Prism® Thermal Suppression - Lincoln Electric Prism 4 Operator's Manual

PRISM® 4
PRISM® THERMAL SUPPRESSION OVERVIEW
(AD SERIES ONLY)
The Prism® indirect low pressure
thermal suppression system uses an
extinguishing agent commonly known
as Novec 1230. It is a colorless low
non-conductive, leaves no residue, and
suppression agent.
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
remain in the closed position. This
tubing acts as a continuous linear
thermal detector that ruptures upon
temperatures above 212°F when
pressurized to 195 psi. Once the
detection tubing is ruptured, the valve
automatically opens, allowing the Novec
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
The stack light also gives visual
feedback on any system malfunction as
detailed in the Operations and
Diagnostics section.
The thermal suppression system
Lower Discharge Lower Supressant
Line Discharge Nozzle
Warning/
Diagnostic Light
Supply
Air/Inlet
Damper
Upper
Suppressant
Discharge Line
Lower
Suppressant
Discharge
Line
Suppressant
Tank
Detection Tubing
C-2
(AD1326-20, AD1326-21, AD1326-22 ONLY)
Upper Suppressant
Discharge Nozzle
ACCESSORIES
Discharge
Switch
Control
Detection
Tubing
Bypass
Control
Detection
Tubing
Pressure
Gauge
(Charge Port)
Lincoln
Smart
Connect
Modules
Exhaust/Return Air
Damper