Samsung Electronics
234
Piping Diagram
Safety Start – Normal Start
▪
Purpose
Stable start-up in a low-temperature section with overload
▪
Concept
Compressors start in sequential order to ensure stable operation if the indoor unit operation ratio is low or there is an overload.
▪
Control specifications in detail
-
Condition(s) required to enter Normal Start mode : None of the conditions required to enter Quick Start mode are satisfied.
- In Normal Start mode, compressors are controlled as shown below.
(See the chart below for conditions required to complete specific steps)
- Condition(s) required to enter Normal Operation mode : [ A or B ]
A. DSH > 10 K
B. Max (Tdis, Ttop) ≥ 30
℃
- Cold Operation mode will activate if none of the conditions required to enter Normal Operation mode are satisfied.
- In Cold Operation mode, the compressor frequency increase speed is restricted to 1Hz per 30 sec.
- Condition(s) required to close Cold Operation mode: [ A or B ]
A. A maximum of 30 min has elapsed
B. DSH > 15 K
7-3 Functions (cont.)
7-3-2-2 Start-up modes (cont.)
7-3-2 Control (cont.)