Large Capacity Start Up Control (Heating) - Daikin VRV III RXYQ5-54PY1 Service Manual

Special Control
3.2

Large capacity start up control (Heating)

For startup, oil return operation, or setup after defrosting, start up multiple compressors at a high speed according to the
conditions of indoor units with thermostat ON, thus maximizing the equipment capacity.
25
20
15
Pressure
10
5
0
110
Time
Start up STD compressors at intervals of 15 seconds.
INV
STD
Pc
9
8
Number of
7
compressors
6
5
Pe
4
3
Si34-601A
Function