2-2
The Simplex Smoke Control System has the following general requirements:
• A smoke control system is a complete system engineered for a particular installation.
• Electrical supervision is required up to the input of the trunk-connected devices involved with the
electrical sensing and control of HVAC devices.
• The interconnection of the smoke control equipment to the HVAC equipment, and to other system
equipment, is intended to be in accordance with a specific installation diagram that is generated by either
the smoke control equipment manufacturer or by another responsible party.
Equipment for Smoke Control Systems is to be listed to Underwriters Laboratories category
UUKL per the requirement of UL 864, Control Units and Accessories for Fire Alarm Systems.
Additionally, system equipment must be in accordance with locally adopted codes such as
NFPA 92A and the pertinent building codes.
Some of the smoke control considerations are as follows:
• Standby Power - Standby power for Simplex Smoke Control System Equipment is optional, however if
the equipment also provides fire alarm service then standby power would be required.
• Smoke Control Actuating Input Circuits - The circuits which connect to devices which initiate
automatic smoke control must consist of one of the following:
- A supervised fire alarm initiating circuit of a Fire Alarm Control Unit which is also
providing smoke control.
- A supervised circuit connected to a zone output of a UL Listed Fire Alarm Control Unit.
- An unsupervised circuit connected to a zone output of a Listed Fire Alarm Control Unit
with each unit mounted adjacent (within twenty feet) to the other and the interconnecting
wiring run in conduit.
•
Firefighter’s Smoke Control Station - Each system must also provide a Firefighter’s Smoke Control
Station (FSCS) as defined in NFPA 92A. The FSCS provides a complete and easily understood system
status, with provisions for manually overriding any smoke control process.
The contents of this document are derived from Standard NFPA 92A Recommended Practice for
Smoke-Control Systems. Additional construction and reliability concerns, not covered in
NFPA 92A, are derived from similar requirements governing Fire Alarm Control Units as found in
UL Standard 864. Detailed engineering design information is contained in the ASHRAE
publication, Design of Smoke Management Systems.
System Requirements
General
Requirements
Agency
Requirements
To Next Page
Loading...
Need help?
General
