Carrier 58CTW Installation, Start-Up, Operating And Service And Maintenance Instructions page 22

VOLTS -
HERTZ -
FURNACE SIZE
PHASE
045--- 12/036045 115-60-1
070--- 16/048070 115-60-1
090--- 16/048090 115-60-1
110--- 22/066110 115-60-1
135--- 22/066135 115-60-1
* Permissible limits of the voltage range at which the unit operates 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.
Time ---delay type is recommended.
{
Length shown is as measured 1 way along wire path between furnace and service panel for maximum 2 percent voltage drop.
}
115- -V Wiring
Verify that the voltage, frequency, and phase correspond to that
specified on unit rating plate. Also, check to be sure that service
provided by utility is sufficient to handle load imposed by this
equipment. Refer to rating plate or Table 6 for equipment
electrical specifications.
U.S. Installations: Make all electrical connections in accordance
with National Electrical Code (NEC) NFPA 70- -2011 and any
local codes or ordinances that might apply.
WARNING
!
FIRE HAZARD
Failure to follow this warning could result in personal
injury, death, or property damage.
Do not connect aluminum wire between disconnect
switch and furnace. Use only copper wire.
Use a separate, fused branch electrical circuit with a properly
sized fuse or circuit breaker for this furnace. See Table 6 for wire
size and fuse specifications. A readily accessible means of
electrical disconnect must be located within sight of the furnace.
NOTE: Proper polarity must be maintained for 115- -v wiring. If
polarity is incorrect, control LED status indicator light will flash
rapidly and furnace will NOT operate.
J- -Box Relocation
NOTE: If factory location of J- -Box is acceptable, go to next
section (ELECTRICAL CONNECTION to J- -Box).
NOTE: On 14- -in. (356 mm) wide casing models, the J- -Box
shall not be relocated to other side of furnace casing when the
vent pipe is routed within the casing.
1. Remove and save two screws holding J- -Box. (See Fig.
23.)
NOTE: The J- -Box cover need not be removed from the J- -Box
in order to move the J- -Box. Do NOT remove green ground
screw inside J- -Box. (See Fig. 23.)
2. Cut wire tie on loop in furnace wires attached to J- -Box.
3. Move J- -Box to desired location.
4. Fasten J- -Box to casing with the two screws removed in
Step 1.
5. Route J- -Box wires within furnace away from sharp edges,
rotating parts and hot surfaces.
Table 6 – Electrical Data
OPERATING VOLTAGE
MAX. UNIT
RANGE *
Max. Min.
127 104
127 104
127 104
127 104
127 104
MAX WIRE
UNIT
LENGTH FT
AMPS AMPACITY
8.0 10.85
9.6 12.85
10.2 13.42
13 16.84
13 16.84
Electrical Connection to J- -Box
Electrical Box on Furnace Casing Side (See Fig. 24.)
WARNING
!
FIRE OR ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury, death, or property damage.
If field- -supplied manual disconnect switch is to be mounted
on furnace casing side, select a location where a drill or
fastener cannot damage electrical or gas components.
Factory Factory
Installed Installed
Fig. 23 - - Relocating J- -Box
1. Select and remove a hole knockout in the casing where the
electrical box is to be installed.
NOTE: Check that duct on side of furnace will not interfere with
installed electrical box.
2. Remove the desired electrical box hole knockout and posi-
tion the hole in the electrical box over the hole in the fur-
nace casing.
3. Fasten the electrical box to casing by driving two field- -
supplied screws from inside electrical box into casing
steel.
4. Remove and save two screws holding J- -Box. (See Fig.
23.)
5. Pull furnace power wires out of 1/2- -in. (12 mm) diameter
hole in J- -Box. Do not loosen wires from strain- -relief
wire- -tie on outside of J- -Box.
6. Route furnace power wires through holes in casing and
electrical box and into electrical box.
7. Pull field power wires into electrical box.
22
MAX. FUSE
MIN. WIRE
OR CKT. BKR
GAUGE
(M)‡ AMPS †
34 15
28 15
27 15
34 20
34 20
Alternate Alternate
Location Location
14
14
14
12
12
A10291