Sierra Monitor Corporation 3600I Instruction Manual

3600I

MODEL 3600I

TRIPLE IR (IR3) FLAME DETECTOR

APPLICABILITY & EFFECTIVITY

Effective for all Model 3600I Detectors manufactured after June 1, 2010.

Instruction Manual Part Number T15014

Rev. 3 August 2010

3600I

ABOUT THIS GUIDE

This guide describes the Model 3600I Triple IR (IR3) Flame Detector and its features
and provides instructions on how to install, operate and maintain the detector.

This guide includes the following chapters and appendixes:

• Chapter 1, Introduction, provides a general overview of the product, principles of

operation, and performance considerations.

• Chapter 2, Installing the Detector, describes how to install the detector including

preparations before installation, wiring and mode settings.

• Chapter 3, Operating the Detector, describes how to power-up and test the

detector. The chapter also lists safety precautions you should take when operating
the detector.

• Chapter 4, Maintenance and troubleshooting, describes basic maintenance

procedures, and troubleshooting and support procedures.

• Appendix A, Specifications: Lists the detectors technical and other specifications.

• Appendix B, Wiring Instructions, lists the wiring instructions for connecting the

detector and also provides examples of typical wiring configurations.

• Appendix C, RS-485 Communication Network, provides an overview of the RS-

485 communications network.

• Appendix D, Accessories, describes the accessories available for the detector.

• Appendix E, SIL-2 Features, describes the special conditions to comply with the

requirements of EN 61508 for SIL 2 according to TUV.

Page: ii

ABBREVIATIONS AND ACRONYMS

Abbreviation Meaning

ATEX Atmosphere Explosives
AWG American Wire Gauge
BIT Built In Test
EMC Electromagnetic Compatibility
EOL End of Line
FOV Field of View
HART Highway Addressable Remote Transducer-communication

protocol
IAD Immune at Any Distance
IECEx International Electrotechnical Commission Explosion
IPA Isopropyl Alcohol
IR Infrared
JP4 Jet Fuel
Latching Refers to relays remaining in the ON state even after the ON

condition has been removed
LED Light Emitting Diode
LPG Liquefied Petroleum Gas
mA MilliAmps (0.001 amps)
MODBUS Master-slave messaging structure
N.C. Normally Closed
N.O. Normally Open
N/A Not Applicable
NFPA National Fire Protection Association
NPT National Pipe Thread
SIL Safety Integrity Level
UNC Unified Coarse Thread
VAC Volts Alternating Current

3600I

Page: iii

3600I

TABLE OF CONTENTS

1 INTRODUCTION .......................................................................................................................... 1

1.1 OVERVIEW ......................................................................................................................... 1

1.2 MODEL AND TYPES .......................................................................................................... 2

1.3 FEATURES AND BENEFITS .............................................................................................. 4

1.4 PRINCIPLES OF OPERATION ........................................................................................... 4

1.4.1 HYDROCARBON FIRE DETECTION ............................................................................. 4

1.4.2 HEATED OPTICS ........................................................................................................... 5

1.4.3 HART PROTOCOL ......................................................................................................... 5

1.4.4 RS-485 MODBUS ........................................................................................................... 5

1.4.5 PRODUCT CERTIFICATION .......................................................................................... 6

1.5 PERFORMANCE CONSIDERATIONS ............................................................................... 6

1.5.1 DETECTION SENSITIVITY ............................................................................................. 6

1.5.2 CONE OF VISION ........................................................................................................... 8

1.5.3 FALSE ALARMS PREVENTION ................................................................................... 10

1.5.4 VISUAL INDICATORS .................................................................................................. 11

1.5.5 OUTPUT SIGNALS ....................................................................................................... 12

1.5.6 DETECTOR STATUS ................................................................................................... 13

1.5.7 AUXILIARY RELAY AS END-OF-LINE RESISTOR ..................................................... 14

1.6 INTERNAL DETECTOR TESTS ....................................................................................... 14

1.6.1 CONTINUOUS FEATURE TEST .................................................................................. 14

1.6.2 BUILT-IN-TEST (BIT) .................................................................................................... 15

2 INSTALLING THE DETECTOR ................................................................................................ 18

2.1 GENERAL GUIDELINES .................................................................................................. 18

2.2 UNPACKING THE PRODUCT .......................................................................................... 19

2.2.1 CHECKING THE PRODUCT TYPE .............................................................................. 19

2.3 REQUIRED TOOLS .......................................................................................................... 19

2.4 CERTIFICATION INSTRUCTIONS ................................................................................... 20

2.5 INSTALLATION CABLES .................................................................................................. 21

2.5.1 CONDUIT INSTALLATION ........................................................................................... 21

2.6 INSTALLING THE TILT MOUNT (PART NO. 3600I) ........................................................ 22

2.6.1 TILT MOUNT SPECIFICATIONS .................................................................................. 22

2.6.2 TILT MOUNT ASSEMBLY ............................................................................................ 23

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3600I

2.7 CONNECTING THE DETECTOR ..................................................................................... 24

2.7.1 VERIFYING THE DETECTOR WIRING ....................................................................... 25

2.8 CONFIGURING YOUR DETECTOR ................................................................................. 27

2.8.1 SENSITIVITY ................................................................................................................. 28

2.8.2 ALARM DELAY ............................................................................................................. 28

2.8.3 ADDRESS SET-UP ....................................................................................................... 28

2.8.4 FUNCTION SET-UP ...................................................................................................... 29

2.8.5 HEATED OPTICS ......................................................................................................... 29

3 OPERATING THE DETECTOR ................................................................................................. 30

3.1 POWERING UP................................................................................................................. 30

3.2 SAFETY PRECAUTIONS ................................................................................................. 31

3.2.1 DEFAULT FUNCTIONS SETTINGS ............................................................................. 31

3.3 TESTING PROCEDURES ................................................................................................ 32

3.3.1 AUTOMATIC BIT TEST ................................................................................................ 32

3.3.2 MANUAL BIT TEST ....................................................................................................... 32

3.3.3 TESTING WITH FIRE SIMULATOR MODEL 20/20-310 .............................................. 32

4 MAINTENANCE AND TROUBLESHOOTING .......................................................................... 34

4.1 MAINTENANCE ................................................................................................................ 34

4.1.1 GENERAL PROCEDURES ........................................................................................... 34

4.1.2 PERIODIC PROCEDURES ........................................................................................... 35

4.1.3 KEEPING MAINTENANCE RECORDS ........................................................................ 35

4.2

TROUBLESHOOTING .................................................................................................. 36

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3600I

APPENDICES ................................................................................................................................... 37

A SPECIFICATIONS ..................................................................................................................... 38

A.1 TECHNICAL SPECIFICATIONS ....................................................................................... 38

A.2 ELECTRICAL SPECIFICATIONS ..................................................................................... 39

A.3 OUTPUTS ......................................................................................................................... 39

A.4 MECHANICAL SPECIFICATIONS .................................................................................... 41

A.5 DIMENSIONS .................................................................................................................... 41

A.6 WEIGHT ............................................................................................................................ 41

A.7 ENVIRONMENTAL SPECIFICATIONS ............................................................................ 42

B WIRING INSTRUCTIONS .......................................................................................................... 43

B.1 GENERAL INSTRUCTIONS FOR ELECTRICAL WIRING ............................................... 43

B.2 TYPICAL WIRING CONFIGURATIONS ........................................................................... 44

C RS-485 COMMUNICATION NETWORK ................................................................................... 48

C.1 RS-485 OVERVIEW .......................................................................................................... 48

D ACCESSORIES ......................................................................................................................... 49

D.1 LONG RANGE IR3 FIRE SIMULATOR ............................................................................ 49

D.1.1 UNPACKING ................................................................................................................. 49

D.1.2 OPERATING INSTRUCTIONS ..................................................................................... 50

D.1.3 RANGE .......................................................................................................................... 51

D.1.4 CHARGING THE BATTERY ......................................................................................... 51

D.1.5 TECHNICAL SPECIFICATIONS ................................................................................... 52

D.2 TILT MOUNT - P/N 3600-001 ........................................................................................... 52

D.3 WEATHER PROTECTION - P/N 777163 ......................................................................... 53

D.4 LASER DETECTION COVERAGE POINTER - P/N 777166 ............................................ 54

D.5 AIR SHIELD - P/N 777161 ................................................................................................ 54

E SIL-2 FEATURES ...................................................................................................................... 55

E.1 3600I FLAME DETECTOR ................................................................................................ 55

E.1.1 SAFETY RELEVANT PARAMETERS .......................................................................... 55

E.1.2 GUIDELINES FOR CONFIGURING, INSTALLING, OPERATING AND

SERVICE ................................................................................................................................... 55

LIMITED WARRANTY ...................................................................................................................... 57

Page: vi

3600I

LIST OF FIGURES

Figure 1: Horizontal Field of View ....................................................................................................... 8

Figure 2: Vertical Field of View ........................................................................................................... 9

Figure 3: Indication LED: Indication LED .......................................................................................... 11

Figure 4: Detector with Tilt Mount ..................................................................................................... 22

Figure 5: Tilt Mount Assembly ........................................................................................................... 23

Figure 6: Tilt Mount Assembly (dimensions in mm and inches) ........................................................ 23

Figure 7: Detector with Cover Removed ........................................................................................... 25

Figure 8: Wiring Terminals ................................................................................................................ 44

Figure 9: Typical Wiring for 4 Wire Controllers (Using Option 1 or 2 Wiring) ................................... 45

Figure 10: 0-20mA Wiring Option 1 (Sink 4-Wire) - Default .............................................................. 46

Figure 11: 0-2mA Wiring Option 1 (Converted to Source 3-Wire) .................................................... 46

Figure 12: 0-20mA Wiring Option 1 (Unisolated Sink 3-Wire) .......................................................... 47

Figure 13: 0-20mA Wiring Option 2 and 3 (Source 3-Wire) .............................................................. 47

Figure 14: RS-485 Networking .......................................................................................................... 48

Figure 15: IR3 Long Range Fire Simulator 20/20-310 ...................................................................... 49

Figure 16: 3600I IR3 Detector Target Point ...................................................................................... 50

Figure 17: Tilt Mount ......................................................................................................................... 52

Figure 18: Weather Protection .......................................................................................................... 53

Figure 19: Laser Detection Coverage Pointer ................................................................................... 54

Figure 20: Air Shield .......................................................................................................................... 54

