LumaSense Technologies M340 - Manual (Page 12)

M340 Manual Installation 12
is tight around these openings, ensure that the air leaving the outlet does not have a path to
the inlet (fan). This will cause the cooling/heating system to be inefficient and prevent achieving
the extreme setpoints. This would be similar to running a room air conditioner without
installing it in a window!
3.6 Line Voltage
Read the specification label on the rear panel to ensure the AC LINE voltage you are about to
use matches the voltage on the M340 label (100 or 115 or 230 VAC).
3.7 RS-232C Communication
The M340 has optional serial communication port for automating the calibration process using a
PC. Wiring to this port is covered in the section on Serial Communications.