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58TP0B/58TP1B: Installation, Start-up, Operating and Service and Maintenance Instructions
Fig. 25 – Field-Supplied External
Electrical Box on Furnace Casing
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
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.
26).
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.
Fig. 26 – Relocating J-Box
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Electrical Connection to J-Box
Electrical Box on Furnace Casing Side
FIRE OR ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury, death, or
property damage.
High voltage field connections must be located in J-Box with furnace or
in field supplied external disconnect mounted to furnace.
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.
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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.
Fig.
26).
4. Remove and save two screws holding J-Box.
Fig. 27 – Field-Supplied Electrical Box on Furnace Casing
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,
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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. (See
wire bushings, strain relief, etc.
13. 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
listed in
Table
1. Remove cover from J-Box.
17
WARNING
!
Fig.
27). Use best practices (NEC in U.S. for
6. Refer to power cord manufacturer's listings.
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