Carrier 58TUA - Manual (Page 7)

Table 5—Electrical Data
UNIT SIZE
VOLTS-
HERTZ-
PHASE
OPERATING
VOLTAGE RANGE
MAX
UNIT
AMPS
MIN
WIRE
GAGE
MAX WIRE
LENGTH (FT)*
MAX FUSE OR
HACR-TYPE
CKT BKR AMPS* Max* Min*
040-08 115—60—1 127 104 6.1 14 45 15
040-12 115—60—1 127 104 8.5 14 33 15
060-08 115—60—1 127 104 6.1 14 46 15
060-12 115—60—1 127 104 8.9 14 32 15
080-14 115—60—1 , 127 104 9.2 14 31 15
080-16 115—60—1 127 104 10.6 14 27 15
100-12 115—60—1 127 104 8.2 14 34 15
100-16 115—60—1 127 104 10.3 14 27 15
100-20 115—60—1 127 104 14.6 12 30 20
120-16 115—60—1 127 104 10.3 14 27 15
120-20 115—60—1 127 104 13.5 12 33 20
140-20 115—60—1 127 104 14.2 12 31 20
* Permissible limits of the voltage range at which the unit will operate satisfactorily.
tTime-delay fuse is recommended.tLength shown is as measured 1 way along wire path between unit and service panel for maximum 2 percent voltage drop.
installed immediately upstream of the gas supply connection to the
furnace and downstream of the manual shut-off valve. Place
ground joint union between the gas control manifold and the
manual shut-off valve.
A WARNING
Use the proper length of pipes to avoid stress on the gas
control manifold. A failure to follow this warning can cause
a gas leak resulting in a fire, explosion, personal injury, or
death.
A CAUTION
Use a backup wrench at the furnace gas control when
connecting the gas pipe to the furnace to avoid damaging gas
controls or manifold.
A WARNING
Never purge a line into a combustion chamber. Never use
matches, candles, flame, or other sources of ignition for the
purpose of checking leakage. Use a soap-and-water solution
to check for leakage. A failure to follow this warning can
cause a fire, explosion, personal injury, or death.
Step 6—ELECTRICAL CONNECTIONS
115-V WIRING
Refer to the unit rating plate or Table 5 for equipment electrical
requirements. The control system requires an earth ground for
proper operation.
A CAUTION
Do not connect aluminum wire between disconnect switch
and furnace. Use only copper wire.
Make all electrical connections in accordance with the National
Electrical Code ANSI/NFPA 70-1993 and local codes or ordi­
nances that might apply. For Canadian installations, all electrical
connections must be made in accordance with CSA C22.1 Cana­
dian Electrical Code, or authorities having jurisdiction.
A WARNING
The cabinet MUST have an uninterrupted or unbroken ground
according to National Electrical Code, ANSI/ NFPA 70-1993
and Canadian Electrical 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.
The auxiliary junction box can be moved to the right-hand side of
the furnace when a right-side power supply is desired. Remove the
2 screws holding the auxiliary junction box. Mount the junction
box on the right-hand side of the furnace. The blower door
interlock switch must also be moved to the right side of the furnace
due to the length of the wiring harness. (Holes have been provided
in casing). When moved, tuck the wiring harness behind the clip
provided to keep extra wire lengths out of the way.
NOTE: Proper polarity must be maintained for 115-v wiring. If
polarity is incorrect, the furnace control will flash code 02 on the
status LED and prevent heating operation.
24-V WIRING
Make field 24-v connections at the 24-v terminal strip. (See Fig.
10.) Connect terminal Y as shown in Fig. 8 or 9 for proper cooling
operation. Use only AWG No. 18 or larger, color coded copper
thermostat wire.
The 24-v circuit contains an automotive-type, 3-amp fuse located
on the main control. Any 24-v electrical shorts during installation,
service, or maintenance could cause this fuse to blow. If fuse
replacement is required, use ONLY a 3-amp fuse. The control will
flash code 24 when the fuse needs replacement.
ACCESSORIES
1. Electronic air cleaner (EAC)
A terminal block (EAC-1 and EAC-2) is provided for elec­
tronic air cleaner connection. (See Fig. 10.) The terminals are
energized with 115v, 1-amp maximum during blower motor
operation.
2. Humidifier (HUM)
Screw terminals (HUM and COM) are provided for 24-v
humidifier connection. The terminals are energized with 24v,
0.5-amp maximum when the gas valve is energized.
Step 7— VENTING
For conventional Category I vertical venting, refer to the enclosed
Installations Instructions. GAMA venting table for category I
furnaces, and QUIK'VENT™ table for Category I fan-assisted