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3600I

LIST OF TABLES

Table 1: Wiring Options ....................................................................................................................... 3

Table 2: Sensitivity Range Levels ....................................................................................................... 7

Table 3: Fuel Sensitivity Ranges ......................................................................................................... 8

Table 4: Immunity to False Alarm Sources ....................................................................................... 10

Table 5: Welding Immunity Distance ................................................................................................. 11

Table 6: LED Indications ................................................................................................................... 11

Table 7: Available Output Types ....................................................................................................... 12

Table 8: Detector Status .................................................................................................................... 13

Table 9: Output Signals versus Detector State ................................................................................. 13

Table 10: Results of a Successful BIT .............................................................................................. 16

Table 11: Results of an Unsuccessful BIT ........................................................................................ 16

Table 12: Results of a Successful Manual BIT ................................................................................. 17

Table 13: Results of an Unsuccessful Manual BIT ........................................................................... 17

Table 14: Tools .................................................................................................................................. 19

Table 15: USA Version ...................................................................................................................... 22

Table 16: European Version ............................................................................................................. 22

Table 17: Model 3600I Wiring Options .............................................................................................. 26

Table 18: Sensitivity Settings ............................................................................................................ 28

Table 19: Functions ........................................................................................................................... 29

Table 20: Default Function Values .................................................................................................... 31

Table 21: Results of Successful Fire Simulator Test ........................................................................ 33

Table 22: Troubleshooting Table ...................................................................................................... 36

Table 23: Electrical Specifications .................................................................................................... 39

Table 24: Contact Ratings ................................................................................................................. 40

Table 25: 20 mA Current Output ....................................................................................................... 40

Table 26: Electromagnetic Compatibility (EMC) ............................................................................... 42

Table 27: Maximum DC resistance at 68°F (20ºC) for copper wire .................................................. 43

Table 28: Wiring length in feet (meter) .............................................................................................. 43

Table 29: Wiring Connections ........................................................................................................... 45

Table 30: Sensitivity Ranges ............................................................................................................. 51

Page: viii

➣ In this chapter…

Overview page 1
Model and Types page 2
Features and Benefits page 4
Principles of Operation page 4
Performance Considerations page 6
Internal Detector Tests page 14

1.1 OVERVIEW

The Model 3600I is a flame detector that utilizes improved IR3 technology to provide
state-of-the-art fire protection. The 3600I uses patented digital signal processing to
analyze the spectral and dynamic characteristics of the measured infrared radiation, to
identify fire events with exceptional sensitivity and extreme immunity to false alarms.

3600I

1 INTRODUCTION

All 3600 series detectors include a heated optical window for improved performance in
icing, snow and condensation conditions.

Detection performance can be easily adapted to all environments, applications and
requirements, by changing the detector’s configuration parameters. Adjusting these
parameters, as well and performing other maintenance and monitoring tasks, is
possible by means of RS485-based Modbus communication or HART communication
(in models with 0-20mA output).

The detector enclosure is ATEX certified EExd flameproof with an integral, segregated,
rear, EExe terminal compartment (avoiding exposure of the sensors and electronics to
surrounding environment). Hence the combined approval EExde IIB + H2 T5 (75°C) or
T4 (85°C).

The 3600 detectors are designed to operate as a stand-alone unit directly connected to
an alarm system or an automatic fire extinguishing system. The detector can also be a
part of a more complex system, where many detectors and other devices are integrated
through a common control unit.

Page: 1

1.2 MODEL AND TYPES

The 3600I is provided in various configurations depending on:

• Wiring options

• Temperature ranges

• Type of cable entries

• Housing type

• Required approval

The configuration detail is included in the product part number on the product label and
takes the form: 3600I XXXXX, where XXXXX defines the model according to the above
requirements.

To modify the default or pre-ordered configuration and perform maintenance tasks,
please refer to the HART Protocol TM777030, the RS-485 Manual TM 777050 or
TM777060.

The Part Numbers are defined as:

40/40I X XXXX

3600I

3600I

Table 1 describes the wiring options in detail.

Ex Approval

Housing

Electrical
Entries

Temperature

Wiring
Configuration

F – FM / CSA
C - ATEX / IECEx

S - Stainless Steel
A - Aluminum

1 - M25
2 - ¾" NPT

1 - 75°C
2 - 85°C

See Table 1

Page: 2

3600I

Table 1: Wiring Options

Wiring
Option

1 Power Manual BIT

2 Power Manual BIT

3 Power Manual BIT

4 Power Manual BIT

5 Power Manual BIT

Note: Wiring option 1 is default. The mA 'Sink' output can be altered to 'Source' type,
with a link between terminals 1 and 8. No other wiring options can be changed on site.

For example, product number 3600I-321SC has the following options:

• Wiring Option: 3 (Power, Manual BIT, RS-485, 0-20mA (Source) with HART

Protocol, Fault Relay (N.O.), Alarm Relay (N.O., N.C.))

• Temperature Range: 2 (85°C)

• Cable Entry: 1 (M25)

Connections Provided

Fault Relay

N.C.

Fault Relay

N.C.

Fault Relay

N.O.

Fault Relay

N.C.

Fault Relay

N.O.

Alarm Relay

N.O.

Alarm Relay

N.O., N.C.

Alarm Relay

N.O., N.C.

Alarm Relay

N.O.

Alarm Relay

N.O.

0-20mA Sink RS-485 -

0-20mA Source RS-485 HART

0-20mA Source RS-485 HART

Auxiliary N.O. RS-485 -

Auxiliary N.O. RS-485 -

• Housing : S (Stainless Steel)

• Approval: C (ATEX, IECEx)

Note: Check your specific part numbers against the information in Checking the Product
Type on page 19.

Page: 3

1.3 FEATURES AND BENEFITS

• Detection Range: Up to 215 ft. (65m) for a 1 ft2 (0.1m2) n-heptane fire.

• Ultra High Immunity to False Alarms: See Table 4 on page 10.

• Advanced Digital Processing of the Dynamic Characteristics of Fire: Flickering,

threshold correlation and ratio.

• Multi IR Channels: Between 3-5 microns

• Field Programmable Sensitivity: Four ranges to avoid zone crossover.

• Built In Test (BIT): Manual and Automatic (see Built-In-Test (BIT) on page 15).

• Heated Window: Prevents effects of icing, snow, condensation.

• Electrical Interface:

• Dry contact relays

• Communication network RS-485

• 0-20mA output

• HART Protocol: Communication protocol (see HART Protocol on page 5).

3600I

• EExde: Integral junction box for easy wiring.

• SIL-2: TÜV approved.

• Hazardous Area Certification: ATEX, IECEx, FM.

1.4 PRINCIPLES OF OPERATION

This section describes the 3600I principles of operation and includes:

• Hydrocarbon Fire Detection, page 4

• Heated Optics, page 5

• HART Protocol, page 5

• RS-485 Modbus, page 5

• Product Certification, page 6

1.4.1 HYDROCARBON FIRE DETECTION

The Model 3600I detector is designed to detect flames in which carbon dioxide (CO2) is
produced in the combustion process. These include all hydrocarbon flames, as well as
other types of flames and burning materials such as wood or alcohol.

The detector’s principle of operation is based on patented IR3 technology. This
technology identifies the unique spectral signature that hot CO
namely a peak of the intensity at wavelengths 4.2 to 4.7µ.

has in the infrared (IR),

2

Page: 4

The IR3 technique utilizes few infrared sensors, each sensitive to its own wavelength
range. The first sensor is sensitive to wavelengths within the emission peak of hot CO
The other two sensors are sensitive to wavelengths above and below this peak. The
fourth IR sensor is sensitive to a different band within the emission peak of hot CO
the event of fire, the signal measured in the first sensor is significantly higher than those
measured in the second two sensors. In order to issue a fire alarm, the detector
requires that this occurs, as well as other conditions (for example, radiation is flickering
in frequencies typical of flames). The signal of this sensor is compared to those of the
other three. This increases sensitivity for some types of flames. (For example, gas
flames).If exposed to non-fire radiation sources, the specific conditions required does
not occur, and the detector does not react.

1.4.2 HEATED OPTICS

The 3600 Flame Detectors use heated optics. The heater increases the temperature of
the optical surface by 5-8°F (~3-5°C) above the ambient temperature to improve
performance in icing, condensation and snow conditions.

The heated optics can be set to one of the following:

• Not operated

• On continuously

3600I

.

2

. In

2

• Automatic, per temperature change (default): you can define the start temperature
below which the window is heated. (The default is 41°F (5°C). This temperature can
be defined between 32°F (0°C) to 122°F (50°C). The heating stops when the
temperature is 27°F (15°C) above the start temperature.

For more information, see Configuring your Detector on page 27.

1.4.3 HART PROTOCOL

The 3600 Flame Detectors use the HART Protocol.

HART Communication is a bi-directional industrial field communication protocol used to
communicate between intelligent field instruments and host systems. HART is the
global standard for smart process instrumentation and the majority of smart field
devices installed in plants worldwide are HART-enabled. HART is available in wiring
options 2 and 3, see Table 1.

HART technology is easy to use and very reliable.

Through the HART connection, you are able to perform:

• Detector set-up

• Detector troubleshooting

• Detector health and status

For more details, refer to the HART Manual TM 777030.

1.4.4 RS-485 MODBUS

For more advanced communications, the 3600 detector has an RS 485 Modbus­compatible output that provides data communication from a network (up to 247
detectors) to a host computer or universal controller for central monitoring. This feature
allows for reduced installation costs, easy maintenance and local or remote diagnostic
tools.

Page: 5

1.4.5 PRODUCT CERTIFICATION

The 3600I Flame Detectors have the following certifications:

• ATEX, IECEX, page 6

• SIL-2 Approved, page 6

1.4.5.1 ATEX, IECEX

The 3600I Flame Detector is certified to:

• ATEX Ex II 2 GD per SIRA 07ATEX 1149 and IECEx SIR. 07.0085.

3600I

• EExde IIB + H

• T5 Ambient Temp. -55°C to +75°C.

• T4 Ambient Temp. -55°C to +85°C.

This product is suitable to use in hazardous zones 1 and 2 with IIB + H
vapors present.

.

2

1.4.5.2 SIL-2 APPROVED

The 3600I Flame Detector is certified to SIL-2 requirement per IEC 61508.4, Chapter

3.5.12.

The alert condition according to SIL-2 can be implemented by:

• Alert signal via 0-20mA current loop.

or

• Alert signal via alarm relay and fault relay.

