Xtralis VESDA Sensepoint XCL User manual

VESDA Sensepoint XCL –
Large Bore Installation Manual
Sensepoint XCL - Large Bore
July 2020
Doc. No. 35563_02
Part No. 30937

VESDA VESDA Sensepoint XCL – Large Bore Installation Manual
35563_02 i
Intellectual Property and Copyright
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Disclaimer
The contents of this document is provided on an “as is” basis. No representation or warranty (either express or
implied) is made as to the completeness, accuracy or reliability of the contents of this document. The manufacturer
reserves the right to change designs or specifications without obligation and without further notice. Except as
otherwise provided, all warranties, express or implied, including without limitation any implied warranties of
merchantability and fitness for a particular purpose are expressly excluded.
General Warning
This product must only be installed, configured and used strictly in accordance with the General Terms and
Conditions, User Manual and product documents available from Xtralis. All proper health and safety precautions
must be taken during the installation, commissioning and maintenance of the product. The system should not be
connected to a power source until all the components have been installed. Proper safety precautions must be taken
during tests and maintenance of the products when these are still connected to the power source. Failure to do so
or tampering with the electronics inside the products can result in an electric shock causing injury or death and may
cause equipment damage. Xtralis is not responsible and cannot be held accountable for any liability that may arise
due to improper use of the equipment and/or failure to take proper precautions. Only persons trained through an
Xtralis accredited training course can install, test and maintain the system.
Liability
You agree to install, configure and use the products strictly in accordance with the User Manual and product
documents available from Xtralis.
Xtralis is not liable to you or any other person for incidental, indirect, or consequential loss, expense or damages of
any kind including without limitation, loss of business, loss of profits or loss of data arising out of your use of the
products. Without limiting this general disclaimer the following specific warnings and disclaimers also apply:
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You agree that you have been provided with a reasonable opportunity to appraise the products and have made
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that you have not relied on any oral or written information, representation or advice given by or on behalf of Xtralis
or its representatives.
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To the fullest extent permitted by law that any limitation or exclusion cannot apply, the total liability of Xtralis in
relation to the products is limited to:
i. in the case of services, the cost of having the services supplied again; or
ii. in the case of goods, the lowest cost of replacing the goods, acquiring equivalent goods or having the goods
repaired.
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You agree to fully indemnify and hold Xtralis harmless for any claim, cost, demand or damage (including legal costs
on a full indemnity basis) incurred or which may be incurred arising from your use of the products.
Miscellaneous
If any provision outlined above is found to be invalid or unenforceable by a court of law, such invalidity or
unenforceability will not affect the remainder which will continue in full force and effect. All rights not expressly
granted are reserved.

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The following typographic conventions are used in this document:
Convention Description
Bold Used to denote: emphasis Used for names of menus, menu options,
toolbar buttons
Italics Used to denote: references to other parts of this document or other
documents. Used for the result of an action.
The following icons are used in this document:
Convention Description
Caution: This icon is used to indicate that there is a danger to equipment.
The danger could be loss of data, physical damage, or permanent
corruption of configuration details.
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dangerous substances. This may lead to death or permanent injury.
Contact Us
UKand Europe [phone]
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www.xtralis.com
Product Listings
Electrical Safety
lUL 61010-1
lCSA C22.2 No. 61010-1
lIEC/EN 61010-1
Electromagnetic Compatibility
lEN 50270:2015
Radio
lRED
lFCC
lBT SIG
Enclosure Protection
lIP65
lType 4 in accordance with NEMA 250
Gas Performance
lUL 2075 (CO and CH4), AS 1668.2

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Scope
This manual describes the installation, operation and maintenance of the VESDA Sensepoint XCL – Large
Bore gas detector when connected to an Xtralis ASD pipe network.
The manual is intended for the operator involved in the installation, maintenance and servicing of the VESDA
Sensepoint XCL – Large Bore gas detector and must have a good understanding of the working principles of
the Xtralis aspirating smoke detectors (refer to respective ASD Product Guides for details).
Warning:
Positioning of sampling holes for gas detection is dictated by the characteristics of the gas being
detected, environmental and operational factors. Seek advice from experts where necessary.

