Manual 2100-594
Page 18 of 19
TABLE 5
COOLING PRESSURE TABLE
Air Temperature Entering Outdoor Coil °F
Low side pressure ± 4 PSIG
High side pressure ± 10 PSIG
Tables are based upon rated CFM (airflow) across the evaporator coil. If there is any doubt as to correct operating charge
being in the system, the charge should be removed, system evacuated and recharged to serial plate charge weight.
NOTE:
Pressure table based on high speed condenser fan operation. If condensing pressures appear elevated check
condenser fan wiring. See “Condenser Fan Operation”.
Maximum size of the time delay fuse or HACR type circuit breaker for protection of field wiring conductors.
Based on 75C copper wire. All wiring must conform to the National Electrical Code and all local codes.
These “Minimum Circuit Ampacity” values are to be used for sizing the field power conductors. Refer to the National Electrical code (latest version),
Article 310 for power conductor sizing.
Caution
: When more than one field power circuit is run through one conduit, the conductors must be derated. Pay special attention to note 8 of Table 310
regarding Ampacity Adjustment Factors when more than three (3) current carrying conductors are in a raceway.
* Top outlet supply option is available only factory installed and only on the selected models.
IMPORTANT:
While this electrical data is presented as a guide, it is important to electrically connect properly sized fuses and conductor wires in
accordance with the National Electrical Code and all local codes.
Model
Return Air Temp
(DB/WB)
Pressure
75
80
85
90
95
100
105
110
115
120
W48A2/L2
75/62
Low Side
High Side
117
355
119
378
121
403
123
427
125
454
127
482
129
510
131
539
133
570
135
603
80/67
Low Side
High Side
125
364
127
388
129
413
132
438
134
466
136
494
138
523
140
553
142
585
144
618
85/72
Low Side
High Side
129
377
131
402
134
427
137
453
139
482
141
511
143
541
145
572
147
605
149
640
W60A2/L2
75/62
Low Side
High Side
122
346
124
371
126
396
128
421
130
447
131
473
133
499
135
526
137
553
138
580
80/67
Low Side
High Side
131
355
133
380
135
406
137
432
139
458
140
485
142
512
144
539
146
567
148
595
85/72
Low Side
High Side
136
367
138
393
140
420
142
447
144
474
145
502
147
530
149
558
151
587
153
616
MODEL
Rated
Volts &
Phase
No. Field
Power
Circuits
Single Circuit
Minimum
Circuit
Ampacity
Maximum
External Fuse
or Ckt. Brkr.
Field
Power
Wire Size
Ground
Wire
W48A/L23-A0Z 230/208-1
1
39
50
8
10
W60A/L23-A0Z
-A05
-A10
230/208-3
1
1
1
42
42
60
60
60
60
8
8
6
10
10
10
TABLE 6
Electrical Specifications — W**A and W**L Series
