Pilot Communications 2011319/716/12 User manual

Gas Monitoring System &
Twin Channel Gas Alarm
Operation and Maintenance Manual

Contents
Introduction..................................................................................................1
Gas Monitoring System.........................................................................1
Twin Channel Gas Alarm.......................................................................1
Technical Specifications...............................................................................2
12v Gas Monitoring System 2011319/716/12...................................2
24v Gas Monitoring System 2011319/716/24...................................2
12v Twin Channel Gas Alarm 2011112/716/12.................................3
24v Twin Channel Gas Alarm 2011112/716/24.................................3
Installation....................................................................................................4
Power Supply.........................................................................................4
Suitable Installation Locations..............................................................4
Valve Gas Monitoring System Only....................................................5
Procedure..............................................................................................5
Operation.....................................................................................................7
Initialisation Process..............................................................................7
Valve and Testing..................................................................................8
Sensor Replacement..............................................................................8
Warnings.......................................................................................................9
DO NOT:.................................................................................................9
DO:.........................................................................................................9
Troubleshooting.........................................................................................10
Spares.........................................................................................................11
Sensors................................................................................................11
Valves (Not for use with the Twin Channel Gas Alarm)......................11
Contact.......................................................................................................12

Introduction
This user manual will cover the 12 and 24v version of both the Pilot Gas
Monitoring System and the Twin Channel Gas Alarm.
The Pilot range of gas monitoring alarms are important and cost effective
items of safety equipment wherever LPG may be present.
However good a gas installation may be, there is always a chance that a
potentially lethal leak may occur. Vapours present on boats such as
butane, propane and petrol vapour are heavier than air. Even a small leak
can build up to dangerous proportions in the bilges of a boat.
Gas Monitoring System
The Gas Monitoring System (GMS) is designed to work with two LPG
sensors. This allows a greater coverage of gas detection for your boat.
The GMS is also supplied with a solenoid valve which is installed in your
gas supply. Your gas supply will then be controlled by the GMS which has
a button to open/close the valve. In the event of an alarm, the GMS will
automatically close the valve to switch off the gas supply.
Twin Channel Gas Alarm
The Twin Channel Gas Alarm is supplied with two sensors. It has all of the
features of the Gas Monitoring System, however, is not compatible with
the solenoid gas valve.
A Gas Valve Controller may be purchased as an add-on to convert a Twin
Channel Gas Alarm into a Gas Monitoring System.
User manuals for the full range of Pilot products are a ailable in PDF
format on the En in Scientific website – www.en insci.co.uk
1

Technical Specifications
12 Gas Monitoring System – 2011319/716/12
Spec. Value Description
Supply Voltage 12v DC
Current 650mA Standby ¼” BSP Valve open
750mA Standby ½” BSP Valve open
185mA Standby Valve closed
200mA Alarm Mode
Max. Sensors 2
Dimensions 120x65x35mm
24 Gas Monitoring System – 2011319/716/24
Spec. Value Description
Supply Voltage 24v DC
Current 190mA Standby ¼” BSP Valve open
350mA Standby ½” BSP Valve open
45mA Standby Valve closed
65mA Alarm Mode
Max. Sensors 2
Dimensions 120x65x35mm
2

12 Twin Channel Gas Alarm – 2011112/716/12
Spec. Value Description
Supply Voltage 12v DC
Current 180mA Standby
200mA Alarm Mode
Max. Sensors 2
Dimensions 120x65x35mm
24 Twin Channel Gas Alarm – 2011112/716/24
Spec. Value Description
Supply Voltage 12v DC
Current 55mA Standby
90mA Alarm Mode
Max. Sensors 2
Dimensions 120x65x35mm
3

Installation
Warning: Disconnect the power supply before proceeding with the
installation.
Power Supply
•The power supply will be either 12v or 24v depending on the
version of gas monitor that you have purchased (See Technical
Specifications to check supply voltage).
•The power supply must come from the vessel's Master Switch
in order to activate the Gas Monitoring System whenever the
power is on.
Suitable Installation Locations
•The main unit should be in a location where the alarm is
audible and the LEDs can be seen. It must be in a location that
is protected from the elements and the ventilation holes
should not be covered up.
•The gas detectors should be mounted in the lowest possible
position where they will remain dry. The most suitable
location for the detector is near any gas appliance at floor
level or just under the floorboards.
•There are four holes in the bottom of the case for routing the
supply, detector, and valve cables. There is also a larger hole in
the back of the system if needed.
4

