Viking VSF301 User manual

2
Safety and Technical Manual
Rev: 2
Form No. F_020621
VSF301 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_020621 Rev 2
Ref: 2200.5009 Rev: 2.6 ECN:4610

3
Safety and Technical Manual
Rev: 2
Form No. F_020621
VSF301 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
Intelligent Visual Flame Detection.......................................................................................5
2Safety Instructions .....................................................................................................................6
Warnings ............................................................................................................................6
Cautions .............................................................................................................................6
Important Safety Notices ....................................................................................................6
EN 54-part 10 Limitation of use ..........................................................................................8
3Installation .................................................................................................................................9
Detector Enclosure .............................................................................................................9
Mounting & Orientation .......................................................................................................9
Wiring Procedure..............................................................................................................11
0-20mA Output .................................................................................................................12
Relay Mode ......................................................................................................................14
Installation Checklist .........................................................................................................16
3.6.1 Mechanical ................................................................................................................16
3.6.2 Electrical....................................................................................................................17
4System Design Guidelines.......................................................................................................18
Earthing & Screening Requirements.................................................................................18
Power Supply ...................................................................................................................18
RS485 Communications ...................................................................................................18
HART Protocol..................................................................................................................19
Cable Selection ................................................................................................................19
DC Power .........................................................................................................................19
Video ................................................................................................................................20
RS485 Communication.....................................................................................................20
5Application Guidelines .............................................................................................................21
Positioning Requirements .................................................................................................21

4
Safety and Technical Manual
Rev: 2
Form No. F_020621
VSF301 Flame Detector
This document is strictly private and confidential, reproduction without Viking Corporation approval is prohibited. © 2021 The Viking Group Inc.
Detection Coverage..........................................................................................................22
Exposure to Flare Radiation .............................................................................................22
Optical Contamination ......................................................................................................22
Enclosed Areas ................................................................................................................23
Detector Sensitivity...........................................................................................................23
6Maintenance and Commissioning ............................................................................................24
Procedure.........................................................................................................................24
Functional Testing ............................................................................................................26
7Fault Finding............................................................................................................................27
Removal of the Electronics ...............................................................................................27
Replacement of the Electronics ........................................................................................27
Diagnostics.......................................................................................................................27
LED Indication ..................................................................................................................28
Power Fault ......................................................................................................................29
Live Video Images ............................................................................................................29
8Technical Specification ............................................................................................................30
Detector Information .........................................................................................................30
Electrical Specification......................................................................................................30
Mechanical Specification ..................................................................................................31
Environmental Specification..............................................................................................31
Certification and Approvals ...............................................................................................32
Operating Specification.....................................................................................................32
VSF301 Detector Ordering Information.............................................................................33
Detector Accessories and Spares.....................................................................................33
9Appendix A - Acronyms, Terms & Abbreviations......................................................................34
10 Appendix B - Field of View ...................................................................................................35
11 Appendix C - IEC 61508 Failure Rate Data ..........................................................................37

5
Safety and Technical Manual
Rev: 2
Form No. F_020621
VSF301 Flame Detector
This document is strictly private and confidential, reproduction without Viking Corporation approval is prohibited. © 2021 The Viking Group Inc.
1 Introduction
The Viking VSF301 is a combined flame detection and video surveillance system utilizing unique
real time video-based flame detection technology developed by Viking. The intelligent visual flame
detection algorithms can discriminate between genuine fire conditions and common false alarm
stimuli.
Detector Features
Live Video
A live color video image is available from each detector; this allows information about the protected
area to be displayed on a monitor in the control room, providing the operator with a visual feedback
of an event, which can reduce response time.
Immunity and Discrimination
The detector is immune to common sources of unwanted alarms such as hot work (e.g., grinding
and welding), hot CO2emissions (such as turbine exhausts) and reflected flare radiation.
Robust and Reliable
The detector has been designed to tolerate extreme environmental conditions experienced offshore
or onshore.
Detection Coverage
The detector is sensitive to fires of n-heptane 1 ft2(0.1m2) at up to 144 ft (44m) within a 90°
horizontal field of view.
Sensitivity
The sensitivity of the detector is preset and no changes in sensitivity are required.
Certified SIL 2 Capability
The detector has been certified IEC 61508 SIL 2.
Intelligent Visual Flame Detection
The detector operates ‘standalone’ or can be integrated within a FM Approved control system.
Detectors are typically located throughout the installation to achieve specific detection coverage and
ensure that site performance requirements are met.
Each detector can provide live video images and fire alarm/fault signaling to the control equipment.
Each detector incorporates within a single unit an imaging device, digital signal processing
hardware, and firmware algorithms to process live video images and recognize flame features.

