Carrier WeatherExpert 48N2 Installation Instructions Manual page 27
Packaged rooftop cooling units with gas heat and
comfortlink controls
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TB1
21
11
22
12
13
23
EQUIP GND
LEGEND
EQUIP — Equipment
GND
— Ground
NEC
— National Electrical Code
TB
— Terminal Block
Fig. 21 — Field Power Wiring Connections
FACTORY-INSTALLED
POWER
DISCONNECT
WIRING
HANDLE LOCATION
ENTRY
Fig. 22 — Factory-Installed Disconnect Location
(End of Unit Shown)
NOMINAL
BkW
HP
7.5
5.6
10
7.5
15
11.2
20
14.9
25
18.7
30
22.4
40
29.8
50
37.3
60
44.8
75
59.5
100
74.6
LEGEND
Bhp — Brake Horsepower
BkW — Brake Kilowatts
NOTE: Extensive motor and electrical testing on the Carrier units
has ensured that the full horsepower range of the motor can be uti-
lized with confidence. Using fan motors up to the horsepower ratings
shown in the Motor Limitations table will not result in nuisance trip-
ping or premature motor failure. Unit warranty will not be affected.
DISCONNECT PER NEC
a48-8466
a48-8730
Table 7 — Motor Limits
MAX BHP
MAX BkW
8.6
6.39
11.5
8.56
17.3
12.89
22.9
17.10
28.7
21.41
34.5
25.71
45.9
34.27
57.4
42.83
68.9
51.41
86.1
64.25
114.8
85.67
FACTORY
WIRE
23
22
21
DISCONNECT
PER NEC
13
12
11
FIELD
WIRE
Fig. 23 — Field Power Wiring Connections
for Factory-Installed Disconnect
MAX AMPS (EA)
460 V
12.0
14.3
22.0
28.7
36.3
41.7
55.0
71.0
83.0
101.0
132.0
27
EQUIP
GND
LEGEND
EQUIP — Equipment
GND
— Ground
NEC
— National
Electrical Code
RATED
EFFICIENCY
575 V
10.0
91.7
12.0
91.7
19.0
93.0
23.0
93.6
28.4
93.6
36.3
94.1
43.8
94.1
52.8
94.5
60.5
95.0
80.5
95.0
106.0
95.4
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