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830CA: 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.
15
115-V WIRING
Verify that the voltage, frequency, and phase correspond to that specified
on unit rating plate. Also, check to be sure that service provided by
utility is sufficient to handle load imposed by this equipment. Refer to
rating plate or
for equipment electrical specifications.
Make all electrical connections in accordance with current edition of
National Electrical Code (NEC) NFPA 70 and any local codes or
ordinances that might apply.
Use a separate, fused branch electrical circuit with a properly sized fuse
or circuit breaker for this furnace. See
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 rapidly flash RED
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).
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.
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.
Electrical Connection to J-Box
Electrical Box on Furnace Casing Side
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.
4. Remove and save two screws holding J-Box.
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, see
.
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, see
. Use best practices (NEC in U.S. for 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
. 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.
CAUTION
!
FURNACE MAY NOT OPERATE
Failure to follow this caution may result in intermittent furnace
operation.
Furnace control must be grounded for proper operation or else control
will lock out. Control must remain grounded through green/yellow wire
routed to gas valve and gas valve mounting bracket screw.
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.
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.
Table 6 – Electrical Data
Unit Size
Volts-
Hertz- Phase
Operating Voltage
*
Range
*. Permissible limits of the voltage range at which the unit operates satisfactorily.
Maximum
Unit Amps
Unit
Ampacity
†
†. 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.
Minimum
Wire Size
AWG
Maximum
Wire Length
‡
ft
‡. Length shown is as measured one way along wire path between unit and service panel for maximum 2 percent voltage drop.
Maximum
Fuse or CKT
BKR
**
Amps
**. Time-delay type is recommended
Maximum
Minimum
036040
115-60-1
127
104
11.4
12.6
14
29
15
048060
115-60-1
127
104
11.4
12.6
14
29
15
060080
115-60-1
127
104
17.8
18.9
12
30
20
060100
115-60-1
127
104
17.8
18.9
12
30
20