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Carrier Gemini 38AU Series Installation, Start-Up And Service Instructions Manual page 8

Air-cooled condensing units with puron (r-410a) refrigerant
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MODEL AND
LINEAR LINE (FT)
NOMINAL
EQUIV. LINE (FT)
CAPACITY
Liquid Line Size (in.)
Liquid PD (F)
Max Lift (ft)
Max Lift PD (F)
38AUZ*07
Suction Line Size (in.)
Suction Line PD (F)
Charge (lb)
#/TR
Liquid Line Size (in.)
Liquid PD (F)
Max Lift (ft)
Max Lift PD (F)
38AUZA/B08
Suction Line Size (in.)
Suction Line PD (F)
Charge (lb)
#/TR
Liquid Line Size (in.)
Liquid PD (F)
Max Lift (ft)
Max Lift PD (F)
38AUZD/E08
Suction Line Size (in.)
Suction Line PD (F)
Charge (lb)
#/TR
Liquid Line Size (in.)
Liquid PD (F)
Max Lift (ft)
Max Lift PD (F)
38AUZ*12
Suction Line Size (in.)
Suction Line PD (F)
Charge (lb)
#/TR
Liquid Line Size (in.)
Liquid PD (F)
Max Lift (ft)
Max Lift PD (F)
38AUZ*14
Suction Line Size (in.)
Suction Line PD (F)
(Cap Red)
Charge (lb)
#/TR
LEGEND
#/TR
— Charge to unit capacity ratio, lbs per ton (at 45°F SST, 95°F ODA)
Cap Red
— Capacity reduction caused by suction line pressure drop > 2°F
Liquid PD (F)
— Liquid line pressure drop, saturated temperature, degrees F
Max Lift
— Maximum liquid lift (Indoor unit ABOVE outdoor unit only), at maximum permitted pressure drop.
Max Lift PD (F)
— Pressure drop including Maximum liquid lift value
ODA
— Outdoor Air
SC
— Sub-cooling, degrees F (at liquid line valve)
SST
— Saturated Suction Temperature
Suction Line PD (F) — Suction Line Pressure Drop, saturated temperature, degrees F
TC
— Total Capacity, MBH (at 45°F Saturated suction, 95°F outdoor air temperature)
Table 8 — 38AUZ Piping Recommendations (Single-Circuit)
0 - 24
25 - 49
0 - 37
38 - 74
3
/
"
3
/
"
1
/
"
1
8
8
2
2.0
4.0
0.7
1.1
18
7
34
3.5
4.6
3.5
3.5
7
/
"
7
/
"
1
1
/
"
7
8
8
8
0.9
1.8
0.5
2.7
10.8
11.8
13.7
15.2
1.90
2.07
2.41
2.67
1
/
"
1
/
"
5
/
"
1
2
2
8
0.6
1.3
0.3
1.9
25
50
50
2.7
5.4
4.5
8.1
7
/
"
7
/
"
1
1
/
"
7
8
8
8
1.5
3.1
0.8
4.6
13.6
15.4
16.1
17.2
1.78
2.02
2.11
2.25
1
/
"
1
/
"
5
/
"
1
2
2
8
0.6
1.3
0.3
1.9
25
50
50
2.7
5.4
4.5
8.1
7
/
"
7
/
"
1
1
/
"
7
8
8
8
1.5
3.1
0.8
4.6
15.6
19.0
19.7
20.8
2.08
2.53
2.63
2.77
1
/
"
1
/
"
5
/
"
1
2
2
8
0.9
1.9
0.5
2.8
25
40
50
2.9
5.0
4.5
5.0
7
/
"
1
1
/
"
1
1
/
"
1
8
8
8
2.4
1.2
1.2
1.8
15.7
17.8
19.7
19.8
1.67
1.89
2.09
2.10
/
"
/
"
/
"
5
5
3
5
8
8
4
0.4
0.8
0.4
1.2
23
16
23
1.8
1.84
1.84
1.8
1
1
/
"
1
1
/
"
1
3
/
"
1
8
8
8
3.3
1.1
2.2
0.8
(-2.3%)
31.8
34.7
37.6
37.6
2.62
2.86
