Installation & Operation Manual Merlin 1500S
Rev: 1 01-21
5
Typical Installation Arrangement
Terminal Connections
1.
POWER / LINE IN
110-120V AC Power should be supplied to the [POWER / LINE IN] terminal and fused at 3A.
2.
GAS SOLENOID VALVE OUTPUT
110-120V AC electrical power supplied from the [VALVE OUT] connector using a 3 core cable can be
connected to a gas solenoid valve which can shut the gas supply on alarm status.
Pressure sensors should be screwed to the downstream port of the valve.
3.
SUPPLY & EXTRACT FAN PRESSURE DIFFERENTIAL SWITCHES / CURRENT MONITORS
These terminals are used to receive an input signal from external air pressure switches or external
current monitors. These terminals have factory fitted links installed.
If only one fan is being used – leave factory fitted links in terminals NOT IN USE!