Installation, Operation & Maintenance Merlin CO2 TFT
Rev 1 05-21
9
Traffic Light Indicator
Your CO2-TFT displays both current CO
2
and temperature levels in a traffic light style indication.
Alarms & Configuration
NAT. -
Natural Ventilation Mode (N)
Green: <1300ppm <23 °C/ 73.4°F
Yellow: >1300ppm >23 °C/ 73.4°F
Red: >1500ppm >25 °C/ 77.0°F
CO
2
Pre-alarm relay switch: 1300ppm
CO
2
Alarm relay switch: 1500ppm
0-10V Analogue Output Progression.
Min output (1-5V) from 600ppm 23 °C/ 73.4°F
Max output (10V) from 1500ppm 27 °C/ 80.6°F
Boost from: 400
- 1499ppm 0°C/32°F – 26.9°C/80.4°F
MECH. -
Mechanical Ventilation Mode (M)
Green: <800ppm <23 °C/ 73.4°F
Yellow: >800ppm >23 °C/ 73.4°F
Red: >1000ppm >25 °C/ 77.0°F
CO
2
Pre-alarm relay switch: 800ppm
CO
2
Alarm relay switch: 1000ppm
0-10V Analogue Output Progression.
Min output (1-5V) from 600ppm 23 °C/ 73.4°F
Max output (10V) from 1000ppm 27 °C/ 80.6°F
Boost from: 400 - 999ppm 0°C/32°F – 26.9°C/80.4°F
KITCH. –
Kitchen/Gas in Use Ventilation Mode (K) Default
Green: <1500ppm <23 °C/ 73.4°F
Yellow: >1500ppm >23 °C/ 73.4°F
Red: >2800ppm >25 °C/ 77.0°F
CO
2
Pre-alarm relay switch: 2800ppm
CO
2
Alarm relay switch: 4500ppm
0-10V Analogue Output Progression.
Min output (1-5V) from 600ppm 23 °C/ 73.4°F
Max output (10V) from 2800ppm 27 °C/ 80.6°F
Boost from: 400 - 2799ppm 0°C/32°F – 26.9°C/80.4°F
Buzzer alarm/ Mute from: >2800ppm
The alarm thresholds and configuration will depend on which ventilation mode your CO2 TFT has been set.
There is no audio alarm for high temperatures.
Screen Saver Mode
If the screen saver mode is switched on (see settings), the CO2 TFT monitor screen will switch off when both CO
2
and Temperature levels are at safe levels (green). No readings or messages will be visible during this time.
The
screen will exit screen the saver mode when either the CO
2
or Temperature changes status (yellow or red).
To view the screen during this mode, press the touch button, the screen will be visible for 10 seconds.
SAFE
Safe CO
2
levels or temperature will
be displayed GREEN.
ATTENTION!
Low CO
2
levels or temperature will
be displayed YELLOW.
DANGER!
High CO
2
levels or temperature will
be displayed RED.