• For more details and guidelines for configuring, installing, operating and service –

see SIL-2 Features on page 55 and TÜV Report No. 968/EZ348.00/009.

1.5 PERFORMANCE CONSIDERATIONS

This section describes performance aspects of the 3600I and includes:

gas group

2

• Detection Sensitivity, page 6

• Cone of Vision, page 8

• False Alarms Prevention, page 10

• Visual Indicators, page 11

• Output Signals, page 12

• Detector Status, page 13

• Auxiliary Relay as End-of-Line Resistor, page 14

1.5.1 DETECTION SENSITIVITY

Detection sensitivity is the maximum distance at which the detector reliably detects a
specific size of fire and typical type of fuel (standard fire).

Page: 6

1.5.1.1 STANDARD FIRE

Defined as a 1ft2 / 0.1m2 n-heptane pan fire, with maximum wind speed of 6.5 ft/sec (2
m/sec).

1.5.1.2 SENSITIVITY RANGES

The detector has four user-selectable sensitivity ranges. For each range there are two
response levels.

• WARNING (Pre-alarm)

• ALARM

The detection distance, for the WARNING level, is approximately 10% higher than the
ALARM distance.

Alarm response times for a standard fire at a specified range are shown Table 2.

Table 2: Sensitivity Range Levels

Level Response Time (sec) Sensitivity Range- ft (m)

1 3 50 (15)
2

Default

3 8 150 (45)
4 10 215 (65)

5 100 (30)

3600I

For some typical ambient conditions the Zeta parameter as defined in NFPA 72 for the
detector is 0.005 (1/meter).

Note: Zeta parameters may vary significantly with changes in temperature, air pressure,
humidity, visibility conditions, and so on.

1.5.1.3 OTHER FUELS

The detector reacts to other types of fire as follows:

• The baseline fire refers to n-heptane 1ft

• For fuel fire – standard pan fire size: 1ft

• For gas flame – 20 inch (0.5m) high, 8 inch (0.2m) width plume fire.

• Maximum Response Time: 10 sec.

2

(0.1m2) and is defined as 100% sensitivity.

2

(0.1m2).

Page: 7

Table 3: Fuel Sensitivity Ranges

3600I

Type Of Fuel

Gasoline

N-Heptane

JP4 70%
Kerosene 70%
Diesel Fuel 70%
Alcohol 95% 60%
IPA 60%
Methanol 55%
Methane 45%
LPG 45%
Paper 35%
Polypropylene 15%

1.5.2 CONE OF VISION

• Horizontal: 100°

Percent of Max. Distance at each Sensitivity

Range

100%

100%

Figure 1: Horizontal Field of View

Page: 8

3600I

• Vertical: +50° (down) , -45° (up)

Figure 2: Vertical Field of View

Page: 9

1.5.3 FALSE ALARMS PREVENTION

To prevent false alarms, the detector will not alarm or react to the radiation sources
specified in Table 4.

Table 4: Immunity to False Alarm Sources

3600I

Radiation Source

Indirect or reflected sunlight IAD
Vehicle headlights (low beam) conforming to MS53023-1 IAD
Incandescent frosted glass light, 300 W IAD
Fluorescent light with white enamel reflector, standard office or

shop, 70 W (or two 35 W)
Electric arc [12mm (15/32") gap at 4000 V alternating current, 60

Hz]
Arc welding [6 mm (5/16") rod; 210 A] See Table 5
Ambient light extremes (darkness to bright light with snow,

water, rain, desert glare and fog)
Bright colored clothing, including red and safety orange IAD
Electronic flash (180 watt-seconds minimum output) IAD
Movie light, 625 W quartz DWY lamp (Sylvania S.G.-55 or

equivalent)
Blue-green dome light conforming to M251073-1 IAD
Flashlight (MX 991/U) IAD
Radiation heater, 3000 W >3 (1)
Radiation heater, 1000 W with fan IAD
Quartz lamp (1000 W) >3 (1)
Mercury vapor lamp IAD
Grinding metal IAD
Lit cigar >1 (0.3)
Lit cigarette >1 (0.3)
Match, wood, stick including flare up >13 (4)

Immunity Distance
ft (m)

IAD

IAD

IAD

>6.5 (2)

Notes:

• IAD = Immune at Any Distance.

• All sources are chopped from 0 to 20 Hz.

Page: 10

Table 5: Welding Immunity Distance
Sensitivity Setting Detection Range Immunity Distance

1 50 ft (15m) >6 ft (2m)
2 100 ft (30m) >12 ft (4m)
3 150 ft (45m) >17 ft (6m)
4 215 ft (65m) >25 ft (7.5m)

1.5.4 VISUAL INDICATORS

One 3-color LED indicator is located inside the detector window, as shown in Figure 3.
The detector statuses are listed in Table 6.

Table 6: LED Indications
Detector Status LED color LED mode

Fault, BIT Fault Yellow 4 Hz - flashing
Normal Green 1 Hz - flashing
Warning Red 2 Hz - flashing
Alarm Red Steady

3600I

Figure 3: Indicator LED

Indicator LED

Page: 11

1.5.5 OUTPUT SIGNALS

Outputs are available according to the default configuration or the wiring options
selected for the 3600I IR3 Detector. Determine the outputs for your model according to
Table 7.

The detector incorporates several types of output suitable to different control systems:

• 0-20mA (stepped) with HART

• Relays (Alarm, Fault, Auxiliary)

• RS-485 Modbus

Table 7: Available Output Types

Output Type Version Detector Status

3600I

Alarm relay 3600I – Options 1XXXX, 4XXXX,

5XXXX

3600I – Options 2XXXX, 3XXXX The relay is N.O. and N.C.
Auxiliary relay 3600I – Options 4XXXX and 5XXXX The relay is N.O.
Fault relay 3600I – Options 1XXXX, 2XXXX,

4XXXX

3600I – Options 3XXXX, 5XXXX The relay is N.O. energized
0-20mA current

output

RS-485 All versions Modbus Protocol

3600I – Option 1XXXX SINK Option, (can be changed to

3600I – Options 2XXXX and 3XXXX SOURCE Option with HART

The relay is N.C.

The relay is N.C. energized

Source – see Figure 10, Figure
101 and Figure 102)

protocol

Page: 12

1.5.6 DETECTOR STATUS

The possible detector function statuses are listed in Table 8. A more detailed fault
analysis can be seen via HART or RS485.

Table 8: Detector Status
Status Description

Normal Normal operation.
BIT Built-In-Test being performed.
Warning Fire detected - changed to Warning (pre-alarm state).
Alarm Fire detected - changed to Fire Alarm state.
Latched Alarm
(Optional)
BIT Fault A fault is detected during BIT sequence or other electric failure.

Fault A fault is detected when the power supply is too low or due to a

In each state, the detector activates different outputs, as specified in
Table 9.

The alarm outputs remain latched on following detection of a fire
that has already been extinguished.

The detector will continue to detect for fire.

software fault or electrical failure. The detector will NOT detect fire
in this condition.

3600I

Table 9: Output Signals versus Detector State
Detector

State

LED
Indicator

LED
Mode

Alarm
Relay

Auxiliary
Relay

Fault
Relay

mA
output

Normal Green 1Hz Off Off On 4 mA
Warning Red 2Hz Off On

(1)

Alarm
Latch

BIT Fault
Warning at

Red Constant On On On 20 mA

(2)

Red Constant On Off On 20 mA

(3)

Yellow 4Hz Off Off Off 2 mA

Red 2Hz Off On

(4)

On 16 mA

(4)

On

On 20 mA

(4)

Off 16 mA

BIT Fault
Alarm at BIT

Red Constant On On Off 20 mA

Fault
Fault Yellow 4Hz Off Off Off 0 mA

Notes:

1 The alarm outputs are activated while alarm conditions exist and will stop

approximately 5 seconds after the fire is no longer detected.

2 The Alarm state can be optionally latched via programmed function. (Default is non-

latching).

3 The detector will remain in BIT Fault state until it has passed a successful BIT.
4 The Auxiliary Relay can be activated at the Warning level or Alarm level, depending

on programmed function.

5 The outputs depend on the wiring options.

Page: 13

1.5.6.1 OPTIONAL LATCHING

Alarms are set as non-latching by default. However, the detector includes a latched
alarm output capability, which operates according to the programmed function.

If selected, upon detection of a fire, the detection signal is latched until a manual reset
is performed (disconnecting the power supply or performing a manual BIT (see Manual
BIT on page 16).

Latching affects the Alarm Relay, 0-20mA output, the Alarm LED (the Auxiliary Relay
will be latched only when the programmable function Auxiliary Relay is set to YES.

Notes:

• The Auxiliary Relay is available only in Model 3600I – 4XXXX and 5XXXX

• The 0-20mA is available only in Model 3600I – 1XXXX, 2XXXX, 3XXXX

1.5.7 AUXILIARY RELAY AS END-OF-LINE RESISTOR

The Auxiliary Relay can be used as End-of-Line (EOL) resistance in Model 3600I­4XXXX, and 5XXXX only. In this case, the Auxiliary Relay is active as long as the
detector is not in Fault state.

1.6 INTERNAL DETECTOR TESTS

3600I

The detector performs two types of self tests:

• Continuous Feature Test, page 14

• Built-In-Test (BIT), page 15

1.6.1 CONTINUOUS FEATURE TEST

During normal operation, the detector tests itself continuously and indicates a fault if a
failure is found. This type of test complies with SIL-2 requirements.

The detector continuously tests:

• Input voltage level

• All internal regulator voltage level

• Voltage level status of sensor and sensor circuitry for noise or disconnection in the

electronic circuitry

• 0-20mA level output

• Relays and heater operation

• Processor Watch dog

• Software

• Memory

• Oscillator frequency

Page: 14

Response to Fault Indication

If a failure is found, the detector indicates by:

• Fault relay:

• Opens in wiring option 1, 2, and 4

• Closes in wiring option 3 and 5

• 0-20mA: indicates Fault (0mA or 2mA) in wiring option 1, 2, 3

• LED – Yellow flashes (4 Hz)

Correcting the Fault

The fault indications remain until the detector’s power is removed. The fault indications
return if the fault is still found when power is restored.

1.6.2 BUILT-IN-TEST (BIT)

The detector’s Built-In-Test (BIT) also checks the following:

• Electronics circuitry

• Sensors

• Window cleanliness

3600I

The detector can be set to perform the BIT in the following modes:

• Automatically and manually

• Manually only

Note: In Manual BIT, the outputs may also be tested and Control System ‘inhibit’ should
be applied if this could initiate other systems.

