely self-contained heating unit that is designed to supply heated air to spaces remote from or adjacent to the
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.. A self-contained
furnace of one of the types listed below combined with an electrically or fuel gas-powered summer air-conditioning system, contained in a common casing.. A single-package unit, consisting of a gas-fired forced-air
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
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
appliance that utilizes gas as a fuel or raw material or both.. An
New York City 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
appliance used to reduce combustible refuse material to ashes and which is manufactured, sold and installed as a complete unit.. An
combustion generated by the burners are released into the air stream being heated. The purpose of the heater is to offset building heat loss by heating only outdoor air.. A heater in which all the products of
combustion generated by the burners are released into the air stream being heated. The purpose of the heater is to offset building heat loss by heating outdoor air, and, if applicable, indoor air.. A heater in which all the products of
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
approved agency and that indicates that a representative sample of the material has been tested and evaluated by an approved agency for compliance with nationally recognized standards or tests to determine suitable usage in a specified manner. See Section 28-101.5 of the Administrative Code.. Material to which has been attached a label, symbol or other identifying mark of the manufacturer that contains the name of the manufacturer, the function and performance characteristics of the product or material, and the name and identification of an
LISTED. Material identified in a list published by an approved agency that maintains periodic inspection of production of listed material or periodic evaluation services and whose listing states either that the material meets identified nationally recognized standards or has been tested and found suitable for a specified purpose when installed in accordance with the manufacturer's installation instructions. See Section 28-101.5 of the Administrative Code.
valve of the plug and barrel type provided with means for maintaining a lubricant between the bearing surfaces.. A
combustion zone, and in which combustion takes place to accomplish the function for which the appliance is designed.. A device or group of devices essentially forming an integral unit for the final conveyance of gas or a mixture of gas and air to the
Modulating or throttling is the action of a control from its maximum to minimum position in either predetermined steps or increments of movement as caused by its actuating medium..
regulator, the capacity of which shall be determined by the manufacturer.. A medium pressure gas
NPS. An abbreviation for nominal pipe size.
VENT). A combination of approved bends that makes two changes in direction bringing one section of the vent out of line but into a line parallel with the other section.(
piping, valves and fittings from the outlet of the point of delivery to the outlets of the equipment shutoff valves.. All fuel
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 the outlet of the first-stage pressure regulator that provides utilization pressure, exclusive of line gas regulators.. For natural gas systems, the
portable fuel cell 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
gas piping following its installation or modification.. An operation performed to verify the gas-tight integrity of
appliance or an appliance connector to a gas supply and that is equipped with an automatic means to shut off the gas supply when the device is disconnected.. A hand-operated device that provides a means for connecting and disconnecting an
appliance or equipment to be directly reached, without requiring the removal or movement of any panel, door or similar obstruction (see "Access").(TO). That which enables a device,
registered design professional who prepared or supervised the preparation of applicable construction documents filed with the department.. The
pressure regulator for controlling pressure to the manifold of equipment. Types of appliance regulators are as follows:. A
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
1. Spring type, nonadjustable. A regulator in which the regulating force acting upon the diaphragm is derived principally from a spring, the loading of which is not field adjustable.
2. Weight type. A regulator in which the regulating force acting upon the diaphragm is derived from a weight or combination of weights.
service pressure regulator and the equipment for controlling, maintaining or reducing the pressure in that portion of the piping system downstream of the device.. A device placed in a gas line between the
regulator reduces the gas piping pressure to the appliance regulator or to the appliance utilization pressure.. A medium-pressure (MP)
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
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
automatic valve that opens and closes a relief vent, depending on whether the pressure is above or below a predetermined value.. An
automatic valve that opens and closes a relief vent, depending on whether the temperature is above or below a predetermined value.. An
valve that automatically opens a relief vent at a predetermined temperature and that must be manually returned to the closed position.. A
valve that automatically opens and closes a vent for relieving a vacuum within the hot water supply system, depending on whether the vacuum is above or below a predetermined value.. A
ROOM HEATER, UNVENTED. See "Unvented room heater."
ROOM HEATER, VENTED. See "Vented room heater."
furnace 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
SAFETY SHUTOFF DEVICE. See "Flame safeguard."
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,
controls electrically, by means of separate components, the flow of gas to the burner(s) to maintain selected temperatures.. A device that senses changes in temperature and
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
1. Graduating thermostat. A thermostat in which the motion of the valve is approximately in direct proportion to the effective motion of the thermal element induced by temperature change.
2. Snap-acting thermostat. A thermostat in which the thermostatic valve travels instantly from the closed to the open position, and vice versa.
pipe to steel pipe. The purpose of this fitting is to provide a permanent, pressure-tight connection between two materials which cannot be joined directly one to another.. An adapter for joining plastic
vented appliance having integral means for circulation of air against 0.2 inch (15mm 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,
appliance designed for stationary installation and utilized to provide comfort heating. Such appliance provides radiant heat or convection heat by gravity or fan circulation directly from the heater and does 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
valve located in the piping system, used to isolate individual equipment for purposes such as service or replacement.. A
valve in the gas line for the purpose of completely turning on or shutting off the gas supply to the appliance, except to pilot or pilots that are provided with independent shutoff.. A manually operated
automatic shutoff valve installed in the gas supply piping and set to shut off when unsafe conditions occur. The device remains closed until manually reopened.. An
valve, installed by the serving gas supplier between the service meter or source of supply and the customer piping system, to shut off the entire piping system.. 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
vent listed and labeled for use with appliances with draft hoods and other Category I appliances that are listed for use with Type B vents.. A
vent listed and labeled for use with appliances that are listed for use with Type L or Type B vents.. A
Connector").. (See "
combustion from appliances plus excess air plus dilution air in the vent connector, gas vent or chimney above the draft hood or draft regulator.. Products of
Appliances that are categorized for the purpose of vent selection are classified into the following four categories: . An appliance that operates with a nonpositive vent static pressure and with a vent gas temperature that avoids excessive condensate production in the vent..
appliance that operates with a nonpositive vent static pressure and with a vent gas temperature that is capable of causing excessive condensate production in the vent.. An
appliance that operates with a positive vent static pressure and with a vent gas temperature that avoids excessive condensate production in the vent.. An
appliance that operates with a positive vent static pressure and with a vent gas temperature that is capable of causing excessive condensate production in the vent.. An
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
vented 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
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
venting system using a fan or other mechanical means to cause the removal of flue or vent gases under positive static vent pressure.. A portion of a
venting system using a fan or other mechanical means to cause the removal of flue or vent gases under nonpositive static vent pressure.. A portion of a
venting system designed to remove flue or vent gases under nonpositive static vent pressure entirely by natural draft.. 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
appliance or equipment that heats potable water and supplies such water to the potable hot water distribution system.. Any heating