b. Inspect for oil at all refrigerant tubing connections and
on unit base. Detecting oil generally indicates a refrig-
erant leak. Leak test all refrigerant tubing connections
using electronic leak detector, halide torch, or liquid-
soap solution. If a refrigerant leak is detected, see Check
for Refrigerant Leaks section.
Fig. 22—Wiring Splice Boxes
C95022
UNIT LINE WIRE
SPLICE BOX
UNIT POWER
LEAD
WIRE-BINDING
SCREW
CONTROL POWER
SPLICE BOX
TABLE 3—ELECTRICAL DATA—657A
UNIT
657A
SIZE
(–SERIES,
IF
USED)
V-PH
(60 HZ)
VOLTAGE
RANGE
COMPRESSOR OFM IFM
ELECTRIC
HEAT
SINGLE-POINT
POWER SUPPLY
DUAL-POINT
POWER SUPPLY
(INCLUDING UNIT ONLY)
Min Max
RLA
LRA
FLA FLA
kW
FLA
Single-
Point
Wiring
MCA
Single-
Point
Max
Fuse
or
Ckt
Bkr
Single-
Point
MOCP
Heater
Only
Dual-
Point
Wiring
MCA
Heater
Only
Dual-
Point
Max
Fuse
or
Ckt
Bkr
Heater
Only
Dual-
Point
MOCP
Unit
Only
Dual-
Point
MCA
Unit
Only
Dual-
Point
Max
Fuse
or
Ckt
Bkr
Unit
Only
Dual-
Point
MOCP
024–311
208/230-1 187
253
11.2
56.0
1.4
2.0
3.75/5.00
5.60/7.50
7.50/10.0
18.1/20.8
27.1/31.3
36.1/41.7
40.3/43.4
51.0/56.5
62.5/69.5
45/45
60/60
—
—
—
70/80
22.5/26.0
33.7/39.1
45.1/50.8
25/30
35/40
50/60
—
—
—
17.4 25/25
—
024–321
208/230-1 187
253
12.1
54.0
1.4
2.0
3.75/5.00
5.60/7.50
7.50/10.0
18.1/20.8
27.1/31.3
36.1/41.7
41.4/44.5
52.2/57.7
63.7/70.7
45/45
60/60
—
—
—
70/80
22.5/26.0
33.7/39.1
45.1/50.8
25/30
35/40
50/60
—
—
—
18.5 25/25
—
030
208/230-1 187
253
15.0
73.0
1.4
2.6
3.75/5.00
5.60/7.50
7.50/10.0
11.30/15.0
18.1/20.8
27.1/31.3
36.1/41.7
54.1/62.0
45.3/48.8
56.6/61.8
67.9/74.8
90.4/100.3
50/50
60/–
—
—
—
–/70
70/80
100/100
22.5/26.0
33.7/39.1
45.1/50.1
67.9/78.1
25/30
35/40
50/60
—
—
—
—
70/80
22.8 30/30
—
036
208/230-1 187
253
16.0
88.0
1.2
2.6
3.75/5.00
5.60/7.50
7.50/10.0
11.30/15.0
18.1/20.8
27.1/31.3
36.1/41.7
54.1/62.0
48.3/51.7
56.6/61.8
67.9/74.8
90.4/100.3
60/60
60/–
—
—
—
–/70
80/80
100/110
22.5/26.0
33.7/39.1
45.1/50.1
67.9/78.1
25/30
35/40
50/60
—
—
—
—
70/80
23.8 35/35
—
042
208/230-1 187
253
20.0
104.0
1.4
3.1
3.75/5.00
5.60/7.50
7.50/10.0
11.30/15.0
15.0/20.0
18.1/20.8
27.1/31.3
36.1/41.7
54.1/62.0
72.2/83.3
52.1/55.5
63.3/68.6
74.6/81.6
97.1/107.0
119.8/133.7
60/60
—
—
—
—
—
70/80
80/90
100/110
125/150
22.5/26.0
33.7/39.1
45.1/50.8
67.9/78.1
90.1/104.2
25/30
35/40
50/60
—
—
—
—
—
70/80
100/110
29.5 45/45
—
048–301
208/230-1 187
253
26.4
129.0
2.1
7.2
3.75/5.00
5.60/7.50
7.50/10.0
11.30/15.0
15.0/20.0
18.1/20.8
27.1/31.3
36.1/41.7
54.1/62.0
72.2/83.3
65.2/68.3
75.9/81.4
87.4/94.4
110.2/120.4
131.8/145.9
—
—
—
—
—
70/70
80/90
90/100
125/125
150/150
22.5/26.0
33.7/39.1
45.1/50.8
67.9/78.1
90.1/104.2
25/30
35/40
50/60
—
—
—
—
—
70/80
100/110
42.3 50/50
—
048–311
208/230-1 187
253
20.8
109.0
2.1
7.2
3.75/5.00
5.60/7.50
7.50/10.0
11.30/15.0
15.0/20.0
18.1/20.8
27.1/31.3
36.1/41.7
54.1/62.0
72.2/83.3
58.2/61.3
68.9/74.4
80.4/87.4
103.2/113.4
124.8/138.9
60/-
—
—
—
—
-/70
70/80
90/90
110/125
125/150
22.5/26.0
33.7/39.1
45.1/50.8
67.9/78.1
90.1/104.2
25/30
35/40
50/60
—
—
—
—
—
70/80
100/110
35.3 45/45
—
060
208/230-1 187
253
32.1
169.0
2.1
7.2
3.75/5.00
5.60/7.50
7.50/10.0
11.30/15.0
15.0/20.0
18.1/20.8
27.1/31.3
36.1/41.7
54.1/62.0
72.2/83.3
72.0/75.5
83.3/88.5
94.6/101.5
117.1/126.9
139.6/153.5
—
—
—
—
—
90/100
100/100
100/110
125/150
150/175
22.5/26.0
33.7/39.1
45.1/50.8
67.9/78.1
90.1/104.2
25/30
35/40
50/60
—
—
—
—
—
70/80
100/110
48.7
—
80/80
(See legend following Electrical Data chart)
—16—
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