1.6.2.1 HOW THE BIT OPERATES

• The detector's status remains unchanged if the result of a BIT is the same as the
current status (NORMAL or BIT Fault)

• the detectors’ status is changed (from Normal to BIT Fault or vice versa) if the BIT
differs from the current status

Note: In ‘BIT Fault’ status the detector can continue to detect a fire.

Page: 15

1.6.2.2 AUTOMATIC BIT

The detector automatically performs a BIT every 15 minutes. A successful BIT
sequence does not activate any indicator.

The results of a successful and unsuccessful BIT are listed in Table 10 and Table 11.

Table 10: Results of a Successful BIT
Output Result

Fault relay • Model 1XXX, 2XXX, 4XXX Wiring options 1, 2, 4: remains

CLOSED

• Model 3XXX, 5XXX Wiring options 3 and 5: remains OPEN

0-20mA output Wiring option 1, 2, 3: Normal (4 mA)
Power LED Green, Flashing, 1 Hz On (Normal)

Table 11: Results of an Unsuccessful BIT
Output Result

Fault relay • Wiring option 1, 2, 4: changes to Open

• Wiring option 3 and 5: changes to Closed

0-20mA output Wiring option 1, 2, 3: BIT Fault (2mA)
Power LED Yellow, Flashing, 4 Hz
BIT procedure Performed every 1 minute

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1.6.2.3 MANUAL BIT

The BIT is manually initiated by momentarily connecting Terminal 3 with Terminal 2 (or
a switch across these terminals in the safe area).

If the BIT is unsuccessful, all outputs will function as described for Automatic BIT, but
the BIT is now automatically executed every 1 minute. This continues until a successful
BIT occurs, when the detector will resume normal operation.

The results of a successful and unsuccessful Manual BIT are listed in
Table 12 and Table 13.

Page: 16

3600I

Table 12: Results of a Successful Manual BIT
Output Result

FAULT relay • Wiring options 1, 2, and 4: remains CLOSED (Normal)

• Wiring options 3 and 5: remains OPEN (Normal)

ALARM relay Activated for 3 sec (only when the function Alarm BIT is set to YES)
AUXILIARY

relay
0-20mA output Wiring option 1, 2, 3:

POWER LED Green, Flashing, 1 Hz

Table 13: Results of an Unsuccessful Manual BIT
Output Result

FAULT relay • Wiring option 1, 2, 4: changes to OPEN

0-20mA output Wiring option 1, 2, 3: Indicates BIT FAULT (2mA)
POWER LED Yellow, Flashing, 4 Hz

For wiring options 4 and 5: is activated for 3 sec (only when the
function Auxiliary BIT is set to YES)

• Initiates 20 mA only when the function Alarm BIT is set to YES

• Initiates 16 mA when the function Auxiliary BIT is set to YES

and the function Alarm BIT is set to NO

• Wiring option 3 and 5:changes to CLOSED

1.6.2.4 MANUAL BIT ONLY SELECTED

The BIT is initiated manually by momentarily connecting Terminal Number 3 with
Terminal Number 2 or a switch across these terminals in the safe area.

Page: 17

3600I

2 INSTALLING THE DETECTOR

➣ In this chapter…

General Guidelines page 18
Unpacking the Product page 19
Required Tools page 19
Certification Instructions page 20
Installation Cables page 21
Installing the Tilt Mount (part no. 3600 page 22
Connecting the Detector page 24
Configuring your Detector page 27

This chapter provides basic guidelines for installing the detector. It does not attempt to
cover all of the standard practices and codes of installation. Rather, it emphasizes
specific points of consideration and provides some general rules for qualified personnel.
Wherever applicable, special safety precautions are stressed.

2.1 GENERAL GUIDELINES

To ensure optimal performance and an efficient installation, consider the following
guidelines:

• Sensitivity: To determine the level of sensitivity, consider the following:

• Size of fire at the required distance to be detected

• Type of flammable materials

• Wiring:

• The wire gauge must be designed according to the distance from the detector to

the controller and the number of detectors on the same power line. See Wiring
Instructions on page 43.

• To fully comply with EMC directive and protect against interference caused by

RFI and EMI, the cable to the detector must be shielded and the detector must
be grounded. The shield should be grounded at the detector end.

• Spacing and Location: The number of detectors and their locations in the
protected area are determined by:

• Size of the protected area

• Sensitivity of the detectors

• Obstructed lines of sight

• Cone of view of the detectors

• Environment:

• Dust, snow or rain can reduce the detectors sensitivity and require more

maintenance activities.

Page: 18

• The presence of high intensity flickering IR sources may affect sensitivity.

• Aiming the Detector:

• The detector should be aimed toward the center of the detection zone and have

a completely unobstructed view of the protected area.

• Whenever possible, the detector face should be tilted down at a 45º angle to

maximize coverage and prevent accumulation of dust and dirt.

• Do not start an installation unless all conceivable considerations regarding

detection location have been taken into account.

Installation should comply with NFPA 72E or any other local and International
regulations and standards, as applicable to flame detectors and installation of Ex
approved products.

2.2 UNPACKING THE PRODUCT

Upon receipt of your detector, check and record the following:

1 Verify the appropriate Purchase Order.

Record the Part Number (P/N) and Serial Number of the detectors, and the
installation date in an appropriate Log-book.

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2 Open the package before installation and visually inspect the detector.
3 Verify that all components required for the detector installation are readily available

before beginning the installation. If the installation is not completed in a single
session, secure and seal the detectors and conduits / cable entries.

2.2.1 CHECKING THE PRODUCT TYPE

Check that your product has the configuration / options that you ordered. Check the
detailed part number on the label and compare this information with the descriptions
contained in Model and Types on page 2.

2.3 REQUIRED TOOLS

The detector can be installed using general-purpose common tools and equipment.
Table 14 lists the specific tools required to install the detector.

Table 14: Tools
Tool Function

Hex Key 3/16 inch • Mount the detector on the tilt mount.

• Open and close detector cover (for wiring).

Flat Screw Driver 4 mm Connect ground terminal.
Flat Screw Driver 2.5 mm Connect wires to the terminal blocks.

For wiring, use color-coded conductors or suitable wire markings or labels. 12 to 20
AWG (0.5 mm² to 3.5 mm²) wires may be used for site wiring. The selection of wire
gauge should be based on the number of detectors used on the same line and the
distance from the control unit, in compliance with specifications (see General
Instructions for Electrical Wiring on page 43).

Page: 19

2.4 CERTIFICATION INSTRUCTIONS

Warning: Do not open the detector, even when isolated, when flammable

atmosphere present.

Use the following certification instructions:

• The cable entry point may exceed 167°F (75°C). Suitable precautions should be
taken when selecting the cable.

• The equipment may be used with flammable gases and vapors with apparatus
groups IIA and IIB + H2:

• T5 in the ambient temperature range: –67°F (–55°C) to +167°F (+75°C).

• T4 in the ambient temperature range: –67°F (–55°C) to +185°F (+85°C).

• Installation shall be carried out by suitably trained personnel in accordance with the

applicable code of practice such as. EN 60079-14:1997.

• Inspection and maintenance of this equipment shall be carried out by suitably
trained personnel in accordance with the applicable code of practice such as EN
60079-17.

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• Repair of this equipment shall be carried out by suitably trained personnel in
accordance with the applicable code of practice such as EN 60079-19.

• The certification of this equipment relies upon the following materials used in its
construction:

• Enclosure: 316L Stainless Steel or Aluminum

• Window: Sapphire Glass

• If the equipment is likely to come into contact with aggressive substances, then it is

the responsibility of the user to take suitable precautions that prevent it from being
adversely affected, thus ensuring that the type of protection provided by the
equipment is not compromised:

• Aggressive substances: acidic liquids or gases that may attack metals, or

solvents that may affect polymeric materials.

• Suitable precautions: regular checks as part of routine inspections or

establishing from the material’s data sheets that it is resistant to specific
chemicals.

Page: 20

2.5 INSTALLATION CABLES

Follow the following guideline for the cable installation:

• All cables to the detector must be well shielded in order to comply with EMC
requirement (see Technical Specifications on page 52).

• Ground the detector to the nearest ground point (not more than 3m from the
detector location).

• Install the detector with the cable entries placed downwards.

2.5.1 CONDUIT INSTALLATION

The conduit used for the cabling must comply with the following:

• To avoid water condensation water in the detector, install the detector with the
conduits placed downward, that include drain holes.

• When using the optional tilt mount, use flexible conduits for the last portion
connecting to the detector.

• For installations in atmospheres as defined in group B of the NFPA 72E, seal the
conduits inlets.

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• When pulling the cables through the conduits, ensure that they are not tangled or
stressed. Extend the cables about 30 cm. (12 in.) beyond the detector location to
accommodate wiring after installation.

• After the conductor cables have been pulled through the conduits, perform a
continuity test.

Page: 21

2.6 INSTALLING THE TILT MOUNT (PART NO. 3600-001)

The Tilt Mount enables the detector to be rotated up to 60º in all directions.

Figure 4 shows the Detector mounted on the Tilt Mount.

3600I

Figure 4: Detector with Tilt Mount

2.6.1 TILT MOUNT SPECIFICATIONS

Table 15: USA Version
Item Qty Type Location

Tilt Mount 1 3600-001
Screw 4 ¼" 20 UNC x ¾" Detector – Holding plate
Spring Washer 4 No. ¼" Detector - Holding plate

Table 16: European Version
Item Qty Type Location

Tilt Mount 1 3600-001
Screw 4 M6 x 1 x 20 mm Detector – Holding plate
Spring Washer 4 M6 Detector - Holding plate

Page: 22

2.6.2 TILT MOUNT ASSEMBLY

Figure 5 shows the Tilt Mount Assembly.

Figure 5: Tilt Mount Assembly

3600I

TiltHoldingPlate

TiltMount

Horizontal
LockingScrew

VerticalLocking
Screw

DetectorHolding
Plate

Figure 6 shows the Tilt Mount Assembly with dimension in both millimeters and inches.

Figure 6: Tilt Mount Assembly (dimensions in mm and inches)

Page: 23

➣ To install the Tilt Mount and Detector:

1 Place the tilt mount in its designated location and secure it with four (4) fasteners

through four (4) holes 7 mm in diameter. Use the 4 screws and spring washers
according to the kit (see Table 15 and Table 16).

