Chentronics IS3-MB User manual

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ISCAN3 MANUAL
PAGE 1 OF 28
ISO 9001 CERTIFIED
DRAWN BY:
AR
ON:
7/8/19
LAST REV BY:
ON:
DCO No.
12804
DWG. No. MNL-ISCAN3
REV. C
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
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 or death or damage to equipment.
Applicable Scanner Part Numbers
Contact Technical Support +1.866.821.5504 with any questions.
PART NUMBER
MODEL
AREA CLASSIFICATION
TEMP
RATING
FEATURE
CONNECTOR
PINS
04004999-MB
iS3-MB
CLASS I/DIV II
-40°C to 80°C
Fully Programmable –Must Be
Configured Prior to Use
16
04004999-SB
iS3-SB
CLASS I/DIV II
-40°C to 80°C
Limited Programmability
16
04005000-MB
iS3Z-MB
CLASS I/DIV II/ZONE 2/ATEX
-40°C to 80°C
Fully Programmable –Must Be
Configured Prior to Use
16
04005000-SB
iS3Z-SB
CLASS I/DIV II/ZONE 2/ATEX
-40°C to 80°C
Limited Programmability
16

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PAGE 2 OF 28
ISO 9001 CERTIFIED
DRAWN BY:
AR
ON:
7/8/19
LAST REV BY:
ON:
DCO No.
12804
DWG. No. MNL-ISCAN3
REV. C
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
IMPORTANT SAFETY INFORMATION ......................................................................................................................3
CUSTOMER SUPPORT.............................................................................................................................................5
PRODUCT FEATURES..............................................................................................................................................6
EASE OF INSTALLATION....................................................................................................................................................6
THERMAL PROTECTION....................................................................................................................................................9
TECHNICAL SPECIFICATIONS ................................................................................................................................ 10
DEFINITIONS................................................................................................................................................................10
SPECIFICATION TABLE....................................................................................................................................................11
Technical Specification NOTES ............................................................................................................................12
DEFAULT CONFIGURATION (SETTINGS).............................................................................................................................13
WIRING INSTRUCTIONS ....................................................................................................................................... 15
WIRING DIAGRAM........................................................................................................................................................15
Wiring Notes .......................................................................................................................................................16
CABLE CONNECTION .....................................................................................................................................................18
POWER/CONTROL CABLE INSTALLATION...........................................................................................................................18
LOCKING NUT INSTALLATION ..........................................................................................................................................19
COMMUNICATIONS WIRING................................................................................................................................ 20
RS-485 .....................................................................................................................................................................20
“DAISY CHAIN”CONFIGURATION ....................................................................................................................................22
SPLIT OR “Y” CONFIGURATION........................................................................................................................................23
REMOTE FILE SELECT.....................................................................................................................................................24
SIGHTING THE SCANNER...................................................................................................................................... 25
FLAME LINE OF SIGHT ...................................................................................................................................................26
RING OF LIGHT SCANNER STATUS DISPLAY ........................................................................................................................26
CLEANING THE LENS......................................................................................................................................................27
SPECIAL,“X”, CONDITIONS OF USE..................................................................................................................................28

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PAGE 3 OF 28
ISO 9001 CERTIFIED
DRAWN BY:
AR
ON:
7/8/19
LAST REV BY:
ON:
DCO No.
12804
DWG. No. MNL-ISCAN3
REV. C
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
IMPORTANT SAFETY INFORMATION
Read All Instructions before Using Equipment
The instructions provided in this manual have been prepared to 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
current national, state, local and company safety regulations at all times.
Safety Symbols used in this manual comply with ISO 3864.
THESE SYMBOLS ARE USED TO ALERT YOU TO 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 serious injury.
Indicates a hazard with a medium level of risk which, if not
avoided could result in death or serious injury.
Indicates a hazard with a low level of risk which, if not avoided
will result in minor or moderate injury.

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PAGE 4 OF 28
ISO 9001 CERTIFIED
DRAWN BY:
AR
ON:
7/8/19
LAST REV BY:
ON:
DCO No.
12804
DWG. No. MNL-ISCAN3
REV. C
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 in accordance with applicable 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, 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.