3.09
3.09
50 - 74
75 - 99
100 - 124
75 - 112
113 - 149
150 - 187
/
"
5
/
"
1
/
"
5
/
"
1
/
"
2
8
2
8
2
0.3
1.4
0.4
1.8
31
39
44
57
41
3.5
5.0
5.0
5.0
/
"
1
1
/
"
7
/
"
1
1
/
"
7
/
"
8
8
8
8
8
0.8
3.6
1.0
4.5
18.5
16.9
21.3
18.7
3.25
2.97
3.74
3.28
/
"
5
/
"
1
/
"
5
/
"
1
/
"
2
8
2
8
2
0.5
2.5
0.7
3.2
75
75
100
100
97
6.7
10.8
9.0
11.2
/
"
1
1
/
"
1
1
/
"
1
1
/
8
8
8
8
1.2
1.6
2.1
20.5
19.5
23.3
21.5
2.68
2.55
3.05
2.81
/
"
5
/
"
1
/
"
5
/
"
1
/
"
2
8
2
8
2
0.5
2.5
0.7
3.2
75
75
100
100
97
6.7
10.8
9.0
11.2
/
"
1
1
/
"
1
1
/
"
1
1
/
8
8
8
8
1.2
1.6
2.1
24.1
23.1
26.9
25.1
3.21
3.08
3.59
3.35
/
"
5
/
"
1
/
"
5
/
"
1
/
"
2
8
2
8
2
0.8
3.8
1.0
4.7
28
54
34
68
22
5.0
6.5
6.4
6.5
1
/
"
1
3
/
"
1
1
/
"
1
3
/
"
1
1
/
8
8
8
8
8
0.6
2.4
0.9
3.1
23.1
21.6
26.1
23.6
2.45
2.29
2.77
2.50
/
"
/
"
/
"
/
"
/
"
3
5
3
5
8
4
8
4
8
0.6
1.6
0.8
2.0
10
18
28
38
21
1.8
3.3
3.3
3.3
1
/
"
1
3
/
"
1
3
/
"
1
3
/
8
8
8
8
1.2
1.6
2.0
41.8
41.1
46.1
44.2
3.44
3.38
3.79
3.64
8
125 - 149
150 - 174
188 - 224
225 - 262
5
/
"
1
/
"
5
/
"
1
/
"
8
2
8
2
0.5
2.1
0.6
2.5
57
35
54
31
5.0
4.9
5.0
5.0
1
1
/
"
1
1
/
"
1
1
8
8
1.3
1.6
1.8
24.2
21.4
27.1
23.4
4.25
3.8
4.75
4.1
5
/
"
1
/
"
5
/
"
1
/
"
8
2
8
2
0.9
3.8
1.0
4.4
97
90
90
82
8.9
11.2
8.5
11.2
"
1
3
/
"
1
1
/
"
1
3
/
"
1
1
/
"
8
8
8
8
0.7
2.5
0.8
2.9
27.1
23.4
30.2
25.4
3.54
3.06
3.95
3.32
5
/
"
1
/
"
5
/
"
1
/
"
8
2
8
2
0.9
3.8
1.0
4.4
97
90
90
82
8.9
11.2
8.5
11.2
"
1
3
/
"
1
1
/
"
1
3
/
"
1
1
/
"
8
8
8
8
0.7
2.5
0.8
2.9
30.7
26.0
32.8
27.0
4.09
3.47
4.37
3.60
5
/
"
1
/
"
5
/
"
5
/
8
2
8
1.3
5.7
1.6
1.8
65
11
63
59
6.4
6.5
6.5
6.4
"
1
3
/
"
1
1
/
"
1
3
/
"
1
1
/
"
8
8
8
8
1.1
3.7
1.3
4.3
29.2
25.5
32.3
34.1
3.10
2.71
3.43
3.62
/
"
/
"
/
"
/
"
3
5
3
5
4
8
4
8
1.1
2.4
1.1
2.8
36
14
35
9
3.3
3.3
3.3
3.3
"
1
5
/
"
1
3
/
"
1
5
/
"
1
3
/
"
8
8
8
8
2.4
2.8
0.8
1.0
(-0.7%)
(-1.4%)
51.6
47.3
56.1
50.3
4.24
3.89
4.61
4.14
175 - 200
263 - 300
5
/
"
1
/
"
5
/
"
8
2
8
0.7
2.8
0.8
53
27
52
5.0
5.0
5.0
/
"
1
1
/
"
8
8
2.1
30.0
25.3
32.8
5.26
4.4
5.75
5
/
"
1
/
"
5
/
"
8
2
8
1.2
5.1
1.4
121
74
119
11.2
11.2
11.2
1
3
/
"
1
1
/
"
1
3
/
"
8
8
8
1.0
3.3
1.1
33.2
27.3
36.3
4.34
3.57
4.75
5
/
"
1
/
"
5
/
"
8
2
8
1.2
5.1
1.4
121
74
119
11.2
11.2
11.2
1
3
/
"
1
1
/
"
1
3
/
"
8
8
8
1.0
3.3
1.1
34.8
27.9
37.1
4.64
3.73
4.95
"
5
/
"
8
8
2.1
55
6.4
1
3
/
"
1
1
/
"
1
3
/
"
8
8
8
1.5
4.9
1.7
35.3
36.9
38.4
3.75
3.92
4.08
/
"
/
"
/
"
3
3
7
4
4
8
1.5
1.7
0.6
30
25
43
3.3
3.3
3.3
1
5
/
"
1
3
/
"
1
5
/
"
8
8
8
3.2
1.2
1.3
(-2.1%)
60.6
63.4
76.9
4.98
5.21
6.32
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