AGS Merlin 1000SW+ Manuale di installazione e funzionamento - Pagina 5
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Installation & Operation Manual
3. ELECTRIC CONTACTOR OUTPUT
100-120V AC electrical power supplied from the [ELECTRIC CONTACTOR] connector using a 3
core cable can be connected to a contactor.
Refer to your contactor manual for more information and wiring!
4. WATER VALVE OUTPUT
100-120V AC electrical power supplied from the [WATER VALVE] connector using a 3 core
cable can be connected to a contactor.
Refer to your water valve manual for more information and wiring!
5. BMS OUTPUT
Connections are available on the board for Building Management Systems.
[NO Normally Open] [COM Common] [NC Normally Closed]
These are volt free 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
6. PRESSURE SENSOR
The pressure sensor is wired to the [PRESSURE SENSOR] connector and screwed into the
downstream port of the gas solenoid valve.
Connect the pressure sensor as shown:
Red
[+]
Black [-] Blue
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 pressure sensor operating pressure is: 0 – 1.45psi.
Screw the pressure sensor into the downstream port of your gas solenoid valve.
1000SW+ IOM Rev: 09
[
]
IN
01-20
Merlin 1000SW+
5