Viking VSF303 User manual

VSF303 Multi Spectrum IR Flame Detector

2
Safety and Technical Manual
Rev: 2
Form No. F_020521
VSF303 Flame Detector
This document is strictly private and confidential, reproduction without Viking Corporation approval is prohibited. © 2021 The Viking Group Inc.
Viking Corporation
5150 Beltway Dr. SE
Caledonia MI 49316
Form No. F_020521 Rev 2
Ref: 3303.0001 Rev: 2.2 ECN:4652

3
Safety and Technical Manual
Rev: 2
Form No. F_020521
VSF303 Flame Detector
This document is strictly private and confidential, reproduction without Viking Corporation approval is prohibited. © 2021 The Viking Group Inc.
HELP US TO HELP YOU
Every effort has been made to ensure the accuracy in the contents of our documents; however,
Viking can assume no responsibility for any errors or omissions in our documents or their
consequences. Viking would greatly appreciate being informed of any errors or omissions that may
be found in our documents.
Please email Viking Technical Services at [e-mail] or call 1-877-354-5464.
Please reference the Form No. and Rev shown in the upper right corner of this page.
THANK YOU
Contents
1Introduction................................................................................................................................5
Detector Features...............................................................................................................5
2Safety Instructions .....................................................................................................................6
Warnings ............................................................................................................................6
Cautions .............................................................................................................................6
Important Safety Notices ....................................................................................................6
EN 54-part 10 Limitation of use ..........................................................................................8
3Installation .................................................................................................................................8
Detector Enclosure .............................................................................................................8
Mounting & Orientation .......................................................................................................8
Wiring Procedure..............................................................................................................10
0-20mA Output .................................................................................................................11
Relay Output.....................................................................................................................12
Internal Inter-connections .................................................................................................13
Installation Checklist .........................................................................................................14
3.7.1 Mechanical ................................................................................................................14
3.7.2 Electrical....................................................................................................................15
4System Design Guidelines.......................................................................................................16
Power Supply ...................................................................................................................16
Cable Selection ................................................................................................................16
DC Power .........................................................................................................................16
5Application Guidelines .............................................................................................................17
Positioning Requirements.................................................................................................17
Detection Coverage..........................................................................................................17
Exposure to Flare Radiation .............................................................................................17
Optical Contamination ......................................................................................................18
Enclosed Areas ................................................................................................................18
Detector Sensitivity...........................................................................................................18

4
Safety and Technical Manual
Rev: 2
Form No. F_020521
VSF303 Flame Detector
This document is strictly private and confidential, reproduction without Viking Corporation approval is prohibited. © 2021 The Viking Group Inc.
Detector Alarm Delay........................................................................................................18
6Maintenance and Commissioning ............................................................................................20
Procedure.........................................................................................................................20
Functional Testing ............................................................................................................22
7Fault Finding............................................................................................................................23
Removal of the Electronics ...............................................................................................23
Replacement of the Electronics ........................................................................................23
Diagnostics.......................................................................................................................23
LED Indication ..................................................................................................................24
Power Fault ......................................................................................................................25
8Technical Specification ............................................................................................................26
Detector Information .........................................................................................................26
Electrical Specification......................................................................................................26
Mechanical Specification ..................................................................................................26
Environmental Specification..............................................................................................26
Certification and Approvals ...............................................................................................27
Operating Specification.....................................................................................................27
VSF303 Detector Ordering Information.............................................................................28
Detector Accessories and Spares.....................................................................................28
9Appendix A - Acronyms, Terms & Abbreviations......................................................................29
10 Appendix B - Field of View ...................................................................................................30
11 Appendix C - FM Approval Performance Report...................................................................31
12 Appendix D - IEC 61508 Failure Rate Data ..........................................................................34