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PAGE 5 OF 28
ISO 9001 CERTIFIED
DRAWN BY:
AR
ON:
7/8/19
LAST REV BY:
ON:
DCO No.
12804
DWG. No. MNL-ISCAN3
REV. C
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.
TENSION DANGEREUSE
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
Customer Support
For Technical Support
Inside USA Call: 866.821.5504
Outside USA Call: +1.607.334.5531
Website: www.chentronics.com

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ISCAN3 MANUAL
PAGE 6 OF 28
ISO 9001 CERTIFIED
DRAWN BY:
AR
ON:
7/8/19
LAST REV BY:
ON:
DCO No.
12804
DWG. No. MNL-ISCAN3
REV. C
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
Product Features
The iScan3 flame scanner is designed to detect flame from fossil fuels such as natural gas, refinery gas,
waste gas, fuel oils, biomass and coals. The iScan3 consists of an integrated viewing head and signal
processor. No secondary signal processor or amplifier is required.
Ease of Installation
QUICK-CONNECT BURNER MOUNT:
The simple cam-and-groove mechanism allows for quick mounting, release, and rotation of the scanner.
PN: 04004999-SB/MB
PN: 04005000-SB/MB

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PAGE 7 OF 28
ISO 9001 CERTIFIED
DRAWN BY:
AR
ON:
7/8/19
LAST REV BY:
ON:
DCO No.
12804
DWG. No. MNL-ISCAN3
REV. C
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 iScan3 provides visual feedback of flame conditions and system health with a bright LED display.
PN: 04004999-SB/MB
PN: 04005000-MB/SB

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PAGE 8 OF 28
ISO 9001 CERTIFIED
DRAWN BY:
AR
ON:
7/8/19
LAST REV BY:
ON:
DCO No.
12804
DWG. No. MNL-ISCAN3
REV. C
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
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 with care to ensure that a good flame signal is present over a range of operating
conditions. With the “Ring of Light”, the operator can quickly recognize marginal conditions
(such as low flame strength and/or high gain).
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.

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PAGE 9 OF 28
ISO 9001 CERTIFIED
DRAWN BY:
AR
ON:
7/8/19
LAST REV BY:
ON:
DCO No.
12804
DWG. No. MNL-ISCAN3
REV. C
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
Thermal Protection
The iScan3 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
PART
NUMBER
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.
DETECTIO
N
SETTINGS:
Gain, Freq,
Threshold
MULTIPLE
SETUP
FILES
(max of 4)
RESPONSE
TIMES
(FLAME
ON/
FLAME
OFF)
04004999-SB
YES
YES
YES
YES
NO
NO
NO
04004999-MB
YES
YES
YES
YES
YES
YES
YES
04005000-SB
YES
YES
YES
YES
NO
NO
NO
04005000-MB
YES
YES
YES
YES
YES
YES
YES

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PAGE 10 OF 28
ISO 9001 CERTIFIED
DRAWN BY:
AR
ON:
7/8/19
LAST REV BY:
ON:
DCO No.
12804
DWG. No. MNL-ISCAN3
REV. C
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 Specifications
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 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 used to monitor and configure the
iScan3 device.
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 other 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).

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PAGE 11 OF 28
ISO 9001 CERTIFIED
DRAWN BY:
AR
ON:
7/8/19
LAST REV BY:
ON:
DCO No.
12804
DWG. No. MNL-ISCAN3
REV. C
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
Specification Table
Part Number(s)
PN 04004999-SB, 04004999-MB
Area Classification
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(F)
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)

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PAGE 12 OF 28
ISO 9001 CERTIFIED
DRAWN BY:
AR
ON:
7/8/19
LAST REV BY:
ON:
DCO No.
12804
DWG. No. MNL-ISCAN3
REV. C
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
Relay Contacts NOTE 3
Primary Relay with Normally Open and Normally Closed Voltage Free Contacts (i.e. NO
contact closes when flame is detected, NC opens when flame is detected)
Secondary Relay with Voltage Free Contacts
(configurable as NO Flame Relay or Fault Relay configurable as NO or NC contacts)
0.125A @ 250 VAC Resistive Load
0.250A @ 125 VAC Resistive Load
1.0 A @ 24 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
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 iScan3 must not include any inductive load.
Note 3 To achieve higher relay contact voltages, use iScan3 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 of 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.
Refer to the 4-20 ma Settings section MNL- iScan Software for details on how to execute the
calibration procedure.
Note 6 SUGGESTED SIL3 PROOF TESTS:
An annual proof test is good practice to meet the requirements in terms of IEC61508.
According to section 7.4.3.2.2 f of IEC61508 proof tests shall be undertaken to reveal
dangerous faults which may be undetected by diagnostics test.
Flame OFF: Shutdown the burner and ensure that the flame off condition is detected and
signaled by the flame detector as a flame off condition.