Note: Removing the detector for maintenance purpose does not require the Tilt
Mount to be removed).

2 Unpack the detector.

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3 Place the detector with its conduit/cable entries pointing downwards on the holding

plate of the tilt mount. Secure the detector with
mount.

4 Release the Horizontal and Vertical Locking Screws using

the detector can be rotated. Point the detector towards the protected area and
make certain that the view of the area is unobstructed. Secure the detector in that
position by tightening the locking screws on the tilt mount. (Make sure the detector
is in the correct position.).
The detector is now correctly located, aligned and ready to be connected to the
system.

2.7 CONNECTING THE DETECTOR

This section describes how to connect the electric cabling to the detector (Figure 7).

➣ To connect the detector to the electrical cables

1 Disconnect the power.
2 Remove the back cover of the detector by removing four (4) socket head-screws in

the cover bolts. The terminal chamber is now revealed.

3 Remove the protective plug mounted on the Detector Conduit/Cable entry; pull the

wires through the Detector Inlet.

4 Use a ¾" – 14 NPT explosion-proof conduit connection or M25x1.5 flameproof

gland to assemble the cable / conduit to the detector.

5

/16" 18 UNC x 1" screw to the tilt

3

/16" Hex Key such that

Page: 24

3600I

Terminal
Chamber

Terminals

Internal Earth
Terminal

Earth
Terminal

Detector Holding
Screw

Conduit / Cable
Inlet

Figure 7: Detector with Cover Removed

5 Connect the wires to the required terminals on the Terminal Board according to the

wiring diagram (Figure 7) and Table 17.

6 Connect the grounding (earth) wire to the ground (earth) screw outside the detector

(Earth Terminal). The detector must be well grounded to earth ground.

7 Verify the wiring. Improper wiring may damage the detector.
8 Check the wires for secure mechanical connection and press them neatly against

the terminal to prevent them from interfering while closing the back cover (Figure 7).

9 Place and secure the detector’s back cover by screwing the four (4) socket-head-

screws in the Cover Bolts (Figure 4).

2.7.1 VERIFYING THE DETECTOR WIRING

The detector has five output wiring options within the EExde integral terminal section of
the enclosure. There are 12 terminals labeled 1-12.

For more information on the wiring options, see Wiring Instructions on page 43.

For mA wiring options see Figure 10, Figure 11, Figure 12, and Figure 13.

For relay connection options see Figure 9.

Table 17 describes the function of each terminal for all the wiring options.

Page: 25

Table 17: Model 3600I Wiring Options

3600I

Wire
Terminal No.

Option 1
Default

Option 2 Option 3 Option 4 Option 5

1 +24 VDC +24 VDC +24 VDC +24 VDC +24 VDC
2 0 VDC 0 VDC 0 VDC 0 VDC 0 VDC
3 Manual BIT Manual BIT Manual BIT Manual BIT Manual BIT
4

Fault Relay

5

N.C.

6 Alarm Relay

N.O.

Fault Relay

N.C.

Alarm Relay

N.O.

Fault Relay

N.O.

Alarm Relay

N.O.

Fault Relay

N.C.

Alarm Relay

N.O.

7 Alarm Relay C Alarm Relay C Alarm Relay C Alarm Relay C Alarm Relay

8 0-20mA

In

9 0-20mA Out 0-20mA

10 RS-485+

(1)

11 RS-485-

(1)

12 RS-485 GND RS-485

Alarm Relay

N.C.

Out*

RS-485+

(1)

RS-485-

(1)

GND

Alarm Relay

N.C.

0-20mA

Out*

RS-485+

(1)

RS-485-

(1)

RS-485

GND

Auxiliary

N.O.

Auxiliary C Auxiliary C

RS-485+

(1)

RS-485-

(1)

RS-485

GND

* Available with the HART protocol.

Fault Relay

N.O.

Alarm Relay

N.O.

C

Auxiliary

N.O.

RS-485+

(1)

RS-485-

(1)

RS-485

GND

Notes:

• RS-485 is used for communication network as specified in Appendix C (Terminals
10, 11, 12) and to connect (in safe area) to PC/Laptop for configuration/diagnostics.

• Alarm relay:

• N.O. energized contact in wiring options 1, 4, 5.

• N.O. and N.C. energized in options 2 and 3.

• 0-20mA is ‘Sink’ in option 1 and ‘Source’ in option 2 and 3.

• 0-20mA ‘Source’ in options 2 and 3 available with the HART protocol.

• In Wiring Option 1, link Terminals 1 and 8 to change the mA output to ‘Source’.

• The Fault output is N.C. energized SPST relay. The contacts are closed when the

Detector is in its normal operational condition in options 1, 2 and 4, and available as
N.O. energized in options 3 and 5.

• The Auxiliary output is N.O. energized (SPST) relay. The Auxiliary Relay may act in
parallel with the ALARM relay to activate another external device or it may provide a
warning signal, depending on the function configuration.

Page: 26

2.8 CONFIGURING YOUR DETECTOR

You can reprogram the function setup using the RS-485 connection or using the Hart
Protocol as follows:

• Sierra Monitor Host Software: The Sierra Monitor Host Software is for use on a
PC or laptop. Refer to Manual TM777050 for programming instructions. The Host
software enables you to change the functions.

• Handheld Unit: Refer to Manual 777060 for programming instructions when using
the Handheld Unit. The connection to the Handheld is fast and intrinsically safe. It
enables you to change the functions in situ with no need to remove the detector.

Note: Sierra Monitor can provide a suitable cable (P/N 794079-5) with integral
RS485/USB converter to connect between the Detector and a PC/laptop.

• Hart Protocol: Refer to Manual TM 777030 for programming instructions.

These functions enable you to set:

• Sensitivity

• Alarm Delay

• Time Delay for Anti Flare mode

• Address Setup

3600I

• Mode of Operation

• Heated Optics Operation

The factory Default settings listed for each function are:

• Sensitivity – 30

• Alarm Delay – A

• Alarm Latch – No

• Auxiliary Relay – No

• Automatic BIT – Yes

• Alarm BIT – No

• Auxiliary BIT – No

• EOL – No

• Heated Optics – Auto

• Temperature – 41°F (5°C)

Page: 27

2.8.1 SENSITIVITY

The detector offers four (4) sensitivity settings. The settings refer to an n-heptane or
gasoline fire of 1ft² (0.1m²), from low sensitivity of 50 ft (15m) to 215 ft (65m). For other
types of fuel sensitivity, refer to Table 3.

Table 18: Sensitivity Settings

Sensitivity Setting Detector Distance - feet Detector Distance - meters

15 50 15

30 (default) 100 30

45 150 45
60 215 65

2.8.2 ALARM DELAY

The detector is equipped with an Alarm Delay option, which provides programmable
time delays with settings at:

• Antiflare* (default)

*The Antiflare mode is selected to prevent false alarms in locations where fast flares
may be present. The Time Delay for fire alarms in this mode ranges from 2.5 to 15
seconds (usually, less than 10 seconds).

3600I

Other delays settings are available:

0, 3, 5, 10, 15, 20 or 30 seconds

When an Alarm (Detection) level condition occurs, the detector delays the execution of
the Alarm outputs by the specified period of time. The detector then evaluates the
condition for 3 seconds. If the Alarm level is still present, the Alarm outputs are
activated. If this condition no longer exists, the detector returns to its standby state.

The Alarm delay option affects the output relays and the 0-20mA. The LEDs and
outputs indicate warning levels during the delay time only if the fire condition exists.

2.8.3 ADDRESS SET-UP

The detector provides up to 247 addresses that can be changed with RS485
communication link or HART Protocol.

Page: 28

2.8.4 FUNCTION SET-UP

You can select the desired functions as detailed in the following table.

Table 19: Functions
Function Setting

Alarm Latch • Yes: Enable Alarm latching.

• No: Disable Alarm latching (default).

Auxiliary Relay** • Yes: Activate Auxiliary Relay at Warning level.

• No: Activate Auxiliary Relay at Alarm level (default).

Automatic BIT • Yes: Perform Automatic & Manual Bit (default).

• No: Perform Manual Bit only.

Alarm BIT • Yes: Successful Manual Bit activates the Alarm Relay

• No: Successful Manual Bit does not activate the Alarm

Auxiliary BIT** • Yes: Successful Manual Bit activates the Auxiliary Relay

• No: Successful Manual Bit does not activate the

EOL** • Yes: Auxiliary Relay is used as End of Line.

• No: Auxiliary Relay operates in accordance with

3600I

for approximately 3 seconds (default).

Relay.

for approximately 3 seconds (default).

Auxiliary Relay.

Function 2 and 5 (default).

Note: ** only available in Model 3600I-4XXXX and 5XXXX

2.8.5 HEATED OPTICS

The heated optics can be defined as one of the following modes:

• Heated Mode

• OFF: Not operated

• On: Continuously

• AUTO: Per temperature change

In AUTO mode, the default HEAT ON setting is 41°F (5°C). Heating stops when the
temperature is 27°F (15°C) above the start temperature.

You can define the start temperature below which the window will be heated. The
temperature can be defined between 32°F and 122°F (0°C to 50°C).

Page: 29

3 OPERATING THE DETECTOR

➣ In this chapter…

Powering Up page 30
Safety Precautions page 31
Testing Procedures page 32

This chapter describes how to power up and test the detector. It also includes some
very important safety checks that you should make before operating the detector.

3.1 POWERING UP

This section describes how to power up the detector. Follow these instructions carefully
to obtain optimal performance from the detector over its life cycle:

➣ To power up the detector:

1 Turn on the power.

3600I

2 Wait approximately 60 seconds for the detector to finish the start-up procedure.

Applying power initiates the following sequence of events:

• The yellow LED flashes at 4 Hz.

• BIT is executed.

If successful, the green LED flashes at 1 Hz and the FAULT relay contacts close,
mA output is 4 mA.

3 Enter to Normal mode.

Note: The majority of detectors are used in the default non-latching alarm mode. Only

perform a Reset when the Latching alarm option has been programmed.

➣ To reset a detector when in it is in a LATCHED ALARM state:

• Do one of the following:

• Disconnect power (Terminal Number 1 or Terminal Number 2).

or

• Initiate a Manual BIT.

Page: 30

3.2 SAFETY PRECAUTIONS

After powering-up, the detector requires almost no attention in order to function
properly, but the following should be noted:

• Follow the instructions in this guide and refer to the drawings and specifications.

