Installation & Operation Manual Merlin 1000S+
1000S+
IOM
Rev: 9 07-20
6
8.
FAN SWITCHES
This terminal switches when the key is turned on and off.
This can be connected to a fan switch (supplied separately) which can provide power to fans
when the control panel is switched on.
9.
CO2 MONITOR
This terminal can be used to connect a Merlin CO
2
monitor to shut off the system in the event of
a high concentration of CO
2
.
If no CO2 monitor is connected, the panel will ‘beep’ upon power up and the CO2 LED will
flash 3 times to indicate that this terminal has been disabled.
An external power supply is required.
Refer to your CO
2
monitor manual for further information.
10.
12V DC
This is a power output for external auxiliary devices when there is power at the panel and can
be used to create a relay switch with the BMS relay output.
Max output: 50mA
