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Table 5 — 38AUZ 07-08 Piping Recommendations (Single-Circuit Unit)
R-410A
Ft
m
Model
Typ Linear ft
38AUZ*07
Liquid Line
Max Lift
Suction Line
Charge (lbs)
38AUZ*08
Liquid Line
Max Lift
Suction Line
Charge (lbs)
Legend:
Length Equiv
Equivalent tubing length, including effects of refrigeration specialties devices
Liquid Line
Tubing size, inches OD.
Max Lift
Maximum liquid lift at maximum permitted liquid line pressure drop
Cooling
• Indoor unit ABOVE outdoor unit
• Indoor unit BELOW outdoor unit
Heating
Suction Line
Tube size, inches OD
Charge
Charge Quantity, lbs. Calculated for both liquid line sizes (where applicable), but only with larger suction line size (where
applicable)
NOTE:
For applications with linear length greater than 100 ft (30.5 m), contact your local Carrier representative.
Table 6 — 38AUD 12-14 Piping Recommendations (Two-Circuit Unit)
NOTE: 38AUD requires TWO sets of refrigeration piping
R-410A
Ft
m
Model
Typ Linear ft
38AUD*12
Liquid Line
Max Lift
Suction Line
Charge ea. (lbs) 7.1
38AUD*14
Liquid Line
Max Lift
Suction Line
Charge ea. (lbs) 9.7
Legend:
Length Equiv
Equivalent tubing length, including effects of refrigeration specialties devices
Liquid Line
Tubing size, inches OD.
Max Lift
Maximum liquid lift at maximum permitted liquid line pressure drop
Cooling
• Indoor unit ABOVE outdoor unit
• Indoor unit BELOW outdoor unit
Heating
Suction Line
Tube size, inches OD
Charge
Charge Quantity, lbs. Calculated for both liquid line sizes (where applicable), but only with larger suction line size (where
applicable)
NOTE:
For applications with linear length greater than 100 ft (30.5 m), contact your local Carrier representative.
Equivalent Length
0-38
38-75
0-12
12-23
0-25
25-50
3
/
3
/
1
/
8
8
2
25
42
50
7
1
7
1
/
1-
/
/
1-
/
8
8
8
8
8.4
9.6
11.1
1
1
/
/
2
2
25
50
7
1
1
/
1-
/
1-
/
8
8
8
11.8
9.6
Equivalent Length
0-38
38-75
0-12
12-23
0-25
25-50
3
3
/
/
8
8
25
50
7
7
/
/
8
8
8.1
3
3
/
/
8
8
25
50
7
7
/
/
8
8
10.7
Table 7 — 38AU Maximum Suction Pipe Size
Model:
Unit Size
38AUZ
07
08
38AUD
12
14
11
75-113
113-150
23-34
34-46
50-75
75-100
1
/
1
/
5
/
2
2
8
75
90
100
1
1
1-
/
1-
/
8
8
13.1
15.0
18.8
1
1
/
/
2
2
75
100
1
1
1-
/
1-
/
8
8
12.9
16.8
75-113
113-150
23-34
34-46
50-75
75-100
3
1
1
/
/
/
8
2
2
28
75
100
1
1
1
/
1
/
8
8
9.6
11.9
13.8
3
1
1
/
/
/
8
2
2
48
75
100
1
1
1
/
1
/
8
8
12.2
14.5
16.4
Maximum Tube Size
3
1
/
8
5
1
/
8
3
1
/
8
5
1
/
8
150-188
46-57
100-125
1
/
5
/
2
8
86
101
1
1-
/
8
16.9
22.6
1
/
2
112
1
1-
/
8
18.7
150-188
46-57
100-125
1
/
2
99
1
1
/
8
15.8
1
/
2
122
1
1
/
8
18.4
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