AGS PARKSAFE GAS DETECTOR Owner's manual

Installation, Operation & Maintenance Parksafe Gas Detector
Rev: 910-20 1
PARKSAFE GAS DETECTOR
Nitrogen Dioxide or Carbon Monoxide

Installation, Operation & Maintenance
Please read this manual carefully and retain for future use.
The Parksafe gas detection range is designed for installation into car parking facilities and enclosed
garages –paired with the Parksafe control panel which will monitor up to 16 gas detectors per panel.
The information contained within this manual should be referenced for typical installation and operation
only. For specific requirements that may deviate from the information in this guide –contact your supplier.

Installation, Operation & Maintenance Parksafe Gas Detector
Rev: 910-20 2
CONTENT
IMPORTANT SAFETY INSTRUCTIONS..........................................................3
INSTALLATION ..............................................................................................4
Planning..................................................................................................................................... 4
Typical Location and Positioning ........................................................................................... 4
Typical Installation Arrangement............................................................................................ 4
Mounting.................................................................................................................................... 5
Board Overview........................................................................................................................ 5
Wiring your Detector................................................................................................................ 6
Detector Chain ID Switches.................................................................................................... 6
Creating a Detector Chain ...................................................................................................... 7
120 ohm Termination Resistance .......................................................................................... 7
Quick Circuit Test..................................................................................................................... 7
Quick Tips ................................................................................................................................. 8
Specification ............................................................................................................................. 9
OPERATION .................................................................................................10
First Power Up ........................................................................................................................ 10
LED Indicators ........................................................................................................................ 10
Gas Alarm Levels ................................................................................................................... 10
End of Life (EOL)....................................................................................................................11
MAINTENANCE & TESTING.........................................................................12
Cleaning .................................................................................................................................. 12
Service Indication...................................................................................................................12
Manual Operation Test .......................................................................................................... 12
Gas Testing Overview ...........................................................................................................13
Gas Testing Kits...................................................................................................................... 13
Gas Sensor Types & Reaction Times.................................................................................. 13
Parksafe Gas Testing Procedure ......................................................................................... 14
Test Gas Storage & Handling ............................................................................................... 14
Engineers Notes (Blank)........................................................................................................15
Installation Details .................................................................................................................. 16

Installation, Operation & Maintenance Parksafe Gas Detector
Rev: 910-20 3
IMPORTANT SAFETY INSTRUCTIONS
Before any installation, use or maintenance read this manual carefully.
The information contained within this manual should be referenced for typical installation and operation only.
For site specific requirements that may deviate from the information in this guide –contact your supplier.
If this device is used in a manner not specified by the manufacturer, the safety and provided by this device may be impaired.
This device is designed for indoor operation only.
The expected lifetime of a NO2 gas sensor element is 2 years upon initial power up. The Parksafe control panel will display a message
to indicate this time and detectors should immediately be replaced.
The expected lifetime of a CO gas sensor element is 5 years upon initial power up. The Parksafe control panel will display a message
to indicate this time and detectors should immediately be replaced.
It is recommended that this device be commissioned upon installation and serviced annually.
Do not apply lighter gas or other aerosols to the device –this will cause extreme damage.
High concentrations of alcohol / ethanol found in many products may damage, deteriorate or affect the gas sensing elements –Avoid
exposure near your device.
This equipment is designed to detect carbon monoxide and nitrogen dioxide from any source of combustion.
It is NOT designed to detect smoke, fire or other gases and should NOT be used as such.
DO NOT remove the gas sensing module when the system is powered up.
This device provides early warning of the presence of nitrogen dioxide or carbon monoxide, usually before a healthy adult would
experience symptoms. This early warning is possible provided your alarm is located, installed and maintained as described in this
guide.
This device requires a continual supply of electrical power –it will not work without power.
This device should not be used to substitute proper installation, use and / or maintenance of fuel burning appliances including
appropriate ventilation and exhaust systems.
This device does not prevent nitrogen dioxide or carbon monoxide from occurring or accumulating.
Actuation of your alarm indicates the presence of dangerous levels of NO2or CO.
Seek fresh air supply and contact your local gas emergency service should you suspect a gas leak.
This device may not fully safeguard individuals with specific medical conditions.
If in doubt, consult a doctor / physician.
Your product should reach you in perfect condition, if you suspect it is damaged, contact your supplier.
Manufacturer’s Warranty
Warranty Coverage: The manufacturer warrants to the original consumer purchaser, that this product will be free of defects in
material and workmanship for a period of two (2) years from date of purchase.
The manufacturer’s liability hereunder is limited to replacement of the product with repaired product at the discretion of the
manufacture. This warranty is void if the product has been damaged by accident, unreasonable use, neglect, tampering or other
causes not arising from defects in material or workmanship.
This warranty extends to the original consumer purchaser of the product only.
Disclaimers: Any implied warranties arising out of this sale, including but not limited to the implied warranties of description,
merchantability and intended operational purpose, are limited in duration to the above warranty period. In no event shall the
manufacturer be liable for loss of use of this product or for any indirect, special, incidental or consequential damages, or costs, or
expenses incurred by the consumer or any other user of this product, whether due to a breach of contract, negligence, strict liability
in tort or otherwise. The manufacturer shall have no liability for any personal injury, property damage or any special, incidental,
contingent or consequential damage of any kind resulting from gas leakage, fire or explosion. This warranty does not affect your
statutory rights.
Performance: During the above warranty period, your product will be replaced with a comparable product if the defective product is
returned together with proof of purchase date. The replacement product will be in warranty for the remainder of the original warranty
period or for six months –whichever is the greatest.
Information on waste disposal for consumers of electrical & electronic equipment.
When this product has reached the end of its life it must be treated as Waste Electrical & Electronics Equipment (WEEE). Any WEEE
marked products must not be mixed with general household waste, but kept separate for the treatment, recovery and recycling of the
materials used. Please contact your supplier or local authority for details of recycling schemes in your area.