• Do not expose the detector to radiation of any kind unless required for testing

purposes.

• Do not open the detector housing, while power is applied.

• Do not open the electronic compartment. This part should be kept closed at all

times and only opened in the factory. Opening the electronic component side
invalidates the warranty.

• You should only access the wiring compartment to wire or remove the detector or
access RS485 terminals for maintenance.

• Disconnect or disable external devices, such as automatic extinguishing systems
before carrying out any maintenance.

3.2.1 DEFAULT FUNCTIONS SETTINGS

Table 20 lists the default function configuration supplied with the detector.

3600I

Table 20: Default Function Values
Function Value Notes

Sensitivity 30
Alarm Delay A Anitflare
Alarm Latch No
Auxiliary Relay No In wiring options 1, 2, 3 the Auxiliary Relay is not

available. This function is not used.
Automatic BIT Yes
Alarm BIT No
Auxiliary BIT No In wiring options 1, 2, 3 the Auxiliary Relay is not

available. This function is not used.
EOL No In wiring options 1, 2, 3 the Auxiliary Relay is not

available. This function is not used.
Heat Mode Auto
Heat On 41°F (5°C) The detector starts heating the window for any

temperature below this value (in degrees

Celsius).

• In order to change the default function use:

• P.C with Sierra Monitor software, refer to Manual 777050 for instructions.

• Handheld unit, refer to Manual 777060 for instructions.

• USB cable with 485 converter (1 m) part number 794079-5.

• HART Protocol, refer to Manual 777030 for instructions.

Page: 31

3.3 TESTING PROCEDURES

This section describes the proof testing procedure for proper operation of the detector.
The detector can be tested using the Manual Built-in-Test or the Sierra Monitor IR3 Fire
Simulator - 20/20-310.

The detector performs internal test continuously and automatic BIT test every 15
minutes for more details refer to Built-In-Test (BIT) on page 15.

This section includes the following topics:

• Automatic BIT Test, page 32

• Manual BIT Test, page 32

• Testing with Fire Simulator Model 20/20-310, page 32

3.3.1 AUTOMATIC BIT TEST

Check that the indicators show normal conditions. See Powering Up on page 30.

3.3.2 MANUAL BIT TEST

Important: If the function setup Alarm BIT and/or Auxiliary BIT are set to Yes (default
No), the Alarm, Auxiliary Relay and 0-20mA outputs are activated during a Manual BIT.

Therefore, automatic extinguishing systems or any external devices that may be
activated during BIT must be disconnected.

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➣ To perform a Manual BIT:

1 Verify that the detector is Normal Mode.
2 Initiate Manual BIT. The results of successful and unsuccessful manual BITs are

detailed in Table 12 and Table 13.

3.3.3 TESTING WITH FIRE SIMULATOR MODEL 20/20-310

The Fire Simulator Model 20/20-310 can be used to simulate exposure of the detector
to a real fire condition. The detector is exposed to radiation at the required detection
level. As a result, the detector will generate a Fire Alarm signal. See Long Range IR3
Fire Simulator on page 49 for more information.

Important: If the detector is exposed to a fire simulator, the Alarm and Accessory
Relays and 0-20mA are activated during the simulation. Therefore, automatic
extinguishing systems or any external devices, which may be activated during
this process, must be disconnected.

➣ To perform Fire Simulator Test:

1 Power up the system and wait up to 60 seconds for the detector to turn to a normal

state. The Power LED turns on.

2 Aim the Sierra Monitor Fire Simulator Model 20/20-310 at the target point of the

detector (Figure 14), in a way that the radiation emitted by it is facing directly
towards the detector. (See Long Range IR3 Fire Simulator on page 49).

3 Press the operation button once. After few seconds, a successful test shows the

results shown in Table 21.

Page: 32

3600I

Table 21: Results of Successful Fire Simulator Test
Component Action Notes

0-20mA Turn to 20mA For a few seconds and then return to 4mA
Alarm Relay Activated for a few seconds and then returns to Normal
Auxiliary Relay Activated for a few seconds and then returns to Normal
Fault Relay Remains active

during the test

LED Red, steady

The detector is now ready for operation.

Page: 33

4 MAINTENANCE AND TROUBLESHOOTING

➣ In this chapter…

Maintenance page 34
Troubleshooting page 36

This chapter deals with preventive maintenance, describes possible faults in detector
operation and indicates corrective measures. Ignoring these instructions may cause
problems with the detector and may invalidate the warranty. Whenever a unit requires
service, please contact Sierra Monitor or its authorized distributor for assistance.

4.1 MAINTENANCE

This section describes the basic maintenance steps that should be taken to keep the
detector in good working condition and includes the following topics:

• General Procedures, page 34

• Periodic Procedures, page 35

3600I

• Keeping Maintenance Records, page 35

4.1.1 GENERAL PROCEDURES

Maintenance should be performed by suitably qualified personnel, who are familiar with
local codes and practice. Maintenance requires ordinary tools.

4.1.1.1 CLEANING

The detector must be kept as clean as possible. Clean the viewing window and the
reflector of the Flame Detector periodically.

The frequency of cleaning operations depends upon the local environmental conditions
and specific applications. The fire detection system designer will give his
recommendations.

➣ To clean the detector viewing window and reflector:

1 Disconnect power to the detector before proceeding with any maintenance including

window/lens cleaning.

2 Use water and detergent, and then rinse the viewing window with clean water.
3 Where dust, dirt or moisture accumulates on the window, first clean it with a soft

optical cloth and detergent, and then rinse with clean water.

Page: 34

4.1.2 PERIODIC PROCEDURES

In addition to preventive cleaning and maintenance, the detector should be functionally
tested every six months or as dictated by local codes and regulations. These tests
should also be carried out if the detector has been opened for any reason.

4.1.2.1 POWER-UP PROCEDURE

Perform Power-Up procedure every time power is restored to the system. Follow the
instructions described in Powering Up on page 30.

4.1.2.2 FUNCTIONAL TEST PROCEDURE

Perform a functional test of the detector as described in Internal Detector Tests on page

14.

4.1.3 KEEPING MAINTENANCE RECORDS

It is recommended that maintenance operations performed on a detector are recorded
in a Log-book. The record should include the following:

• Installation date, and contractor

• Serial and tag no.

3600I

• Entries for every maintenance operation performed, including the description of the
operation, date and personnel ID.

If a unit is sent to Sierra Monitor or a distributor for service, a copy of the maintenance
records should accompany it.

Page: 35

4.2 TROUBLESHOOTING

This section is intended to be a guide to correct problems which may happen during
normal operation.

Table 22: Troubleshooting Table
Problem Cause Corrective Action

3600I

LEDs Off
Fault Relay at N.O 0­20mA at 0mA

Yellow LED flashes
at 4 Hz
Fault Relay at N.O 0­20mA at 0mA

Yellow LED flashes
at 4 Hz
Fault Relay at N.O 0­20mA at 2mA

Red LED constantly
on

Alarm Relay at On 0­20mA at 20mA

No power at the unit • Check that the correct power is

sent to the detector.

• Check power polarity.

• Check wiring in the detector.

• Send the detector back for

repairs.

Fault Detector

• Low Voltage

• Faulty Detector

• Check the voltage at the

detector; verify at least 24V at
the detector terminal.

• Send the detector back for

repairs.

BIT Fault

• Faulty Detector

If no fire exists, then,

• Clean detector window.

• Re-power the detector.

• Replace the detector.

Perform Reset to the detector.

detector alarm
latched

Alarm condition • Check cause for alarm.

• If no alarm, re-power the

detector.

• Send the detector back for

repairs.

Page: 36

3600I

APPENDICES

Page: 37

A SPECIFICATIONS

➣ In this appendix…

Technical Specifications page 38
Electrical Specifications page 39
Outputs page 39
Mechanical Specifications page 41
Dimensions page 41
Weight page 41
Environmental Specifications page 42

A.1 TECHNICAL SPECIFICATIONS

3600I

Spectral Response

Detection Range

(at highest Sensitivity Setting for

2

(0.1m2) pan fire)

1ft

Response Time

Adjustable Time Delay

Sensitivity Ranges

Fields of View

Built-In-Test (BIT)

Three IR Bands

Fuel ft / m Fuel ft / m

n-Heptane 215 / 65 Kerosene 150 / 45

Gasoline 215 / 65 Ethanol 95% 135 / 40

Diesel Fuel 150 / 45 Methanol 115 / 35

JP5 150 / 45 IPA (Isopropyl

Alcohol)

Methane* 100 / 30 Polypropylene

Pellets

LPG* 100 / 30 Office Paper 33 / 10

* 20" (0.5m) high, 8" (0.2m) width plume fire

Typically 5 seconds

Up to 30 seconds

2

4 Sensitive ranges for 1 ft
50 ft (15m) to 215 ft (65m)

Horizontal 100°, Vertical 95°

Automatic (and Manual)

(0.1m2) n-heptane pan fire from

135 / 40

16 / 5

Page: 38

A.2 ELECTRICAL SPECIFICATIONS

Table 23: Electrical Specifications

3600I

Operating Voltage Status All

Outputs

Power Consumption
(Max. 24VDC)

Maximum Current
(Max. 24VDC)

Power Consumption
(Max. 18-32VDC)

Maximum Current
(18-32VDC)

Normal 1.61W 1.56W

Normal when Heater On 2.28W 2.16W

Alarm 2.64W 2.28W

Alarm when Heater On 3.24W 2.88W

Normal 70mA 65mA

Normal when Heater On 95mA 90mA

Alarm 110mA 95mA

Alarm when Heater On 135mA 120mA

Normal 1.95W 1.85W

Normal when Heater On 2.56W 2.45W

Alarm 3.04W 2.56W

Alarm when Heater On 3.68W 3.2W

Normal 90mA 85mA

Normal when Heater On 105mA 100mA

Alarm 130mA 115mA

Without 0­20mA

Electrical Input Protection

A.3 OUTPUTS

Electrical
Interface

Alarm when Heater On 160mA 145mA

The input circuit is protected against voltage­reversed polarity, voltage transients, surges and
spikes according to MIL-STD-1275B

There are five output-wiring options. These options must be
defined at the factory per the customer order and cannot be
changed at the customer facility.

See General Instructions for Electrical Wiring on page 43 for the
wiring/terminal diagram for each option.

Unless otherwise specified, the default is Option 1. The wiring
arrangement is identified on the detector by the part number (see
Model and Types on page 2).

