Chentronics iScan 3 User manual

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iScan®3 MANUAL
PAGE 1 OF 22
ISO 9001 CERTIFIED
DRAWN BY:
AR
ON:2021-MAY-14
LAST REV BY:
AR
ON:2022-AUG-01
DCO No.
14724
DWG. No. MNL-ISCAN3
REV. F
THIS DRAWING OWNED BY CHENTRONICS. IT IS
CONDITIONALLY LOANED AND IS TO BE RETURNED UPON
REQUEST. THE BORROWER BY RECEIVING IT HAS AGREED
NOT TO REPRODUCE NOR COPY IT IN WHOLE OR IN PART NOR
TO FURNISH INFORMATION FROM IT TO OTHERS NOR TO
MAKE ANY USE OF IT THAT IS OR MAY BE INJURIOUS TO
CHENTRONICS. FOR MORE INFORMATION, PLEASE CONTACT
CHENTRONICS AT +1.607.334.5531.
TOLERANCE NOTES
FABRICATED TOLERANCES
≥2 ft (610 mm) ± 0.250 in (6.4 mm)
< 2ft (610 mm) ± 0.125 in (3.2 mm)
MACHINED TOLERANCES
± 0.050 DECIMAL DIM (1 PLACE)
± 0.010 DECIMAL DIM (2 PLACES)
± 0.005 DECIMAL DIM (3 PLACES)
MNL-ISCAN3
iScan®3
Flame Scanner
KEEP THIS MANUAL IN A SAFE PLACE
FOR FUTURE REFERENCE
READ THIS MANUAL BEFORE USING THIS PRODUCT.FAILURE TO FOLLOW THE INSTRUCTIONS AND SAFETY
PRECAUTIONS IN THIS MANUAL CAN RESULT IN SERIOUS INJURY,DEATH,OR DAMAGE TO EQUIPMENT.

RELATED DOCUMENT –MUST COMPLY WITH SCHEDULE DOCUMENT(S):
CERT-iS3 MNL, CDM-10000105, 106, 107, 108, 109, 110,
113, 119, 167, 188, 191, 192
FOR A LIST OF RELEVANT PATENTS
AND TRADEMARKS PLEASE SEE
CHENTRONICS.COM/LEGAL-NOTICES
iScan®3 MANUAL
PAGE 2 OF 22
ISO 9001 CERTIFIED
DRAWN BY:
AR
ON:2021-MAY-14
LAST REV BY:
AR
ON:2022-AUG-01
DCO No.
14724
DWG. No. MNL-ISCAN3
REV. F
THIS DRAWING OWNED BY CHENTRONICS. IT IS
CONDITIONALLY LOANED AND IS TO BE RETURNED UPON
REQUEST. THE BORROWER BY RECEIVING IT HAS AGREED
NOT TO REPRODUCE NOR COPY IT IN WHOLE OR IN PART NOR
TO FURNISH INFORMATION FROM IT TO OTHERS NOR TO
MAKE ANY USE OF IT THAT IS OR MAY BE INJURIOUS TO
CHENTRONICS. FOR MORE INFORMATION, PLEASE CONTACT
CHENTRONICS AT +1.607.334.5531.
TOLERANCE NOTES
FABRICATED TOLERANCES
≥2 ft (610 mm) ± 0.250 in (6.4 mm)
< 2ft (610 mm) ± 0.125 in (3.2 mm)
MACHINED TOLERANCES
± 0.050 DECIMAL DIM (1 PLACE)
± 0.010 DECIMAL DIM (2 PLACES)
± 0.005 DECIMAL DIM (3 PLACES)
MNL-ISCAN3
Contents
1.0 Important Safety Information..........................................................................................................3
2.0 Product Features ..............................................................................................................................5
2.1 Ease of Installation........................................................................................................................5
2.2 Thermal Protection .......................................................................................................................7
3.0 Technical Specifications ...................................................................................................................8
3.1 Definitions.....................................................................................................................................8
3.2 Specification Table........................................................................................................................8
4.0 Wiring Instructions.........................................................................................................................10
4.1 Wiring Diagram ...........................................................................................................................11
4.2 Cable Connection........................................................................................................................14
4.3 Power/Control Cable Installation................................................................................................14
4.4 Locking Nut Installation ..............................................................................................................15
4.5 Communications Wiring..............................................................................................................16
4.6 “Daisy Chain” Configuration.......................................................................................................17
4.7 “Split or Y Chain” Configuration..................................................................................................18
4.8 Remote File Select.......................................................................................................................19
5.0 Sighting The Scanner......................................................................................................................20
5.1 Ring of Light Scanner Status Display...........................................................................................21
5.2 Cleaning the Lens........................................................................................................................22
6.0 Warranty Instructions ....................................................................................................................22
7.0 Maintenance and Special, “X,” Conditions of Use ........................................................................22
8.0 Technical Support ...........................................................................................................................22

RELATED DOCUMENT –MUST COMPLY WITH SCHEDULE DOCUMENT(S):
CERT-iS3 MNL, CDM-10000105, 106, 107, 108, 109, 110,
113, 119, 167, 188, 191, 192
FOR A LIST OF RELEVANT PATENTS
AND TRADEMARKS PLEASE SEE
CHENTRONICS.COM/LEGAL-NOTICES
iScan®3 MANUAL
PAGE 3 OF 22
ISO 9001 CERTIFIED
DRAWN BY:
AR
ON:2021-MAY-14
LAST REV BY:
AR
ON:2022-AUG-01
DCO No.
14724
DWG. No. MNL-ISCAN3
REV. F
THIS DRAWING OWNED BY CHENTRONICS. IT IS
CONDITIONALLY LOANED AND IS TO BE RETURNED UPON
REQUEST. THE BORROWER BY RECEIVING IT HAS AGREED
NOT TO REPRODUCE NOR COPY IT IN WHOLE OR IN PART NOR
TO FURNISH INFORMATION FROM IT TO OTHERS NOR TO
MAKE ANY USE OF IT THAT IS OR MAY BE INJURIOUS TO
CHENTRONICS. FOR MORE INFORMATION, PLEASE CONTACT
CHENTRONICS AT +1.607.334.5531.
TOLERANCE NOTES
FABRICATED TOLERANCES
≥2 ft (610 mm) ± 0.250 in (6.4 mm)
< 2ft (610 mm) ± 0.125 in (3.2 mm)
MACHINED TOLERANCES
± 0.050 DECIMAL DIM (1 PLACE)
± 0.010 DECIMAL DIM (2 PLACES)
± 0.005 DECIMAL DIM (3 PLACES)
MNL-ISCAN3
1.0 Important Safety Information
Read All Instructions Before Using Equipment
The instructions in this manual serve as a general guide. It is intended for use by qualified personnel with
knowledge of equipment of this type. It is not intended to cover all possible variations in equipment or to
provide for specific operating problems which may arise.
You are responsible for adhering to all warnings or cautions provided in this manual.
In addition to any general safety measures provided in this manual, you must comply with all national,
state, local, and company safety regulations.
Safety Symbols used in this manual comply with ISO 3864.
THESE SYMBOLS INDICATE POTENTIAL PERSONAL INJURY HAZARDS.
OBEY ALL SAFETY MESSAGES THAT FOLLOW THESE SYMBOLS TO AVOID POSSIBLE INJURY OR DEATH.
Indicates a hazard with a high level of risk, which, if not avoided,
will result in death or severe injury.
Indicates a hazard with a medium level of risk, which, if not
avoided, could result in death or severe injury.
Indicates a hazard with a low level of risk, which, if not avoided,
will result in minor or moderate injury.