Installation, Operation & Maintenance Parksafe Gas Detector
Rev: 910-20 4
INSTALLATION
Planning
Our detectors should be installed in areas at risk of gas accumulation.
Take in to account the design of the air flow patterns within the parking zone area. Detectors should be
installed in the correct orientation, as recommended by the manufacturer, and ease of access should be
accounted for to allow for any bump tests and other forms of maintenance and identification.
Typical Location and Positioning
Consider the coverage required and function of the area. Emphasis should be placed on airflow patterns
and correct placement, not perceived detecting ranges. The target gas will only be identified when
contact is made with the sensing element itself.
Locations for Parksafe gas detectors will vary based on the intended application and target gas, they
should be located near where hazardous gas could quickly accumulate and areas of identified
consequential risk. The composition of the target gas and its density relative to air are used as the basis
for the recommended height of gas detectors. These heights may vary based on air flow and temperature
conditions in addition to the proposed application and location.
Carbon Monoxide (CO) gas Breathing Zone - 1700mm (5ft 6”) from ground level.
Nitrogen Dioxide (NO2)gas Low Level - 300mm (1ft) from ground level.
Avoid conditions of any other environmental factors that could potentially impede the accuracy and
operation of the detectors such as; condensation; vibration; temperature, pressure, the presence of other
gases, electromagnetic interference and draft areas.
Typical Installation Arrangement
The gas detectors are designed around a centralised Parksafe control panel of which the location also
needs to be considered. The panel should be located away from the hazardous area that it is monitoring.
Accessibility is required both for status observation and alarm purposes.
Where connections may exceed 500 yards from one control panel –Contact your supplier!
The use of sound strobes are highly recommended!

Installation, Operation & Maintenance Parksafe Gas Detector
Rev: 910-20 5
Mounting
Unpack all the parts!
Designed for surface mounting, it must be installed by a licensed, insured contractor.
1. Carefully remove the front cover of the unit by removing the four screws with a screwdriver.
2. Remove the foam, this is used for transit purposes only.
3. Using the rear cover - mark the screw holes to the wall. If mounting direct to wall - ensure the wall
surface is flat to prevent base distortion.
4. There is a 0.79” diameter hole for cable entry.
5. Position as per the recommended heights and in accordance with applicable regulations.
6. After executing the mounting, connections and ID switches –secure the front cover.
Board Overview
Wiring of different circuits shall be separated by means of routing, clamping or barrier!
All Class 2 wiring is to be installed within flexible tubing to maintain segregation between circuits!
A shielded cable is used for all wiring!
Any damage attempting to remove the circuit board parts may void any warranty!
Do not remove the Gas Sensor Module when the detector is powered!

