AGS Merlin Guía

Merlin Gas Detectors User & Installation Manual

Rev: 08 Date: 18-10-18 1

Gas Safety Products

Merlin Gas Detectors

Installation, operating and maintenance

Read these instructions carefully before operating or servicing

Merlin Gas Detectors User & Installation Manual

Rev: 08 Date: 18-10-18 2

Attention

The unit should be installed by a competent person only.

The expected life time of the detector/sensor element is:

LPG, Methane and Hydrogen = 10 years. CO = 5 years.

The unit should be stored in cool, dry conditions.

We do recommend that this product is serviced annually.

If the unit is found to be damaged –Contact us.

IMPORTANT: Carbon Monoxide (CO).

This apparatus is designed to protect individuals from the acute effects of Carbon Monoxide exposure.

It will not fully safeguard individuals with specific medical conditions.

If in Doubt consult a medical practitioner.

Table of Contents

1 General information .....................................................................................................3

2 Installation ......................................................................................................................3

3 Operation.......................................................................................................................3

4 Specification..................................................................................................................4

Wiring Diagram .......................................................................................................................5

Merlin Gas Detectors User & Installation Manual

Rev: 08 Date: 18-10-18 3

1General Information

American Gas Safety LLC supply a full range of remote gas detectors that are compatible with

our range of Merlin panels. These consist of carbon monoxide, natural gas, LPG detectors.

2Installation

2.1 Mounting & Position

The control panel is designed for surface mounting using two mounting screws. Removing the

back plate gives access to the circuit board. Do not attempt to remove the PCB.

For the positioning of specific gas detectors please see below:

Natural Gas –12” from the ceiling.

Hydrogen Gas –12” from the ceiling.

LPG –40” from ground level.

Carbon Monoxide –Commercial Kitchens: 67” from ground level.

Commercial Plant Room: 40” from ground level.

2.2 Power Supply

A 12 –24VDC electrical supply should be supplied to the panel and should be connected to

the terminals marked [POWER + -].

2.3 Alarm Relay

Our range of Merlin Gas Detectors can work with various Merlin systems.

If you are using our GDP range you will need to use the [C/L] terminal as an alarm relay

whereas on most other systems gas detectors should be wired to the gas detector terminal on

the Merlin panel using the [N/C] & [COM]. See Wiring Diagram at the end of this document.

xxxTo Avoid Electrical Interference. All low volt connections should be made using a screened cablexxx

3Operation

3.1 Detector ON & OFF

ON - Supply power to the detector

OFF - Remove power to the detector

3.2 LED STATUS

Power - Detector is ON.

Low - When the detector has reached low level alarm –LOW LED will illuminate.

High - When the detector has reached High level alarm state this will illuminate and

the buzzer will sound.

Please see below for further LED information.

Merlin Gas Detectors User & Installation Manual

Rev: 08 Date: 18-10-18 4

4Technical Specification

Power supply

7-30VDC, 80mA max

Gas Sensor

Methane/LPG/Hydrogen - Semiconductor Type

Carbon Monoxide –Electro-Chemical Type

Typical Measuring Range

Methane 300-10000 ppm

LPG 300-10000 ppm

Carbon Monoxide 10-10000 ppm

Hydrogen 100-10000 ppm

Power Up - Warm Up Time

1 minute

Low Level Alarm

(pre-alarm)

Methane 8%LEL by volume

LPG 0.16% by volume

Carbon Monoxide 30ppm

Hydrogen 8%LEL by volume

High level alarm

Methane 10%LEL by volume

LPG 0.2% by volume

Hydrogen 10%LEL by volume

Carbon Monoxide

30 ppm for 2 hours

50 ppm for 1 hour

100 ppm for 10 minutes

300 ppm for 1 minute

Volt Free Relay Output

240VAC 500mA, 30VDC 2A switching current (resistive load)

Net weight

Dimensions

180g

(W)x5.27”(H)x3.66”(D)x1.45”

Installation standard

See Section 2

Carbon Monoxide (CO)

Fixed Unit Location Recommendation

Take in to account the design of the air flow within the space. Positioning CO detectors near

draft will greatly diminish their reliability. Multiple detectors may be required to adequately

protect the space.

Merlin Gas Detectors User & Installation Manual

Rev: 08 Date: 18-10-18 5

Wiring Diagram

[+] Power supply, Positive connection from Merlin panel.

[-] Power supply, Negative connection from Merlin panel.

[CL] Alarm relay, Alarm signal to GDP panel.

[N/C] Alarm relay, Volt free connection. Normally Closed.

[COM] Alarm relay, Volt free connection. Common.

[N/O] Alarm relay, Volt free connection. Normally Open.

For more information, contact us.



PLEASE NOTE

MAINS AND LOW WIRING SHOULD NOT RUN IN THE SAME CONDUIT

Merlin Gas Detectors User & Installation Manual

Rev: 08 Date: 18-10-18 6

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.

AGS Head Office

Tel: (727) 608-4375

Fax: (727) 538-4237

info@americangassafety.com

AGS is the owner of this document and reserves all rights of modification without prior notice.

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