Samsung AM072BXV Series Service Manual page 230

Piping Diagram
7-3 Functions (cont.)
7-3-2 Control (cont.)
7-3-2-1 Actuator (cont.)
Compressor – Module capacity control
▪ Purpose
Improve efficiency through appropriate capacity distribution among units.
Maximize the lifespan through equalization of the duration of operation among outdoor units.
▪ Concept
The duration of operation is equally distributed among outdoor units through rotational operation of the outdoor units.
The duration of operation is equally distributed among the compressors on indoor units through rotational operation of the compres-
sors.
The operation efficiency is optimized by setting the operation capacity for each outdoor unit according to the outdoor unit capacity ratio.
▪ Control specifications in detail
It shall be operated according to priority to prevent operational time from being concentrated on any of outdoor units during the opera-
tion of Hysteresis. Operating outdoor unit can be circulated in case only some outdoor units are operated under partial load in case of
operation by priority. Driving priority can be changed in case that defrosting operation, oil recovery and entire outdoor units are off.
■ Master unit priority
- At initial starting from power supply : ODU address setting.
■ Maser unit rotation
1. After defrost / Oil recovery / All unit off (Master unit operates more than 60 minutes)
2. A unit is stopped over 40 minutes
Samsung Electronics
Master
Sub2
Sub1
Sub1
Master
Sub2
Sub2
Sub1
Master
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