Val e – Gas Monitoring System Only
•The solenoid valve should be connected down stream of the
regulator and as close to it as possible.
•The base of the valve is marked “1” and “2” for gas in and gas
out, respectively, as shown below (Diagram 1).
Procedure
1. Open the unit by removing the side screws and separating the
two halves of the case.
2. Mount the back half of the case to a vertical surface using the
mounting holes.
3. Pass the two detector head cables and a suitable two-core
power supply cable through the routing holes. Draw sufficient
cable through the holes to enable connections to the PCB in
the front half of the case.
5
Diagram 1: Direction of gas flow

4. Connections to Circuit Board:
•All of the connections for the PCB terminals are shown at
the bottom of this section (Diagram 2). The terminals are
also labelled on the PCB.
•Terminals 9 and 10 are not used for the Twin Channel
Gas Alarm
•Terminal 11 can be used to link together two or more
Pilot Gas Alarms. It may also be used to add a Gas Valve
Controller to a Twin Channel Gas Alarm.
5. Ensure that the all of the wiring is correct.
6. Fit the two halves of the casing back together.
7. Switch on the power at the Master Switch.
6
Diagram 2: Wiring Diagram (Ignore Valve for Twin Channel

Operation
Initialisation Process
•When the unit is powered on, the green LED will illuminate.
•The remaining three lights will flash and an intermittent
audible alarm will sound for approximately 30 seconds.
•The initialisation process may take up to 8 minutes. However,
after the 30 seconds the intermittent alarm will stop.
•If one or both of the sensors have not stabilised yet, the LEDs
will continue to flash.
•During the stabilisation process, the sounder will do a longer
beep once for each sensor when it has completed stabilisation.
•If the number of beeps does not correspond to the number of
sensors connected, switch off the system and check all
connections.
•If the audible alarm continues to sound after the initialisation
process immediate action must be taken:
1. Ensure that nothing is used which could ignite gas e.g.
matches, engine ignition etc.
2. Ventilate the area by opening doors and hatches
3. Investigate and remove any source of dangerous vapour.
4. The Pilot Gas Alarm will stop alarming once the vapour
has been safely removed.
7

Val e and Testing
•To open the valve, push the gas on/off button.
•Note: The valve can only be opened once the sensors have
stabilised and will also automatically close if the alarm goes
off.
•To reconnect the gas supply after the alarm has stopped, press
the gas on/off button.
•The alarm may be tested at any time by pressing the “test”
button. This simulates the presence of gas which should
immediately sound the alarm and close the gas valve.
Sensor Replacement
The gas sensors will lose sensitivity over time. Therefore, it is
recommended to replace the gas sensors every two years. Replacement
sensors available on the Envin Scientific online shop and part numbers are
listed in the Spares section on page 11.
To replace the sensor:
1. Switch the power off
2. Remove the top of the sensor housing
3. Remove the old sensor from the socket
4. Install the new sensor and push the top of the sensor housing
back on until it clicks shut.
5. Switch the power on
8

Warnings
DO NOT:
•Expose sensors to silicone vapours, alkaline metals or a highly
corrosive environment.
•Use cleaning products around the sensors.
•Submerge the sensors in water.
•Expose the sensors to extreme temperatures. (Between -10°C
and 60°C is the recommended operating temperature)
DO:
•Replace the sensors every 2 years.
•Test the alarm regularly.
•Place the sensors into a clean, sealable bag if the boat is to
undergo any maintenance work.
9

Troubleshooting
Symptom Possible Cause Action
Yellow LED with
intermittent alarm
A red or yellow sensor
wire may be
disconnected
Switch off, check
connections, restart.
Otherwise, replace the
sensor
Alarm LED with Alarm A black sensor wire
may be disconnected
See above
Frequent false alarms Contaminated sensor /
other gas vapours in
the air.
Replace sensor
10

Spares
Replacement sensors and valves are available from the Envin Scientific
online shop. See Contact on page 12 for website and online shop
information.
Sensors
Part No. Description
201115 Sensor only
201115-3.5 Sensor with housing and 3.5 meter cable
201115-C Sensor with housing, 150mm cable and connector block.
This can be used to replace just the sensor and housing
so that any routed cables can remain in place.
Val es (Not for use with the Twin Channel Gas Alarm)
Part No. Description
18252/12-1/4 12v ¼” BSP Solenoid Valve
18252/12-1/2 12v ½” BSP Solenoid Valve
18252/24-1/4 24v ¼” BSP Solenoid Valve
18252/24-1/2 24v ¼” BSP Solenoid Valve
11

Contact
Website www.envinsci.co.uk
Online Shop www.envinsci.co.uk/envin-shop
Email [email protected]
Telephone [phone]
Address Envin Scientific Limited
Technology House
Chowley Oak
Tattenhall
Chester
Cheshire
CH3 9GA
12