RELATED DOCUMENT –MUST COMPLY WITH SCHEDULE DOCUMENT(S):
CERT-iS3 MNL, CDM-10000105, 106, 107, 108, 109, 110,
113, 119, 167, 188, 191, 192
FOR A LIST OF RELEVANT PATENTS
AND TRADEMARKS PLEASE SEE
CHENTRONICS.COM/LEGAL-NOTICES
iScan®3 MANUAL
PAGE 4 OF 22
ISO 9001 CERTIFIED
DRAWN BY:
AR
ON:2021-MAY-14
LAST REV BY:
AR
ON:2022-AUG-01
DCO No.
14724
DWG. No. MNL-ISCAN3
REV. F
THIS DRAWING OWNED BY CHENTRONICS. IT IS
CONDITIONALLY LOANED AND IS TO BE RETURNED UPON
REQUEST. THE BORROWER BY RECEIVING IT HAS AGREED
NOT TO REPRODUCE NOR COPY IT IN WHOLE OR IN PART NOR
TO FURNISH INFORMATION FROM IT TO OTHERS NOR TO
MAKE ANY USE OF IT THAT IS OR MAY BE INJURIOUS TO
CHENTRONICS. FOR MORE INFORMATION, PLEASE CONTACT
CHENTRONICS AT +1.607.334.5531.
TOLERANCE NOTES
FABRICATED TOLERANCES
≥2 ft (610 mm) ± 0.250 in (6.4 mm)
< 2ft (610 mm) ± 0.125 in (3.2 mm)
MACHINED TOLERANCES
± 0.050 DECIMAL DIM (1 PLACE)
± 0.010 DECIMAL DIM (2 PLACES)
± 0.005 DECIMAL DIM (3 PLACES)
MNL-ISCAN3
EXPLOSION HAZARD
Do not open the equipment cover or service the equipment if an explosive atmosphere may be present.
Equipment must be installed and serviced by qualified personnel by local and national codes, standards,
and ordinances.
Lisez toutes les instructions avant d'utiliser l'équipement
Les instructions fournies dans ce manuel ont été préparées pour servir de guide général. Il est destiné à
être utilisé par du personnel qualifié connaissant l'équipement de ce type. Il n’est pas destiné à couvrir
toutes les variations possibles d’équipement ni à régler les problèmes de fonctionnement spécifiques qui
peuvent survenir.
Vous êtes responsable du respect de tous les avertissements ou mises en garde fournis dans ce manuel.
En plus des mesures de sécurité générales fournies dans ce manuel, vous devez respecter à tout moment
toutes les réglementations de sécurité nationales, locales et de l'entreprise.
Les symboles de sécurité utilisés dans ce manuel sont conformes à la norme ISO
3864.
CES SYMBOLES SONT UTILISÉS POUR VOUS AVERTIR DES RISQUES DE BLESSURES POTENTIELS.
RESPECTEZ TOUS LES MESSAGES DE SÉCURITÉ QUI SUIVENT CES SYMBOLES POUR ÉVITER LES BLESSURES POTENTIELLES OU
LA MORT.

RELATED DOCUMENT –MUST COMPLY WITH SCHEDULE DOCUMENT(S):
CERT-iS3 MNL, CDM-10000105, 106, 107, 108, 109, 110,
113, 119, 167, 188, 191, 192
FOR A LIST OF RELEVANT PATENTS
AND TRADEMARKS PLEASE SEE
CHENTRONICS.COM/LEGAL-NOTICES
iScan®3 MANUAL
PAGE 5 OF 22
ISO 9001 CERTIFIED
DRAWN BY:
AR
ON:2021-MAY-14
LAST REV BY:
AR
ON:2022-AUG-01
DCO No.
14724
DWG. No. MNL-ISCAN3
REV. F
THIS DRAWING OWNED BY CHENTRONICS. IT IS
CONDITIONALLY LOANED AND IS TO BE RETURNED UPON
REQUEST. THE BORROWER BY RECEIVING IT HAS AGREED
NOT TO REPRODUCE NOR COPY IT IN WHOLE OR IN PART NOR
TO FURNISH INFORMATION FROM IT TO OTHERS NOR TO
MAKE ANY USE OF IT THAT IS OR MAY BE INJURIOUS TO
CHENTRONICS. FOR MORE INFORMATION, PLEASE CONTACT
CHENTRONICS AT +1.607.334.5531.
TOLERANCE NOTES
FABRICATED TOLERANCES
≥2 ft (610 mm) ± 0.250 in (6.4 mm)
< 2ft (610 mm) ± 0.125 in (3.2 mm)
MACHINED TOLERANCES
± 0.050 DECIMAL DIM (1 PLACE)
± 0.010 DECIMAL DIM (2 PLACES)
± 0.005 DECIMAL DIM (3 PLACES)
MNL-ISCAN3
Indique un danger avec un niveau élevé de risque qui, s’il n'est pas
évité, entraînera la mort ou des blessures graves.
Indique un danger avec un niveau de risque moyen qui, s’il n'est pas
évité, pourrait entraîner la mort ou des blessures graves.
Indique un danger avec un niveau de risque bas qui, s’il n'est pas
évité, entraînera des blessures mineures ou modérées.
RISQUE D’EXPLOSION
N'ouvrez pas le capot de l'équipement et ne le réparez pas si une atmosphère explosive peut être
présente. L'équipement doit être installé et entretenu par du personnel qualifié conformément aux codes,
normes et ordonnances locales et nationales applicables
2.0 Product Features
The iScan3 flame scanner is designed to detect flame from a variety of fuels. The iScan3 consists of an
integrated viewing head and signal processor. No secondary signal processor or amplifier is required.
2.1 Ease of Installation
QUICK-CONNECT BURNER MOUNT:
The simple cam-and-groove mechanism allows for quick mounting, release, and rotation of the scanner.
Figure 1: PN: 04005000-SB/MB

