ACCESSORIES (Continued)
Alarms
Several types of electric alarms are available. Each of these
operate on 24 VDC and must be used on the alarm circuit
of an AUTOPULSE Control System. Refer to appropriate
AUTOPULSE Control System installation, maintenance,
and recharge manual for detailed design information. 120
VAC alarms are also available to use with an ANSUL
AUTOMAN II-C Releasing Device.
Control Panels
The AUTOPULSE Control System is the only approved
detection and alarm system for use with the INERGEN fire
suppression system. Several styles of AUTOPULSE panels
are available. Refer to appropriate AUTOPULSE Control
System installation, maintenance, and recharge manual for
detailed design information.
RESERVE SYSTEM
Normally the authority having jurisdiction will determine
whether a hazard requires a reserve set of INERGEN cylin-
ders, either connected or spares.
NFPA 2001, Standard on Clean Agent Fire Extinguishing
Systems, states: “Where required, the reserve quantity
shall be as many multiples of the primary supply as the
authority having jurisdiction considers necessary.”
“Where uninterrupted protection is required, both primary
and reserve supply shall be permanently connected to the
distribution piping and arranged for easy changeover.”
IRI (Industrial Risk Insurers) requires the following:
“In high pressure systems an extra full complement of
charged cylinders (connected reserve) manifolded and
piped to feed into the automatic system should be pro-
vided on all installations. The reserve supply is actuat-
ed by manual operation of the main/reserve switch on
either electrically operated or pneumatically operated
systems.
A connected reserve is desirable for four reasons:
– Protection should reflash occur.
– Reliability should the main bank malfunction.
– Protection during impairment when main tanks are
being replaced.
– Protection of other hazards if selector valves are
involved and multiple hazards are protected by the
same set of cylinders. See selector valve informa-
tion on Page 5-11.
If a full complement of charged cylinders cannot be
obtained, or the empty cylinders recharged, deliv-
ered and reinstalled within 24 hours, a third comple-
ment of fully charged spare cylinders should be
maintained on premises for emergency use. The
need for spare cylinders may depend upon whether
or not the hazard is under protection of automatic
sprinklers.”
When designing a system, always determine if, and what
kind of, reserve system is required.
NOTE: Usage of reserve systems with primary system may
make hazard area unsafe for normal occupancy.
DEVELOP BILL OF MATERIALS
After completing the subsections of the design section,
finalize the system design by completing a bill of material
for the system. The bill of material, hazard sketches,
hydraulic calculations, and any notes, should be kept on file
for future reference.
SECTION V
UL EX-4510 12-1-01 Page 5-16
Design
