Piping Diagram
Samsung Electronics 253
Long-piping condition setting
ƒ Purpose
Secure performance and reliability when the units are used with long piping.
ƒ Concept
- Control of the compressor frequency, EEV, and valves is optimized to
facilitate the circulation of refrigerant in
a long piping condition.
ƒ Control specifications in detail
- In heating mode, the initial EEV opening degree increases.
The compressor freque
ncy increase speed decreases if the low pressure is low.
(see "Main EEV control" for details on EEV control).
- In cooling mode, the initial value for tar
get low pressure decreases to 0.7kgf/cm2,g.
(see “Compressor capacity control” for details).
- In cooling mode, EVI bypass mode turns on (see "EVI EEV control" f
or details).
ƒ Notes
- Incorrect settings may seriously damage the system.
- Setting is unnecessary if high-head condition is set.
Input unit Seg1 Seg2 Seg3 Seg4Long-piping condition setting
Main 0 9
0 0 Disabled (default)
0 1
Level 1
(When equivalent length of farthest indoor unit
from the outdoor unit is between 1
00~170m)
0 2
Level 2
(When equivalent length of farthest indoor unit
from the outdoor unit is over 170m)
7-3 Functions (cont.)
7-3-3-1 Field Setting (cont.)
7-3-3 Others (cont.)
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