Section 27-771
§ 27-771 Scope. This subchapter shall establish the minimum safety
requirements for, and control the design, construction, installation,
alteration and use of, systems for providing mechanical ventilation, air
conditioning, air cooling, air heating and refrigeration. In addition,
within special flood hazard areas, and below the regulatory flood datum,
as described in article ten of subchapter four of this chapter,
mechanical ventilation, air conditioning and refrigeration systems and
related equipment shall meet the requirements of the applicable
provisions of reference standard RS 4-5.
Section 27-772
§ 27-772 Standards. The provisions of reference standard RS-13 shall
be a part of this subchapter.
Section 27-773
§ 27-773 Definitions. For definitions to be used in the interpretation
of this subchapter, see subchapter two of this chapter.
Section 27-774
§ 27-774 Plans. For the requirements governing the filing of plans and
the work to be shown on plans, see subchapter one of this chapter.
Section 27-775
§ 27-775 Permits. For the requirements governing equipment work
permits and equipment use permits, see subchapter one of this chapter.
Section 27-776
§ 27-776 General requirements. (a) Ventilation. The minimum quantities
of air and other requirements for the ventilation of habitable and
occupiable rooms shall be as required by subchapter twelve of this
chapter, and for the ventilation of special uses and occupancies by
subchapters seven and eight of this chapter.
(b) Noise control. Noise control requirements for mechanical equipment
shall be as required by subchapter twelve of this chapter.
(c) Safety. All systems, equipment, and materials including any
devices, apparatus, piping work, sheet metal work, insulation work, and
supports therefor, used as part of or in connection with installations
governed by this subchapter, shall be designed, installed, located, and
operated so that they will not create an immediate or potential danger
to life or impair public health or welfare. No piping of any kind, with
the exception of piping required or, permitted under subchapter
seventeen of this chapter, shall be permitted within a stair enclosure.
Ducts protected in accordance with the requirements of this subchapter,
which do not reduce the required clearances of a stair enclosure, are
permissible.
(d) Openings. No openings for outdoor exhaust air discharges, air
intakes, or reliefs from equipment shall be located and constructed so
as to:
(1) Interfere with the proper functioning of other openings in the
same building or in adjoining buildings.
(2) Interfere unreasonably with the occupants of the same building or
adjoining buildings or with the general public.
(3) Create a fire or health hazard.
Section 27-777
§ 27-777 Construction. The construction, installation, and alteration
of systems for providing mechanical ventilation, air conditioning, air
cooling, air heating, and refrigeration, shall be in accordance with the
following:
(a) Air conditioning and ventilating systems for all occupancies shall
be constructed in accordance with the provisions of reference standard
RS 13-1. In addition, equipment used for air conditioning systems shall
be constructed, installed and altered in accordance with the provisions
of reference standards RS 13-7 through 13-15. Where any conflicts arise
between the electrical provisions of the foregoing reference standards
and the New York city electrical code, the provisions of the latter
shall govern.
(b) Air conditioning systems for one and two family dwellings, for one
story buildings four thousand square feet or less in gross floor area
provided ducts do not penetrate fire divisions, and for buildings
classified in mercantile occupancy group C, twenty-five hundred square
feet or less in gross floor area shall be constructed and installed in
accordance with the provisions of reference standard RS 13-4. Also see
article eleven of subchapter fourteen of this chapter.
(c) Exhaust systems for cooking spaces requiring mechanical
ventilation in accordance with the provisions of subchapter twelve of
this chapter, except kitchens located within dwelling units, shall be
installed as provided in reference standard RS 13-2.
(d) Restaurant cooking equipment shall be provided with a means of
ventilating such equipment constructed in accordance with the provisions
of reference standard RS 13-3, provided however that restaurant cooking
equipment installed for periodic cooking use other than commerical only,
in community rooms of multiple dwellings, firehouses and other low
hazard occupancies as determined by the commissioner may be provided
with a means of ventilation constructed in accordance with the
provisions of reference standard RS 13-1.
(e) Air blower and exhaust systems, where required for the removal or
conveying of dust, vapor, or other impurities, shall be installed in
accordance with the provisions of reference standard RS 13-5.
(f) Refrigeration systems shall be constructed, installed, and altered
in accordance with the provisions of reference standard RS 13-6.
(g) The utilization of city water in air conditioning and
refrigeration systems shall be subject to the requirements of reference
standard RS-16.
Section 27-777.1
§ 27-777.1 Smoke control requirements. (a) In all buildings classified
in occupancy group C, D, E, F, G, H, J-1 or J-2:
(1) Ventilation systems supplying different occupancy groups shall not
be interconnected, provided however that a ventilation system may serve
two occupancy groups located on the same floor when the accessory use
occupies less than twenty per cent of the floor area occupied by the
principal use.
(2) Ventilation systems supplying corridors shall not be
interconnected with systems serving other spaces, except that this
requirement shall not apply to floors used exclusively as office space
in buildings classified in occupancy group E which are fully
sprinklered.
(3) A ventilation system supplying any part of a means of egress shall
not be interconnected with any other ventilation system.
(4) A ventilation system supplying public areas and assembly spaces
shall have smoke detecting devices that will shut down the system upon
detecting smoke.
(5) In buildings classified in occupancy group J-2, ventilation
systems supplying individual apartments shall not be directly connected
with any other ventilation system.
(6) Except in buildings classified in occupancy group J-2, and as
otherwise provided in section 27-343 of article five of subchapter five
of this chapter, either a combined heat and smoke damper or independent
heat and smoke dampers shall be installed at any penetration of
construction required to have a fire-resistance rating.
(b) In all buildings classified in occupancy group C, D, E, F, G, H or
J-1, there shall be provided a system of mechanical means of sufficient
capacity to exhaust six air changes per hour or 1 cfm/sq. ft., whichever
is greater, from the largest floor in the building, using either
dedicated fan equipment or the building ventilation system arranged to
shut down automatically with manual override capability to exhaust one
floor at a time through a roof or an approved location on an exterior
wall other than a lot line wall.
Section 27-777.2
§ 27-777.2 Ventilation in existing J-1 buildings. In any existing
building classified in occupancy group J-1, either seventy-five feet or
more in height or containing thirty or more sleeping rooms:
(a) Where a corridor or space above a ceiling in a corridor is being
used on or after February first, nineteen hundred eighty-four to furnish
direct ventilation to a sleeping room or suite, such use shall, unless
continued use is permitted by the commissioner, be discontinued by
closing all openings between the corridor and sleeping room with
construction having a fire-resistance rating equal to the construction
in which the opening occurs. When continued use of corridor spaces as a
plenum is permitted, smoke detecting devices shall be installed in
accordance with the requirements of section 27-981 of article six of
subchapter seventeen of this chapter and activation of any two detectors
on a floor shall cause closure of all openings to that floor and
shut-off of ventilation service to the floor.
(b) All corridors and other public areas not provided with natural
ventilation meeting the requirements of section 27-761 of article eight
of subchapter twelve of this chapter shall be provided with manual smoke
purging by means of existing ventilation systems.
(c) The requirements of this section shall be complied with on or
before April first, nineteen hundred eighty-seven.
To the extent possible under law, Friends of Devin Balkind for Public Advocate has waived all copyright and related or neighboring rights to New York City Administrative Code. This work is published from: United States.
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