8.1. COOLING operating mode (summer)
SUMMER
SUMMER
C1-1
C1-1
C2-1
C1-2 C2-1 C2-2
Zm/2
Zm/2
Band
Band
Tc
Tc
Tr
Tr
• 4 compressors (2 circuit)
• 2 compressors (1 circuit)
3WV
100%
0%
Dif_3WV
Off_3WV
3WV
100%
0%
Dif_3WV
Off_3WV
Tr: Control temperature
Tc: Cooling setpoint temp.
Zm: Dead zone
Banda: Control band
Illustrative example:
• Units 2 compressors:
• Units 4 compressors:
8.2. HEATING operating mode (winter)
Tr: Control temperature
Tc: Heating setpoint temp
Zm: Dead zone
Band: Control band
WINTER
WINTER
C2-2
C2-1
C2-1
C1-1
V3V
C1-2 C1-1
Zm/2
Zm/2
Band
Band
Tc
Tc
Tr
Tr
• 4 compressors (2 circuits) + hot water coil
• 2 compressors (1 circuit) + electrical heaters
100%
0%
Dif_V3V
Off_V3V
Off_R
R1R2
Dif_R
Forced disconnection of stages
8 - SELECTION OF THE OPERATING MODE
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