AGS Merlin 1000S Panduan Pemasangan & Pengoperasian - Halaman 5

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Installation & Operation Manual

3. 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

4. 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.

5. EM REMOTE

Connections for remote emergency shut-off or stop buttons is detailed on the circuit board as

[EM REMOTE]. This is linked out as a factory setting.

Remote emergency shut-off buttons should be volt free and wired to the Merlin 1000S using a

plenum security cable, white, 18/2 (18AWG 2 conductor), stranded, CMP or similar.

6. GAS DETECTOR

Connections can be made for a Merlin gas detector (LPG, NG, CO or Hydrogen).

If no detector is being used leave the factory fitted link in.

A wiring example is shown.

Refer to your gas detector manual for further information.

1000S IOM Rev: 07

[

]

01-20

Merlin 1000S