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Table of Contents
1 Introduction 2
1.1 Features 2
1.2 Appearance 2
1.3 Accessories 2
1.4 Detectable Gases 3
1.5 Detector Versions 3
1.6 Relay Output 3
1.7 Specifications 4
2 Installation 7
2.1 Safety Information 7
2.2 Installation Layout 7
2.3 Power Cable Specification 8
2.4 Detector Module 8
2.5 Wiring of mA Output Versions 9
2.6 Wiring of Modbus Output Versions 11
2.7 Securing the Back Box to a Wall 13
2.8 Cable Connections 14
2.9 Ground Connections 15
2.10 Securing the Detector Module and Flow Cap 16
2.11 Connecting to Pipe Network 17
2.12 Installation Practices 18
2.13 Setting Alarm Thresholds 18
3 Commissioning 19
3.1 Commissioning the Detector 19
3.2 Status Indicator 21
3.3 Target Gas Selection (flammable catalytic versions only) 22
4 Maintenance 23
4.1 Using the Control Buttons 23
4.2 Maintenance Status Indicator 23
4.3 Calibration 24
4.4 Bump Test 26
4.5 Replacing the Sensor Cover 27
4.6 Replacing the Gas Sensor 28
4.7 Resetting Alarms and Faults 29
4.8 Troubleshooting 30
5 Sensepoint App 31
A Appendices 32
A.1 Detector Parameters 32
A.2 Troubleshooting 34
A.3 Ordering Information 35
A.4 Warranty 36
A.5 Safety Information for Wireless Devices 37
A.6 Modbus Registers 38

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1 Introduction
1.1 Features
VESDA Sensepoint XCL - Large Bore is a single-sensor aspirated gas detector that connects to the ASD pipe
network and supports the following interfaces dependent on the model:
Analog output: VESDA Sensepoint XCL features current loop output, supporting signals in the range 0 to 22
mA. Typically, this interface is referred to as 4 to 20 mA.
Digital output: VESDA Sensepoint XCL supports Modbus RTU digital communications.
Relay output: VESDA Sensepoint XCL provides two change-over relays for signaling to external control
systems or controlling external alarming devices, for example audible and visual alarm indicators.
Mobile app: A mobile app (Sensepoint App) is available to commission, maintain and service the VESDA
Sensepoint XCL gas detector.
VESDA Sensepoint XCL can be used either indoors or outdoors. If used outdoors, a sheltered location should
be chosen, which is protected from direct sunlight and rain.
1.2 Appearance
5
98
710
6
Legend
1Back box
2Gas detector module
3Sensor cover
4 Calibration Port
5Red plug
6Flow cap
7Cable entries
8Status indicator
9Gas sensor
10 Dust protection
membrane
1.3 Accessories
Part number Description
XCL-LB-CAP VESDA XCL Large Bore Spare Part Flow Cap
XCL-M20-CG VESDA XCL Spare Part Cable Glands PK 10
XCL-LB-ELB VESDA XCL Large Bore Spare Part 60DEG ELB PK 4
XCL-LB-FLT-1 VESDA XCL Large Bore FLT CAT NH3CO2PK 10
XCL-LB-FLT-2 VESDA XCL Large Bore FLT CO O2H2S NO2H2PK 10
XCL-LB-COV-1 VESDA XCL Large Bore SENS COV CAT NH3CO2
XCL-LB-COV-2 VESDA XCL Large Bore SENS COV CO O2H2S NO2H2

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1.4 Detectable Gases
VESDA Sensepoint XCL – Large Bore is available for the detection of the following gases:
lCarbon Monoxide (CO, ppm)
lFlammable (CAT) – Methane, Hydrogen, Propane, Ethanol, Butane, etc. (% LEL)
lCarbon Dioxide (CO2, ppm, % v/v)
lHydrogen (H2, ppm)
lHydrogen Sulphide (H2S, ppm)
lNitrogen Dioxide (NO2,ppm)
lAmmonia (NH3, ppm)
lOxygen (O2, % v/v)
1.5 Detector Versions
The 4-way terminal block(s) provide connection for both the gas detector output and the power supply.
Assignment of the terminals and additional terminal blocks will vary dependent on the version.
Analog (mA) Output Versions
Legend
1+24 V DC or 24 V AC
20V or 24V AC
34 to 20 mA
4Common
For details on wiring for the analog output version, see "Wiring of mA Output Versions" and "Current
Source/Sink Selection".
Modbus Output Versions
Legend
1+24 V DC or 24 V AC
20V or 24V AC
3A
4B
Use of the Sensepoint App is required to change the configuration settings of the Modbus RTU interface.
1.6 Relay Output
Legend
1Relay No. 1
2Relay No. 2
Where fitted, there are two configurable relays which can be used to control or signal to external devices, such
as audible and visual alarms and other control systems.

