Allied 4DHV Mini-Split Series - Single-Zone Piping Limitations

508067-01Issue 2016Page 12 of 75
Do not allow for excess length of line sets to be left rolled up as part of therequired distance, or in general. This
will also cause additional performance issues.
WARNING
OUTDOOR UNIT
OUTDOOR UNIT
INDOOR UNIT
INDOOR UNIT
Maximum Line Set
Length
Maximum Line Set
Length
Maximum
Elevation -
Outdooor
Unit BELOW
Indoor Unit
Maximum
Elevation -
Outdooor
Unit ABOVE
Indoor Unit
Minimum Line Set
Length - 10 ft. (3m)
Minimum Line Set
Length - 10 ft. (3m)
Outside Unit BELOW Indoor Unit Outside Unit ABOVE Indoor Unit
Figure 5. Single-Zone Piping Limitations
Each system size has a line set length and vertical elevation parameters.
System
Size
(KBtu)
Line Set Diameters (in.) Maximum Elevation
Outdoor Unit
BELOW Indoor Unit
- Feet (Meters)
Maximum Elevation
Outdoor Unit
ABOVE Indoor Unit
- Feet (Meters)
Maximum Line
Set Length -
Feet (Meters)
Additional Refrigerant for
greater than 25 Foot Line
Set Length
Liquid Gas
09 1/4 3/8 82 (25) 33 (10) 82 (25)
For the additional charging,
we recommend 0.161
oz. for 1/4” liquid line and
0.322 oz. for 3/8” liquid line
per foot.
12 1/4 1/2 82 (25) 33 (10) 82 (25)
18 1/4 1/2 98 (30) 66 (20) 98 (30)
24 3/8 5/8 98 (30) 66 (20) 98 (30)
36 3/8 5/8 98 (30) 98 (30) 213 (65)
Table 1. Line Set Guide