EnviroTech Alarms GasHunter 1 Manual de usuario

Helpline Telephone: 0330 1595933 Installation and Operation manual - GasHunter1 System Further information is available on our website

The GasHunter 1 detects the presence of gases in environments where it is not

supposed to be. Should gas be detected the alarm panel will trigger an internal buzzer

and an LED will start to flash. There are also a number of volt free relays that will switch

when gas has been detected.

OUTPUTS ARE AVAILABLE?

?3 X 2 amp Volt free changeover common alarm relay. Will switch state on detecting

an alarm. Perfect for connection to a BMS, an external sounder/beacon, for

switching on a pump or triggering a telephone dialler.

?12VDC output for running low voltage devices directly from the panel.

?Power fail relay will switch should the mains power be interrupted.

?Output connector for Echo repeater panel used for remote monitoring in a different

location to the main panel location.

?Mute button - silences the panel after an alarm has been triggered as well as used to

reboot the panel should a fault occur.

?Onboard LED outputs for System Healthy, Power On, Gas Leak Detected, Line Fault

and Power Fail.

?12VDC 1.2 aH Battery back up 20 hours in standby mode.

Alarm status light

Off - All OK

Red Flashing - Leak Detected

Fault monitoring

(continuously monitors the gas

probes connected for breaks in

continuity)

Green - All OK

Red - Fault Detected

Power On

Green - ON

Power Off

No Light

Power Fail

illuminates to

indicate running on

battery backup

Alarm Test

illuminates when

test button pressed

Alarm Test

Button

(press to ensure that the LED

lights are functioning correctly)

Mute

Button

(press to silence the audio

alarm)

GASHUNTER 1 GAS LEAK DETECTION ALARM PANEL INSTALLATION AND OPERATION MANUAL

TYPICAL CONFIGURATION

TECHNICAL SPECIFICATION

Product Overview:

The GasHunter 1 is a gas leak detection alarm panel designed to notify that a gas leak

has occurred. Each alarm panel has the capability to connect to gas sensor probes. The

GasHunter 1 has 3 output relays and a battery back up as standard.

MAIN FEATURES:

Gas Sensor Probe Visual alarm output

Sensor fault monitoring Connection to BMS and valves

3 x volt free relay contacts Auto resets after leak has been fixed

Inbuilt audible alarm output

Supply Voltage: Self sensing 120VAC to 240VAC 40 - 60Hz +/- 15%

SMPSU

Current burden on standby: 35 Watts @ 230Vac +/-15%

Alarm Relay: DPCO volt free contact

Contact rating: 2A@250Vac resistive

Fault Relay: SPCO volt free contact 1A@50Vac resistive (signal

only NOT MAINS VOLTAGE)

Power Fault Relay: SPCO volt free contact

Contact rating: 2A@250Vac resistive

PER ZONE Alarm Relay: DPCO volt free contact

Contact rating: 2A@250Vac resistive

Supply Current: 3A max

Each Sensors Inputs: One set of terminals (can take more than one

sensor) terminated with a signal diode

Sensor Types: Gas Probe Sensors

Maximum Cable Length: 100m connector cable

Alarm LED : 5mm Flashing Red. 1 for each zone

Fault/Healthy: LED: 5mm TRI colour. Green zone healthy & Red

zone fault

Alarm Hysteresis: Detects between 3K ohms & 20K ohms dependant

on the sensitivity adjustment potentiometer

Audible alarm output: 80db@10cm continuous tone

Electrical Connections: All un-pluggable terminals sized 0.5-2.5mm2 cable

GAS LEAK DETECTION

Single Sensor gas leak detection

WHAT DOES THE PRODUCT DO?

The Gas Sensor has the capability to detect the presence of

gas and help reduce the impact of gas emissions resulting

from leaks. Ideal for installing on external condensers, AHUs

condensing units, compressor housings and chillers.

Adjustable alarm thresholds allow for multi level settings

enabling staged alarm settings to give pre-alarm and a full

alarm monitoring.

HOW DOES IT WORK?

The sensors are mounted in any area where gases are used

and monitor continuously for the presence of gas. In the

event of a leak, the gas will be detected immediately and the

sensor will output an audible alarm and trigger the alarm

panel.

Key Features

?Pre-calibrated to type of gas needing detection.

?Quick and simple to install.

?Enclosed housing.

?Low maintenance.

?LED Status and alarm indication.

?Audible alarm.

The gas detection sensors come pre-calibrated to detect gases including refrigerant

R134a and R410a. The housing is suitable for mounting on a wall and require minimal

maintenance. There is an onboard audible alarm to help pin point the location of the leak

as well as LED lights to show the status of the sensor. The sensors can be set to have a

delay that will allow small escapes of gas (e.g. caused during maintenance) without setting

off an alarm.

