Operation & Setup Guidance; How To Turn The System On And Off; Using The Emergency Shut Off; Building Management System Connection - S&S Northern Merlin 1000BH User Manual

Merlin 1000BH
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Operation & Setup Guidance
3.1

How to turn the system on and off

Turn the key switch to ON position.
Turn the key switch to OFF position or remove power.
3.2

Using the Emergency Shut Off

The Emergency shut off button is located on the front of the panel.
There is also a facility for remote shut off buttons to be wired in series.
The Emergency shut off button(s) will cut off the gas supply when activated.
To reinstate the system, the Emergency shut off button(s) will need to be reset and the panel
restarted.
3.3

Building Management System Connection

The Merlin 1000BH can be integrated with a BMS to make or break a
circuit on gas on/gas off, (valve open or valve closed). This will tell the
BMS whether or not electrical power is being sent to the solenoid.
There is a dip-switch located on the inside facia of the Merlin 1000BH
labelled [BMS SEL].
This is factory set in the 'OFF' position which signals the BMS on gas
on/gas off. When switched to the 'ON' position, the 1000BH will only
signal the BMS on a fault, i.e. gas detected, EM Stop pressed, etc.
3.4

Gas Fill and Prove Time

Gas fill and prove times are adjustable. There are two dip-switches located on the inside facia
of the Merlin 2000S labelled "Fill Time" and "Prove Time". They are factory set in the 'off'
position.
Fill and prove time can be changed by turning the relevant dip switch to on position.
FILL TIME is the amount of time the gas valve is open to fill the gas line.
Off – 5 seconds
On – 10 seconds
PROVE TIME is the amount of time the system tests the gas line for any leaks.
Off – 30 seconds
On – 50 seconds
Once the settings has been changed please remove power for 10 seconds.
Rev: 07 05-19
User Guide
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