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Connection to these relays are made through the two 3-way terminal blocks.
Legend
1Normally closed (NC)
2Common
3Normally open (NO)
1.7 Specifications
Dimensions and Weight
Specification Value
Length 113 mm (4.4 in)
Width 113 mm (4.4 in)
Height 59 mm (2.3 in)
Weight 500 g (1.1 lb)

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Power Supply
VESDA Sensepoint XCL requires an isolated power supply unit that is certified by a national or international
standard, such as UL.
Specification Value
Nominal DC input voltage 24 V DC1
Nominal AC input voltage 24 V AC2, 50/60 Hz
Inrush current Less than 850 mA
Outputs
Specification Value
Analog output 0 to 22 mA sink or source (configurable)
Digital output Modbus RTU
Relay output 5 A, 250 V AC, 24 V DC
The two relays can be used for fault signaling (normally energized) or for alarm signaling. The relay
assignments and operations are configurable using the Sensepoint App.
lModbus RTU Default Communication Setting
Specification Value
Baud rate 9600 bps
Parity Even
Data bits 8
Stop bits 2
Flow control None
Refer to Appendix A.6 for details on the Modbus registers. Adjustable Modbus settings:
lSlave ID: 1 to 255
lBaud rate: 9600, 19200 bps
lParity: None, Even, Odd
lRelay Default Setting
Specification Value
Relay 1 Any faults and initial state is energized.
Relay 2 Gas alarm 1 and initial state is de-energized.
Maximum Power Consumption
The power consumption varies, depending on output version and sensor type. The additional maximum power
consumption for the relay output version is 0.6 W.
lAnalog Output Version
In normal state During an alarm
Electrochemical-cell-type sensor
(CO, H2, H2S, NO2, NH3, O2)
0.5 W 1.2 W
Catalytic-type sensors (CAT) 1.0 W 1.7 W
Infrared-type sensors (CO2) 1.0 W 1.7 W
lDigital Output Version
In normal state During an alarm
Electrochemical-cell-type sensor
(CO, H2, H2S, NO2, NH3, O2)
0.3 W 0.7 W
Catalytic-type sensors (CAT) 0.8 W 1.2 W
Infrared-type sensors (CO2) 0.8 W 1.2 W
1mA versions: 11 to 32 V DC, Modbus versions: 9 to 32 V DC
220 to 27 V A

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Operating Environment
Specification Value
Operating temperature −20 to 50 °C (−4 to 122 °F)
Storage temperature 0 to 30 °C (32 to 86 °F)
Humidity 0 to 99% (non-condensing)1
Atmospheric pressure 90 to 110 kPa
Installation category II (UL/CSA/IEC/EN 61010-1)
Pollution degree22 (UL/CSA/IEC/EN 61010-1)
Note: Install VESDA Sensepoint XCL in a sheltered location away from direct UV light and rain.
Recommended Wall-Mounting Screws
Specification Value
Type Countersunk, pan head
Size 4 mm (No. 8) diameter × 25 mm (1 in) min
Cable Gland
Specification Value
Inner knockout M20 or ½ NPT
Outer knockout M25 or ¾ NPT
Sampling Pipe
VESDA Sensepoint XCL – Large Bore is designed to be inserted to Xtralis pipe networks with the below
dimensions:
Specification Value
Outer diameter 25 mm (0.98 in) to 27mm (1.06 in)
Gas Test Tube
For Bump test and Calibration, use flexible urethane gas test tubing with the below dimensions to connect gas
cylinder to Calibration Port:
Specification Value
Inner diameter 4 mm ( 0.16 in)
Outer diameter 6 mm (0.24 in)
1Flammable catalytic vesions: 10 to 90% RH. Operating the detector outside this range may result in
increased drift and reduction in detector accuracy
2VESDA Sensepoint XCL conforms to IP65, Type 4 (in accordance with NEMA 250) making it suitable for
use in Pollution Degree 3 environments