• Option 1: Power, RS-485, 0-20mA (Sink), Fault I Relay (N.C),

Alarm Relay, (N.O) (see Figure 7).

• Option 2: Power, RS-485, 0-20mA (Source) and HART

protocol, Fault Relay (N.O), Alarm Relay, (N.O), (N.C).

• Option 3: Power, RS-485, 0-20mA (Source) and HART

Protocol, Fault Relay (N.O), Alarm Relay (N.O, N.C).

Page: 39

Electrical
Outputs

3600I

• Option 4: Power, RS-485, Fault Relay (N.C), Auxiliary Relay

(N.O), Alarm Relay, (N.O).

• Option 5: Power, RS-485, Fault Relay (N.O), Auxiliary Relay

(N.O), Alarm Relay, (N.O).

• Dry Contact Relays

Table 24: Contact Ratings

Relay Name Type Normal

Position

Maximum
Ratings

Alarm DPST N.O., N.C. 2A at 30 VDC or

0.5A at 250 VAC

Auxiliary SPST N.O. 5A at 30 VDC or

250 VAC

Fault * SPST N.C. or N.O 5A at 30 VDC or

250 VAC

Notes:

• The Fault relay (in wiring options 1, 2, 4) is normally

energized closed during normal operation of the detector.
The relay is de-energized open if a fault condition or low
voltage situation occurs.

• * In wiring options 3, 5 the relay is normally energized

open during normal operation of the detector. The relay is
de-energized close contact if a fault condition or low
voltage situation occurs.

• 0-20mA Current Output: The 0-20mA can be Sink or Source

according to the wiring option source (see General Instructions
for Electrical Wiring on page 43). The maximum permitted load
resistance is 600Ω.

Table 25: 20 mA Current Output

State Output

Fault 0 +1 mA
BIT Fault 2 mA±10%
Normal 4 mA±10%
Warning 16 mA±5%
Alarm 20 mA±5%

• HART Protocol

The HART is a digital communication signal at a low level on
top of the 0-20mA. This is a bi-directional field communication
protocol used to communicate between intelligent field
instruments and the host system. HART is available in wiring
options 2 and 3.

Through HART protocol the detector can:

• Display set-up

• Reconfigure the set-up

• Display detector status and definition

• Perform detector diagnostics

• Troubleshoot

For more details refer to HART Manual 777030.

Page: 40

3600I

• Communication Network: The detector is equipped with an

RS-485 communication link that can be used in installations
with computerized controllers.

The communications protocol is Modbus compatible.

• This protocol is a standard and widely used.

• It enables continuous communication between a standard

Modbus controller (Master device) and a serial Network of
up to 247 detectors.

Headed Optics

The front window can be heated to improve performance in icing,
condensation and snow conditions. The heater increases the
temperature of the optical surface by 5-8°F (3-5°C) above the
ambient temperature. The heated optics can be configured in three
ways:

• Off: The optics are not heated

• On: The optics are heated continuously

• Auto: Operated only when the change of temperature requires

the heating. (default)

In Auto mode the start heating temperature can be defined
between 32°F - 122°F (0°C - 50°C). The detector stops heating the
window when the temperature is 27°F (15°C) above the start
temperature.

A.4 MECHANICAL SPECIFICATIONS

Enclosure

Hazardous Area
Approvals

Water and Dust Tight

Electronic Modules
Electrical Connection

(two entries)

Stainless Steel 316
or
Aluminum, heavy duty copper free (less than-1%), red

epoxy enamel finish

• FM, CSA

Class I Div. 1 Groups B, C and D;
Class II/III Div. 1 Groups E, F and G.

• ATEX, IECEx ; EX II 2 GD, EExde IIB + H2 T5 (75°C),

T4 (85°C)

• NEMA 250 type 6p.

• IP 66 and IP 67 per EN 60529

Conformal coated

• x ¾" - 14NPT conduit

or

• 2 x M25 (ISO)

A.5 DIMENSIONS

4" x 4.6" x 6.18" (101.6 x 117 x 157 mm)

A.6 WEIGHT

Stainless Steel: 6.1 lb. (2.8 kg)
Aluminum: 2.8 lb. (1.3 kg)

Page: 41

A.7 ENVIRONMENTAL SPECIFICATIONS

The 3600I is designed to withstand harsh environmental conditions.

High Temperature

Low Temperature

Humidity

Salt Fog

Dust

Vibration

Mechanical Shock

Electromagnetic
Compatibility (EMC)

• Designed to meet MIL-STD-810C, method 501.1

procedure II

• Operating temperature: +167°F (+75 °C)

• Storage temperature: +185 °F (+85 °C)

• Designed to meet MIL-STD-810C, method 502.1,

procedure I

• Operating temperature: -57°F (-50°C)

• Storage temperature: -65°F (-55°C)

• Designed to meet MIL-STD-810C, method 507.1,

procedure IV

• Relative humidity of up to 95% for the operational

temperature range

• Designed to meet MIL-STD-810C, method 509.1,

procedure I

• Exposure to a 5% Salt Solution Fog for 48 hours

• Designed to meet MIL-STD-810C, method 510.1,

procedure I

• Exposure to a dust concentration of 0.3 frames/cubic

ft. at a velocity of 1750 fpm, for 12 hours

• Designed to meet MIL-STD-810C, method 514.2,

procedure VIII

• Vibration at an acceleration of 1.1g within the

frequency range of 5-30 Hz, and an acceleration of
3g within the frequency range of 30-500 Hz

• Designed to meet MIL-STD-810C, method 516.2,

procedure I

• Mechanical Shock of 30g half-sine wave, for 11 msec

See Table 26

3600I

Table 26: Electromagnetic Compatibility (EMC)
Test Standard Level Per

Electrostatic Discharge ESD IEC 61000-4-2 IEC 61326-3
Radiated EM Field IEC 61000-4-3 IEC 61326-3
Electrical Fast Transients IEC 61000-4-4 IEC 61326-3
Surge IEC 61000-4-5 IEC 61326-3
Conducted Disturbances IEC 61000-4-6 IEC 61326-3
Power Ferq. Magnetic Field IEC 61000-4-8 IEC 61326-3
Radiated Emission IEC 61000-6-3 EN 55022
Conducted Emission IEC 61000-6-3 EN 55022
Immunity to Main Supply Voltage Variations MIL-STD-1275B

To fully comply with EMC directive and protect against interference caused by RFI and
EMI, the cable to the detector must be shielded and the detector must be grounded.
The shield should be grounded at the detector end.

Page: 42

B WIRING INSTRUCTIONS

➣ In this appendix…

General Instructions for Electrical Wiring page 43
Typical Wiring Configurations page 44

B.1 GENERAL INSTRUCTIONS FOR ELECTRICAL WIRING

Follow the instructions detailed in this section for determining the correct wire gauge to
be used for the installation.

1 Use Table 27 to determine the required wire gauge /size for general wiring, such as

relay wiring. Calculate the permitted voltage drop with respect to load current, wire
gauge and length of wires.

Table 27: Maximum DC resistance at 68°F (20ºC) for copper wire

AWG # mm2 Ohm per 100 ft Ohm per 100 m

26 0.12 - 0.15 4.32 14.15
24 0.16 - 0.24 3.42 11.22
22 0.30 - 0.38 1.71 5.60
20 0.51 - 0.61 1.07 3.50
18 0.81 - 0.96 0.67 2.20
16 1.22 - 1.43 0.43 1.40
14 1.94 - 2.28 0.27 0.88
12 3.09 - 3.40 0.17 0.55
10 4.56 - 6.64 0.11 0.35

3600I

2 Use Table 28 to select wire gauge for power supply wires. DO NOT connect any

circuit or load to detectors’ supply inputs.

• Select Number of detectors connected in one circuit.

• Select wiring Length per your installation requirements.

• Refer to Power Supply Range for voltage extreme applied.

Table 28: Wiring length in feet (meter)

Number of

Detectors

24 18 16 14 - - 22-32
20 18 16 14 - - 22-32
16 20 18 16 14 - 22-32
12 20 18 16 14 - 20-32

8 20 18 16 14 - 20-32

4 and less 20 18 16 16 14 20-32

Ft (m) 164 (50) 328 (100) 492 (150) 656 (200) 820 (240)

Recommended Wire Diameter (AWG)

Max. Length from Power Supply to Last Detector

Power Supply

Range (VDC)

Page: 43

B.2 TYPICAL WIRING CONFIGURATIONS

This section describes examples of typical wiring configurations.

3600I

Figure 8: Wiring Terminals

Page: 44

3600I

Table 29: Wiring Connections
Wiring Option Detector

Model

1 3600I-1XXXX Fault Relay

2 3600I-2XXXX Fault Relay

3 3600I-3XXXX Fault Relay

4 3600I-4XXXX Fault Relay

5 3600I-5XXXX Fault Relay

Terminals

5 8 9

0-20mA (Sink) 0-20mA (Sink)

(N.C)

(N.C)

(N.O)

(N.C)

(N.O)

Alarm Relay

(N.C)

Alarm Relay

(N.C)

Auxiliary Relay

(N.O)

Auxiliary Relay

(N.O)

0-20mA Duct

0-20mA Duct

Auxiliary Relay

Auxiliary Relay

Source

Source

(C)

(C)

Figure 9: Typical Wiring for 4 Wire Controllers (Using Option 1 or 2 Wiring)

Page: 45

Figure 10: 0-20mA Wiring Option 1 (Sink 4-Wire) - Default

3600I

Figure 11: 0-2mA Wiring Option 1 (Converted to Source 3-Wire)

Page: 46

3600I

Figure 12: 0-20mA Wiring Option 1 (Unisolated Sink 3-Wire)

Figure 13: 0-20mA Wiring Option 2 and 3 (Source 3-Wire available with the HART
protocol)

Note: There are no 0-20mA outputs in wiring options 4 and 5.

Page: 47

C RS-485 COMMUNICATION NETWORK

➣ In this appendix…

RS-485 Overview page 48

C.1 RS-485 OVERVIEW

By using the RS-485 network capability of the IR3 detector and additional software, it is
possible to connect up to 32 detectors in an addressable system with four (4) wires only
(2 for power and 2 for communication). Using repeaters, the number of detectors can be
much larger (32 detectors for each repeater) up to 247 on the same four (4) wires.
When using the RS-485 network, it is possible to read each detector status (FAULT,
WARNING, and ALARM) and to initiate a BIT to each detector individually.

