Samsung AM200FXWANR - Page 215

Samsung Electronics 214
Piping Diagram
Safety Start – Normal Start
ƒ Purpose
Stable start-up in a low-temperature section with overload
ƒ Concept
Compressors start in sequential order to ensure stable operation if the indoor u
nit operation ratio is low or there is an overload.
ƒ Control specifications in detail
- Condition(s) required to enter Normal Start mode : None of the conditions required to enter Qu
ick Start mode are satisfied.
- In Normal Start mode, compressors are controlled as shown below.
(See the chart below for conditions required to co
mplete specific steps)
- Condition(s) required to enter Normal Operation mode : [ A or B ]
A. DSH > 10 K B. Max (Tdis, Ttop) ≥ 30ఁ
- Cold Operation mode will activat
e 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.)