5
Safety and Technical Manual
Rev: 2
Form No. F_020521
VSF303 Flame Detector
This document is strictly private and confidential, reproduction without Viking Corporation approval is prohibited. © 2021 The Viking Group Inc.
1 Introduction
This safety and technical manual applies to the Viking Multi Spectrum IR3 Flame Detector (VSF303)
hardware version 1.0 and above.
The Viking VSF303 is a triple IR flame detector. It uses three IR sensors, digital signal processing
hardware and firmware algorithms to interpret the radiant characteristics of flame.
The Viking flame detection range are the safest and most advanced flame detectors on the market
today. Our worldwide installed base has proven that the Viking technology is robust, even in the
harshest of environments.
FM Approvals ensures that our flame detection firmware and hardware is fit for purpose through
rigorous research and testing to a range of fire types and various potential false alarm stimuli. This
testing proves that the VSF303 has an unsurpassed false alarm immunity.
The VSF303 has been designed for use in standalone operation.
Detector Features
•The VSF303 has a 90° cone of vision with a range of 200 ft (60 m) to a 1 ft2(0.1 m2) pan fire
of n-heptane.
•Three detection sensitivity settings allowing the user to select the sensitivity that is most
suitable for their application.
•Superior false alarm immunity to common sources of unwanted alarms such as hot process
and hot work.
•Advanced optical verification test assuring readiness to perform when needed.
•Outputs include both relay contacts and 0-20mA.
•Separate termination chamber for ease of installation.
•Certified Flame Simulator VSF3008 ITEST verifies operation from distances of 10 to 26 ft
(3 to 8 m).
•VSF303 can operate via a standard 3 or 4 wire termination.
•Microprocessor controlled heated optics increases resistance to moisture and ice.

6
Safety and Technical Manual
Rev: 2
Form No. F_020521
VSF303 Flame Detector
This document is strictly private and confidential, reproduction without Viking Corporation approval is prohibited. © 2021 The Viking Group Inc.
2 Safety Instructions
For the correct and effective use of this equipment, to maintain safety and avoid hazards it is
essential that you read and understand these instructions fully and act accordingly BEFORE
installing, operating, or maintaining the equipment.
PAY ATTENTION TO ALL SAFETY WARNINGS AND CAUTIONS
Warnings
This equipment is certified and intended for use in potentially hazardous areas. Install and use the
equipment in accordance with the latest regulations. The end user shall close any unused entries
using suitably certified blanking elements to maintain the housing’s type of protection.
For European (ATEX) installations IEC/EN60079-14 ‘Electrical Installations in Hazardous Areas’
and ICE/EN60079-17 ‘Inspection and Maintenance in Hazardous Areas’ should be strictly observed.
The IR3 type flame detector; Viking VSF303, is to be installed in places where there is a low risk of
mechanical damage.
For installations in North America the National Electrical Code (NEC) should be strictly observed. In
other countries the appropriate local or national regulations should be observed.
The equipment must be properly earthed to protect against electrical shock and minimize electrical
interference.
Do not drill holes in any housing or enclosure as this will invalidate the explosion protection. Ensure
that the enclosure lid is fully tightened and locked into position before energizing the equipment.
Do not open the enclosure in the presence of an explosive atmosphere.
All permits and proper site procedure and practices must be followed, and the equipment must be
isolated from the power supply before opening the enclosure in the field.
Operators must be properly trained and aware of what actions to take in the event of a fire being
detected.
Cable to be used for installation is to be selected with a temperature rating of greater than 77 °F
(25 °C) above the maximum ambient temperature. The metric cable entries are fitted with an
internal stop. This will result in threads of the cable gland being visible. Do not over tighten.
Cautions
Use only approved parts and accessories with this equipment.
Do not attempt to replace the window as the sapphire and the front cover are individually matched
pairs to meet the stringent requirement of the hazardous area certification.
The threaded portions of the detector are flame paths. These threads and the flame paths are not to
be repaired.
To maintain safety standards, commissioning and regular maintenance should be performed by a
qualified person.
Important Safety Notices
Pay attention to the guidelines given throughout this document. If in any doubt about the instructions
listed within this manual, then please contact Viking.