RELATED DOCUMENT –MUST COMPLY WITH SCHEDULE DOCUMENT(S):
CERT-iS3 MNL, CDM-10000105, 106, 107, 108, 109, 110,
113, 119, 167, 188, 191, 192
FOR A LIST OF RELEVANT PATENTS
AND TRADEMARKS PLEASE SEE
CHENTRONICS.COM/LEGAL-NOTICES
iScan®3 MANUAL
PAGE 6 OF 22
ISO 9001 CERTIFIED
DRAWN BY:
AR
ON:2021-MAY-14
LAST REV BY:
AR
ON:2022-AUG-01
DCO No.
14724
DWG. No. MNL-ISCAN3
REV. F
THIS DRAWING OWNED BY CHENTRONICS. IT IS
CONDITIONALLY LOANED AND IS TO BE RETURNED UPON
REQUEST. THE BORROWER BY RECEIVING IT HAS AGREED
NOT TO REPRODUCE NOR COPY IT IN WHOLE OR IN PART NOR
TO FURNISH INFORMATION FROM IT TO OTHERS NOR TO
MAKE ANY USE OF IT THAT IS OR MAY BE INJURIOUS TO
CHENTRONICS. FOR MORE INFORMATION, PLEASE CONTACT
CHENTRONICS AT +1.607.334.5531.
TOLERANCE NOTES
FABRICATED TOLERANCES
≥2 ft (610 mm) ± 0.250 in (6.4 mm)
< 2ft (610 mm) ± 0.125 in (3.2 mm)
MACHINED TOLERANCES
± 0.050 DECIMAL DIM (1 PLACE)
± 0.010 DECIMAL DIM (2 PLACES)
± 0.005 DECIMAL DIM (3 PLACES)
MNL-ISCAN3
LED STATUS INDICATORS; “Ring of Light”:
The iScan®3 Flame Scanner provides visual feedback on flame conditions and system health with a bright
LED display.
Figure 2: LED Status indicator
The “Ring of Light” communicates the scanner’s operating modes, including FLAME SIGNAL STRENGTH,
GAIN LEVEL (the amount of signal amplification), and WARNINGS/FAULTS. This ring aids with “sighting”
the flame, or in other words: proper aiming of the scanner. This must be done carefully to ensure a good
flame signal is present over various operating conditions. With the “Ring of Light,” the operator can quickly
recognize marginal conditions (such as low flame strength and/or high gain).

RELATED DOCUMENT –MUST COMPLY WITH SCHEDULE DOCUMENT(S):
CERT-iS3 MNL, CDM-10000105, 106, 107, 108, 109, 110,
113, 119, 167, 188, 191, 192
FOR A LIST OF RELEVANT PATENTS
AND TRADEMARKS PLEASE SEE
CHENTRONICS.COM/LEGAL-NOTICES
iScan®3 MANUAL
PAGE 7 OF 22
ISO 9001 CERTIFIED
DRAWN BY:
AR
ON:2021-MAY-14
LAST REV BY:
AR
ON:2022-AUG-01
DCO No.
14724
DWG. No. MNL-ISCAN3
REV. F
THIS DRAWING OWNED BY CHENTRONICS. IT IS
CONDITIONALLY LOANED AND IS TO BE RETURNED UPON
REQUEST. THE BORROWER BY RECEIVING IT HAS AGREED
NOT TO REPRODUCE NOR COPY IT IN WHOLE OR IN PART NOR
TO FURNISH INFORMATION FROM IT TO OTHERS NOR TO
MAKE ANY USE OF IT THAT IS OR MAY BE INJURIOUS TO
CHENTRONICS. FOR MORE INFORMATION, PLEASE CONTACT
CHENTRONICS AT +1.607.334.5531.
TOLERANCE NOTES
FABRICATED TOLERANCES
≥2 ft (610 mm) ± 0.250 in (6.4 mm)
< 2ft (610 mm) ± 0.125 in (3.2 mm)
MACHINED TOLERANCES
± 0.050 DECIMAL DIM (1 PLACE)
± 0.010 DECIMAL DIM (2 PLACES)
± 0.005 DECIMAL DIM (3 PLACES)
MNL-ISCAN3
REMOTE FILE SELECT
The Remote File Select feature provides a means for selecting one of the configuration files within the
scanner. Single-Burner, “SB,” models have limited programmability, while Multi-Burner, “MB” models
have a high degree of programmability, as outlined in the table below.
2.2 Thermal Protection
The iScan®3 Flame Scanner has redundant safety features for exposure above the maximum temperature
rating. The modes of operation are described below:
Mode
Internal Temperature (TINT)
4-20 Output Setting
Indicator Light Setting
Relay Operation
Normal
TINT ≤ 95°C
Normal (4-20 mA)
Normal
Normal
Warning
95°C < TINT < 100°C
3mA steady
Alternate left half yellow 0.5s
/ right half yellow 0.5s
Normal
Fault
100°C < TINT ≤ 105°C
2mA steady
Blink yellow 0.5s on 0.5s off
Relays Open and will not
Close
Disable
TINT > 105°C
1mA steady
Yellow Solid
Relays Permanently Open
and will not Close
Scanner PN
USER PROGRAMMABLE FEATURES (with iScan Software)
4-20 mA
Signal
Mapping
4-20 mA
Calibrate
4-20
mA
Gain
Secondary Relay:
Redundant Flame
N.O. or N.C. -or-
Fault N.O. or N.C.
Detection
Settings:
Gain, Freq,
Threshold
Multiple Files
Select
(Max of 4)
Response Times
(Flame On/
Flame Off)
04005000-SB
YES
YES
YES
YES
NO
NO
NO
04005000-MB
YES
YES
YES
YES
YES
YES
YES