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2 Installation
2.1 Safety Information
CAUTION:
Failure to observe the precautions described in this section can cause injury to persons or damage
to property.
Observe these precautions:
lTo minimize the risk of electrostatic charge, provision shall be made for adequate grounding and
equipment shall be installed in such a manner so that accidental discharge shall not occur.
lWhen VESDA Sensepoint XCL reaches the end of its life, it should be disposed of in accordance with
local regulations.
lDo not use cleaning solvents or abrasives to clean the gas detector.
lDo not attempt to modify the product in any way from the manufacturers design or specification.
Warranty will be void and malfunction of the gas detector may result.
lUse only genuine spare parts and accessories with VESDA Sensepoint XCL. Malfunction may result if
non-standard parts are used.
VESDA Sensepoint XCL is suitable for ordinary locations only and must not be installed in hazardous
locations. Installation must be in accordance with the recognized standards of the appropriate authority in the
country concerned. For Europe, see EN60079-14, EN60079-29-2, and EN61241-14. For installations in North
America, the National Electrical Code (NFPA 70) should be strictly observed. All the appropriate local and
national regulations should be observed.
2.2 Installation Layout
1. Gas detection system using Modbus RTU. Detectors are wired in a daisy chain on a single cable run.
2. Gas detector system using analog current loop principle. Each detector is individually wired to the
controller (i.e. Honeywell Analytics “Touchpoint™Plus” controller) on its own cable.
Note: Additional information on “Touchpoint™Plus” controller (Data Sheets, User Manuals,
Specifications & Quick Start Guide) can be downloaded from Honeywell Analytics website
www.honeywellanalytics.com.

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2.3 Power Cable Specification
VESDA Sensepoint XCL requires a power supply from the controller of specified supply voltage range in
section "1.7 Specifications". Ensure that a minimum supply voltage is measured at the VESDA Sensepoint
XCL, taking into account voltage drops due to cable resistance.
V+ detector
VESDA
Sensepoint
XCL V detector
V- detector
V+ controller
V controller
V- controller
Controller
Field Cable (L)
The maximum loop resistance (Rloop max) in the field cable is calculated as follows:
Rloop max = (Vcontroller − Vdetector min ) ÷ Idetector max
Idetector max = Wdetector max ÷ Vdetector min
Example:
The controller is supplying a nominal 24 V DC (Vcontroller), and the minimum allowable voltage of VESDA
Sensepoint XCL is 11 V DC (Vdetector min). Therefore, the maximum allowable voltage drop across the cable
between the controller and the detector is Vcontroller − Vdetector min = 13 V DC.
Power consumption of the detector is maximum 2.3 W (Wdetector max). The maximum current required to drive
the VESDA Sensepoint XCL at the minimum voltage is 2.3 W ÷ 11 V DC = 209.1 mA (Idetector max). So the
maximum field cable loop resistance (Rloop max) is 13 V DC ÷ 0.2091 = 62 Ω. Therefore, the maximum cable
length for any given cable type can be found by dividing the maximum allowable cable resistance per core by
the cable resistance provided by the cable manufacturer.
The following table shows the typical maximum cable distances for our example.
Cable size (cross
sectional areal)
Typical cable resistance Maximum cable length
(L)
0.5 mm2(20 AWG1) 36.8 Ω/km 842 m
1.0 mm2(17 AWG) 19.5 Ω/km 1589 m
1.5 mm2(16 AWG) 12.7 Ω/km 2440 m
2.0 mm2(14 AWG) 10.1 Ω/km 3069 m
2.5 mm2(13 AWG) 8.0 Ω/km 3875 m
2.4 Detector Module
Legend
1Inhibit switch
2Status indicator
3UP button
4DOWN button
5Current sink/source
selection switch
6Negative voltage output
7Positive voltage output
1Nearest equivalent.

