Det-Tronics PM-5MP & PM-5MP+ Dual Spectrum IR Flame Detector - Manual (Page 7)

(Drawing 420031, Appendix A). Detectors may be wired
in a standard NFPA class B, style B configuration or in a
class A, style D configuration. Approved initiating device
circuits may be either intrinsically safe, nonincendive, or
suitable for the classified location as required.
INTRINSICALLY SAFE CIRCUITS
Intrinsically safe installations require the use of suitable
and approved barriers, an approved fire alarm control
panel that is compatible with the barriers, and wiring
methods consistent with ANSI/ISA-RP12.6 and other
code. Appendix B calls out the type and quantity of bar-
riers required for installation in hazardous (classified)
locations and shows the electrical interconnection to an
NFPA compliant fire alarm control panel. Wiring that
passes from the non-hazardous location to the haz-
ardous location should pass through a seal appropriate
for the type of hazard. All control room instrumentation
must operate at less than 250 VRMS.
The barriers may be located in the main control panel or
in a separate enclosure, but adequate separation
between intrinsically safe and non-intrinsically safe
wiring must be observed as defined by ANSI/ISA-
RP12.6. Barrier grounds should be connected separate-
ly to the same grounding location.
All initiating device wiring should be run in its own sepa-
rate raceway. Table 4 gives the maximum one way wiring
distances based on wire and barrier resistance. It is also
important not to exceed the maximum inductance and
capacitance listed on the intrinsic safety barriers. This
may restrict the maximum cable length to less than the
values listed in Table 4. Consult Appendix B for further
instructions.
NONINCENDIVE CIRCUITS
In Class I, Division 2, Group A, B, C, & D locations, the
detector may be installed in nonincendive circuits. It is
also suitable for installation in Class II/III, Division 2,
Group F & G hazardous locations. Installations require
the use of an approved fire alarm control panel that is
compatible with the Class B, Style B and/or Class A,
Style D initiating device circuits. See Appendix C and D.
NOTE
ANSI/NFPA 70 (NEC) Article 501-4(b) requires the
use of enclosed gasketed wireways.
SYSTEM TEST
After the fire protection system is installed, it should be
tested for correct operation. The detectors may be test-
ed with live fires or by using the hand-held model PSS-
MP Test Set P/N 420116. The details of this sequence will
vary with particular installations, but the procedure must
include the following steps. See Appendix E.
PSS-MP Test Procedure
WARNING
A full system test results in an alarm output. This
will result in the automatic suppression system
being activated if it is not disabled prior to testing.
1. Suppression System. Disable the suppression
system if its activation is not desired during this test.
WARNING
Do not use the PSS-MP Test Set unless the area is
known to be non-hazardous.
2. Operation of PSS-MP Test Set. Turn on the
PSS-MP and wait at least 15 seconds. Direct the
beam into the front of the detector to cause an alarm
output. Hold the PSS-MP so that the infrared filter is
less than 1 inch from the front of the flame detector
to be tested as shown in Figure 3. See Appendix E
for more detailed information.
3. Fire Response. Expose the sensor under test to a
PSS-MP as described in Step 2. The control panel
should indicate an alarm condition for the position or
zone corresponding to the sensor.
95-8493
5
AWG Maximum One Way
(Solid) Wiring Distance in Feet
(Excluding Integral Cable)
14–18 1000
20 600
22 400
T0047
Table 4—Maximum Wiring Distances
Figure 3—Testing a PM-5MP with the PSS-MP Test Set