142mm

86mm

53mm

Periodic Maintenance:

The sensors should be re-calibrated at least once a year to ensure they remain in full operational mode.

Mains 230VAC

. .NEL

Battery

Echo Repeat Panel

connection

Additional relays x2

240volt 2 amp

12 volt DC

output

Sensor Connections

+ / -

Sensitivity Adjustment

more less

sensitive

Cable Fault

Relay Output

INSIDE THE PANEL

Power fail relay

240volt 2 amp

Mains Fuse

2 amp

Battery Fuse

1 amp

Gas-Hunter

Alarm Panel

To Sensor

Gas Sensor

Installing the gas sensor

Ensure there is a diode across the

input terminals in the gas sensor.

This is used for monitoring for cable

faults.

Installing multiple sensors

Please note that due to the amount of current required it is only possible to connect a maximum of 4 gas sensors to any panel.

Wiring in Series (max of 4 sensors)

-V (Black)

+V (Red)

12V DC output

- (Blue)

+ (Yellow)

SENS Connection

Ensure there is a diode across the

input terminals in the last gas

sensor only. This is used for

monitoring for cable faults.

Connecting to a BMS

Connect a pair of wires (0.22mm - 1mm) to the Common and Normally Open on the Alarm Zone 1

relay. Connect the other end to the input on the BMS panel.

(the colour of the wires are examples only)

It is possible to connect the GasHunter 1 alarm panel to a BMS panel. When a leak is detected the

alarm relay in the GasHunter 1 panel will switch from open to closed and signal to the BMS.

BMS Panel

Connecting an SMS Dialler

N E L

SIM

Pre-wired power connection

Connect a pair of wires (0.22mm - 1mm) to the Common and Normally Open on the Alarm Zone 1

relay. Connect the other end to the GND and IP1 input connections in the SMS Dialler.

(the colour of the wires are examples only)

It is possible to connect the GasHunter 1 alarm panel to an SMS dialler that will send a text message

should a leak occur. Settings for the SMS dialler can be found in the manual that comes with this

equipment. The SMS dialler requires a 230VAC supply as shown below.

Connecting to a Beacon/Sounder

Connect a pair of wires (0.22mm - 1mm) to the 12V battery connector. The positive side of this connection goes to the common of the common

alarm relay (1 or 2) and the negative side goes directly to the beacon/sounder. Take a switch wire from the Normally Open (NO) of the relay and run

this to the beacon/sounder. Connect the positive side to the chop block pre-wired with RED and the negative side to the chop block pre-wired with

BLACK. When the alarm panel detects a water leak, the relay will close and the beacon/sounder will activate.

It is possible to connect the GasHunter 1 alarm panel to a beacon, a sounder or a beacon/sounder.

The power and switching for any of these are taken directly from the alarm panel as shown below.

Wire taken from the Normally Open (NO) of the relay to the chop block connector in the beacon/sounder pre-wired with RED

Wire taken from the negative of the battery connector to the chop block

connector in the beacon/sounder pre-wired with Black

Common

Alarm

Relay (1)

Common

Alarm

Relay (2)

Wire taken from the positive of the

battery connector to the Common

of the relay (this will provide a 12V

supply to the relay)

Trouble Shooting Guide

Helpline Telephone: 0330 1595933 Installation and Operation manual - GasHunter1 System Further information is available on our website

Testing

To test the alarm is working:

Use a gas canister containing the same gas as would be present should a leak occur and emit a small amount adjacent to the sensor.

This will trigger an alarm and set the sensor and alarm panel off. Using this method requires the test area to be completely devoid of

gas following the test in order to reset the panel. There could be a delay time following the test before the system self resets.

System shows an alarm but

no gas is present:

?Is there anything conductive shorting across the input terminals where the cables

connect.

?Is there another gas present.

?Does the connection cable length exceed more than 100m.

System shows a line fault: ?Is there a diode installed across the input terminals of the gas sensor.

?Are there any breaks in the cables.

?Are all the connectors correctly connected.

?To assess where the fault is, put a diode in the sensor terminals of the alarm

?panel to see if the problem goes away, if it does the panel is working correctly

and the problem is somewhere on the cable or in the oil sensor.

System shows no power: ?Is there an appropriate supply to the panel.

?Is the wiring to the panel sound and secure.

?Is the L/N/E connected to the correct terminals.

?Use a continuity test to check the fuses.

PROBLEM SOLUTION

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