For more details, consult Sierra Monitor.

3600I

Figure 14: RS-485 Networking

Page: 48

D ACCESSORIES

➣ In this appendix…

Long Range IR3 Fire Simulator page 49
Tilt Mount - P/N 3600-001 page 52
Weather Protection - P/N 777163 page 53
Laser Detection Coverage Pointer - P/N 777166 page 54
Air Shield - P/N 777161 page 54

This appendix describes the accessories that can help you maximize fire detection with
the IR3 flame detector:

D.1 LONG RANGE IR3 FIRE SIMULATOR

The IR3 Long Range Fire Simulator 20/20-310 is designed specifically for use with IR3
flame detectors. The Fire Simulator emits IR radiation in a unique sequential pattern
corresponding to and recognizable by the IR3 detector as fire. This allows the IR3
detectors to be tested under simulated fire conditions without the associated risks of an
open flame.

3600I

There is an optional beam collimator, model no. 20/20-190, specially designed for
extended test range.

Figure 15: IR3 Long Range Fire Simulator 20/20-310

D.1.1 UNPACKING

Verify that you have received the following contents:

• Delivery form

Page: 49

• Fire Simulator with integral batteries

• Battery charger

• Optional Beam Collimator

• Storage case

D.1.2 OPERATING INSTRUCTIONS

Warning: Do not open the Fire Simulator to charge the batteries or for any other reason

in a hazardous area.
Caution: The following test simulates a real fire condition and may activate the

extinguishing system or other alarms. If this is not desired, disconnect/inhibit them
before the test and reconnect after the simulation.

➣ To simulate a fire:

1 Aim the Fire Simulator towards the detector’s Target Point.

3600I

Target Point

Figure 16: 3600I IR3 Detector Target Point

2 When testing keep a distance of at least 50 cm (20 inches) from the detector.
3 Press the operation button once. Fire simulation lasts for 20 seconds. The detector

sends an alarm signal (solid red LED).

4 Wait 20 seconds before repeating the test.
5 Verify that the optical window is clean.

Page: 50

D.1.3 RANGE

Table 30: Sensitivity Ranges

3600I

Sensitivity Detection Range

(ft / m)

1 (Low) 50 / 15 3.8 / 1.2 7 / 2.2
2 100 / 30 7 /2.2 14.5 / 4.5
3 150 / 45 10 / 3.2 22 / 7
4 (High) 215 / 65 14.5 / 4.5 29 / 9

Notes:

• The minimum distance from the detector is 20 inches (50 cm).

• The optional beam collimator is fitted for Extended Range.

At extreme temperatures, there is a 15% maximum reduction in the range.

Important: Keep the Fire Simulator in a safe place when not in use.

D.1.4 CHARGING THE BATTERY

The Fire Simulator uses NiCd batteries as a rechargeable power source. When the
batteries are fully charged, the simulator operates for at least 60 times without
recharging. An internal buzzer is sounded when the voltage from the batteries is lower
than the required operational level.

➣ To charge the battery:

Standard Test
Range (ft / m)

Extended Test
Range (ft / m)

1 Place the Fire Simulator on a table in a safe area.
2 Turn the sealed plug (next to the operation button) counter-clockwise with a suitable

wrench.

3 Connect the battery charger.
4 Charge for a maximum of 14 hours.
5 Disconnect the charger.
6 Tighten the sealed plug clockwise.

Page: 51

D.1.5 TECHNICAL SPECIFICATIONS

3600I

Mechanical

Electrical

Environment

Physical

• Explosion Proof Enclosure:

• NFPA (designed to meet)

• Class I, Division 1 & 2 Groups B, C and D

• Class II, Division 1 & 2 Groups E, F and G

• ATEX EX II2G NEMKO 02ATEX255

• EExd IIB T5 50°C per En 50-014 & EN50-018

• Power: 8 VDC Max.

• 6 x Rechargeable 1.2 VDC NiCd Batteries

• Current: 2.5A Avg.

• Charge: 400 mA for 14 Hours

• Temperature Range:-4 to +122ºF (-20 to +50ºC)

• Vibration Protection: 1g (10-50hz)

• Water and Dust: IP 67 per EN 60529

• Dimensions: 11.5 x 10.1 x 3.9 in

(292 x 258 x 100 mm)

• Weight; 7.5 lb. (3.4 Kg)

D.2 TILT MOUNT - P/N 3600-001

The Tilt mount provides accurate directional selection for optimum area coverage.

Figure 17: Tilt Mount

Page: 52

D.3 WEATHER PROTECTION - P/N 777163

The weather protector protects the detector from different weather conditions, such as
snow and rain.

3600I

Figure 18: Weather Protection

Page: 53

D.4 LASER DETECTION COVERAGE POINTER - P/N 777166

The Laser Detection Coverage Pointer evaluates detector coverage on-site. The device
is an add-on accessory that enables designers and installers to optimize detector
location and assess the actual coverage of installed detectors.

The device is universal and can be used with all 3600 Optical Flame Detectors.

3600I

Figure 19: Laser Detection Coverage Pointer

D.5 AIR SHIELD - P/N 777161

The Air Shield enables you to install the detector in dirty areas and using compressed
air, keep the window clean. This prevents the accumulation of dirt on the window and
enables the detector to continue to operate under harsh conditions.

Figure 20: Air Shield

Page: 54

E SIL-2 FEATURES

➣ In this appendix…

3600I Flame Detector page 55

E.1 3600I FLAME DETECTOR

This appendix details the special conditions to comply with the requirements of EN
61508 for SIL 2.

The 3600I Flame Detector can only be used in low or high demand mode applications,
see IEC 61508.4, Chapter 3.5.12.

E.1.1 SAFETY RELEVANT PARAMETERS

Perform the following functional checks of the detector:

• Alternative 1: Functional check of the detector every 180 days:

• HFT: 0

3600I

• PFD: 3.0 x 10 -4 (≈ 3% of SIL-2) if only Alarm Relay is used for alerting.

• PFD: 3.2 x 10 -4 (≈ 3.2% of SIL-2) if 0-20mA – interface is used as alarm.

• PFH: 1.5 x 10 –7 1/h (≈ 14.9% of SIL-2) for 0-20mA application.

• SFF: 95% fulfills the conditions of EN 61508 for SIL2

• Alternative 2: Functional check of the detector every 365 days:

• HFT: 0

• PFD: 4.5 x 10 -4 (≈ 4.5% of SIL-2) if only Alarm Relay is used for alerting.

• PFD: 4.9 x 10 -4 (≈ 4.9% of SIL-2) if 0-20mA – interface is used signal current

as alarm.

• PFH: 1.5 x 10 –7 1/h (≈ 14.9% of SIL-2) for 0-20mA application.

• SFF: 95% fulfills the conditions of EN 61508 for SIL2

E.1.2 GUIDELINES FOR CONFIGURING, INSTALLING, OPERATING AND

SERVICE

The alert conditions according to SIL 2 can be implemented by an:

• Alert signal via 20mA current loop
or

• Alert signal via alarm relay and the fault relay

E.1.2.1 CONDITIONS FOR SAFE OPERATING

1 The flame detector shall consist only of the approved hardware and software

modules.

2 The 24V power supply must fulfill the requirements for PELV / SELV of EN 60950.
3 The automatic BIT (Built-In-Test) must be activated.

Page: 55

4 The set-up parameters must be verified (as described in

Using the 0-20mA Interface for Alerting on page 55, point 1 and in Using the Alarm
Relay Contact for Alerting on page 56, point 1) and the function of the 3600 Flame

Detector (flame detection, function of the
0-20mA interface, relay functions) must be checked completely.

E.1.2.2 USING THE 0-20MA INTERFACE FOR ALERTING

1 The following parameters shall be set:

• AUTOMATIC BIT test = on

• Connected to 0-20mA Terminals

2 The following allowed output current must be supervised with an accuracy of ± 5%:

• Normal State = 4mA

• Warning State = 16mA

• Alarm State = 20mA

3 The output current must be supervised regarding the over-and under run of the 0-

20mA.

4 The 0-20mA can be used as low and high demand mode.

3600I

E.1.2.3 USING THE ALARM RELAY CONTACT FOR ALERTING

1 The following parameters shall be set:

• AUTOMATIC BIT Test = on

• Connected to N.C contact of Alarm Relay Terminals

• Connected to Fault Relay Terminals

2 The relay contacts (“alarm” – and “faulty relay”) must be protected with a fuse rated

at 0.6 of the nominal specified relay contact current.

3 The maximum contact rating that is allowed per SIL-2 is 30VDC.
4 It is to be considered that the contact of the Alarm Relay opens if there is a fire

alarm.

5 During the forwarding and evaluation of the alarm it must be noted that the relay

contact opens.

6 The alarm relay can be used as low demand only.

E.1.2.4 OTHER

1 The complete function of the flame detector (flame detection, function of the 0-

20mA interface, the relays) must be examined at least every six or twelve months
(see Safety Relevant Parameters on page 55, when the flame detector must be
switched OFF and ON.

2 The window of the sensor must be examined at appropriate time intervals for partial

contamination.

3 The HART and the RS 485 interfaces must not be used for the transmission of the

safety-related data.

Page: 56

LIMITED WARRANTY

SIERRA MONITOR CORPORATION warrants its products to be free from defects in
workmanship or material under normal use and service for two years after date of shipment.
SMC will repair or replace without charge any equipment found to be defective during the
warranty period. Final determination of the nature and responsibility for defective or damaged
equipment will be made by SMC personnel.

All warranties hereunder are contingent upon proper use in the application for which the product
was intended and do not cover products which have been modified or repaired without SMC
approval or which have been subjected to accident, improper maintenance, installation or appli­cation, or on which original identification marks have been removed or altered. This Limited
Warranty also will not apply to interconnecting cables or wires, consumables (i.e. calibration
gases, batteries, sensors), nor to any damage resulting from battery leakage.

In all cases SMC’s responsibility and liability under this warranty shall be limited to the cost of
the equipment. The purchaser must obtain shipping instructions for the prepaid return of any
item under this warranty provision and compliance with such instruction shall be a condition of
this warranty.

Except for the express warranty stated above, SMC disclaims all warranties with regard to the
products sold hereunder including all implied warranties of merchantability and fitness and the
express warranties stated herein are in lieu of all obligations or liabilities on the part of SMC for
damages including, but not limited to, consequential damages arising out of/or in connection with
the use or performance of the product.

3600I

Page: 57