Glossary - Kidde VM-1 Manual

Glossary

AHJ: Acronym for authority having jurisdiction.
ASHRAE: Acronym for the American Society of Heating,
Refrigerating, and Air-conditioning Engineers.
automatic control: A system operating in this mode will
initiate smoke control measures without personnel
intervention due to a fire detection system actuation.
atrium: A large-volume space created by a floor opening
or series of floor openings connecting two or more
stories that is covered at the top of the series of
openings and is used for purposes other than an
enclosed stairway, elevator hoistway, escalator
opening, or utility shaft used for plumbing, electrical,
air-conditioning, or communications facilities.
buoyancy: The ability or tendency of smoke to rise in air.
communicating space: Spaces within a building that
have an open pathway to a large-volume space
such that smoke from a fire in the communicating
space can move unimpeded into the large-volume
space. Communicating spaces can open directly into
the large-volume space or can connect through
open passageways.
compensated system: A smoke control system where
the air injected into a stairwell is modulated or
excess pressure is vented depending upon the
number of doors opened or closed in the stairwell.
This keeps the pressure barrier relatively constant.
covered mall: A large-volume space created by a roofed-
over common pedestrian area in a building
enclosing a number of tenants and occupancies.
Covered malls may include retail stores, drinking
establishments, entertainment and amusement
facilities, offices, or other similar uses where tenant
spaces open onto or directly communicate with the
pedestrian area.
VM-1 Smoke Management Application Guide
dedicated system: A smoke control system designed for
the sole purpose of controlling smoke within a
building. Equipment is not linked to the building
HVAC system. This is accomplished by installing a
system for air movement that is separate and distinct
from the building's HVAC system and only operates
to control smoke.
FSCS: Acronym for firefighter's smoke control station.
See also, firefighter's smoke control station.
firefighter's smoke control station (FSCS): Includes
monitoring and over-riding capability over smoke
control systems and equipment provided at
designated locations within the building for the use
of the fire department. Other firefighter's systems not
required for smoke control (voice alarm, public
address, fire department communication, and
elevator control and status) may be at the same
location.
HVAC: Acronym for heating, ventilation, and air-
conditioning.
large-volume space: A space, generally two or more
stories in height, within which smoke from a fire
either in the space or in a communicating space can
move or accumulate without restriction. Atriums and
covered malls are examples of large-volume spaces.
manual control: A smoke control system operates in this
state when controls for the station are changed
manually to override automatic control functions.
noncompensated system: A smoke control system in
which a single speed fan provides pressurization in
a stairwell. Pressure will vary depending upon the
number of doors opened in the stairwell.
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