6
Safety and Technical Manual
Rev: 2
Form No. F_020621
VSF301 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.
For European (ATEX) installations IEC/EN60079-14 ‘Electrical Installations in Hazardous Areas’
and IEC/EN 60079-17 ‘Inspection and Maintenance in Hazardous Areas’ should be strictly
observed.
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 minimise 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 energising 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 lens 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_020621
VSF301 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.
Caution
SIL 2 capability is only confirmed for 0-20mA output configuration of the VSF301 visual flame
detector.
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.
(see section 5.2 of this document)
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.
(see section 5.1 of this document).
Extremely dense fog or blizzard conditions could eventually block the vision of the detector. (see
section 5.4 of this document).
For indoor applications, if dense smoke is expected to accumulate at the onset of a fire, mount the
detector on a side wall (approximately 1 meter, 3 feet) down from the ceiling.
The VSF3008 ITEST flame simulator can be used to verify correct detector positioning and
coverage (see section 6.2 of this document).

8
Safety and Technical Manual
Rev: 2
Form No. F_020621
VSF301 Flame Detector
This document is strictly private and confidential, reproduction without Viking Corporation approval is prohibited. © 2021 The Viking Group Inc.
The VSF301 has one sensitivity setting, this is factory set, and no changes can be made to set-up
except by fully trained Viking engineers.
The detector carries out continuous internal hardware diagnostic testing to ensure correct operation
is relayed to the control system. It can also be set to indicate dirty optics if this function is switched
on. The detector should be subjected to a background light level of at least 1 LUX in every 16-hour
period for 1 hour.
The diagnostic test interval – the maximum time taken to execute all diagnostics and act on a
detected hardware fault (via 0-20mA output) is 500ms.
The VSF301 is not designed to annunciate diagnostic failures of signal returns via external wiring.
Control systems and fire panels generally have fault monitoring for such an eventuality.
EN 54-part 10 Limitation of use
The VSF301 is not approved for use in Oxygen-enriched atmospheres.
As the VSF301 responds to visible flame the VSF301 cannot be used in locations where flare
stacks are within its field of view without triggering alarms.
The VSF301 is unable to detect fires that are invisible to the naked eye, such as those using pure
hydrogen, methanol, and sulphur as fuel.
The sensitivity of the VSF301 is reduced by obscurants such as smoke, fog, and other airborne
particulates. The VSF301 may be blinded by extremely dense obscurants.
Arc welding should not take place within 3 feet (1 m) of the VSF301.
The “optical fault” must be disabled for applications where there is no light present e.g., cellar or
chimney stack.

9
Safety and Technical Manual
Rev: 2
Form No. F_020621
VSF301 Flame Detector
This document is strictly private and confidential, reproduction without Viking Corporation approval is prohibited. © 2021 The Viking Group Inc.
3 Installation
The VSF301 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.
Unauthorised 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 and Orientation
Status LED must be below the lens.

10
Safety and Technical Manual
Rev: 2
Form No. F_020621
VSF301 Flame Detector
This document is strictly private and confidential, reproduction without Viking Corporation approval is prohibited. © 2021 The Viking Group Inc.
Figure 2: VSF301 Ceiling Mount
Figure 3: VSF301 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.