RELATED DOCUMENT –MUST COMPLY WITH SCHEDULE DOCUMENT(S):
CERT-iS3 MNL, CDM-10000105, 106, 107, 108, 109, 110,
113, 119, 167, 188, 191, 192
FOR A LIST OF RELEVANT PATENTS
AND TRADEMARKS PLEASE SEE
CHENTRONICS.COM/LEGAL-NOTICES
iScan®3 MANUAL
PAGE 8 OF 22
ISO 9001 CERTIFIED
DRAWN BY:
AR
ON:2021-MAY-14
LAST REV BY:
AR
ON:2022-AUG-01
DCO No.
14724
DWG. No. MNL-ISCAN3
REV. F
THIS DRAWING OWNED BY CHENTRONICS. IT IS
CONDITIONALLY LOANED AND IS TO BE RETURNED UPON
REQUEST. THE BORROWER BY RECEIVING IT HAS AGREED
NOT TO REPRODUCE NOR COPY IT IN WHOLE OR IN PART NOR
TO FURNISH INFORMATION FROM IT TO OTHERS NOR TO
MAKE ANY USE OF IT THAT IS OR MAY BE INJURIOUS TO
CHENTRONICS. FOR MORE INFORMATION, PLEASE CONTACT
CHENTRONICS AT +1.607.334.5531.
TOLERANCE NOTES
FABRICATED TOLERANCES
≥2 ft (610 mm) ± 0.250 in (6.4 mm)
< 2ft (610 mm) ± 0.125 in (3.2 mm)
MACHINED TOLERANCES
± 0.050 DECIMAL DIM (1 PLACE)
± 0.010 DECIMAL DIM (2 PLACES)
± 0.005 DECIMAL DIM (3 PLACES)
MNL-ISCAN3
3.0 Technical Specifications
3.1 Definitions
FLICKER –Flicker or Flicker Frequency refers to the modulation of flame intensity due to micro-explosions.
FDORT –Flame Detector ON Response Time –the period of time from flame intensity rising above the
user-adjustable threshold to flame relay contacts closed.
FDRT –Flame Detector Response Time –the period of time between the loss of a sensed flame and the
signal indicating the absence of flame.
MFFRT –Marginal Flame Fail Response Time –period of time from flame intensity falling below the user
adjustable threshold to the flame relay contacts open.
ROL –Ring of Light –multi-colored LED status indication on the back of the scanner.
iScan Software –Flame scanner communications software is used to monitor and configure the iScan®3
Flame Scanner.
GAIN –When a signal is amplified, GAIN is the ratio of the amplified signal relative to the original.
DISCRIMINATION –The ability to distinguish between multiple flames. An example of good discrimination
is when the MB scanner is able to recognize a pilot flame with another burner’s main fuel flame in the
background. The status of the background Flames does not affect the ability to detect the pilot flame (ON
or OFF).
3.2 Specification Table
Part Number(s)
PN 04005000-SB, 04005000-MB
Area Classification
Input Cable
Quick Disconnect - Separate Cable
Weight
2.25 lb. (1.02 kg)
Mounting
1” NPT

RELATED DOCUMENT –MUST COMPLY WITH SCHEDULE DOCUMENT(S):
CERT-iS3 MNL, CDM-10000105, 106, 107, 108, 109, 110,
113, 119, 167, 188, 191, 192
FOR A LIST OF RELEVANT PATENTS
AND TRADEMARKS PLEASE SEE
CHENTRONICS.COM/LEGAL-NOTICES
iScan®3 MANUAL
PAGE 9 OF 22
ISO 9001 CERTIFIED
DRAWN BY:
AR
ON:2021-MAY-14
LAST REV BY:
AR
ON:2022-AUG-01
DCO No.
14724
DWG. No. MNL-ISCAN3
REV. F
THIS DRAWING OWNED BY CHENTRONICS. IT IS
CONDITIONALLY LOANED AND IS TO BE RETURNED UPON
REQUEST. THE BORROWER BY RECEIVING IT HAS AGREED
NOT TO REPRODUCE NOR COPY IT IN WHOLE OR IN PART NOR
TO FURNISH INFORMATION FROM IT TO OTHERS NOR TO
MAKE ANY USE OF IT THAT IS OR MAY BE INJURIOUS TO
CHENTRONICS. FOR MORE INFORMATION, PLEASE CONTACT
CHENTRONICS AT +1.607.334.5531.
TOLERANCE NOTES
FABRICATED TOLERANCES
≥2 ft (610 mm) ± 0.250 in (6.4 mm)
< 2ft (610 mm) ± 0.125 in (3.2 mm)
MACHINED TOLERANCES
± 0.050 DECIMAL DIM (1 PLACE)
± 0.010 DECIMAL DIM (2 PLACES)
± 0.005 DECIMAL DIM (3 PLACES)
MNL-ISCAN3
Purge Air NOTE 1
Flow
Pressure
5 scfm (8.5 Nm3/hr)
5” w.c. (13 mbar)
ROL - Ring of Light
Status Indicator
Color Coded Status
Field of View
6 Degrees
Optics
Quartz Lens
Sensor Type
Solid-State
Sensor Range
300 nm to 750 nm
Communication
USB/RS485: up to 127 scanners, overall length up to a distance of 4000 Ft.
(1200 M).
Temperature
-40°C to 80°C
Humidity
0 to 100% Relative Humidity, Condensing
Input Power NOTE 2
24 VDC, +10%/-15%, 5.28 W (220 mA MAX)
Relay ContactsNOTE 3
Primary Relay with Normally Open and Normally Closed Voltage Free
Contacts (i.e., NO contact closes when a flame is detected, NC opens when a
flame is detected)
Secondary Relay with Voltage-Free Contacts
(configurable as NO Flame Relay or Fault Relay configurable as NO or NC
contacts)
0.250A @ 125 VAC Resistive Load
1.0 A @ 24 VDC Resistive Load
0.5 A @ 48 VDC Resistive Load
Signal Output NOTES 4,5
Output #1, 4–20 mA, Flame Signal
Output # 2, 4-20 mA, Selectable as Gain or Internal Temperature
Maximum Current Loop Resistance = 750 ohms
FDORT (FLAME ON)
Configurable from 1-4 seconds in 1-second increments
FDRT (FLAME OFF)
Configurable from 1-4 seconds in 1-second increments
MFRRT
Configurable from 1-6 seconds in 1-second increments
Safety Integrity Level
(SIL3) Data
PFDAVG = 938.369 X 10-6
λSU = 1.14 X 10-6
λDD = 2.1705 X 10-6
λDU = 0.0219 X 10-6
SFF = 99.1%
Proof Test Interval
time = 1 year (8760 Hrs) NOTE 6

