AGS Merlin 1000S+ Instalación Funcionamiento y mantenimiento - Página 5

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Installation & Operation Manual
Merlin 1000S+

Circuit Board Connections Overview

POWER / LINE IN
110-120V AC Power should be supplied to the [POWER / LINE IN] terminal and fused at 3A.
GAS SOLENOID VALVE OUTPUT
110-120V AC electrical power supplied from the [VALVE OUT] connector using a 3-core cable can be
connected to a gas solenoid valve which can shut the gas supply on alarm status.
ELECTRIC CONTACTOR OUTPUT
110-120V AC electrical power supplied from the [ELECTRIC CONTACTOR] connector using a 3-core
cable can be connected to a contactor.
BMS OUT
Connections are available on the board for Building Management Systems.
[NO Normally Open] [COM Common] [NC Normally Closed] These are dry connections.
This is a relay that changes state in alarm or when the gas is on/off and can be used in conjunction with
the 12V DC output and other external relays that affect other devices and controls such as purge fans
and audible alarms etc. See section; Switch Settings - for BMS options
PRESSURE SENSOR
The pressure sensor is screwed into the downstream port of the gas solenoid valve.
Connect the pressure sensor as shown: Wiring: Red
[+]
Black [-] Blue
[
]
IN
The sensor will monitor the gas supply pressure and if pressure drops below 0.17psi – the gas valve will
close as this could mean a gas leak is present. The operating pressure is: 0 – 1.45psi.
Rev: 13
08-22
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