International comfort products F8MVL Installation Instructions Manual page 19

VOLTS−
HERTZ−
PHASE
FURNACE SIZE
0451412B 115-60-1
0701716B 115-60-1
0902116B 115-60-1
1102122B 115-60-1
1352422B 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.
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
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)
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.
441 01 2122 01
Table 6 – Electrical Data
OPERATING
VOLTAGE RANGE
MAX. UNIT
Max. Min. AMPS
127 104 8.0
127 104 11.3
127 104 10.2
127 104 13.0
127 104 13.0
Specifications are subject to change without notice.
UNIT
AMPACITY MAX. WIRE LENGTH
#
− FT (M)}
10.8 34.0 (10.4)
15.0 24.0 (7.3)
13.4 27.0 (8.2)
16.8 34.0 (10.4)
16.8 34.0 (10.4)
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−sup-
plied screws from inside electrical box into casing steel.
Figure 23 − Relocating J−Box
FACTORY
INSTALLED
LOCATION
4. Remove and save two screws holding J−Box. (See
Figure 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.
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 re-
moved in Step 4.
11. Secure field ground wire to J−Box green ground screw.
MAX. FUSE OR
MAX. WIRE
CKT BKR AMPS {
SIZE AWG
15.0 14
15.0 14
15.0 14
20.0 12
20.0 12
ALTERNATE
FIELD
LOCATION
19