Specifications

The J-Box cover, mounting bracket and screws are shipped in
the loose parts bag included with the furnace. The J-Box can
Figure 34 ITypical 2-Stage Field Wiring Diagram
NOTE2
be mounted on the left or right side of the casing, as viewed
from the upflow position. (See Figure 35)
.... FIELD 24-VOLT WIRING
.... FIELD 115-, 208/230-, 460-VOLT WIRING
-- FACTORY 24-VOLT WIRING
FACTORY 115-VOLT WIRING
,1-STAGE
FIVE THERMOSTAT FIELD-SUPPLIED
WIRE--S. I(_)_ _(_ _ ,(_),(_)TERM,NALS FUSEDD,SOONNECT
I I I I I ....
BLOWER THREE-WIRE_ _ i I P---4, _ :_
DOOR .....
HEATING- /
208/230- OR
SWITCH_HEoNLY _ _ ..... 460-VOLT
THREE
= _ _ _ , , PHASE
==Tw _v_== _ I" _'-' _ -- i i i
wHTI_.........IWHTj_! 0 @ I ..... t.... t--_--', _ ........................................................................................
: N I I I I i
__Z-Z-_-Z_____ I 0 : ..... , , , |___.__4._.J___.208/230-
d i
BOX L ............ ' I
_-,_ I CONDENSING
DISCONNECT
k2/-
UNIT
24-VOLT
TERMINAL NOTES:1. ConnectY/Y2-terminalasshownforproperoperation.
BLOCK 2. Somethermostatsrequirea "C"terminalconnectionasshown.
FURNACE 3. If anyofthe originalwire,as supplied,mustbereplaced,use
same typeor equivalent wire.
Figure 35 IJ-Box Location
J BOX LOCATIONS
Representative drawing only, some models may vary in appearance.
Remove the J-Box cover and mounting bracket from the loose
parts bag. Select a 7/8-in. (22 mm) knock-out on the desired
side of the casing. Remove the knock-out from the casing. Drill
two 1/8-in. (3 mm) pilot holes in the casing dimples by the
desired 7/8-in. (22 mm) knock-out.
Align the J-Box mounting bracket against the inside of the
casing and secure the mounting bracket with the screws. (See
Figure 36)
Electrical Box on Furnace Casing Side
NOTE: Check that duct on side of furnace will not interfere with
installed electrical box.
1. Fasten a field-supplied external electrical box to the
outside of the casing by driving two field-supplied
screws from inside electrical box into casing. (See
Figure 37)
2. Route field power wiring into external electrical box.
3. Pull furnace power wires through 1/2-in. (12 mm)
diameter hole in J-Box. If necessary, loosen power
wires from strain-relief wire-tie on furnace wiring
harness.
Al1401
4. Connect any code required external disconnect(s) to
field power wiring.
Figure 36 _J-Box Bracket Installation
@
J-BOX
MOUNTING
SCREWS _,
J-BOX
MOUNTING
BRACKET
GROUND
SCREW
J-BOXCOVER
All FO03
5. Route external field power wires through holes in
electrical box and casing.
6. Connect field ground wire and factory ground wire to
green ground screw on J-Box mounting bracket as
shown in Figure 36.
7. Connect field power and neutral leads to furnace power
leads, as shown in Figure 34.
28 Specifioati ..... bject to change without notice. 440 01 4201 01