Installation, Operation & Maintenance Parksafe Gas Detector
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Wiring your Detector
Power and Modbus data are wired between detectors with the first
connected to a control panel DETECTOR CHAIN terminal.
For MODBUS communications, a shielded cable is used.
The shielding can be of 2 types: braided [mesh of thin conducting
wires] or foil (consisting of a thin sheet of metal covering the
twisted wires).
One example of such cable is BELDEN 3082A.
If you are encountering noise or irregular problems with a Modbus link, the problem is likely related to
grounding, incorrect shielding or wiring mains power next to Modbus wiring.
To ground the data cable, the shield should be connected to [-] of the chain terminals.
Reversing the [D+] and [D-] connections of any device can lead to the whole system to stop working
owing to reverse polarity found on the terminals.
Not appropriately grounding the device can give false readings, fail completely or turn into a safety
hazard!
Detector Chain ID Switches
When wiring multiple detectors in a chain it is important to identify each and every
detector installed for the control panel to receive and display accurate Modbus
data corresponding with the correct detector type.
The ID configuration diagram is printed onto detector boards for quick
reference. All detectors are factory set to ID1.
ID Switches must be configured for each and every detector connected to a
system to receive and display accurate data!
We recommend a plan, map and/or marking the detector enclosures detailing ID and location!

Installation, Operation & Maintenance Parksafe Gas Detector
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Creating a Detector Chain
Up to 16 Parksafe detectors can be connected, chained in a parallel ‘daisy chain’ method up to approx.
500 yards from the panel depending on chain configuration, wire type for power and condition. Any other
way may cause issues or damage to the overall system.
It is recommended that the cable of same color should be used to connect all [D+] terminals together and
similarly cable of same color to be used to connect all [D-] terminals together.
**Split chain example. **Single chain example
**Where connections may exceed 500 yards from one control panel –Contact your supplier!
120ohm Termination Resistance
Signal communication issues may occur where the bus length is too long, high
baud rates are used or signal reflections are occurring.
To avoid this, terminating at each end of a chain may help the quality of the data
signal by turning on the 120ohm terminal resistor switch.
Split chain Single chain
Quick Circuit Test
When the test button on the detector board is pressed and held –the detector will simulate an open
circuit to ensure all configured systems, outputs, alarms, indications and other external devices operate as
intended in response to gas. When the test button is released –the test sequence will terminate and
return to normal operation.
It is recommended testing your detectors with a certified calibrated gas!
For more information refer to section: Maintenance & Testing.

Installation, Operation & Maintenance Parksafe Gas Detector
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Quick Tips
CONNECTION:
The best way to connect devices in a MODBUS RTU is a ‘DAISY CHAIN’method.
MAXIMUM DISTANCE:
You may encounter problems when powering gas sensors beyond 500 yards from one control panel, in
this instance, contact your supplier.
TERMINAL RESISTANCE:
Signal communication issues may occur. To avoid this, terminating at each end of a chain may help the
quality of the data signal by turning on the 120ohm terminal resistor switches.
GROUNDING:
If you are encountering noise or irregular or abnormal problems with a Modbus link, the problem is likely
related to grounding, incorrect shielding or wiring main power next to Modbus wiring.
CABLES TO USE:
A shielded and twisted pair cable is used. The shielding can be of 2 types: braided [like a mesh of thin
conducting wires] or like a foil [consisting of a thin sheet of metal covering the twisted wires].
PROTECTION:
High concentrations of alcohol found in many products may damage, deteriorate or affect the gas sensing
elements of Detectors –such as; wine; deodorants; stain removers; thinners etc.
IDENTIFICATION:
Remember to individually ID each connected detector by configuring the ID switches on the circuit board.
Make a plan, map and/or note of the location of all connected detectors for tracing and locality purposes.
Wiring of different circuits shall be separated by means of routing, clamping or barrier!
All Class 2 wiring is to be installed within flexible tubing to maintain segregation between circuits!
Any damage attempting to remove the circuit board parts may void any warranty!
Do not remove the Gas Sensor Module when the detector is powered!
A shielded cable is used for all wiring!

