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3. Installation 

You will need a small flat head screwdriver and 
some cable to install your alarm.  

Power Supply

 

• 

The power supplied 

must come from the vessel’s 

Master Switch in order to activate the Gas Alarm 
whenever the power is on. 

• 

The Twin Channel Gas Alarm will work on a 12V 
or 24V supply. 
 

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 protected from the elements and the 
ventilation holes should 

not

 be covered up. 

• 

The LPG sensors should be mounted as low as 
possible in a position where they will remain dry 

 

near gas appliances at floor level or just 
underneath floorboards is ideal. 

• 

There are cable routing and mounting holes on the 
rear and bottom of the unit casing. 
 

Summary of Contents for Twin Channel Gas Alarm

Page 1: ...Gas Detection Specialists TWIN CHANNEL GAS ALARM USER MANUAL...

Page 2: ......

Page 3: ...5 2 2 Liquid Petroleum Gas Sensor 7 2 3 Technical Specification 8 3 Installation 9 3 1 Wiring 10 3 2 Pin Definitions 11 4 Initialisation Testing 12 4 1 Initialisation 12 4 2 Testing 13 5 Alarm 14 6 Tr...

Page 4: ...ion on any operational queries or troubleshooting issues you may have The Twin Channel Gas Alarm is ideal for small and medium sized vessels as it supports two LPG sensors This product range provides...

Page 5: ...arm The device supports 2x Liquid Petroleum Gas LPG Sensors and will work with 12V or 24V systems In the box you will have 1 Twin Channel Gas Alarm Main Unit 2 LPG sensors with 3 5m cable 1 User manua...

Page 6: ...the front panel of your Twin Channel Gas Alarm is the Power Indicator This LED illuminates green when the unit is powered on State Power The unit is power on correctly off There is no power to the uni...

Page 7: ...first is the ALARM LED and will illuminate red when gas is detected The second is the FAULT LED and will illuminate yellow when a fault is detected The test button can be used to see if the unit alarm...

Page 8: ...ive limit LPG gases are heavier than air therefore the LPG sensor must be located near to the floor State Channel LED s An OFF LED shows that the channel is operating correctly SOLID yellow FAULT LED...

Page 9: ...ue Description Supply Voltage 12 24V Supply from your system battery Current Draw Standby 140mA When alarm not sounding Current Draw Alarming 140mA When alarm is sounding Number of sensors 2 Supports...

Page 10: ...r 24V supply 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 protected from the elements and the ventilation holes...

Page 11: ...s into the block Wires are secured using a flat head screwdriver To avoid confusion use wire colours that match the colours in the wiring diagram Be sure to wire the cables through the cable routing h...

Page 12: ...Positive power supply 2 Negative power supply Common Ground 3 Sensor 1 Positive 4 Sensor 1 Negative 5 Sensor 1 Signal 6 Sensor 2 Positive 7 Sensor 2 Negative 8 Sensor 2 Signal 9 Not Used 10 Not Used 1...

Page 13: ...ll illuminate and the red LED will flash every second alongside a beeping sound During this time the unit will check for attached sensors and start the initialisation process The initialisation proces...

Page 14: ...mmediately sound the alarm and illuminate the red LED 2 By allowing a small amount of lighter fluid vapour to pass by the LPG sensors This will test the sensor itself All Twin Channel Gas Alarms and s...

Page 15: ...he event of an alarm ensure that nothing is used which could ignite gas matches engine ignition etc Ventilate the area by opening doors and hatches Vacate any interior cabins and remain outside until...

Page 16: ...the sensor Frequent false alarms Contaminated Sensor or other gases present Sensor over 2 years old Replace the sensor Regular beeping while not initialising or Fault light is lit Low supply voltage C...

Page 17: ...ars as their sensitivity can change over time To replace the LPG sensors 1 Switch off the power supply 2 Remove the top cap from the sensor housing 3 Remove the sensor from the housing 4 Gently insert...

Page 18: ...the sensors to extreme temperatures below 0 C or above 60 C Handle sensors or unit internals while powered up Connect more than the max number of sensors to the unit DO Replace the sensors after the r...

Page 19: ...ails Website www envinsci co uk Online Shop www envinsci co uk envin shop Email info envinsci co uk Telephone 44 0 1829 771 792 Address Envin Scientific Limited Technology House Chowley Oak Tattenhall...

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