RELATED DOCUMENT –MUST COMPLY WITH SCHEDULE DOCUMENT(S):
CERT-iS3 MNL, CDM-10000105, 106, 107, 108, 109, 110,
113, 119, 167, 188, 191, 192
FOR A LIST OF RELEVANT PATENTS
AND TRADEMARKS PLEASE SEE
CHENTRONICS.COM/LEGAL-NOTICES
iScan®3 MANUAL
PAGE 10 OF 22
ISO 9001 CERTIFIED
DRAWN BY:
AR
ON:2021-MAY-14
LAST REV BY:
AR
ON:2022-AUG-01
DCO No.
14724
DWG. No. MNL-ISCAN3
REV. F
THIS DRAWING OWNED BY CHENTRONICS. IT IS
CONDITIONALLY LOANED AND IS TO BE RETURNED UPON
REQUEST. THE BORROWER BY RECEIVING IT HAS AGREED
NOT TO REPRODUCE NOR COPY IT IN WHOLE OR IN PART NOR
TO FURNISH INFORMATION FROM IT TO OTHERS NOR TO
MAKE ANY USE OF IT THAT IS OR MAY BE INJURIOUS TO
CHENTRONICS. FOR MORE INFORMATION, PLEASE CONTACT
CHENTRONICS AT +1.607.334.5531.
TOLERANCE NOTES
FABRICATED TOLERANCES
≥2 ft (610 mm) ± 0.250 in (6.4 mm)
< 2ft (610 mm) ± 0.125 in (3.2 mm)
MACHINED TOLERANCES
± 0.050 DECIMAL DIM (1 PLACE)
± 0.010 DECIMAL DIM (2 PLACES)
± 0.005 DECIMAL DIM (3 PLACES)
MNL-ISCAN3
Technical Specification NOTES
Note 1 Purge air pressure is the minimum differential pressure required between the purge air
supply pressure at “Y” (scanner connection) and the back pressure.
Note 2 24 VDC Power supply to iScan®3 Flame Scanner must not include any inductive load.
Note 3 To achieve higher relay contact voltages, use iScan®3 Flame Scanner relay contacts to
energize the coil of an interstitial relay.
Note 4 Output for monitoring only. Not to be used to prove flame.
Note 5 4-20 mA outputs are calibrated at the factory to a known load. Monitoring hardware will
have an impact on the current output. For accurate readings, 4-20 mA output(s) should be
calibrated using a milli-ammeter between the scanner’s 4-20 mA output and the monitoring
hardware. For details on executing the calibration procedure, refer to the 4-20 mA settings
section of MNL-iScan Software.
Note 6 SUGGESTED SIL3 PROOF TESTS:
An annual proof test is a good practice to meet the requirements of IEC61508. According
to section 7.4.3.2.2 f of IEC61508, proof tests shall be undertaken to reveal dangerous faults
that may be undetected by diagnostics.
Flame OFF: Shut down the burner and ensure the flame off condition is detected and
signaled by the flame detector as a flame off condition.
False Flame: Verify that before start-up (no flame present), there is no indication of a flame
on condition (false flame signal) on the flame scanner (this is typically integrated within the
BMS as a pre-start permissive to prevent start-up if a false flame condition is detected. The
BMS test should not be considered a replacement for recommended testing of the scanner
adjustments, which must be verified each time the scanner is commissioned, adjusted,
settings are changed, or re-commissioning takes place. In these cases, only qualified
personnel who have been trained and are experienced should make such adjustments.
4.0 Wiring Instructions
All wiring shall be done per all applicable local and national codes, standards, and ordinances. The scanner
has a quick connect cable. This cable does not require a flexible conduit if the local authority permits.
Connections for power, Earth Ground, and Flame Relay (N.O. and Common) are needed for all
applications. Use of the 4-20 mA outputs and Communication connections are “as required” for each
application.

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iScan®3 MANUAL
PAGE 11 OF 22
ISO 9001 CERTIFIED
DRAWN BY:
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ON:2021-MAY-14
LAST REV BY:
AR
ON:2022-AUG-01
DCO No.
14724
DWG. No. MNL-ISCAN3
REV. F
THIS DRAWING OWNED BY CHENTRONICS. IT IS
CONDITIONALLY LOANED AND IS TO BE RETURNED UPON
REQUEST. THE BORROWER BY RECEIVING IT HAS AGREED
NOT TO REPRODUCE NOR COPY IT IN WHOLE OR IN PART NOR
TO FURNISH INFORMATION FROM IT TO OTHERS NOR TO
MAKE ANY USE OF IT THAT IS OR MAY BE INJURIOUS TO
CHENTRONICS. FOR MORE INFORMATION, PLEASE CONTACT
CHENTRONICS AT +1.607.334.5531.
TOLERANCE NOTES
FABRICATED TOLERANCES
≥2 ft (610 mm) ± 0.250 in (6.4 mm)
< 2ft (610 mm) ± 0.125 in (3.2 mm)
MACHINED TOLERANCES
± 0.050 DECIMAL DIM (1 PLACE)
± 0.010 DECIMAL DIM (2 PLACES)
± 0.005 DECIMAL DIM (3 PLACES)
MNL-ISCAN3
4.1 Wiring Diagram
Figure 3: Wiring Diagram
Wiring Notes
Note 1 If more than one 24 VDC supply is required, the 24 VDC returns labeled as “DC (-)” shall be
connected to each other.
Note 2 If more than one 24 VDC supply is required, the 24 VDC source connections labeled “DC (+)”
shall be isolated from all other power supplies. If switching power supplies are used, the
supplies may be connected via a wired OR diode configuration. NOTE: the BLOCKING DIODE

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FOR A LIST OF RELEVANT PATENTS
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CHENTRONICS.COM/LEGAL-NOTICES
iScan®3 MANUAL
PAGE 12 OF 22
ISO 9001 CERTIFIED
DRAWN BY:
AR
ON:2021-MAY-14
LAST REV BY:
AR
ON:2022-AUG-01
DCO No.
14724
DWG. No. MNL-ISCAN3
REV. F
THIS DRAWING OWNED BY CHENTRONICS. IT IS
CONDITIONALLY LOANED AND IS TO BE RETURNED UPON
REQUEST. THE BORROWER BY RECEIVING IT HAS AGREED
NOT TO REPRODUCE NOR COPY IT IN WHOLE OR IN PART NOR
TO FURNISH INFORMATION FROM IT TO OTHERS NOR TO
MAKE ANY USE OF IT THAT IS OR MAY BE INJURIOUS TO
CHENTRONICS. FOR MORE INFORMATION, PLEASE CONTACT
CHENTRONICS AT +1.607.334.5531.
TOLERANCE NOTES
FABRICATED TOLERANCES
≥2 ft (610 mm) ± 0.250 in (6.4 mm)
< 2ft (610 mm) ± 0.125 in (3.2 mm)
MACHINED TOLERANCES
± 0.050 DECIMAL DIM (1 PLACE)
± 0.010 DECIMAL DIM (2 PLACES)
± 0.005 DECIMAL DIM (3 PLACES)
MNL-ISCAN3
must be rated for a minimum of 50 volts and 10 Amps. To achieve higher relay contact
voltages, use iScan®3 Flame Scanner relay contacts to energize the coil of an interstitial relay.
Note 3 The 24 VDC return, “DC (-),” shall be used as the low side of the File Select relays.
Note 4 The 24 VDC return, “DC (-),” is the return for the 4–20 mA output loop(s). Input must be
isolated type. The maximum current loop resistance is 750 ohms.
Note 5 Connect the scanner Earth GND (Green/Yellow, 8, <H>) to EARTH GROUND. A short-BRAIDED
CONDUCTOR (alternately a short AWG #12 wire) is recommended.
Note 6 All shields are tied to Earth Ground in the Control Panel only.
Figure 4: Earthing instructions
Earth GND
GREEN/YELLOW (8) <H> CONNECT TO EARTH
GROUND. (See section on grounding methods)
CONNECT ALL SHIELDS AT ONE END ONLY TO EARTH GROUND.
DO NOT GROUND SHIELDS AT THE LOCAL JUNCTION BOX.
Earth Ground
Located at CONTROL PANEL
ALL OTHER CONNECTIONS

