System Overview - Lincoln Electric Prism L17587-1 Operator's Manual

®
PRISM
PRISM® L SERIES THERMAL SUPPRESSION

SYSTEM OVERVIEW

The Prism indirect low pressure
®
thermal suppression system uses an
extinguishing agent commonly known
as ABC Dry Chem. It is a nely divided
powder that has been treated to be
water repellent and capable of being
uidized and free owing so that it can
be discharged through hoses and piping
under the in uence of expellant gas.
The unit utilizes a UL recognized
component (per UL standard 521), a
Linear Heat Detector known as Firetrace
Automatic Fire Detection Tubing, which
when pressurized with Dry Nitrogen, will
allow the re suppression valve to
remain in the closed position. This
tubing acts as a continuous linear
thermal detector that ruptures upon
direct ame impingement or at
temperatures above 212°F when
pressurized to 195 psi. Once the
detection tubing is ruptured, the valve
automatically opens, allowing the ABC
dry chem agent to ow through the
discharge piping, distributing the extin-
guishing agent through the nozzles into
the protected volume.
When the system's smoke detector is
activated or the detection tubing is
ruptured, the integrated controls quickly
shut down the fan and close the two
dampers to create a protected volume.
A LED strobe light provides visual
noti cation of any system discharge.
The stack light also gives visual
feedback on any system malfunction as
detailed in the Operations and
Diagnostics section.
The thermal suppression system
components are identi ed on page C-2.
Detection Tubing
L17587-12, L17587-13, L17587-14, L17587-15, L17587-16,
L17587-17, L17587-18, L17587-24, L17587-25, L17587-26,
L17587-27, L17587-28, L17587-35, L17587-37
Lincoln Smart
Connect Module
Supply Air/Inlet
Damper
Suppressant
Discharge
Hoses
Upper Suppressant
Discharge Nozzle
Lincoln Smart
Connect Module
Suppressant
Tank
C-2
ACCESSORIES
Smoke detector (mounted indoors or
outdoors on exhaust/return air duct).
Dual fan units supplied with two
detectors - one for each fan exhaust.
Discharge
Switch Control
Warning/Diagnostic Light
(mounted indoors)
Main Control Panel
Detection Tubing pressure
(mounted indoors)
gauge/charge port
Bypass Control
(mounted indoors)
Lincoln Smart Connect Modules
(mounted indoors)