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2.5 Wiring of mA Output Versions
CAUTION:
Ensure that the wiring of the detector is correct, and the Current Source/Sink selection switch is
correctly set BEFORE applying power. Failure to do so may result in damage to the VESDA
Sensepoint XCL detector.
Power Connection
When connecting to DC power, make sure that the polarity is correct.
If an external power source is used, ensure that terminal 4 “Common” is used to connect the power and
controller grounds together.
Inhibit Level Selection
Use the inhibit switch to set the level of current which is required when inhibit is active.
1. With this switch in the upper position, a current of 4 mA is output in inhibit mode.
2. With this switch in the lower position, a current of 2 mA is output in inhibit mode.
Current Source/Sink Selection
CAUTION:
Always disconnect power before changing the position of this switch. Failure to do so may result in
damage to the VESDA Sensepoint XCL detector.
Use the current source/sink switch to choose between source mode and sink mode.

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1. Detector sink mode: With this switch in the upper position, the analog output drives current through the
controller sensing circuit.
2. Detector source mode: With this switch in the lower position, the analog output draws current through
the controller sensing circuit.
mA Output Status Indicator
1 mA Fault
2/4 mA Inhibit
4-20 mA 0 to 100% Full Scale
>21 mA Over range
Notes: The load resistance of the controller must be between 33 Ω and 250 Ω. When the mA output is not
being used, a 33 Ω, 0.125 W load resistor should be connected between terminal 3 (4–20 mA) and
terminal 2 (0 V) for source mode or terminal 1 (+24 V DC) for sink mode. Failure to do so will cause
the unit to enter a fault condition.
When operating the detector from an AC power supply, the current loop (mA) wiring should be
connected between terminals 3 (4-20 mA) and 4 (COM).
Detector Source Mode with DC Power
1
2
3
1
2
3
4
VE
24 VDC
VIN
VIN+
VE+
4–20mA 4–20mA
RL
COM
Legend
1System controller
2VESDA Sensepoint XCL
detector
3Current flow
Detector Sink Mode with DC Power
1
2
3
1
2
3
4
VE VIN
VIN+
VE+
4–20mA 4–20mA
RL
COM
24 VDC
Legend
1System controller
2VESDA Sensepoint XCL
detector
3Current flow

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Detector Source Mode with AC Power
1
2
1
1
2
3
42
VE− VIN−
VIN+
VE+
4–20mA 4–20mA
RL
COM
COM
24 VAC
Legend
1External power supply
2VESDA Sensepoint XCL
detector
3System controller
4Current flow
Detector Sink Mode with AC Power
1
2
1
1
2
3
42
RL
24V
DC
VE
24 VAC
VIN
VIN+
VE+
4–20mA 4–20mA
COM
COM
Legend
1External power supply
2VESDA Sensepoint XCL
detector
3System controller
4Current flow
2.6 Wiring of Modbus Output Versions
Modbus Connection
For Modbus versions, up to 32 VESDA Sensepoint XCL detectors can be connected in a daisy chain
arrangement as shown in the diagram below.
Note: Where possible, spur or ‘T’ connections should be avoided. Always keep the spur connection as
short as possible.
Cable Specification for Modbus Connection
Type Cable Spec Max Length
Modbus 0.5 mm2to 2.5 mm2twist pair shied cable 1000 m

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Terminal Resistor
Connect a 120 Ω, 0.25 W terminal resistor between the A and B terminals at the end of the line.

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2.7 Securing the Back Box to a Wall
CAUTION:
Before starting installation, make sure that the system controller or external power source is switched
off.
1. There are four screw positions in the rear of the back box for mounting purposes. Punch the required
screw positions or drill using a 4 mm drill.
2. Secure the back box in its mounting position with suitable fixings appropriate to the mounting surface. Do
not over-tighten.
3. There are four cable entry knock-outs on three sides of and on the rear face of the back box. Drill or punch
the entries as required.

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2.8 Cable Connections
1. Fit suitable cable glands appropriate to the application and type of cable being utilized to the opened
cable entries.
2. Feed the cable through the cable gland.
3. Turn over the detector module and locate the terminal blocks on the back. Remove the terminal blocks by
pulling them toward the center of the module.
4. Connect the cable to the appropriate terminal block, referring to the relevant wiring diagram. Strip and
insert the end of each wire into the corresponding terminal hole. Using a flat-blade terminal screwdriver,
tighten the terminal screw until the wire is secured. Use a ferrule on the wire where necessary.
CAUTION:
Do not over-tighten the terminal screw.