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iScan®3 MANUAL
PAGE 13 OF 22
ISO 9001 CERTIFIED
DRAWN BY:
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ON:2021-MAY-14
LAST REV BY:
AR
ON:2022-AUG-01
DCO No.
14724
DWG. No. MNL-ISCAN3
REV. F
THIS DRAWING OWNED BY CHENTRONICS. IT IS
CONDITIONALLY LOANED AND IS TO BE RETURNED UPON
REQUEST. THE BORROWER BY RECEIVING IT HAS AGREED
NOT TO REPRODUCE NOR COPY IT IN WHOLE OR IN PART NOR
TO FURNISH INFORMATION FROM IT TO OTHERS NOR TO
MAKE ANY USE OF IT THAT IS OR MAY BE INJURIOUS TO
CHENTRONICS. FOR MORE INFORMATION, PLEASE CONTACT
CHENTRONICS AT +1.607.334.5531.
TOLERANCE NOTES
FABRICATED TOLERANCES
≥2 ft (610 mm) ± 0.250 in (6.4 mm)
< 2ft (610 mm) ± 0.125 in (3.2 mm)
MACHINED TOLERANCES
± 0.050 DECIMAL DIM (1 PLACE)
± 0.010 DECIMAL DIM (2 PLACES)
± 0.005 DECIMAL DIM (3 PLACES)
MNL-ISCAN3
•Les interférences électriques provenant de sources d'allumage haute tension / énergie peuvent nuire au bon
fonctionnement du scanner à flamme. Pour minimiser les risques d'interférences électriques avec le
fonctionnement du scanner à flamme:
•Ne pas installer les câbles d'allumage dans le même conduit que les câbles du scanner
•Les systèmes d'allumage doivent avoir un retour dédié
•Ne pas montez de transformateur d'allumage dans le même boîtier que le câblage du scanner à flamme
•Les câbles d’allumage doivent être acheminés à au moins 12 pouces (305 mm) du câblage du scanner en tout
temps.
•iScan3 est conforme à la norme IEC 61000-4-3 (Immunité par rayonnement RF).
•Electrical noise interference from high voltage/energy ignition sources can adversely affect the operation of
the flame scanner. To minimize the possibility of electrical noise interfering with the operation of the flame
scanner:
•Do not install ignition wires in the same conduit as the scanner wires.
•Ignition Systems shall have a dedicated return.
•Do not mount an ignition transformer in the same enclosure where the flame scanner wiring is terminated.
•Ignition cables shall be routed a minimum of 12” (305mm) from scanner wiring.
•IScan®3 Flame Scanner complies with IEC 61000-4-3 (RF Radiated Immunity).

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PAGE 14 OF 22
ISO 9001 CERTIFIED
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ON:2021-MAY-14
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AR
ON:2022-AUG-01
DCO No.
14724
DWG. No. MNL-ISCAN3
REV. F
THIS DRAWING OWNED BY CHENTRONICS. IT IS
CONDITIONALLY LOANED AND IS TO BE RETURNED UPON
REQUEST. THE BORROWER BY RECEIVING IT HAS AGREED
NOT TO REPRODUCE NOR COPY IT IN WHOLE OR IN PART NOR
TO FURNISH INFORMATION FROM IT TO OTHERS NOR TO
MAKE ANY USE OF IT THAT IS OR MAY BE INJURIOUS TO
CHENTRONICS. FOR MORE INFORMATION, PLEASE CONTACT
CHENTRONICS AT +1.607.334.5531.
TOLERANCE NOTES
FABRICATED TOLERANCES
≥2 ft (610 mm) ± 0.250 in (6.4 mm)
< 2ft (610 mm) ± 0.125 in (3.2 mm)
MACHINED TOLERANCES
± 0.050 DECIMAL DIM (1 PLACE)
± 0.010 DECIMAL DIM (2 PLACES)
± 0.005 DECIMAL DIM (3 PLACES)
MNL-ISCAN3
4.2 Cable Connection
Figure 5: PN: 04005000-SB/MB with locking nut and I/o cable
4.3 Power/Control Cable Installation
The iScan®3 Flame Scanner system utilizes a quick disconnect connector to connect the power/control
cable to the electronics.
To connect the power cable to the electronics, turn the locking nut clockwise by hand until it is seated
against the electronics. This will ensure the locking nut is not too far out and allow the connector to
properly seat. Then, align the connector on the cable with the connector on the electronics, insert the
connector, and turn the outer barrel clockwise until the banjo fittings on the connector are seated and
latched.
Figure 6: Clear the locking nut, then align and insert the cable connector.
04005000
LOCKING NUT
03005000
LOCKING NUT
(TURN CLOCKWISE
UNTIL SEATED)

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CHENTRONICS.COM/LEGAL-NOTICES
iScan®3 MANUAL
PAGE 15 OF 22
ISO 9001 CERTIFIED
DRAWN BY:
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ON:2021-MAY-14
LAST REV BY:
AR
ON:2022-AUG-01
DCO No.
14724
DWG. No. MNL-ISCAN3
REV. F
THIS DRAWING OWNED BY CHENTRONICS. IT IS
CONDITIONALLY LOANED AND IS TO BE RETURNED UPON
REQUEST. THE BORROWER BY RECEIVING IT HAS AGREED
NOT TO REPRODUCE NOR COPY IT IN WHOLE OR IN PART NOR
TO FURNISH INFORMATION FROM IT TO OTHERS NOR TO
MAKE ANY USE OF IT THAT IS OR MAY BE INJURIOUS TO
CHENTRONICS. FOR MORE INFORMATION, PLEASE CONTACT
CHENTRONICS AT +1.607.334.5531.
TOLERANCE NOTES
FABRICATED TOLERANCES
≥2 ft (610 mm) ± 0.250 in (6.4 mm)
< 2ft (610 mm) ± 0.125 in (3.2 mm)
MACHINED TOLERANCES
± 0.050 DECIMAL DIM (1 PLACE)
± 0.010 DECIMAL DIM (2 PLACES)
± 0.005 DECIMAL DIM (3 PLACES)
MNL-ISCAN3
4.4 Locking Nut Installation
The equipment features a locking nut that locks the cable to the equipment so that it may not be removed
without a tool. This feature is required for some hazardous area installations. To lock the connector in
place, turn the locking nut counter-clockwise and tighten to a torque of 10ftlbs using a wrench. See Figure
7 and Figure 8 for illustrations of locking nut tightening. To remove the cable, turn the locking nut
clockwise until it is seated against the electronics, then remove the cable connector by rotating the outer
barrel counter-clockwise until the banjo fittings unseat and the connector can be removed.
Figure 7: Seat the connector and turn the Locknut against the connector barrel.
Figure 8: Tighten Locking nut against connector barrel
EXPLOSION HAZARD
Do not connect or disconnect when energized
LOCKING NUT
LOCKING NUT

