Carrier 58MSA Installation, Start-Up, And Operating Instructions Manual page 23

VOLTS—
UNIT
HERTZ—
SIZE
PHASE
040-08 115—60—1
040-12 115—60—1
060-08 115—60—1
060-12 115—60—1
060-16 115—60—1
080-12 115—60—1
080-16 115—60—1
080-20 115—60—1
100-16 115—60—1
100-20 115—60—1
120-20 115—60—1
* Permissible limits of voltage range at which unit will operate satisfactorily.
† Unit ampacity = 125 percent of largest operating component's full load amps plus 100 percent of all other potential operating components' (EAC, humidifier, etc.) full
load amps.
‡ Length shown is as measured 1 way along wire path between unit and service panel for maximum 2 percent voltage drop.
** Time-delay type is recommended.
rating plate. Also, check to be sure that service provided by power
supply is sufficient to handle load imposed by this equipment.
Refer to rating plate or Table 6 for equipment electrical specifi-
cations.
Make all electrical connections in accordance with National
Electrical Code (NEC) ANSI/NFPA 70-2002 and any local codes
or ordinances that might apply. For Canadian installations, all
electrical connections must be made in accordance with Canadian
Electrical Code CSA C22.1 or authorities having jurisdiction.
Use a separate, fused branch electrical circuit containing a properly
sized fuse or circuit breaker for this furnace. See Table 6 for wire
size and fuse specifications. A disconnecting means must be
located within sight from and readily accessible to furnace.
NOTE: Proper polarity must be maintained for 115-v wiring. If
polarity is incorrect, control center fault code indicator light will
flash rapidly and furnace will NOT operate.
→
FIRE HAZARD
Failure to follow this warning could result in serious injury,
death, or property damage.
Do not connect aluminum wire between disconnect switch
and furnace. Use only copper wire. (See Fig. 29.)
Table 6—Electrical Data
OPERATING
MAX
VOLTAGE RANGE
UNIT
AMPS
Max* Min*
127 104 6.1
127 104 7.3
127 104 6.1
127 104 7.1
127 104 9.5
127 104 7.6
127 104 10.0
127 104 14.1
127 104 10.2
127 104 14.8
127 104 14.6
MIN
UNIT
WIRE
AMPACITY†
SIZE
8.4 14
10.0 14
8.4 14
9.8 14
12.8 14
10.4 14
13.4 14
18.4 12
13.5 14
19.3 12
19.1 12
ELECTRIC
DISCONNECT
SWITCH
Fig. 29—Disconnect Switch and Furnace
ELECTRICAL SHOCK AND FIRE HAZARD
Failure to follow this warning could result in serious injury,
death, or property damage.
The cabinet MUST have an uninterrupted or unbroken ground
according to NEC ANSI/NFPA 70-2002 and Canadian Elec-
trical Code CSA C22.1 or local codes to minimize personal
injury if an electrical fault should occur. This may consist of
electrical wire or conduit approved for electrical ground when
installed in accordance with existing electrical codes. Do not
use gas piping as an electrical ground.
J-Box Relocation
1. Remove 2 screws holding auxiliary J-box. (See Fig. 31.)
2. Rotate J-box 180° and attach box to left side, using holes
provided.
23
MAX WIRE MAX FUSE OR
LENGTH (FT)‡ CKT BKR AMPS**
44 15
37 15
44 15
38 15
29 15
36 15
28 15
31 20
27 15
30 20
30 20
COPPER
WIRE ONLY
ALUMINUM
WIRE
A93033