b. Inspect for oil at all refrigerant tubing connections and on
unit base. Detecting oil generally indicates a refrigerant
leak. Leak-test all refrigerant tubing connections using
electronic leak detector, or liquid-soap solution. If a refrig-
erant leak is detected, see following Check for Refrigerant
Leaks section.
c. Inspect all field- and factory-wiring connections. Be sure
that connections are completed and tight. Ensure wires do
not contact refrigerant tubing or sheet metal edges.
d. Inspect coil fins. If damaged during shipping and handling,
carefully straighten fins with a fin comb.
3. Verify the following conditions:
a. Make sure that outdoor-fan blade is correctly positioned in
fan orifice. Top edge of blade should be 3.125 in. down
from outdoor coil outlet grille (size 024–048, See Fig. 12)
or hub should be 0.708-in. away from motor end bell (size
060, See Fig. 13). See Outdoor Fan Adjustment section.
b. Make sure that air filter is in place.
c. Make sure that condensate drain trap is filled with water to
ensure proper drainage.
d. Make sure that all tools and miscellaneous loose parts have
been removed.
Table 4—Required Subcooling
REQUIRED SUBCOOLING °F (°C)
Model Size
Outdoor Ambient Temperature
75 (24)
82 (28)
85 (29)
95 (35)
105 (41)
048
17.5 (9.7)
17 (9.4)
16.5 (9.2)
16 8.9)
14 (7.8)
060
21 (11.7)
20.5 (11.4)
20 (11.1)
19 (10.6)
16 (8.9)
Table 5—Required Liquid Line Temperature
REQUIRED LIQUID LINE TEMPERATURE FOR A SPECIFIC SUBCOOLING (R-22)
Pressure (psig)
Required Subcooling (°F)
Pressure (kPa)
Required Subcooling (°C)
5
10
15
20
3
6
8
11
134
71
66
61
56
924
24
22
19
16
141
74
69
64
59
972
26
23
21
18
156
80
75
70
65
1075
30
27
24
21
163
83
78
73
68
1124
31
28
26
23
170
86
81
76
71
1172
33
30
27
24
177
89
84
79
74
1220
34
31
29
26
184
91
86
81
76
1268
36
33
30
27
191
94
89
84
79
1317
37
34
31
29
198
96
91
86
81
1365
38
36
33
30
205
98
93
88
83
1413
40
37
34
31
213
101
96
91
86
1468
41
38
36
33
221
104
99
94
89
1524
43
40
37
34
229
106
101
96
91
1579
44
41
38
36
237
108
103
98
93
1634
45
42
40
37
245
111
106
101
96
1689
47
44
41
38
253
113
108
103
98
1744
48
45
42
40
262
116
111
106
101
1806
49
46
44
41
271
118
113
108
103
1868
51
48
45
42
280
121
116
111
106
1930
52
49
46
44
289
123
118
113
108
1992
53
51
48
45
298
125
120
115
110
2054
55
52
49
46
307
128
123
118
113
2116
56
53
50
48
317
130
125
120
115
2185
57
54
52
49
327
132
127
122
117
2254
59
56
53
50
337
135
130
125
120
2323
60
57
54
52
347
137
132
127
122
2392
61
58
56
53
357
139
134
129
124
2461
62
60
57
54
367
142
137
132
127
2530
64
61
58
55
280
121
116
111
106
1930
52
49
46
44
289
123
118
113
108
1992
53
51
48
45
298
125
120
115
110
2054
55
52
49
46
307
128
123
118
113
2116
56
53
50
48
317
130
125
120
115
2185
57
54
52
49
327
132
127
122
117
2254
59
56
53
50
337
135
130
125
120
2323
60
57
54
52
347
137
132
127
122
2392
61
58
56
53
357
139
134
129
124
2461
62
60
57
54
367
142
137
132
127
2530
64
61
58
55
7
