Refrigerant Piping Connections; Refrigerant Piping System Limitations - LG LS091HSV3 Installation Manual

REFRIGERANT PIPING CONNECTIONS

Refrigerant Piping System Limitations

Connection Limitations
Single zone systems consist of one outdoor unit and one indoor unit. One of the most critical elements of a single zone system is the refrig-
erant piping. Tables 25 to 28 list pipe length limits that must be followed in the design of a Single Zone Wall Mount refrigerant pipe system.
Refer to Figure 40 for maximum length and elevation of piping.
Table 25: Single Zone High Ef ciency Refrigerant Piping System Limitations
Pipe Length
(ELF = Equivalent Length of
pipe in Feet)
Elevation
(All Elevation Limitations are
Measured in Actual Feet)
Additional Refrigerant Needed (oz/ft)
Table 26: Single Zone Standard Refrigerant Piping System Limitations
Pipe Length
(ELF = Equivalent Length of
pipe in Feet)
Elevation
(All Elevation Limitations are
Measured in Actual Feet)
Additional Refrigerant Needed (oz/ft)
36
Longest total equivalent piping length
Shortest total equivalent piping length
Distance between fittings and indoor units
or outdoor units
If outdoor unit is above indoor unit
If outdoor unit is below indoor unit
Longest total equivalent piping length
Shortest total equivalent piping length
Distance between fittings and indoor units
or outdoor units
If outdoor unit is above indoor unit
If outdoor unit is below indoor unit
Figure 40: Single Zone System Layout
Max Length = A
Indoor unit
Max Elevation = B
A
B
Outdoor unit
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LS091HSV3 LS121HSV3 LS181HSV3 LS240HSV3
65.6 65.6
6.6 6.6
20 inches 20 inches
32.8 32.8
32.8 32.8
0.22 0.22
LS307HV3
98.4
9.8
20 inches
49.2
49.2
0.38
Unit = Feet
Outdoor unit
A
B
Indoor unit
98.4 98.4
9.8 9.8
20 inches 20 inches
49.2 49.2
49.2 49.2
0.38 0.38
LS360HV3
98.4
9.8
20 inches
49.2
49.2
0.38