PG80VTLA: 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.
21
A190279
Fig. 25 – Field-Supplied External
Electrical Box on Furnace Casing
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 Table 6 for equipment electrical specifications.
U.S. Installations: Make all electrical connections in accordance with
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 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 Fig. 26).
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.
A10291
Fig. 26 – Relocating J-Box
Table 6 – Electrical Data
FURNACE SIZE
VOLTS -
HERTZ -
PHASE
OPERATING VOLTAGE
RANGE
*
*. Permissible limits of the voltage range at which the unit operates satisfactorily.
MAX. 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.
MAX WIRE
LENGTH
FT (M)
‡
‡. Time-delay type is recommended.
MAX. FUSE
OR CKT. BKR
AMPS
**
**. Length shown is as measured 1 way along wire path between furnace and service panel for maximum 2 percent voltage drop.
MIN. WIRE
GAUGE
Max. Min.
36045A 115-60-1 127 104 7.7 10.4 35 (10.9) 15 14
36070A 115-60-1 127 104 8.0 10.8 34 (10.4) 15 14
48070B 115-60-1 127 104 10.5 13.9 26 (8.1) 15 14
48090B 115-60-1 127 104 8.6 11.3 32 (10) 15 14
60090C 115-60-1 127 104 11.5 15.0 24 (7.5) 15 14
66110C 115-60-1 127 104 13.1 16.9 34 (10.4) 20 12
66135D 115-60-1 127 104 13.9 17.9 32 (9.8) 20 12
CAUTION
!
FURNACE MAY NOT OPERATE HAZARD
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 manifold 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. (See Fig. 25).
COPPER
WIRE ONLY
ELECTRIC
DISCONNECT
SWITCH
ALUMINUM
WIRE
FactoryFactory
InstalledInstalled
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