20
441 01 2121 01
Table 7 – Electrical Data
FURNACE SIZE
VOLTS−
HERTZ−
PHASE
OPERATING
VOLTAGE RANGE
MAX. UNIT
AMPS
UNIT
AMPACITY
#
MAX. WIRE
LENGTH − FT (M)}
MAX. FUSE OR
CKT BKR AMPS {
MIN. WIRE
GAUGE
Max. Min.
0701412 115−60−1 127 104 9.0 11.99 30 (9.0) 15 14
0901716 115−60−1 127 104 9.6 12.56 29 (8.8) 15 14
1102120 115−60−1 127 104 15.1 19.33 29 (8.8) 20 12
1352422 115−60−1 127 104 14.9 19.13 30 (9.0) 20 12
* 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.
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.
!
WARNING
Use a separate, fused branch electrical circuit with a properly
sized fuse or circuit breaker for this furnace. See Table 7 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
Figure 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 Figure 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.
Electrical Connection to J−Box
Electrical Box on Furnace Casing Side (See Figure 24)
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
position the hole in the electrical box over the hole in
the furnace casing.
3. Fasten the electrical box to casing by driving two field−
supplied screws from inside electrical box into casing
steel.
Figure 23 − Relocating J−Box
FACTORY
INSTALLED
LOCATION
ALTERNATE
FIELD
LOCATION
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.
!
WARNING
4. Remove and save two screws holding J−Box. (See
Figure 23)
5. Pull furnace power wires out of 1/2−in. (12 mm) diamet-
er 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.
8. Remove cover from furnace J−Box.
9. Route field ground wire through holes in electrical box
and casing, and into furnace J−Box.
10. Reattach furnace J−Box to furnace casing with screws
removed in Step 4.
11. Secure field ground wire to J−Box green ground screw.
12. Complete electrical box wiring and installation. Connect
line voltage leads as shown in Figure 24. Use best
practices (NEC in U.S. for wire bushings, strain relief,
etc.
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