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iScan®3 MANUAL
PAGE 16 OF 22
ISO 9001 CERTIFIED
DRAWN BY:
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ON:2021-MAY-14
LAST REV BY:
AR
ON:2022-AUG-01
DCO No.
14724
DWG. No. MNL-ISCAN3
REV. F
THIS DRAWING OWNED BY CHENTRONICS. IT IS
CONDITIONALLY LOANED AND IS TO BE RETURNED UPON
REQUEST. THE BORROWER BY RECEIVING IT HAS AGREED
NOT TO REPRODUCE NOR COPY IT IN WHOLE OR IN PART NOR
TO FURNISH INFORMATION FROM IT TO OTHERS NOR TO
MAKE ANY USE OF IT THAT IS OR MAY BE INJURIOUS TO
CHENTRONICS. FOR MORE INFORMATION, PLEASE CONTACT
CHENTRONICS AT +1.607.334.5531.
TOLERANCE NOTES
FABRICATED TOLERANCES
≥2 ft (610 mm) ± 0.250 in (6.4 mm)
< 2ft (610 mm) ± 0.125 in (3.2 mm)
MACHINED TOLERANCES
± 0.050 DECIMAL DIM (1 PLACE)
± 0.010 DECIMAL DIM (2 PLACES)
± 0.005 DECIMAL DIM (3 PLACES)
MNL-ISCAN3
RISQUE D’EXPLOSION
Ne pas connecter ou débrancher lorsquéénérgé
4.5 Communications Wiring
RS-485
Communication with the iScan®3 Flame Scanner is RS-485 via a USB to RS-485 Converter (PN 3425-057-
01). RS-485 is a differential multi-drop network. For iScan®3 Flame Scanner, the network is a half-duplex,
2-wire, echo-off configuration operating at 19200 KBAUD. The maximum allowable number of nodes on
a given section of the network is 32, including the USB to RS-485 converter and any repeaters. If more
than 32 loads are connected (1 USB converter, 1 RS-485 repeater, and 30 iScan3s), then an RS-485
repeater is required between sections to boost the signal. The repeater must be compatible with the EIA-
485 standard, have input to output DC isolation, operate on 24VDC over the operating temperature range
of 0°C to +70°C, and have agency approvals sufficient to meet the area classification.
NOTE: When calculating 32 loads, include the USB to RS-485 converter and the number of
repeaters in a section). For the extended sections, up to 30 iScan3s may be connected. The
maximum length of any given section is 4000 FT (1200 M).
B&B Electronics 485 repeater model 485OPDRI-PH meets these requirements. Additional repeaters may
be added to extend the network to 127 scanners. If using the B&B Electronics 485 repeater model
mentioned above, configure the DIP switches on ports as follows:
1
2
3
4
5
6
7
8
ON
ON
ON
ON
OFF
OFF
ON
OFF
Since there is no dedicated signal reference, the 24 VDC return labeled as DC (-) is used. The USB to RS-
485 and the Repeaters must also have their GND terminals connected to the DC (-). Failure to provide the
signal reference may result in communication errors and potentially damage the iScan®3 Flame Scanner.
The recommended topology is “Daisy Chain,” as shown in the wiring diagrams below. A split or Y
configuration is acceptable. NO OTHER CONFIGURATION IS ACCEPTABLE. Please refer to the EIA-485
specification for further information on RS-485 networks

RELATED DOCUMENT –MUST COMPLY WITH SCHEDULE DOCUMENT(S):
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113, 119, 167, 188, 191, 192
FOR A LIST OF RELEVANT PATENTS
AND TRADEMARKS PLEASE SEE
CHENTRONICS.COM/LEGAL-NOTICES
iScan®3 MANUAL
PAGE 17 OF 22
ISO 9001 CERTIFIED
DRAWN BY:
AR
ON:2021-MAY-14
LAST REV BY:
AR
ON:2022-AUG-01
DCO No.
14724
DWG. No. MNL-ISCAN3
REV. F
THIS DRAWING OWNED BY CHENTRONICS. IT IS
CONDITIONALLY LOANED AND IS TO BE RETURNED UPON
REQUEST. THE BORROWER BY RECEIVING IT HAS AGREED
NOT TO REPRODUCE NOR COPY IT IN WHOLE OR IN PART NOR
TO FURNISH INFORMATION FROM IT TO OTHERS NOR TO
MAKE ANY USE OF IT THAT IS OR MAY BE INJURIOUS TO
CHENTRONICS. FOR MORE INFORMATION, PLEASE CONTACT
CHENTRONICS AT +1.607.334.5531.
TOLERANCE NOTES
FABRICATED TOLERANCES
≥2 ft (610 mm) ± 0.250 in (6.4 mm)
< 2ft (610 mm) ± 0.125 in (3.2 mm)
MACHINED TOLERANCES
± 0.050 DECIMAL DIM (1 PLACE)
± 0.010 DECIMAL DIM (2 PLACES)
± 0.005 DECIMAL DIM (3 PLACES)
MNL-ISCAN3
4.6 “Daisy Chain” Configuration
COMMUNICATION WIRING SUMMARY:
•Wiring must be twisted pair shielded cable. Ground the shield only at the control panel to prevent ground loops.
•Use only “Daisy Chain” or “Y” configurations. Connect all of the “Com A” wires together. Connect all of the “Com B” wires together. Make
sure that the “Com A” and “Com B” wires are connected to the correct terminals on the converter.
•An RS-485 repeater is required for every 30 scanners or 4000 ft (1200 m) of length for a maximum of 127 scanners in a network.
•Ensure the DC (-) of all scanners are tied together as a reference for RS-485 communications. The GND terminal of the USB to RS-485
converter and the repeaters must also be connected to the DC (-) of the scanners.

