12  - COMPONENTS MANAGEMENT
12.1. Compressors
Compressor timing
 Delay of the start-up of the outdoor fan with regard to the 
indoor fan (t
0
=30s)
 Delay of the start-up of the compressor with regard to the 
outdoor fan (t
1
=10s)
           
t
0 
+
 
t
1
 Minimum operation time (t
2
=120s)
        
      
     
 Minimum shut-down time (t
3
=180s)
 Time between start-ups of the same compressor (t
4
=300s)
        
 Time between start-ups of several compressors (t
5
=60s)
Rotation of the compressors
compressor 2
compressor 1
outdoor fan
t
1
t
3
t
2
t
4
t
5
indoor fan
t
0
Important: 
  
12.2. Four-way valve
12.3. Electronic expansion valve
Condensation and evaporation control
        
  
12.4. Outdoor circuit fans   
Types of fans
2-speed axial.
Electronic         
Operating mode