Installation, Operation & Maintenance Parksafe Gas Detector
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Specification
Product:
Parksafe Gas Detector
Model:
CO / NO2
Compatibility:
Parksafe Control Panel
Visual Indicators:
Power LED / Fault LED / Alarm LED
Modbus:
RTU
Detector chain length:
±500 Yards Approx.
Initial Stabilisation Time:
60 Seconds approx.
Power Input Voltage:
12-24Vdc
Consumption:
15mA Max (24V)
Accuracy @ 25°C / 77°F:
± 5%
Operating Temp:
14 –122°F 30-85%RH Non-Condensing
Test Conditions:
77° ± 10°F
Audible Alarm Buzzer (dB):
NA
Wire Ratings:
Min. 18AWG / 75°C min
MODBUS wire ratings:
Shield/Screen type. Min. 18AWG. Copper
Gas Sensor Type:
CO: Electro-Chemical
NO2: Electro-Chemical
Measuring Range:
CO: 10-10000 ppm
NO2: 0-20 ppm
Pre- Alarm:
CO: 25 –100 ppm
NO2: 0.7 –2 ppm
Alarm:
CO: >100 ppm
NO2: > 2 ppm
Expected Sensor Life:
(from power up)
CO: 5 Years
NO2: 2 years
Dimensions (H x W x D):
4.92 x 3.15 x 1.38”

Installation, Operation & Maintenance Parksafe Gas Detector
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OPERATION
First Power Up
1. 2. 3. 4.
1. On connecting power, your gas detector Power LED will illuminate.
2. The gas detector then enters a stabilisation phase for approximately 60 seconds –during this time the
Fault LED will flash indicating that the device is not yet ready for operation.
3. The gas detector will then establish a Modbus data signal with the main control panel –during this
time the Fault LED will remain on.
4. When a data signal is established with the main control panel, the Fault LED will switch off and the
detector will be in operation. Check your Parksafe panel for gas detector status.
Do not remove the gas sensor module under power!
LED Indicators
Power
The Power LED will remain illuminated when power to the detector is present.
Fault
An issue with the gas sensing module, i.e. it has been knocked or damaged.
The gas sensing module has reached the end of its expected lifecycle.
Alarm
The system is in alarm condition because dangerous gas levels have been detected.
Gas Alarm Levels
GAS TYPE
GOOD
PRE-ALARM
ALARM
Carbon Monoxide (CO)
> 25 ppm
25 -100 ppm
> 100 ppm
Nitrogen Dioxide (NO2)
< 0.7 ppm
0.7 - 2 ppm
> 2 ppm

Installation, Operation & Maintenance Parksafe Gas Detector
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End of Life (EOL)
A message on the Parksafe control panel will indicate that a detector has reached its expected
operational lifecycle. This means the gas sensing module will need to be replaced.
The affected Parksafe detector, the ‘Fault’ LED will remain illuminated.
Expected gas sensor module operational lifecycle.
Carbon Monoxide (CO): 5 Years**
Nitrogen Dioxide (NO2): 2 Years**
**The expected lifecycle is approximate from the first operation and power is continuously supplied. The
expected lifecycle will depend on the type of gas your detector is targeting and may vary depending on
environmental conditions.
No gas levels will be displayed on the control panel - Contact your supplier immediately!

Installation, Operation & Maintenance Parksafe Gas Detector
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MAINTENANCE & TESTING
Cleaning
Keep your Parksafe gas detector in good working order - follow these basic principles;
Remove any dust/debris from the outer enclosure regularly using a slightly damp cloth.
Never use detergents or solvents to clean your device.
Never spray air fresheners, hair spray, paint or other aerosols near the device.
Never paint the device. Paint will seal vents and interfere with the device.
High concentrations of alcohol found in many products may damage, deteriorate or affect the gas sensing
elements –such as; wine; deodorants; stain removers; thinners!
Other gases and substances to avoid; Corrosives (i.e. chlorine & hydrogen chloride); Alkali metals; Basic
or acidic compounds; Silicones; Tetraethyl lead; Halogens and halogenated compounds!
Service Indication
It is recommended that detectors are serviced at least annually from the date of installation for optimum
performance and protection due to sensitivity drifts.
A service message will appear on the Parksafe control panel after one year of detector operation. The
detector will still operate during this time but contact your supplier immediately.
You should not attempt this yourself and should employ the services of a specialist company!
Manual Operation Test
This option gives the engineer the opportunity to test each relay/output in response to gas.
When the test button on the detector board is pressed and held –the detector will simulate an open
circuit to ensure all configured systems, outputs, alarms, indications and other external devices operate as
intended in response to gas.
When the test button is released –the test sequence will terminate and return to normal operation.