RELATED DOCUMENT –MUST COMPLY WITH SCHEDULE DOCUMENT(S):
CERT-iS3 MNL, CDM-10000105, 106, 107, 108, 109, 110,
113, 119, 167, 188, 191, 192
FOR A LIST OF RELEVANT PATENTS
AND TRADEMARKS PLEASE SEE
CHENTRONICS.COM/LEGAL-NOTICES
iScan®3 MANUAL
PAGE 18 OF 22
ISO 9001 CERTIFIED
DRAWN BY:
AR
ON:2021-MAY-14
LAST REV BY:
AR
ON:2022-AUG-01
DCO No.
14724
DWG. No. MNL-ISCAN3
REV. F
THIS DRAWING OWNED BY CHENTRONICS. IT IS
CONDITIONALLY LOANED AND IS TO BE RETURNED UPON
REQUEST. THE BORROWER BY RECEIVING IT HAS AGREED
NOT TO REPRODUCE NOR COPY IT IN WHOLE OR IN PART NOR
TO FURNISH INFORMATION FROM IT TO OTHERS NOR TO
MAKE ANY USE OF IT THAT IS OR MAY BE INJURIOUS TO
CHENTRONICS. FOR MORE INFORMATION, PLEASE CONTACT
CHENTRONICS AT +1.607.334.5531.
TOLERANCE NOTES
FABRICATED TOLERANCES
≥2 ft (610 mm) ± 0.250 in (6.4 mm)
< 2ft (610 mm) ± 0.125 in (3.2 mm)
MACHINED TOLERANCES
± 0.050 DECIMAL DIM (1 PLACE)
± 0.010 DECIMAL DIM (2 PLACES)
± 0.005 DECIMAL DIM (3 PLACES)
MNL-ISCAN3
4.7 “Split or Y Chain” Configuration

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PAGE 19 OF 22
ISO 9001 CERTIFIED
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ON:2021-MAY-14
LAST REV BY:
AR
ON:2022-AUG-01
DCO No.
14724
DWG. No. MNL-ISCAN3
REV. F
THIS DRAWING OWNED BY CHENTRONICS. IT IS
CONDITIONALLY LOANED AND IS TO BE RETURNED UPON
REQUEST. THE BORROWER BY RECEIVING IT HAS AGREED
NOT TO REPRODUCE NOR COPY IT IN WHOLE OR IN PART NOR
TO FURNISH INFORMATION FROM IT TO OTHERS NOR TO
MAKE ANY USE OF IT THAT IS OR MAY BE INJURIOUS TO
CHENTRONICS. FOR MORE INFORMATION, PLEASE CONTACT
CHENTRONICS AT +1.607.334.5531.
TOLERANCE NOTES
FABRICATED TOLERANCES
≥2 ft (610 mm) ± 0.250 in (6.4 mm)
< 2ft (610 mm) ± 0.125 in (3.2 mm)
MACHINED TOLERANCES
± 0.050 DECIMAL DIM (1 PLACE)
± 0.010 DECIMAL DIM (2 PLACES)
± 0.005 DECIMAL DIM (3 PLACES)
MNL-ISCAN3
4.8 Remote File Select
The Remote File Select feature provides a means for automatically selecting one of the configuration files
resident within the scanner. IScan®3 Flame Scanner has a two- or four-wire option to remotely select files.
File select configurations are wire fault protected, meaning if any wire combination is broken, i.e., loose
wire connection or a wire gets cut, the scanner will fault. Switching must occur in less than 800ms. Per
NFPA, file selects must not be used to “blind” the scanner from seeing flame to obtain a start permissive.
FOUR WIRE CONFIGURATION: USES TWO RELAYS
File Select
SEL 3
SEL 2
SEL 1
SEL 0
A
N.O. CLOSED to C
OPEN
N.O. CLOSED to C
OPEN
B
OPEN
N.C. CLOSED to C
N.O. CLOSED to C
OPEN
C
OPEN
N.C. CLOSED to C
OPEN
N.C. CLOSED to C
D
N.O. CLOSED to C
OPEN
OPEN
N.C. CLOSED to C
TWO WIRE CONFIGURATION: USES ONE RELAY
File Select
SEL 1
SEL 0
B
N.O. CLOSED to C
OPEN
C
OPEN
N.C. CLOSED to C
Note: Connect iScan®3 Flame Scanner SEL (File Select) wires via dry relays contacts (supplied by others)
per above. Connect the common (C) side of the File Select relays to the -24 VDC return. Remote File
Select must be enabled; otherwise, SEL inputs are ignored. Refer to the Remote File Select (RFS) section
of MNL-iScan Software for instructions on setting up and using the Remote File Select feature

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FOR A LIST OF RELEVANT PATENTS
AND TRADEMARKS PLEASE SEE
CHENTRONICS.COM/LEGAL-NOTICES
iScan®3 MANUAL
PAGE 20 OF 22
ISO 9001 CERTIFIED
DRAWN BY:
AR
ON:2021-MAY-14
LAST REV BY:
AR
ON:2022-AUG-01
DCO No.
14724
DWG. No. MNL-ISCAN3
REV. F
THIS DRAWING OWNED BY CHENTRONICS. IT IS
CONDITIONALLY LOANED AND IS TO BE RETURNED UPON
REQUEST. THE BORROWER BY RECEIVING IT HAS AGREED
NOT TO REPRODUCE NOR COPY IT IN WHOLE OR IN PART NOR
TO FURNISH INFORMATION FROM IT TO OTHERS NOR TO
MAKE ANY USE OF IT THAT IS OR MAY BE INJURIOUS TO
CHENTRONICS. FOR MORE INFORMATION, PLEASE CONTACT
CHENTRONICS AT +1.607.334.5531.
TOLERANCE NOTES
FABRICATED TOLERANCES
≥2 ft (610 mm) ± 0.250 in (6.4 mm)
< 2ft (610 mm) ± 0.125 in (3.2 mm)
MACHINED TOLERANCES
± 0.050 DECIMAL DIM (1 PLACE)
± 0.010 DECIMAL DIM (2 PLACES)
± 0.005 DECIMAL DIM (3 PLACES)
MNL-ISCAN3
5.0 Sighting The Scanner
EXPLOSION HAZARD
Do not connect or disconnect when energized
RISQUE D’EXPLOSION
Ne pas connecter ou débrancher lorsquéénérgé
Proper flame sighting is required for proper flame scanner detection and discrimination. The view through
the sighting port should be the full flame, as illustrated below.
CORRECT INCORRECT
Figure 9: PN: 04005000-SB/MB