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PAGE 13 OF 28
ISO 9001 CERTIFIED
DRAWN BY:
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ON:
7/8/19
LAST REV BY:
ON:
DCO No.
12804
DWG. No. MNL-ISCAN3
REV. C
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
False Flame: Verify that prior to 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. This should not be considered a replacement for recommended testing of the
scanner adjustments which are required to 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.
Default Configuration (Settings)
As part of setup in iScanSoftware, each scanner is assigned unique addresses.
Flame Detector On Response Time (FDORT)
2 seconds nominal
Flame Detector Response Time (FDRT)
1 second nominal
Marginal Flame Failure Response Time (MFFRT)
2 seconds nominal
Gain Configuration
Manual
Gain Channel
High
Signal Gain
3.5
Flame Flicker Frequency
26 Hz
Flame Flicker Bandwidth
12 Hz
Flame Flicker Threshold
-45 dB
Mains Filter
Enabled
Rail Filter
Enabled
Solar Filter
Enabled
Flame Filter
Enabled
The following settings apply to the overall scanner and not to an individual scanner file:
Communications Address
COMM 1NOTE 1
Active File
A
Remote File Select
Disabled
Multiple Fuels
Disabled

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PAGE 14 OF 28
ISO 9001 CERTIFIED
DRAWN BY:
AR
ON:
7/8/19
LAST REV BY:
ON:
DCO No.
12804
DWG. No. MNL-ISCAN3
REV. C
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 To 20 mA Gain
1 mA/dB above
threshold

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PAGE 15 OF 28
ISO 9001 CERTIFIED
DRAWN BY:
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ON:
7/8/19
LAST REV BY:
ON:
DCO No.
12804
DWG. No. MNL-ISCAN3
REV. C
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
Wiring Instructions
All wiring shall be done in accordance with 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 permitted by local authority. Connections for power, Earth Ground, and Flame Relay
(N.O. and Common) are required for all applications. Use of the 4-20 mA outputs,
Communications, and connections are “as-required” for each application.
Wiring Diagram

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PAGE 16 OF 28
ISO 9001 CERTIFIED
DRAWN BY:
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ON:
7/8/19
LAST REV BY:
ON:
DCO No.
12804
DWG. No. MNL-ISCAN3
REV. C
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
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
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 as “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 must be rated
for a minimum of 50 volts and 10 Amps.
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. 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.

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PAGE 17 OF 28
ISO 9001 CERTIFIED
DRAWN BY:
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ON:
7/8/19
LAST REV BY:
ON:
DCO No.
12804
DWG. No. MNL-ISCAN3
REV. C
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
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 at all times.
•iScan3 complies with IEC 61000-4-3 (RF Radiated Immunity).
•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 montez pas 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).

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PAGE 18 OF 28
ISO 9001 CERTIFIED
DRAWN BY:
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ON:
7/8/19
LAST REV BY:
ON:
DCO No.
12804
DWG. No. MNL-ISCAN3
REV. C
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
Cable Connection
Power/Control Cable Installation
The iScan3 system utilizes a quick disconnect connector to connect the power/control cable to the
electronics.
To connect the power cable to the electronics, first 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 will 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 A:CLEAR THE LOCKING NUT THEN ALIGN AND INSERT THE CABLE CONNECTOR.

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PAGE 19 OF 28
ISO 9001 CERTIFIED
DRAWN BY:
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ON:
7/8/19
LAST REV BY:
ON:
DCO No.
12804
DWG. No. MNL-ISCAN3
REV. C
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
Locking Nut Installation
The equipment features a locking nut that locks the cable to the equipment so that it may not be
removed without the use of a tool. This feature is required for some hazardous area installations. To
lock the connector in place, turn the locking nut counter-clockwise tighten to a torque of 10ftlbs using a
wrench. See Figure B and Figure C for illustration 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
turning the outer barrel counter clockwise until the banjo fittings unseat and the connector unseats and
can be removed.
FIGURE B: SEAT THE CONNECTOR AND SEAT THE LOCKNUT AGAINST THE CONNECTOR BARREL.
FIGURE C: TIGHTEN LOCKING NUT AGAINST CONNECTOR BARREL.

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ISO 9001 CERTIFIED
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ON:
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LAST REV BY:
ON:
DCO No.
12804
DWG. No. MNL-ISCAN3
REV. C
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 CONNECT OR DISCONNECT WHEN ENERGIZED
TENSION DANGEREUSE
NE PAS CONNECTER OU DÉBRANCHER LORSQUE ÉNERGÉ
Communications Wiring
RS-485
Communication with the iScan3 is RS-485 via a USB to RS-485 Converter (PN 3425-057-01). RS-485 is a
differential multi-drop network. For iScan3, 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, must
have input to output DC isolation, must operate on 24VDC over the operating temperature range of -
30°C to +70°C and must 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).