Carrier 38APS025-050 Air Conditioner User Manual


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18
Table 7 — Refrigerant Piping Requirements
38APS025-050 Single-Circuit Units (60 Hz)
38APD025-100 Dual-Circuit Units (60 Hz)
LEGEND
NOTES:
1. Shading indicates double suction riser required on units if con-
densing unit is located higher than evaporator.
2. Pipe sizes are based on an equivalent length equal to the max-
imum length of interconnecting piping, shown for each column,
plus 50% for fittings. Example: Equivalent length = Maximum
linear length x 1.5.
3. Suction and liquid line sizing is based on pressure drop equiva-
lent to 2 F (1.1 C) at nominal rating conditions.
4. All pipe sizes are OD inches. Equivalent sizes in millimeters
follow:
38APS
UNIT
SIZE
TOTAL LINEAR LENGTH OF INTERCONNECTING PIPE, ft (m)
0-25 25-50 50-75 75-100 100-125 125-150 150-175 175-200
(0-7.6) (7.6-15.2) (15.2-22.9) (22.9-30.5) (30.5-38.1) (38.1-45.7) (45.7-53.3) (53.3-61.0)
LSLSLSLSLSLSLSLS
025
5
/
8
1
3
/
8
5
/
8
1
5
/
8
7
/
8
1
5
/
8
7
/
8
1
5
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
027
5
/
8
1
3
/
8
5
/
8
1
5
/
8
7
/
8
1
5
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
030
5
/
8
1
3
/
8
7
/
8
1
5
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
1
1
/
8
2
1
/
8
040
5
/
8
1
5
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
1
1
/
8
2
1
/
8
1
1
/
8
2
5
/
8
1
1
/
8
2
5
/
8
050
7
/
8
1
5
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
1
1
/
8
2
1
/
8
1
1
/
8
2
5
/
8
1
1
/
8
2
5
/
8
1
1
/
8
2
5
/
8
1
1
/
8
2
5
/
8
38APD UNIT
SIZE
TOTAL LINEAR LENGTH OF INTERCONNECTING PIPE, ft (m)
0-25 25-50 50-75 75-100 100-125 125-150 150-175 175-200
(0-7.6) (7.6-15.2) (15.2-22.9) (22.9-30.5) (30.5-38.1) (38.1-45.7) (45.7-53.3) (53.3-61.0)
LSLSLSLSLSLSLSLS
025
Ckt A
1
/
2
1
1
/
8
1
/
2
1
1
/
8
5
/
8
1
3
/
8
5
/
8
1
3
/
8
5
/
8
1
3
/
8
5
/
8
1
3
/
8
5
/
8
1
3
/
8
5
/
8
1
5
/
8
Ckt B
1
/
2
1
1
/
8
1
/
2
1
1
/
8
5
/
8
1
3
/
8
5
/
8
1
3
/
8
5
/
8
1
3
/
8
5
/
8
1
3
/
8
5
/
8
1
3
/
8
5
/
8
1
5
/
8
027
Ckt A
1
/
2
1
1
/
8
1
/
2
1
1
/
8
5
/
8
1
3
/
8
5
/
8
1
3
/
8
5
/
8
1
3
/
8
5
/
8
1
3
/
8
5
/
8
1
5
/
8
5
/
8
1
5
/
8
Ckt B
1
/
2
1
1
/
8
1
/
2
1
1
/
8
5
/
8
1
3
/
8
5
/
8
1
3
/
8
5
/
8
1
3
/
8
5
/
8
1
3
/
8
5
/
8
1
5
/
8
5
/
8
1
5
/
8
030
Ckt A
1
/
2
1
1
/
8
5
/
8
1
3
/
8
5
/
8
1
3
/
8
5
/
8
1
3
/
8
5
/
8
1
5
/
8
5
/
8
1
5
/
8
7
/
8
1
5
/
8
7
/
8
1
5
/
8
Ckt B
1
/
2
1
1
/
8
5
/
8
1
3
/
8
5
/
8
1
3
/
8
5
/
8
1
3
/
8
5
/
8
1
5
/
8
5
/
8
1
5
/
8
7
/
8
1
5
/
8
7
/
8
1
5
/
8
040
Ckt A
5
/
8
1
3
/
8
5
/
8
1
3
/
8
5
/
8
1
5
/
8
7
/
8
1
5
/
8
7
/
8
1
5
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
Ckt B
1
/
2
1
1
/
8
5
/
8
1
3
/
8
5
/
8
1
5
/
8
5
/
8
1
5
/
8
7
/
8
1
5
/
8
7
/
8
1
5
/
8
7
/
8
1
5
/
8
7
/
8
2
1
/
8
050
Ckt A
5
/
8
1
3
/
8
5
/
8
1
5
/
8
7
/
8
1
5
/
8
7
/
8
1
5
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
Ckt B
5
/
8
1
3
/
8
5
/
8
1
5
/
8
7
/
8
1
5
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
060
Ckt A
5
/
8
1
3
/
8
5
/
8
1
5
/
8
7
/
8
1
5
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
Ckt B
5
/
8
1
3
/
8
7
/
8
1
5
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
1
1
/
8
2
1
/
8
1
1
/
8
2
1
/
8
070
Ckt A
5
/
8
1
5
/
8
7
/
8
1
5
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
1
1
/
8
2
1
/
8
1
1
/
8
2
1
/
8
Ckt B
5
/
8
1
5
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
1
1
/
8
2
1
/
8
1
1
/
8
2
5
/
8
080
Ckt A
5
/
8
1
3
/
8
7
/
8
1
5
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
1
1
/
8
2
1
/
8
1
1
/
8
2
1
/
8
Ckt B
7
/
8
1
5
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
1
1
/
8
2
5
/
8
1
1
/
8
2
5
/
8
1
1
/
8
2
5
/
8
1
1
/
8
2
5
/
8
090
Ckt A
5
/
8
1
5
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
1
1
/
8
2
1
/
8
1
1
/
8
2
5
/
8
1
1
/
8
2
5
/
8
Ckt B
7
/
8
1
5
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
1
1
/
8
2
1
/
8
1
1
/
8
2
5
/
8
1
1
/
8
2
5
/
8
1
1
/
8
2
5
/
8
1
1
/
8
2
5
/
8
100
Ckt A
7
/
8
1
5
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
1
1
/
8
2
1
/
8
1
1
/
8
2
5
/
8
1
1
/
8
2
5
/
8
1
1
/
8
2
5
/
8
1
1
/
8
2
5
/
8
Ckt B
7
/
8
1
5
/
8
7
/
8
2
1
/
8
7
/
8
2
1
/
8
1
1
/
8
2
1
/
8
1
1
/
8
2
5
/
8
1
1
/
8
2
5
/
8
1
1
/
8
2
5
/
8
1
1
/
8
2
5
/
8
L—Liquid Line
S—Suction Line
in. mm
1
/
2
12.7
5
/
8
15.9
7
/
8
22.2
1
1
/
8
28.6
1
3
/
8
34.9
1
5
/
8
41.3
2
1
/
8
54.0
2
5
/
8
66.7
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