Samsung Electronics 232
Piping Diagram
Safety Start – Cold Start
▪ Purpose
Protect the system and compressors by preventing poor lubrication due to liquid compression or oil foaming.
▪ Concept
-
- After the Cold Start process, Cold Operation mode is on for a maximum of 60 minutes to decrease the compressor frequency
increase speed until DSH is secured. This prevents liquid compression.
▪ Control specifications in detail
- Condition(s) required to enter Cold Start mode : [ (A or B) & C & D ]
A. Max (Ttop, Tdis) – Tair < 15 K
B. Max (Ttop, Tdis) < 30℃
D. Cooling : Ambient temp < 30℃ , Heating : Ambient temp < 20℃
Condition(s) required to close Cold Operation mode: [ A or B ]
A. A maximum of 60 min has elapsed
B. DSH > 15 K
If one compressor is ON
7-3 Functions (cont.)
7-3-2-2 Start-up modes (cont.)
7-3-2 Control (cont.)
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