Merlin 1000BH Gas Proving/Gas Detection System
Product Data Sheet
S&S Northern Ltd
3
1
General information
The Merlin 1000BH is a gas pressure proving & gas detection panel for use in various
applications.
The system comprises a control panel and a gas pressure sensor. The Merlin 1000BH can
receive connections from remote emergency shut-off buttons, two gas detectors, fire panel and
heat detector. It also can be integrated with a BMS.
It is recommended that the user reads this guide before using the system. Please do NOT
attempt to operate the unit until the contents of this document have been read and are
thoroughly understood.
2
Installation
2.1
Panel Mounting.
The control panel is designed for surface mounting using 4 mounting screws.
Removing the cover on the panel gives access to the circuit board. The PCB should be
removed before drilling entry holes into the case.
2.2
Mains Supply.
A 230volt electrical supply should be supplied to the panel. This should be
externally fused at 3 Amps using a fused spur and should be connected to the terminals
marked ”LNE Power”
2.3
Gas solenoid valve.
The gas solenoid valve should be powered using the terminals on the
Merlin 1000BH
marked “LNE to GAS VALVE”.
2.4
Gas Detector.
The
terminals detailed on the circuit board as “Gas Detector 1” and “Gas
Detector 2”. These connections are “+,-“ and ”
” these can be wired to a Merlin Natural gas,
Carbon monoxide or LPG detector. If no detector is being used l
eave the link in between the “
”. Other detector types are available.
2.5
Gas Pressure Transducer.
The terminals marked pressure sensor “+ - in “.These wire to the
gas pressure transducer which is screwed into the downstream port on the gas solenoid valve.
Red + positive, Black
– negative and Blue IN. Please ensure this is wired as instructed.
Minimum Operating Pressure = 12Mbar
Maximum Operating Pressure = 100Mbar.
2.6
Remote emergency shut off buttons.
The terminal for remote emergency shut-off buttons is
detai
led on the circuit board as “EM Remote”. These connections are linked out as a factory
setting. Remote emergency shut-off buttons should be volt free and wired to the Merlin
1000BH using two-core cable.
2.7
BMS Connections.
Terminal connections are available on the circuit board for connections to
Building Management systems etc. Detailed on the circuit b
oard as “BMS OUT N/O, Com and
N/C
” these are volt free connections.
2.8
Fire Alarm.
The terminal for fire alarms is detailed on the circuit board as “FIRE PANEL”.
These connections are linked out as a factory setting. Fire alarms should be volt free and wired
to the Merlin 1000BH using two-core cable.
2.9
Heat Detector.
The terminal for heat detectors is detailed on the circuit board as “TEMP
SENSOR”. These connections are linked out as a factory setting. Heat detectors should be volt
free and wired to the Merlin 1000BH using two-core cable.
2.10
12v DC.
This is a permanent 12v DC output when there is power at the panel.
2.11 Internal Buzzer.
Operates at 65dB measured 30cm from closed panel.