7
Safety and Technical Manual
Rev: 2
Form No. F_020521
VSF303 Flame Detector
This document is strictly private and confidential, reproduction without Viking Corporation approval is prohibited. © 2021 The Viking Group Inc.
Viking takes no responsibility for installation and/or use of its equipment if it is not in accordance
with the appropriate issue and/or amendment of the manual. Viking reserve the right to change or
revise the information contained herein without notice and without obligation to notify any person or
organization of such action.
Only those parameters and configurations highlighted with the FM diamond ( ) have been
tested and approved by Factory Mutual.
Warning
Do not open the detector assembly in a hazardous area. The detector contains limited serviceable
components and should only be opened by trained personnel.
Caution
The wiring procedures in this manual are intended to ensure functionality of the device under
normal conditions. Due to the many variations in wiring codes and regulations, total compliance to
these ordinances cannot be guaranteed. Be certain that all wiring complies with all local ordinances.
If in doubt, consult the authority having jurisdiction before wiring the system. Installation must be
done by trained personnel.
Caution
To prevent unwanted actuation or alarm, extinguishing devices must be inhibited/isolated prior to
performance testing or maintenance.
Detector Orientation
Detectors should be mounted with the earth stud directly below the lens.
Detector Positioning
Detectors should be positioned to provide the best unobstructed view of the area to be protected.
The following factors should also be taken into consideration:
Identify all high-risk fire ignition sources. Ensure that enough detectors are used to adequately
cover the hazardous area.
Locate and position the detector so that the fire hazard(s) are within both the field of view and
detection range of the device.
For best performance, the detector should be mounted on a rigid surface in a low vibration area.
Extremely dense fog or blizzard conditions could eventually block the vision of the detector.
For indoor applications, if dense smoke is expected to accumulate at the onset of a fire, mount the
detector on a side wall approximately 3 to 6 ft (1 to 2 m) below the ceiling.
The VSF303 has three sensitivity settings, which may be changed via a Viking application.
The flame detector carries out continuous internal hardware diagnostic testing to ensure correct
operation is relayed to the control system.
The VSF303 is not designed to annunciate diagnostic failure of signal returns via external wiring.
Control systems and fire panels generally have fault monitoring for such an eventuality.

8
Safety and Technical Manual
Rev: 2
Form No. F_020521
VSF303 Flame Detector
This document is strictly private and confidential, reproduction without Viking Corporation approval is prohibited. © 2021 The Viking Group Inc.
EN 54-part 10 Limitation of use
The VSF303 is not approved for use in oxygen-enriched atmospheres.
As the VSF303 responds to flame, it cannot be used in locations where flare stacks are within its
field of view or a reflected view is present without triggering alarms.
As the VSF303 responds to CO2emissions of a flame the VSF303 cannot detect non-hydrocarbon
fires, such as those using pure hydrogen, silane, and sulphur as fuel.
The sensitivity of the VSF303 is reduced by obscurants such as smoke, fog, and other airborne
particulates. The VSF303 may be blinded by extremely dense obscurants.
Arc welding should not take place within 32 ft (10 m) of the VSF303 when using the highest
sensitivity setting.
3 Installation
The VSF303 design has been developed to allow simple installation. The detector comprises two
key components, the detector enclosure, and the detector internal assembly. The detector assembly
located in the front of the enclosure should not be removed except by trained personnel.
Unauthorized removal or disassembly of the detector assembly will invalidate the warranty. Only the
rear end cap can be removed for terminal access.
Detector Enclosure
The detector electronics are housed in an enclosure certified for use in hazardous areas. For the
exact certification and conditions of use see certification label on the device, or the example drawing
below:
The detector comprises the front window cover including the window, the rear enclosure cover, the
enclosure body, certification rating label (see above) and the mounting bracket.
The flame detector is supplied preassembled and includes the mounting bracket. However, it is not
supplied with a mounting support and fixings, cabling, or glands.
Mounting & Orientation
The mounting bracket allows the detector’s vertical orientation to be adjusted from 0 to 45° and
allows a horizontal rotation of +/-45° when mounted from above.
Figure 1: Detector Mounting Bracket

9
Safety and Technical Manual
Rev: 2
Form No. F_020521
VSF303 Flame Detector
This document is strictly private and confidential, reproduction without Viking Corporation approval is prohibited. © 2021 The Viking Group Inc.
Figure 2: Ceiling Mount
Figure 3: Wall Mount
Firm, vibration free mountings are essential for trouble free operation of optical systems and the
detector should be fixed to a rigid mounting. When mounting on a wall in this orientation allow for
the cable gland and cable as this may restrict the downward rotation of the detector.

10
Safety and Technical Manual
Rev: 2
Form No. F_020521
VSF303 Flame Detector
This document is strictly private and confidential, reproduction without Viking Corporation approval is prohibited. © 2021 The Viking Group Inc.
Wiring Procedure
The wiring terminals are in the rear section of the detector enclosure and are accessible by removal
of the end cap.
The front section of the enclosure should only be accessed by trained personnel.
The terminal schematic detailed below shows the view looking inside the detector following removal
of the end cap.
Figure 4: Terminal Schematic
The detector has two types of alarm output available simultaneously.
• 0-20mA (source non-isolated)
• Relay (Alarm & Fault)
Listed below are wiring options dependent on the functional requirements of the detector.