800SA/801SA: Installation, Start–Up, Operating and Service and Maintenance Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
18
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.
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
).
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 two screws removed in Step 1.
5. Route J-Box wires within furnace away from sharp edges, rotating
parts and hot surfaces.
A10291
Fig. 26 – Relocating J-Box
Electrical Connection to J-Box
Electrical Box on Furnace Casing Side
1. Refer to
when installing an electrical box.
2. 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.
3. Remove the desired electrical box hole knockout and position the
hole in the electrical box over the hole in the furnace casing.
4. Fasten the electrical box to casing by driving two field supplied
screws from inside electrical box into casing steel.
A190278
Fig. 27 – Field-Supplied Electrical Box on Furnace Casing
5. Remove and save two screws holding J-Box.
6. 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.
7. Route furnace power wires through holes in casing and electrical
box and into electrical box.
8. Pull field power wires into electrical box.
9. Remove cover from furnace J-Box.
10. Route field ground wire through holes in electrical box and casing,
and into furnace J-Box.
11. Reattach furnace J-Box to furnace casing with screws removed in
Step 4.
12. Secure field ground wire to J-Box green ground screw.
13. Complete electrical box wiring and installation. Connect line
voltage leads (see
). Use best practices (NEC in U.S. for
wire bushings, strain relief, etc.)
14. Reinstall cover to J-Box. Do not pinch wires between cover and
bracket.
Power Cord Installation in Furnace J-Box
NOTE:
Power cords must be able to handle the electrical requirements
. Refer to power cord manufacturer’s listings.
1. Remove cover from J-Box.
2. Route listed power cord through 7/8-in. (22 mm) diameter hole in
J-Box.
3. Secure power cord to J-Box bracket with a strain relief bushing or a
connector approved for the type of cord used.
4. Secure field ground wire to green ground screw on J-Box bracket.
5. Connect line voltage leads (see
).
6. Reinstall cover to J-Box. Do not pinch wires between cover and
bracket.
BX Cable Installation in Furnace J-Box
1. Remove cover from J-Box.
2. Route BX cable into 7/8-inch diameter hole in J-Box.
3. Secure BX cable to J-Box bracket with connectors approved for the
type of cable used.
4. Secure field ground wire to green ground screw on J-Box bracket.
5. Connect line voltage leads (see
).
6. Reinstall cover to J-Box. Do not pinch wires between cover and
bracket.
24-V Wiring
Make field 24-v connections at the 24-v terminal strip (see
).
Connect terminal Y for proper cooling operation (see
). Use only
AWG No. 18, color-coded, copper thermostat wire.
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
Alternate
Alternate
Location
Location
GROUND
NEUTRAL
LINE VOLTAGE
