Lennox Adnova THS Series Installation, Operating And Maintenance Manual page 5

Microprocessor control
The microprocessor built into the unit allows the different operating parameters to be controlled from a set of pushbuttons
situated on the electric control board:
Switching ON/OFF of compressor to maintain the temperature set point "T" inside the shelter.
• Alarm management:
• Alarm signalling.
• Display of operating parameters.
• RS232, RS485 serial output management (optional).
• Phase sequence error (Not displayed by the mP, but prevents the compressor from starting up).
See microprocessor control manual for further details, also in relation to particular customer specifications.
Fig. 1 Basic cooling circuits
THS025-035
Pos. Description
1 Compressor
2 Condenser
3 Thermostatic valve
4 Evaporator
5
Filter dryer
6 Sight glass
@DNOVA THS_R410A-IOM-1304-E
- High / Low pressure;
- Dirty filters alarm;
- Air flow alarm.
Pos. Description
7 Low pressure switch (LP)
8 High pressure switch (HP)
9 Condensing pressure probe
10 Tap
11
Solenoid valve
12 Check valve
3