S&S Northern Merlin CT1250, Руководство пользователя

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Merlin CT1250
User Guide
Rev: 08 07-19 4
2
Circuit Board Terminals
2.1 Power
A 100-240VAC mains electrical supply should be supplied to
the panel. This should be externally fused at 3 Amps
connected to the terminal detailed [POWER IN].
2.2 Gas Valve Output
This is a 100-240VAC power output for connections to a gas
solenoid valve detailed on the board [TO VALVE].
2.3
Building Management System (BMS)
Connections to Building Management systems.
This is a relay that changes state in alarm or when gas is on/off and other
external relays that affect other devices and controls such as purge fans,
audible alarms etc.
Detailed on the circuit board as [TO BMS] normally closed (N/C), common
(COM) and normally open (N/O). These are volt free connections.
2.4
Remote Emergency Buttons
The terminal for remote emergency shut-off buttons is detailed on the circuit
board as [EM REM].
These connections are linked out as a factory setting.
Remote emergency shut-off buttons should be volt free and wired to the
CT1250.
2.5
Supply and Extract Fan PD Switches
These terminals are used to receive an input signal from external air
pressure switches or external current monitors.
These are linked out as a factory setting as shown.
Wiring to switches & current monitors should be made using two-core
volt free connections.
If only one fan is being used the terminals not in use should be left linked
out.