Installation, Operation & Maintenance Parksafe Gas Detector
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Gas Testing Overview
A detector may visually appear in good order, but its sensitivity can be inhibited by external factors such
as, dust; humidity; temperature fluctuations; cleaning products; contaminants or sensor drift (ageing). All
can cause a decline in sensitivity and eventual failure.
Regular ‘bump’tests are important to make sure a device is able to detect a release of gas as early as
possible. We recommend that gas tests are carried out at least annually from the date of installation
however the frequency should be determined following a risk assessment by the end user and in
accordance with any applicable law/code.
The aim of the bump test is to make sure a gas detector is working at its optimum by briefly exposing the
unit to a known concentration of the target gas. The reading (if displayed) can be compared to the actual
content of gas present, as stated on the test gas cylinder and if the detector goes into alarm within an
acceptable range of the actual concentration and all system outputs/relays activate, then it is working
safely.
If the bump test results are either not within the acceptable range or the system fails to operate as
intended in an alarm state, the gas detector must not be used until a full inspection and service has been
conducted.
For more information on this, contact us.
Gas Testing Kits
AGS provide a range of test gas kits traceable to appropriate standards and usually consist of:
•Certified gas cylinder / spray.
•Flow Control Regulator / Control Valve
•Tube pipe / applicator cone
All certified test gases are classified as non-flammable and non-toxic, however, they do contain gas
under pressure and may explode if heated to extreme temperatures and cause asphyxiation in high
concentrations.
Use in accordance with Safety Data Sheet - available on request.
Gas Sensor Types & Reaction Times
The time for gas sensors to react to their target gas will vary dependant on the type of gas detector/gas
sensing element. You should always refer to the appropriate specification for information including sensor
type and alarm levels i.e. electro-mechanical sensors (such as Carbon monoxide detectors) will react to
its target gas slower than semi-conducting sensor types (such as methane, LPG and Hydrogen detectors).

Installation, Operation & Maintenance Parksafe Gas Detector
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Parksafe Gas Testing Procedure
Recommended gas concentrations for testing your mini-merlin system.
Carbon Monoxide (CO)
250-500ppm** in air.
Nitrogen Dioxide (NO2)
10ppm** in air
**Reference should always be given to any applicable national & local law and industry codes.
Generally, the gas concentration should be greater than the alarm threshold of the device.
1. Ensure you have the correct gas for the device type prior to application.
2. Screw the regulator/valve into the gas cylinder outlet.
3. Once sealed, the regulator pressure gauge (if available) will indicate cylinder pressure.
4. Offer up the applicator hose/cone and fully cover the sensing element on the front case.
5. Open the valve/regulator to allow the gas to be delivered at a pre-set flow rate.
6. Apply gas.
7. The detector Alarm LED will illuminate after a short period of time.
8. The Parksafe control panel will activate all configured outputs/relays and will also display the gas
concentration detected by the device under test.
At this point…
9. Remove applicator hose/ cone and turn the gas cylinder regulator/valve off.
10. Press Silence on your control panel.
11. Once the detector has returned to normal –press Reset on the Parksafe control panel.
12. Test complete.
13. Record your test details. There is a provision for this in the Parksafe control panel manual.
Always remove the regulator/valve after use - All cylinders will re-seal upon removal of the regulator!
Never use expired or ‘near empty’ gas cylinders!
Always give at least five (5) minutes between testing the same unit!
If in doubt, contact your supplier.
Test Gas Storage & Handling
All test gases are classified as non-flammable and non-toxic, however, they do contain gas under
pressure and may explode if heated to extreme temperatures and cause asphyxiation in high
concentrations.
Cylinders should be stored in the vertical position and secured to prevent them falling over.
Keep away from all sources of ignition.
Store in well ventilated areas.
Do not lift single cylinders by the valve device unless they are designed for that purpose.
Ensure valve/regulators are screwed and secured tight.
Always remove the regulator/valve after use and at the end of each working day.
Do not remove or deface cylinder labels.
Always use in accordance with Safety Data Sheet - available on request.

Installation, Operation & Maintenance Parksafe Gas Detector
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Engineers Notes (Blank)

Installation, Operation & Maintenance Parksafe Gas Detector
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Installation Details
Please pass this manual to the system owner / user.
Date of Installation:
Installation Location:
Organisation:
Stamp/ Signature of the installer:
American Gas Safety LLC
Head office:
6304 Benjamin Road, Suite 502, Tampa, FL 33634
Tel: [phone]
F
[email protected]om
American Gas Safety LLC is the owner of this document and reserves all rights of modification without prior notice.